GJESM Publisher (Professor J. Nouri)Global Journal of Environmental Science and Management2383-35728120220101Editorial1324620610.22034/GJESM.2022.01.00ENJ. NouriGlobal Journal of Environmental Science and Management, Tehran, Iran0000-0002-9982-3546Journal Article20210901Global Journal of Environmental Science and Management (GJESM) is an open access quarterly Publication. The title<em> </em>welcomes original, review, novel and high-impact contributions from the related Environmental science, engineering and management issues. The GJESM Journal has been indexed in the well-known world databases mainly; Scopus (CiteScore = 3.9), Scimago Journal Rank (Q2), Web of Science (ESCI), JCI = 0.39. The title is also a member of the Committee on Publication Ethics (COPE). All submitted manuscripts are checked for similarity through a trustworthy software named <em>iThenticate</em> to be assured about its originality and then rigorously peer-reviewed by the international reviewers. https://www.gjesm.net/article_246206_6ae33c1de3f5b522f2318950e16ebb0e.pdfGJESM Publisher (Professor J. Nouri)Global Journal of Environmental Science and Management2383-35728120220101Economic policy of Eastern European countries in the field of energy in the context of global challenges11624446210.22034/GJESM.2022.01.01ENS. BogachovFinancial University under the Government of the Russian Federation, Moscow, Russian Federation0000-0002-8938-0315A. KirizleyevaInstitute for Local and Regional Development, Ukraine0000-0003-3285-3895O. MandroshchenkoFinancial University under the Government of the Russian Federation, Moscow, Russian Federation0000-0002-1385-5417S. ShahoianNational Technical University, Dnepro Polytechnic, UkraineY. VlasenkoKyiv National Economic University named after Vadym Hetman, UkraineJournal Article20210226<strong>BACKGROUND AND OBJECTIVES:</strong> The crisis in the energy sector of Eastern European countries determines the search for alternative ways to solve the above problem, one of which is the development of economic policy in the field of energy in the context of European integration. The purpose of the article is to develop conceptual, theoretical-methodological and methodical-practical foundations of economic policy in the field of energy.<br /><strong>METHODS:</strong> The methodological basis of the paper is a set of techniques, principles, general theoretical, special, interdisciplinary methods of scientific study. The method of metric ranking is used in assessing the levels of energy security in countries with high energy use. Based on the method of system equations, a functional system of critical infrastructure of the country is built.<br /><strong>FINDING:</strong> A model of compatibility of energy infrastructure with other components of critical infrastructure (institutional and technological) was developed in order to ensure uninterrupted interaction between all key elements of critical infrastructure of the country and increase the level of energy, economic and national security of the country. Based on the content analysis of the legislation of the countries, it has been proven that in the system of critical infrastructure the energy sector is a key factor of national security. The calculated indicators of the level of energy efficiency of the energy system of Ukraine until 2035 based on the use of blockchain technology proved that the level of energy intensity of Gross domestic product should be reduced by more than half (53.57 %).<br /><strong>CONCLUSION:</strong> As a conclusion, the developed model of the system of management of distribution of energy resources in the country using blockchain technology will contribute to decentralization of energy transactions, generation and supply of energy based on renewable and traditional sources, will allow to solve the problem of significant distance between renewable energy sources and industrial centers (its main consumers). https://www.gjesm.net/article_244462_40d0f105a29af581b3047f35a5ff5d85.pdfGJESM Publisher (Professor J. Nouri)Global Journal of Environmental Science and Management2383-35728120220101Distribution of energy in propagation for ocean extreme wave generation in hydrodynamics laboratory172624465510.22034/GJESM.2022.01.02END. FadhilianiGraduate School of Mathematics and Applied Sciences, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia0000-0001-5775-4346M. IkhwanGraduate School of Mathematics and Applied Sciences, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia0000-0002-8162-1479M. RamliDepartment of Mathematics, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia0000-0003-1225-9063S. RizalDepartment of Marine Sciences, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia0000-0003-3637-2351M. SyafwanDepartment of Mathematics, Universitas Andalas, Padang 25163, IndonesiaJournal Article20210318<strong>BACKGROUND AND OBJECTIVES:</strong> The hydrodynamic uncertainty of the ocean is the reason for testing marine structures as an initial consideration. This uncertainty has an impact on the natural structure of the topography as well as marine habitats. In the hydrodynamics laboratory, ships and offshore structures are tested using mathematical models as input to the wave marker. For large wavenumbers, Benjamin Bona Mahony's equation has a stable direction and position in the wave tank. During their propagation, the generated waves exhibit modulation instability and phase singularity phenomena. These two factors refer to Benjamin Bona Mahony as a promising candidate for generating extreme waves in the laboratory. The aim of this research is to investigate the distribution of energy in each modulation frequency change. The Hamiltonian formula that describes the phenomenon of phase singularity is used to observe energy. This data is critical in determining the parameters used to generate extreme waves.<br /><strong>METHODS:</strong> The envelope of the Benjamin Bona Mahony wave group can be used to study the Benjamin Bona Mahony wave. The Benjamin Bona Mahony wave group is known to evolve according to the Nonlinear Schrodinger equation. The Hamiltonian governs the dynamics of the phase amplitude and proves the Nonlinear Schrodinger equation's singularity for finite time. The Hamiltonian is derived from the appropriate Lagrangian for Nonlinear Schrodinger and then transformed into the Hamiltonian with the displaced phase-amplitude variable.<br /><strong>FINDINGS:</strong> Potential energy is related to wave amplitude and kinetic energy is related to wave steepness in the study of surface water waves. When , the maximum wave amplitude and steepness are obtained. When , extreme waves cannot be formed due to steepness. This is due to the possibility of breaking waves into smaller waves on the shore. In terms of position, the energy curve is symmetrical.<br /><strong>CONCLUSION: </strong>According to Hamiltonian's description of the energy distribution, the smaller the modulation frequency, the greater the potential and kinetic energy involved in wave propagation, and vice versa. While the wave's amplitude and steepness will be greatest for a low modulation frequency, and vice versa. The modulation frequency considered as an extreme wave generator is , because the resulting amplitude is quite high and the energy in the envelope is also quite large.https://www.gjesm.net/article_244655_55e9135ea67570c6499061eaec6ef862.pdfGJESM Publisher (Professor J. Nouri)Global Journal of Environmental Science and Management2383-35728120220101Forecasting particulate matter concentration using nonlinear autoregression with exogenous input model274424540310.22034/GJESM.2022.01.03ENM.I. RumalingFaculty of Science and Natural Resources, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, MalaysiaF.P. CheeFaculty of Science and Natural Resources, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia0000-0002-9782-5572H.W.J. ChangPreparatory Centre for Science and Technology, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, MalaysiaC.M. PayusFaculty of Science and Natural Resources, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, MalaysiaS.K. KongDepartment of Atmospheric Sciences, National Central University, Taoyuan, 32001, TaiwanJ. DayouEnergy, Vibration and Sound Research Group, Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia0000-0002-3753-1759J. SentianFaculty of Science and Natural Resources, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, MalaysiaJournal Article20210415<strong>BACKGROUND AND OBJECTIVES:</strong> Air quality in some developing countries is dominated by particulate matter, especially those with size 10 micrometers and smaller or PM<sub>10</sub>. They can be inhaled and sometimes can get deep into lungs; some may even get into bloodstream and cause serious health problems. Therefore, future PM<sub>10</sub> concentration forecasting is important for early prevention and in urban development planning, which is crucial for developing cities. This paper presents the development of PM<sub>10</sub> forecasting model using nonlinear autoregressive with exogenous input model.<br /><strong>METHODS:</strong> To improve performance of nonlinear autoregressive with exogenous input model, principal component analysis is used prior to the model for variable selection. The first stage of principal component analysis involves Scree plot, which determines the number of principal components based on explained variance. This is then followed by selecting variables using a rotated component matrix, based on their strength of contribution towards variation of PM<sub>10</sub> concentration. To test the model, PM<sub>10</sub> data in Kota Kinabalu from 2003 – 2010 was used. Neural network models are developed using this data by varying number of input variables with the inclusion of temporal variables. The developed forecasting models are evaluated using data PM<sub>10</sub> in the city from 2011 to 2012. Four performance indicators, namely root mean square error, mean absolute error, index of agreement and fractional bias are reported.<br /><strong>FINDINGS:</strong> Results from principal component analysis show that five variables including wind direction index, relative humidity, ambient temperature, concentration of nitrogen dioxide and concentration of ozone strongly contribute to the variation of PM<sub>10</sub> concentration. By using these variables together with temporal variables as input in the nonlinear autoregressive with exogenous input models, the resultant model shows good forecasting performance, with root mean square error of 7.086±0.873 µg/m<sup>3</sup>. The selection of significant variables helps in reducing input variables inside the forecast model without degrading its forecast performance.<br /><strong>CONCLUSION: </strong>This model shows very promising performance in forecasting PM<sub>10</sub> concentration in Kota Kinabalu as it requires fewer input variables and does not require variable transformation.https://www.gjesm.net/article_245403_e38df66b46596cf0433a301a6f48682c.pdfGJESM Publisher (Professor J. Nouri)Global Journal of Environmental Science and Management2383-35728120220101Energy-innovation knowledge common connection point management in preventing outbreak of the Covid-19 pandemic in a University455824467510.22034/GJESM.2022.01.04ENV. G.ShcherbakKyiv National University of Technologies and Design, Kyiv, Ukraine0000-0002-7918-6033I. M.GryshchenkoKyiv National University of Technologies and Design, Kyiv, Ukraine0000-0001-7572-4757L. M.Ganushchak-YefimenkoKyiv National University of Technologies and Design, Kyiv, Ukraine0000-0002-4458-2984O. M.NifatovaKyiv National University of Technologies and Design, Kyiv, Ukraine0000-0001-9325-6176V. BobrovnykKyiv National University of Technologies and Design, Kyiv, Ukraine0000-0003-1779-5375M. VerhunKyiv National University of Technologies and Design, Kyiv, Ukraine0000-0002-2787-5187Journal Article20210307<strong>BACKGROUND AND OBJECTIVES: </strong>The new wave of the Covid-19 pandemic has complicated the working conditions of higher education institutions in Ukraine. In this regard, saving energy resources of the university offers an opportunity to get out of the crisis. The purpose of the study is to develop a management system for energy complexes with non-conventional renewable energy sources in the context of preventing a new outbreak of Covid-19 pandemic.<br /><strong>METHODS:</strong> The method of Deutsche Gesellschaft für Nachhaltiges Bauen was used to conduct energy audits, construct energy profiles of university offices. The cluster analysis was used to perform energy certification of university offices according to the indicators of integral energy efficiency potential and the level of annual specific energy consumption. Fuzzy methods made it possible to classify all the buildings into 3 categories (A, B, C) to prioritize their use in the light of Covid-19 pandemic. The system for monitoring the attained level of energy efficiency is based on the use of discriminant analysis.<br /><strong>FINDINGS: </strong>Implementation of the weighted strategy has proved that the classes will be given online, 23% of all offices. Category A (administrative, technical, service buildings; laboratories with unique equipment with 24-hour service) will be used in a pessimistic scenario (continuation of Covid-19 pandemic). In the optimistic scenario (end of Covid-19 pandemic), by means of the suggested energy efficiency monitoring system, the probability of using category A offices makes 100%, B offices- 50% and C offices - 13%.<br />CONCLUSION: Implementation of the developed energy efficiency action plan will offer the opportunity for the University to use reasonably the common connection point of knowledge management of energy complexes with non-conventional renewable energy sources in the context of preventing a new outbreak of the Covid-19 pandemic. The profitability of implementing a weighted energy efficiency strategy is 15%, with a payback period of 6.7 years for the purchase and installation of non-conventional renewable energy equipment. In the future, it would be advisable to convert gradually all of the remaining 14 university buildings to the autonomous use of non-conventional renewable energy sources, using a common connection point for the knowledge management of the energy complexes.https://www.gjesm.net/article_244675_366f2e910344071bb4d5f3b392f78a51.pdfGJESM Publisher (Professor J. Nouri)Global Journal of Environmental Science and Management2383-35728120220101Dissolved organic matter and its correlation with phytoplankton abundance for monitoring surface water quality597424559310.22034/GJESM.2022.01.05ENO. H.CahyonugrohoMathematics and Natural Sciences Doctoral Program, Universitas Airlangga, Kampus C Mulyorejo, Surabaya, IndonesiaDepartment of Environmental Engineering, Universitas Pembangunan Nasional Veteran Jawa Timur, Raya Rungkut Madya, Surabaya, Indonesia0000-0001-9721-5515S. HariyantoDepartment of Biology, Universitas Airlangga, Kampus C Mulyorejo, Surabaya, Indonesia0000-0002-0712-9259G. SupriyantoDepartment of Chemistry, Universitas Airlangga, Kampus C Mulyorejo, Surabaya, Indonesia0000-0002-8881-4871Journal Article20210404<strong>BACKGROUND AND OBJECTIVES:</strong> Dissolved organic matter has a fundamental role in supporting phytoplankton abundance and growth in aquatic environments. However, these organisms produce dissolved organic matter with varied quantities or characteristics depending on the nutrient availability and the species composition. Therefore, this study aims to assess the characteristic of dissolved organic matter on surface water and its correlation with phytoplankton abundance for monitoring water quality.<br /><strong>METHODS: </strong>The sample was obtained at four Kali Surabaya River stations for further dissolved organic matter analysis and phytoplankton species analysis. The analysis was presented through bulk parameters of total organic, ultraviolet at 254 nm wavelength (UV254), specific ultraviolet absorbance value, and fluorescence spectroscopy using excitation-emission matrices with fluorescence regional integration analysis.<br /><strong>FINDINGS: </strong>The results showed the bulk parameters of dissolved organic matter at all stations were significantly different, as Station 1 and 2 were higher, while 3 and 4 had a lower concentration. Furthermore, the fluorescence spectroscopy identified four components of dissolved organic matter at all stations, namely aromatic proteins-like (AP-like), humic acid-like (HA-like), soluble microbial by-products-like (SMPs-like), and fulvic acid-like (FA-like). Also, stations 1 and 2 were grouped in the high percentage FRI of humic substance (FA-like and HA-like), while 3 and 4 were classified in the high percentage FRI of non-humic substances (AP-like and SMPs-like).<br /><strong>CONCLUSION: </strong>The main phytoplankton species, namely Plectonema sp., Pinularia sp., Nitzchia sp., Navicula sp., had the highest abundance at Stations 1, 3, and 4, respectively. A strong correlation between dissolved organic matter analysis and phytoplankton abundance led to the usage of these methods for monitoring surface water quality.https://www.gjesm.net/article_245593_3193186d48e90fd86448acbe82361b99.pdfGJESM Publisher (Professor J. Nouri)Global Journal of Environmental Science and Management2383-35728120220101Implications of irrigation water quality in tropical farms758624464210.22034/GJESM.2022.01.06ENB. Guerra TamaraDepartamento de Civil y Ambiental. Universidad de la Costa, Barranquilla Atlántico, ColombiaA. C.Torregroza-EspinosaDepartamento de Productividad e Innovación. Universidad de la Costa, Barranquilla Atlántico, Colombia0000-0001-8077-8880D. Pinto OsorioDepartamento de Civil y Ambiental. Universidad de la Costa, Barranquilla Atlántico, Colombia0000-0002-1496-5722M. Moreno PallaresDepartamento de Civil y Ambiental. Universidad de la Costa, Barranquilla Atlántico, Colombia0000-0002-4136-0104A. Corrales PaterninaDepartamento de Productividad e Innovación. Universidad de la Costa, Barranquilla Atlántico, Colombia0000-0003-1046-467A. Echeverría GonzálezDepartamento de Civil y Ambiental. Universidad de la Costa, Barranquilla Atlántico, Colombia0000-0002-0256-1130Journal Article20210308<strong>BACKGROUND AND OBJECTIVES:</strong> Irrigation system water quality is a complex issue that involves the combined effects of various surface water management parameters. Monitoring of irrigation water quality is essential for the sustainability of crop production and productivity. The department of Sucre, in northern Colombia, is predominantly a ranching and agricultural region where agriculture is the main source for livelihoods. The purpose of this study was to assess the physicochemical quality of surface water in irrigation systems at 141 farms.<br /><strong>METHODS:</strong> To this end, 141 water samples were taken to determine 22 physicochemical parameters. All in-situ measurements and laboratory analysis were performed using standard methods. The results obtained were compared with the international standards proposed by the United Nations’ Food and Agriculture Organization and the World Health Organization. Salinity and sodicity were measured using the irrigation water classification diagram, and the level of correlation between the 22 variables was assessed by means of correlation analysis.<br /><strong>FINDINGS:</strong> The results obtained indicate that based on the measured parameters, the water is classified as appropriate for use in irrigation systems. The maximum and minimum pH values were 9.32 and 4.40, respectively; the maximum and minimum values of electrical conductivity were 669 and 19.80 µS/cm respectively; the maximum and minimum values of total dissolved solids were 478 and 11.80 mg/L respectively, and the maximum and minimum values of the sodium adsorption ratio were 1.72 and 0.01 mEq/L, respectively. <br /><strong>CONCLUSION: </strong>Cation and anion concentrations were within the limits allowed by the Food and Agriculture Organization and the WHO. According to the irrigation water classification diagram, the waters were classified as C1S1 and C2S1, which implies that there are no restrictions for their use in irrigation systems, water type (I) and type (II).https://www.gjesm.net/article_244642_872d3ce0fb49f366a939be2ca9ebf8a2.pdfGJESM Publisher (Professor J. Nouri)Global Journal of Environmental Science and Management2383-35728120220101Environmental awareness factor of used cell phones8710024487910.22034/gjesm.2022.01.07ENN. WibowoDepartment of Industrial Engineering, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia0000-0002-2108-7761R. NurcahyoDepartment of Industrial Engineering, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia0000-0002-2553-9171D.S. GabrielDepartment of Industrial Engineering, Faculty of Engineering, Universitas Indonesia, Depok, IndonesiaJournal Article20210323<strong>BACKGROUND AND OBJECTIVES:</strong> Electronic equipment production is one of the major industrial sectors in Indonesia, as it also contributes to Indonesia’s export commodities, which increase because of rapid technological developments. Cell phones, which have considerable potential to become electronic waste, recorded the enormous escalation in electronic production. This research aimed to increase community involvement and the collection of used cell phones from households in e-waste management in Indonesia. A survey was conducted to explore a household’s environmental awareness and willingness to recycle based on sociodemographics, environmental hazard awareness, and used cell phone usage in Jabodetabek, Indonesia.<br /><strong>METHODS:</strong> In this research, a peer questionnaire was used and organized into five sections: The first section contained the sociodemographic details of the respondents. The second section comprised multiple concerns that relate to recycling and environmental awareness. The third section contained the family cell phone information. The fourth section determined the cell phone consumer behavior. The fifth section consisted of willingness to recycle. Statistical correlations between variables were assessed, and the chi-square independence test was used to evaluate the statistical correlations. <br /><strong>FINDINGS:</strong> Mostly the households will replace their used cell phone if there is damage (66.84%) and keep the used cell phone at home (59.5%), thus becoming an obstacle in applying the appropriate recycling system and a circular economy. The average cell phone ownership in Jabodetabek is 1.28 units, and the average cell phone life span of people in Jabodetabek is 2.6 years. The Environmental Hazard Awareness variable has significant differences with occupation and income level (p-value = 0.028 and 0.046), Used Cellphone Usage variable has significant differences with the income level variable (p-value = 0.024). The others, a statistically significant difference between sociodemographic variable and Willingness to Recycle was observed; p-value = 0.003 for age and p-value = 0.034 for occupation. <br /><strong>CONCLUSION: </strong>This paper showed that Environmental Hazard Awareness and Willingness to Recycle have an important role in increasing the collection of used cell phones from households. . This study assessed community-based factors located in urban areas. The factors could encourage their participation in collection activities, obtain information on the preferred collection channels of residents, and provide a perspective for managing cell phones through an analysis of the improvements and influences of Indonesia’s current e-waste recycling program. Therefore, to develop a new strategy, the findings of this study can provide insights into the e-waste problem and citizen’s awareness of e-waste management.https://www.gjesm.net/article_244879_9649fb50e02c0df10fc859462bee9a60.pdfGJESM Publisher (Professor J. Nouri)Global Journal of Environmental Science and Management2383-35728120220101Effectiveness of natural coagulants in water and wastewater treatment10111624472610.22034/GJESM.2022.01.08ENS. NimeshaUniversity of Sri Jayewardenepura, Gangodawila, Nugegoda, Sri LankaC. HewawasamUniversity of Sri Jayewardenepura, Gangodawila, Nugegoda, Sri Lanka0000-0001-7367-2834D. J.JayasankaUniversity of Sri Jayewardenepura, Gangodawila, Nugegoda, Sri LankaY. MurakamiNagaoka National Institute of Technology, Nishikatakai, Nagaoka, Niigata, JapanN. ArakiIchinoseki National Institute of Technology, Takanashi, Hagisho, Ichinoseki, Iwate, JapanN. MaharjanNagaoka National Institute of Technology, Nishikatakai, Nagaoka, Niigata, JapanJournal Article20210321Natural waterways are contaminated due to industrialization, urbanization, population growth etc., degrading their quality. Contaminated waterways cause numerous health and environmental hazards. Therefore, it is imperative to remove contaminants. Coagulation is one of the efficient primary chemical treatment methods that could be used to treat such contaminants. Natural coagulants have gained popularity in the water and wastewater treatment industry due to their advantage over chemical coagulants. Natural coagulants are derived from either plants, animals, or microorganisms. This study has elaborated on the nature and mechanisms, and types of natural coagulants. In this review work, many studies have proposed several types of natural coagulants. However, plant-based natural coagulants extracted from different plant components have been extensively discussed and compared based on their application and efficiency in water and waste treatment. The primary purpose of this review is to refine the knowledge on the potential use and optimization of the effectiveness of eco-friendly and sustainable natural coagulants. Besides, the development efforts and the barriers reported by recent findings for the commercialization of natural coagulants are also discussed. Further, few modified natural coagulants have also been presented for exploring the other possible approaches to promote their usage in water and wastewater treatment in the future studies.https://www.gjesm.net/article_244726_4608802c48d935239e7d221a8f6b9376.pdfGJESM Publisher (Professor J. Nouri)Global Journal of Environmental Science and Management2383-35728120220101Green tourism business as marketing perspective in environmental management11713224558310.22034/gjesm.2022.01.09ENO. GryshchenkoResearch Sector, Sumy State Pedagogical University, Sumy National Agrarian University,
Sumy, Ukraine0000-0002-4979-9533V. BabenkoInternational e-Сommerce and Hotel and Restaurant Business Department, V.N. Karazin Kharkiv National University, Kharkiv, Ukraine0000-0002-4816-4579O. BilovodskaDepartment of Marketing and Communication Design, Kyiv National University of Technologies and Design, Kyiv, Ukraine0000-0003-3707-0734T. VoronkovaDepartment of Economics and Services, Kyiv National University of Technologies and Design, Kyiv, Ukraine0000-0003-1600-1481I. PonomarenkoDepartment of Marketing and Communication Design, Kyiv National University of Technologies and Design, Kyiv, Ukraine0000-0003-3532-8332Z. ShatskayaDepartment of Economics and Services, Kyiv National University of Technologies and Design, Kyiv, Ukraine0000-0003-1600-1481Journal Article20210421<strong>BACKGROUND AND OBJECTIVES:</strong> Environmental guidelines and principles of sustainable development are becoming increasingly popular and are a priority for most business areas. One of the widely developing eco-destinations is green tourism, which is gaining a profitable and priority status, especially for lower middle-income countries. The purpose of the article is to determine the strategic marketing support for the development of green tourism on the example of Ukraine and its regions based on an approach to its assessment in terms of environmental and tourism competitiveness.<br /><strong>METHODS: </strong>The authors used general scientific and specific methods: comparative, critical and system analysis, synthesis to search and group indicators of ecological and tourism competitiveness. Distance method, ranking, economic and statistical analysis were implemented to analyze the green tourism potential in each region in Ukraine and reveal the leaders and outsiders among them. For the accumulation, processing, visualization of data and forming the matrix of green tourism, based on data for 2015-2019, potential Microsoft Excel, Figma and Canva tools, Harrington scale were applied.<br /><strong>FINDINGS: </strong>The approach to estimate the green tourism potential based on the ecological and tourism regional competitiveness according to the author’s list of 37 indicators were proposed, the matrixes of green tourism potential of Ukrainian regions in 2019 and 2020 were developed, and strategic marketing support according to sustainable development for green tourism business were proposed. Strategic marketing support of green tourism development in Ukrainian regions was defined based on ecological and marketing strategies.<br /><strong>CONCLUSION: </strong>The author's approach makes it possible to systematically assess the potential of green tourism using up-to-date statistical information. According to the tourism and environmental competitiveness rating, the regions with the most significant and worst potential were found. The positive dynamics of the development of green tourism in 2019-2020 were revealed. The results are the basis for providing comprehensive environmental and marketing support to ensure sustainable development and gain additional competitive advantages in the green tourism business.https://www.gjesm.net/article_245583_9c7182676f7866f4510558179081e312.pdfGJESM Publisher (Professor J. Nouri)Global Journal of Environmental Science and Management2383-35728120220101Converting the cigarette butts into valuable products using the pyrolysis process13315024434310.22034/gjesm.2022.01.10ENM. HazbehieanDepartment of Chemical Engineering, Islamic Azad University, Shahreza Branch, Shahreza, IranN. MokhtarianDepartment of Chemical Engineering, Islamic Azad University, Shahreza Branch, Shahreza, IranA. HallajisaniBiofuel Research Labotary, Caspian Faculty of Engineering, College of Engineering, University of Tehran, Rezvanshar, Guilan, Iran0000000337939129Journal Article20210105More than 5.5 trillion cigarettes are manufactured, and approximately 4.5 trillion cigarette butts are being scattered across the globe per year. These cigarette butts are considered as one of the most hazardous wastes and environmental threats in the world. Thermochemical techniques can be used to turn biomass and solid wastes into valuable final products. Pyrolysis is a comfortable thermochemical technique for turning biomass into biochars, biofuels, briquette solid fuels, and further valuable products such as activated carbons, carbon black, and printing ink. In this study, it was attempted to review the available researches about pyrolysis of cigarette butts with an emphasis on transforming them into carbonated solid and liquid products. It was found that, in addition to the process variables, the type of cigarette butts treatment has a significant effect on the yield and quality of the finished goods. Further studies on the pyrolysis of cigarette butts, especially microwave-assisted pyrolysis and hybrid waste pyrolysis, seemed to be necessary. Solving the technical issues associated with the pyrolysis of cigarette butts to produce the value-added goods would contribute to their application in waste disposal and recycling of other resources. Future studies should focus on the separation methods with the help of gas products to provide the heat required in the reactor. Moreover, mixing the sewage sludge material, as a feed, with cigarette butts and application of appropriate models and experiments to attain the products with specific properties are recommended. The results of this study can be used to eliminate the hazards of the cigarette butts scattered in the environment and create the added value for the pyrolysis process.https://www.gjesm.net/article_244343_167a5938c4910f133699db9276c984ec.pdf