The Global NEST Journal is an open access journal that publishes original research articles, short papers and critical reviews on all aspects of Environmental Science and Technology. These comprise, but are not limited to, Pollution Control Technology, Global Environmental Change, Air Quality, Water Quality, Water and Waste Water Treatment, Solid Waste Management, Hazardous Substances and Risk...Read full aims and scope
Evaluating landslide susceptibility using environmental factors, fuzzy membership functions and GIS
General
A methodology for landslide susceptibility assessment to delineate landslide prone areas is presented using factor analysis and fuzzy membership functions and Geographic Information Systems (GIS). A landslide inventory of 51 landslides was created in the mountainous part of Xanthi prefecture (North...
Effects of urban development in microclimatic conditions in Thessaloniki
Air Quality
The urban planning, the buildings and covering materials of all surfaces, the distance between adjacent constructions, the height and the orientation of the buildings are some of the factors which affect the sustainable conditions in the city. This paper presents a project that aims at investigating...
Performance Analysis of Multi User Optical Wireless Network (IR, or UV light for signal carrying) under Different Environmental Conditions
Environmental Management and Policies
The field of optics is flourishing day by day on account of the wide usage of the internet and its associated technologies. Free Space Optics (FSO) is a data transmission technique that employs light propagation to send data. This technology is effective in those circumstances where fiber optic...
Determination of the optimal conditions for the adsorption of cadmium ions and phenol on chestnut(Castanea sativa) shell
General
Adsorption of cadmium ions and phenol from aqueous solutions on chestnut (Castanea sativa) shell was studied. An incomplete 33 factorial design was applied to investigate the influence of the initial cadmium ions (20-60-100 mg l-1) or phenol concentration (0.01-0.255- 0.5 g l-1), temperature (10-25...
Performance of different photocatalytic oxidation processes in petroleum wastewater treatment: A Comparative Study
Wastewater treatment
The present study was conducted to compare the performance of different solar photocatalytic processes (TiO 2 photocatalysis, photo-Fenton, photo-Fenton coupled with TiO 2 photocatalysis, and photo-Fenton coupled with TiO 2/ZnO photocatalysis) for the treatment of petroleum wastewater. The removal...
Future primary teachers’ knowledge and understanding of environmental quality issues – a questionnaire survey
General
This paper aims to investigate students’ awareness regarding the factors that affect the environmental quality in university classrooms. For this purpose a questionnaire survey was conducted, in which 314 undergraduate students of the School of Primary Education, Aristotle University of Thessaloniki...
Leaching and transport of Zn through soil profiles in a seasonal river of a mining area in SE Spain
General
Metal pollution can have adverse effects on human health but also on environment. Usually, risk is assessed on the basis of the total concentration of a trace metal in soils and sediments. Nevertheless, for checking the short and long-term true environmental impact of a trace element, one of the...
Evaluation of the response of dynamic changes in the natural attenuation of chloride-polluted groundwater via high-throughput sequencing: Degradation characteristics and environmental changes
Soil and groundwater contamination and remediation
Due to its cost-effectiveness and absence of secondary pollution, the biological approach for eradicating chloride pollution has attracted widespread interest. However, numerous obstacles, including the limited presence of degrading microbes and a substantial impact from environmental variables...
Use of Multivariate Statistical Analysis for the Assessment of Groundwater Chemical Variations in Wadi Bani Malik Area, Saudi Arabia
Water Quality
Multivariate statistical analysis including cluster analysis, factor analysis and correlation coefficient was applied to the groundwater samples to understand the groundwater condition in Wadi Bani Malik area. Water samples collected from the study area were analysed for physical parameters, major...
Optimization of crystal violet adsorption on common lilac tree leaf powder as natural adsorbent material
Water and Wastewater Treatment
In this study the efficiency of crystal violet dye removal from aqueous solutions using lilac tree leaf powder as adsorbent material was tested. After adsorbent surface analysis by SEM and FTIR technics, the influence of six controllable factor on dye adsorption process was assesses using a L27...
Toxic phytoplankton in eutrophic regional seas: an overview
Ecology, environmental change and management
Toxic algal blooms have become a major environmental problem over the last few decades because of their impact on fisheries, leisure activities, national income and human health. It is known that Harmful Algal Blooms (HABs) can occur naturally but the frequency of occurrence as well as their...
Leaching of lead from clinoptilolite at acidic conditions
General
The leachability of Pb2+ from natural greek clinoptilolite was investigated according to the standard procedures TCLP/EPA/RCRA (1311), EPA Methods 1310, 1320 and DIN 38414-S4. Through SEM/EDAX analysis it was shown that lead was uniformly loaded onto the particles subjected to acid treatment...
Assessing and Mapping the Vulnerability of Karstic Aquifer Using GIS and COP Model
General
Vulnerability assessment and production of the risk map of the contamination is considered as a managerial significant technique in the conservation of Karstic water resources. Karst aquifers in semi-arid regions of the West of Iran with respect to the region’s natural conditions are prone to...
Quick start-up of Mudanjiang wastewater treatment plant and factors influencing phosphorous removal
General
Successful start-up of a full-scale wastewater treatment plant (WWTP) is a key issue for the succeeding operation of WWTP on the one hand and the nutritious phosphorus removal is of great concern on the other. After the construction of Mudanjiang WWTP with a flow rate of 100,000 m3 d-1 in...
A study of alkali-activated concrete mixes with ground granulated blast furnace slag
General
The paper presents a laboratory study of concrete mixes based on the alkali-activation of an industrial by-product, ground granulated blast furnace slag (GGBS). A number of factors potentially affecting the resulting concrete quality in terms of workability and strengths were investigated (namely...
Atmospheric conditions associated with high and low ozone concentrations in the lower troposphere over the Aegean sea
General
In this study the vertical ozone profiles during summertime (June to August) of the MOZAIC (Measurement of Ozone and Water Vapor by Airbus in Service Aircraft) Project over the eastern Mediterranean airports of Heraklion and Rhodes in the Aegean Sea, have been analyzed in order to identify the major...
Biological treatment of water contaminated by hydrocarbons in three-phase gas-liquid-solid fluidized bed
General
Biological treatment has been carried out in two different systems: aerated closed and threephase fluidized bed reactors for hydrocarbons removal from refinery wastewaters. For the two systems, hydrodynamic study allowed the determination of operating conditions before treatment experiments. Then...
Interaction of pyrolysis conditions and soil texture on biochar mineralization and its effect on soil structure.
Biowaste
The effectiveness of biochar as a soil conditioner is depended on the feedstock type and pyrolysis conditions as these two factors determine its physical and chemical properties. Wheat straw was heated at two temperatures: a) 2500C and b) 5000C for two time periods: i)20 min and ii) 60 min to...
Setting priorities for wildfires suppression policy in Greece, using a relation between yearly burned areas and recovery time
General
In the Mediterranean region, fire is a natural factor, which contributes in the shaping of landscape and the preservation of a high degree of biodiversity. However, often repeated burning has negative impacts on the forested landscapes. When the processes of natural or artificial regeneration are...
Determination, Interpretation and Modeling of Chlorination by-Products Concentrations in Surface Waters
General
The formation of chlorination by-products (CBPs) was investigated by bench-scale chlorination experiments with surface waters from different sources in Lesvos island, Greece. The main factors studied were organic matter content of water (expressed as UV-272 absorbance), time and chlorine dose. The...
Determination of methyl mercury in a pilot-scale activated sludge wastewater treatment plant
General
The methylation of mercury has been investigated and documented mainly in sediments, fish and microorganisms, while limited number of relevant studies is available for wastewater. The procedure of mercury methylation can occur via biological pathway (by microorganisms) and via chemical or...
Assessment of mining soil improvement after construction and demolition wastes amendment additions evaluated by microbiological analysis
General
Major environmental problems in metallic mining areas come from the hazard of metal pollution of surrounding areas. Therefore, an appropriated management of these soils is necessary for minimizing the associated risks. Some properties of mining soils, such as elevated metal concentrations, pH and...
A comparison of two interaction matrix coding techniques used in a GIS-based tool for air quality assessment
General
The paper describes the development of a fast and easy-to-use qualitative tool for preliminary assessments of urban air quality related to road traffic. The tool is particularly aimed at the ability and budget of local government. It uses a novel interaction matrix-type methodology combined with...
Influence of the Presence of Long Chain Fatty Acids (Lcfas) in the Sewage on the Growth of M. Parvicella in Activated Sludge Wastewater Treatment Plants
General
Foaming and bulking problems in activated sludge treatment plants are associated to the presence of a variety of filamentous bacteria. However, it has been observed that M. parvicella is the most frequent filamentous microorganism causing sludge bulking and foaming, especially in treatment plants...
Study on community structure and nitrogen metabolism mechanism in A2O process under different hydraulic retention time conditions at high altitude region
Water treatment
The unique high-altitude environmental factors in the Linzhi region of Tibet have not been fully investigated in terms of their impact on the microbial mechanisms of water ecology, for which we explored the response of activated sludge microorganisms to different hydraulic retention times (HRT)...
Thematic areas
Circular economy
Climate change and air pollution
Solid waste management
Water and wastewater
Biosorption of Pb(II) Ions through Nanostructured Teff Straw based Magnetized Activated Biocarbon: Aspects on Modeling, Optimization, and Kinetics
Innovative environmental solutions
16-10-2024
Elimination of malachite green by modified Fenton like process. Application of Box Behnken design
Advanced Oxidation Processes...
16-10-2024
An Automatic Data-Driven Long-term Rainfall Prediction using Humboldt Squid Optimized Convolutional Residual Attentive Gated Circulation Model in India
Climate change mitigation...
14-10-2024
Efficient Biomedical Waste Management: Optimizing Segmentation and Classification with EnU-Net-DNN-BMWC
Solid Waste Management
14-10-2024
Nitrate source analysis of underground drinking water sources in Zhangjiakou main urban area and its health risk assessment
Water Quality
09-10-2024
Groundwater quality assessment for drinking and irrigation purposes in arid to semiarid region of Indus Basin of South Punjab, Pakistan
Water Quality
09-10-2024
Effective removal of Calcium and Magnesium Ions from boiler feed Water using Polyacrylonitrile supported titanium tungstovanadate composite ion exchange nanofiber
Water and Wastewater...
09-10-2024
Optimization of the Freeze Crystallization Process for Recovering of Copper (II) Sulphate from Electroplating Wastewater Using Response Surface Methodology (RSM)
Water and Wastewater...
08-10-2024
Air Pollution and Urban Economic Growth: A Study Based on Dynamic Models
Environmental Management and...
08-10-2024
Phytochemical characterization and valorization of Quercus ilex (west of Algeria)
General
30-10-2024
Optimizing Object Detection in Bio-Waste Management with Improved Hyperbolic Tangent YOLOv5 and Binarization-Adapted K-Means Algorithm
Biowaste
30-10-2024
Spatial-temporal variations and Attribution analysis of SO2 concentration in Beijing-Tianjin-Hebei regions from 2013 to 2022
Air Quality
28-10-2024
Optimization of Lipid Production from Paddy Straw Using Dilute Acid Pretreatment and Fermentation by Rhodosporidium Toruloides
General
28-10-2024
Natural Self-Purification of Creek Ecosystems: The Role of Foam Formation in Pollutant Absorption and Microbial Decomposition
Water and Wastewater...
28-10-2024
Comparative Sensitivity Analysis of GA, PSO, and PSO-GA Algorithms for Carbon Environment Development and Sustainability
Climate change mitigation...
28-10-2024
Impact on Green Synthesised Al2O3 Nanoparticles on Performance and Emission Properties as Biodiesel operated diesel engine
Sustainable Energy
28-10-2024
Trajectory pattern extraction to climate data and climate change analytics
Climate change mitigation...
23-10-2024
Investigation of Cephalexin Removal Using Biochar Derived from Nephelium lappaceum Seeds
Water and Wastewater...
14-10-2024