ORIGINAL RESEARCH PAPER Environmental risk assessment and management
1. Inland wetlands mapping and vulnerability assessment using an integrated geographic information system and remote sensing techniques

C.E. Akumu; J. Henry; T. Gala; S. Dennis; C. Reddy; F. Tegegne; S. Haile; R.S. Archer

Volume 4, Issue 4 , Autumn 2018, Pages 387-400

http://dx.doi.org/10.22034/gjesm.2018.04.001

Abstract
  The understanding of inland wetlands’ distribution and their level of vulnerability is important to enhance management and conservation efforts. The aim of the study was to map inland wetlands and assess their distribution pattern and vulnerability to natural and human disturbances such as climate ...  Read More

ORIGINAL RESEARCH PAPER Environmental biology and biotechnology
2. Kinetics of carbon dioxide, methane and hydrolysis in co-digestion of food and vegetable wastes

D. Pham Van; M.G. Hoang; S.T. Pham Phu; T. Fujiwara

Volume 4, Issue 4 , Autumn 2018, Pages 401-412

http://dx.doi.org/10.22034/gjesm.2018.04.002

Abstract
  Kinetic models which can express the behaviors of hydrolysis and biogas generation more precisely than the conventional models were developed. The developed models were evaluated based on the experimental data of six batch reactors. Anaerobic digestion test was co-digestion of food and vegetable waste ...  Read More

ORIGINAL RESEARCH PAPER Environmental bioremediation and measurement
3. Hydrocarbon contaminated water remediation using a locally constructed multi-stage bioreactor incorporated with media filtration

S. Antwi-Akomea; B. Fei-Baffoe; E.J.D. Belford; M. Borigu

Volume 4, Issue 4 , Autumn 2018, Pages 413-426

http://dx.doi.org/10.22034/gjesm.2018.04.003

Abstract
  The present study investigated the coupling effect of biodegradation and media filtration in treating hydrocarbon contaminated water. The study recorded reductions in total petroleum hydrocarbon, total dissolved solids, turbidity and microbial load. The study was essentially a simulated pump and treat ...  Read More

ORIGINAL RESEARCH PAPER Air pollution control and management
4. Statistical trend analysis and forecast modeling of air pollutants

A. Jaiswal; C. Samuel; V.M. Kadabgaon

Volume 4, Issue 4 , Autumn 2018, Pages 427-438

http://dx.doi.org/10.22034/gjesm.2018.04.004

Abstract
  The study provides a statistical trend analysis of different air pollutants using Mann-Kendall and Sen’s slope estimator approach on past pollutants statistics from air quality index station of Varanasi, India. Further, using autoregressive integrated moving average model, future values of air ...  Read More

ORIGINAL RESEARCH PAPER Environmental modeling
5. Artificial intelligence-based approaches for multi-station modelling of dissolve oxygen in river

G. Elkiran; V. Nourani; S.I. Abba; J. Abdullahi

Volume 4, Issue 4 , Autumn 2018, Pages 439-450

http://dx.doi.org/10.22034/gjesm.2018.04.005

Abstract
  ABSTRACT: In this study, adaptive neuro-fuzzy inference system, and feed forward neural network as two artificial intelligence-based models along with conventional multiple linear regression model were used to predict the multi-station modelling of dissolve oxygen concentration at the downstream of Mathura ...  Read More

ORIGINAL RESEARCH PAPER Environmental monitoring and statement
6. Physicochemical characteristics and trophic state evaluation of post glacial mountain lake using multivariate analysis

S. Nayek; S. Gupta; K.K. Pobi

Volume 4, Issue 4 , Autumn 2018, Pages 451-464

http://dx.doi.org/10.22034/gjesm.2018.04.006

Abstract
  The current study deals with the physicochemical characterization, temporal variability and trophic state evaluation of a post glacial mountain lake in eastern Himalaya during the period of 2014-2016. Notable seasonal variations are recorded for physicochemical parameters of lake water. The values for ...  Read More

ORIGINAL RESEARCH PAPER Energy and environment
7. Economic assessment of renewable power generation based on wind speed and solar radiation in urban regions

Y. Kassem; H. Gökçekuş; H. Çamur

Volume 4, Issue 4 , Autumn 2018, Pages 465-482

http://dx.doi.org/10.22034/gjesm.2018.04.007

Abstract
  Economic evaluation of 12 MW grid-connected wind farms and PV power plants in two regions in Northern Cyprus for electricity generation was investigated. The wind speed, sunshine duration, and solar global radiation characteristics were analyzed using monthly data collected over 17 years (2000-2016) ...  Read More

CASE STUDY Environmental monitoring and statement
8. Seasonal variation of air quality index and assessment

S.D. Kumar; A. Dash

Volume 4, Issue 4 , Autumn 2018, Pages 483-492

http://dx.doi.org/10.22034/gjesm.2018.04.008

Abstract
  Different methods have been designed to calculate the air quality index in form of mathematical formula. But the formula designed by Central Pollution Control Board in 2014 is more robust to find out the air quality category. The index has been calculated based upon four parameters like particulate matters ...  Read More

CASE STUDY Solid waste management
9. Estimation of landfill gas generation in a municipal solid waste disposal site by LandGEM mathematical model

S.S. Hosseini; K. Yaghmaeian; N. Yousefi; A.H. Mahvi

Volume 4, Issue 4 , Autumn 2018, Pages 493-506

http://dx.doi.org/10.22034/gjesm.2018.04.009

Abstract
  Anaerobic decomposition of organic compounds in landfills is responsible for generation of greenhouse gases. The present study aimed to determine the total gas and methane emission from a landfill located in Hamedan (west of Iran) from 2011 to 2030. LandGEM 3.02 model was used to estimate the gas emission ...  Read More

REVIEW PAPER Climate change and global warming
10. An effective and ecofriendly suggestion to decrease atmospheric carbon dioxide by using NH3 gas

H. Eryilmaz

Volume 4, Issue 4 , Autumn 2018, Pages 507-520

http://dx.doi.org/10.22034/gjesm.2018.04.010

Abstract
  Global warming is increasing permanently, because the concentration of CO2 in the atmosphere is rising continuously. According to National Oceanographic and Atmospheric Administration, the concentration of CO2 in the atmosphere was 407 ppm in June 2016 and 413 ppm in April 2017 as a last record for now. ...  Read More