Skip to main content

Issue 2

Global NEST Journal cover

Global NEST Journal

ISSN numbers
1790-7632
2241-777X
Special notes

Special issue on "Wastewater Treatment". Inlcudes papers presented at CEST2015

Volume

Issue number
2
Publication month
June

Exploratory study to assess the impact of chitosan /bentonite ratio on the metal removal capacity of chitosan modified bentonite clay

by

Moetaz Elsergany et al. View all

Wastewater treatment

Adsorption is one of the methods that can be used for metal removal. In this study five metals were used cadmium, chromium, lead, copper and Nickel (Cd, Cr, Pb, Cu, and Ni) over a concentration range from 0.8 to about 7 mg l -1 for each metal. Adsorbents were prepared with increasing chitosan to...

Chitosan modified bentonite metal removal +2 more

The effect of Iron Ion on Removal Efficiency of Dissolved Organic Carbon (DOC) Using UV/TiO2

by

Laleh Kalankesh et al. View all

Water and Wastewater Treatment

Most of water sources throughout the world contain natural organic matter (NOM), which is the best description as a complex mixture of organic compounds. The effect of iron ion on removal efficiency of dissolved organic carbon (DOC) using UV/TiO 2 photo catalytic oxidation (TiO 2) was examined. In...

DOC dissolved organic carbon +3 more

Chemical and physical preparation of activated carbon using Raw bagasse for cationic dye adsorption

by

Azza El-Maghraby et al. View all

Water and Wastewater Treatment

Agriculture wastes like sugarcane bagasse are available in large quantities in Egypt. Various adsorbents from natural materials, industrial waste materials, agricultural by-products, and biomass based activated carbon can be used in the removal of various dyes. Raw Bagasse pith (RBP) was used to...

Activated carbon Agriculture Waste +1 more

Decolarization of methylene blue and methyl orange with Ag doped TiO2 under UV-A and UV-Visible conditions: process optimization by response surface method and toxicity evaluation

by

Deniz İzlen Çifçi et al. View all

Water and Wastewater Treatment

MB decolarization with pure TiO 2 and Ag doped TiO 2 based photocatalytic system were investigated under UV-A and UV-Visible conditions. Different ratios of Ag were used as metal dopant. 1% Ag-TiO 2 increased the decolorization efficiencies of MB and MO dyes, also the k app constant enhanced under...

dye Decolorization +4 more

Molecular weight distribution of pollutants in leachate from full scale landfill site

by

Fatma Busra Yaman et al. View all

Water and Wastewater Treatment

The main objective of this study was to investigate the differences between the main pollutants in young and intermediate age landfill leachate in terms of molecular weight distribution (MWD). Parameters of chemical oxygen demand (COD), five day - biochemical oxygen demand (BOD 5), ultraviolet...

Leachate age Landfill +1 more

Comparison of treatment efficiency and molecular weight distribution of membrane concentrate from textile wastewater

by

Fatma Busra Yaman et al. View all

Water and Wastewater Treatment

This study investigated the treatability and changes in molecular weight distributions (MWD) of membrane concentrate. Nanofiltration (NF) concentrate from textile wastewater was subjected sole anaerobic treatment (R1) and pre-ozonation (R2) plus anaerobic treatment. BOD 5, COD and TOC, color...

anaerobic treatment molecular weight distribution +3 more

Synthesis characterization and sorption properties of a sorbent synthesized using slag and red mud: Arsenic removal from spiked aqueous solutions

by

Pentari D et al. View all

Water and Wastewater Treatment

The aim of the present study was to synthesize a sorbent, for arsenic removal from aqueous solutions, reusing two waste materials (slag and red mud). The sorbent was prepared after chemical and thermal treatment, during which amorphous silica sol and FeOOH sol were produced simultaneously and form...

red mud slag +4 more

Cadmium Removal by using Pumice Modified with Iron Nanoparticles from Aqueous Solutions

by

Ghasem Azarian et al. View all

Water and Wastewater Treatment

In this study, the removal of cadmium by using pumice coated with iron nanoparticles (INPs) from synthetic wastewater was investigated. The effects of parameters influencing adsorption: contact time (10-20 min), pH (3-9), initial cadmium concentration (25-125 mg l -1) and adsorbent dose (2-10 g l -1...

Wastewater cadmium +2 more

Effect of sewage-contaminated water on seed production, heavy metals accumulation and seedling emergence in oat

by

Hassan Heidari et al. View all

Water and Wastewater Treatment

Two pot experiments were carried out to investigate effect of deficit irrigation with wastewater on seed yield, heavy metals and seedling emergence in oat ( Avena sativa). The research at seedling stage included different ratios of sewage-contaminated water (100% well water, 75% well water + 25%...

Chlorophyll drought +4 more

Dynamic modelling and design of free water surface constructed wetland system

by

Lyberatos G. et al. View all

Water and Wastewater Treatment

A dynamic mathematical model, based on the biochemical kinetic processes dominated in shallow free water systems was developed following the Activated Sludge Model (ASM) methodology. The model predicts plant mass and water uptake rate, BOD 5 and total nitrogen (TN) removal on a year round basis...

full-scale design organics and nitrogen removal +2 more

Degradation of Direct Black 38 dye catalyzed by lab prepared nickel hydroxide in aqueous medium

by

Muhammad Saeed et al. View all

Water and Wastewater Treatment

This study is focused on degradation of Direct Black dye, a common azo dye, catalyzed by nickel hydroxide in aqueous solution. Nickel sulfatehexahydrate, sodium hydroxide and sodium hypochlorite were used for synthesis of nickel hydroxide catalyst. The catalytic performance of nickel hydroxide for...

Direct Black 38 dye Kinetics analysis +3 more

Investigation of ciprofloxacin removal from aqueous solution by nanofiltration process

by

Esra Can Doğan et al. View all

Water and Wastewater Treatment

10 mg l -1 and the permeate flux behavior during dead-end stirred-cell filtration system using six type of commercially available loose and tight NF membranes (NP010, NP030, NF90, NF270, CK3001 and DS-5DK). The rejection of CIPRO and permeate flux value were evaluated according to the effects of...

Antibiotics Nanofiltration membranes +3 more

Dehalogenation of chlorobromophenol by ozonation using heterogeneous catalyst

by

sureshmskt@gmail.com et al. View all

Advanced Oxidation Processes

Ozone initiated oxidation of 2-chloro,4-bromophenol, (CBP) in aqueous system catalyzed by 1, 2.5 and 5% loadings of 1:1 molar ratio of Ce-Zr oxide on TiO 2 were studied. The synthesized catalysts were characterized via BET, ICP, PXRD, TPD, TEM, SEM, and FT-IR analysis. The powder XRD data revealed...

Chlorobromophenol Ozonation +4 more

An agricultural waste as a novel coagulant aid to treat high turbid water containing humic acids

by

haltaher@hotmail.com et al. View all

Water and Wastewater Treatment

Production of potable water from most raw water sources usually uses the coagulation/flocculation process to remove turbidity. Alum is widely used as a coagulant. However, there is concern about its associated risk of Alzheimer disease. As a result, there has been considerable interest in the...

Alum Corchorus Olitorius L. +4 more

A study on heterogeneous Fenton regeneration of powdered activated carbon impregnated with iron oxide nanoparticles

by

Konstantinos Plakas et al. View all

Wastewater treatment

This paper reports on the fabrication, characterization and testing of iron oxide nanoparticles – powdered activated carbon (PAC) composites for water treatment and PAC regeneration by Fenton reactions. Different wet impregnation procedures and iron loadings were assessed in terms of organic...

powdered activated carbon adsorption iron oxide +3 more

Photocatalytic ozonation for the degradation of tetradifon pesticide on Mn/TiO2 under visible light

by

sureshmskt@gmail.com et al. View all

Wastewater treatment

The photocatalytic activity of Mn doped TiO 2 for the ozonation of tetradifon pesticide in aqueous solution was studied. Various loadings of catalysts Mn/TiO 2 (1%, 2.5% and 5%) was prepared and characterized by standard analytical techniques. Photocatalyzed ozonation with 2.5% Mn/TiO 2 yielded 100%...

Tetradifon Oxidation +4 more

Nitrous oxide emission depending on the type of electron acceptor by a denitrifying phosphorus removal sludge

by

Wu G. et al. View all

Wastewater treatment

Denitrifying polyphosphate accumulating organisms (DNPAOs) are very promising for simultaneous nitrogen and phosphorus removal. While during denitrification, emission of a greenhouse gas, nitrous oxide (N 2O), may occur. In this study, DNPAOs were enriched in a lab-scale reactor, and N 2O emission...

nitrous oxide denitrifying polyphosphate accumulating organisms +2 more

N2O emission from a nitritation double-sludge system treating wastewater with a high concentration of ammonium

by

Wu G et al. View all

Wastewater treatment

A high efficient nitrite based double-sludge system combining sequential denitrification and nitritation reactors has been developed to remove nitrogen from wastewaters containing high concentrations of ammonium. System performance was examined and also nitrous oxide (N 2O) emission was measured...

high ammonium wastewater nitrous oxide +3 more