ORIGINAL RESEARCH PAPER Environmental modeling
1. Geographic information system and process-based modeling of soil erosion and sediment yield in agricultural watershed

G.R. Puno; R.A. Marin; R.C.C. Puno; A.G. Toledo-Bruno

Volume 7, Issue 1 , Winter 2021, Pages 1-14

http://dx.doi.org/10.22034/gjesm.2021.01.01

Abstract
  BACKGROUND AND OBJECTIVES: The study explored the capability of the geographic information system interface for the water erosion prediction project, a process-based model, to predict and visualize the specific location of soil erosion and sediment yield from the agricultural watershed of Taganibong. ...  Read More

ORIGINAL RESEARCH PAPER Environmental health and ecotoxicology
2. The effect of short-term of fine particles on daily respiratory emergency in cities contaminated with wood smoke

R. Torres; N. Baker; G. Bernal; F. Peres; A. Maldonado; D.D. Caceres

Volume 7, Issue 1 , Winter 2021, Pages 15-32

http://dx.doi.org/10.22034/gjesm.2021.01.02

Abstract
  BACKGROUND AND OBJECTIVES: The goal of this study is to evaluate in a time-series study the short-term effects of particulate matter-2.5exposure on respiratory emergency visits in six central-southern Chilean cities highly contaminated by wood smoke. METHODS: Association was assessed using both distributed ...  Read More

ORIGINAL RESEARCH PAPER Solid waste management
3. Calorific and greenhouse gas emission in municipal solid waste treatment using biodrying

B. Zaman; W. Oktiawan; M. Hadiwidodo; E. Sutrisno; P. Purwono

Volume 7, Issue 1 , Winter 2021, Pages 33-46

http://dx.doi.org/10.22034/gjesm.2021.01.03

Abstract
  BACKGROUND AND OBJECTIVES: Urban intensity and activities produce a large amount of biodegradable municipal solid waste. Therefore, biodrying processing was adopted to ensure the conversion into Refuse Derived Fuel and greenhouse gases. METHODS: This study was performed at a greenhouse, using six biodrying ...  Read More

ORIGINAL RESEARCH PAPER Solid waste management
4. Willingness of end users to pay for e-waste recycling

H.T.T. Nguyen; C.-H. Lee; R.-J. Hung

Volume 7, Issue 1 , Winter 2021, Pages 47-58

http://dx.doi.org/10.22034/gjesm.2021.01.04

Abstract
  BACKGROUND AND OBJECTIVES: The sheer volume of electrical and electronic waste (e-waste) has presently been generated in Vietnam, posing a growing concern regarding its impact can have on the environment and human health. Therefore, the need for developing policies and regulations towards the environmentally ...  Read More

ORIGINAL RESEARCH PAPER Plant and Soil Environment
5. The ability of layered double hydroxides for nitrate absorption and desorption in crop and fallow rotation

M. Mohammadi; A. Mohammadi Torkashvand; P. Biparva; M. Esfandiari

Volume 7, Issue 1 , Winter 2021, Pages 59-78

http://dx.doi.org/10.22034/gjesm.2021.01.05

Abstract
  BACKGROUND AND OBJECTIVES: This study aims down to evaluate the ability of chloride magnesium- aluminium- layered double hydroxides (4:1) for nitrate adsorption from the soil solution in successive cropping periods. METHODS: The study was conductedunder long-term cropping periods, including first crop): ...  Read More

ORIGINAL RESEARCH PAPER Marine and coastal environmental pollution and management
6. Evaluation of genotoxic potential induced by marine cage culture

F. Turan; M. Turgut

Volume 7, Issue 1 , Winter 2021, Pages 79-88

http://dx.doi.org/10.22034/gjesm.2021.01.06

Abstract
  BACKGROUND AND OBJECTIVES: The eutrophication process is increased by anthropogenic or aquaculture facilities in marine ecosystems. DNA damage biomarkers for fish species detect genotoxic parameters for ecological risk assessment. The aim of the present study was to determine genotoxic potential induced ...  Read More

ORIGINAL RESEARCH PAPER Environmental science
7. Palm oil plantation waste handling by smallholder and the correlation with the land fire

H. Herdiansyah; E. Frimawaty

Volume 7, Issue 1 , Winter 2021, Pages 89-102

http://dx.doi.org/10.22034/gjesm.2021.01.07

Abstract
  BACKGROUND AND OBJECTIVES: From August to October 2019, several provinces in Sumatra and Kalimantan had faced severe forest fires, causing thousands of citizens to suffer respiratory disorders. This study aims to assess waste handling in palm oil plantation manage by smallholders and the correlation ...  Read More

ORIGINAL RESEARCH PAPER Energy and environment
8. The effects of glucose, nitrate, and pH on cultivation of Chlorella sp. Microalgae

H. Nouri; J. Mohammadi Roushandeh; A. Hallajisani; A. Golzary; S. Daliry

Volume 7, Issue 1 , Winter 2021, Pages 103-116

http://dx.doi.org/10.22034/gjesm.2021.01.08

Abstract
  BACKGROUND AND OBJECTIVES: Bioenergy is a phenomenon that has attracted humans’ attention for about a century. The desirable biological properties of chlorella sp.microalgae have turned it to one of the most ideal options for the production of biodiesel. However, the economic issues must be taken ...  Read More

CASE STUDY Wildlife ecology
9. Using multivariate generalized linear latent variable models to measure the difference in event count for stranded marine animals

R.E. Caraka; R.C. Chen; Y. Lee; T. Toharudin; C. Rahmadi; M. Tahmid; A.S. Achmadi

Volume 7, Issue 1 , Winter 2021, Pages 117-130

http://dx.doi.org/10.22034/gjesm.2021.01.09

Abstract
  BACKGROUND AND OBJECTIVES: The classification of marine animals as protected species makes data and information on them to be very important. Therefore, this led to the need to retrieve and understand the data on the event counts for stranded marine animals based on location emergence, number of individuals, ...  Read More

REVIEW PAPER Environmental microbiology
10. Application of environmental bacteria as potential methods of azo dye degradation systems

G. Manjarrez Paba; R. Baldiris Ávila; D. Baena Baldiris

Volume 7, Issue 1 , Winter 2021, Pages 131-154

http://dx.doi.org/10.22034/gjesm.2021.01.10

Abstract
  BACKGROUND AND OBJECTIVES:The objective of this study isto present a description of the main characteristics of azo dyes and the different treatment methods used to remove them from water. There is a special emphasis given to the benefits associated with biological treatment, predominantly those related ...  Read More