wastewater pollution treatment Articles

Does an environmental Kuznets curve for waste pollution exist in China?

China is an emerging and leading world economy. The pace of economic change has been tremendously rapid since the beginning of economic reforms. Despite the importance of the Environmental Kuznets Curve (EKC) and environmental problems in China, no previous study has tested the EKC in China because of the difficulty in obtaining data and the need to adjust the data. The focus of this paper is to ...

Dec. 19, 2008

By Inderscience Publishers
Hydroxyl radical production in electrochemical reactor

OH radical production during electrolysis of water was monitored to show that it could be involved in an indirect oxidation of pollutants in electrochemical wastewater treatment. The OH radical concentration in the electrochemical reactor was measured by using a probe compound, p-chlorobenzoate (pCBA). Titanium and titanium coated with RuO2/PtO2 were used as a cathode and an anode, respectively, ...

Jul. 25, 2006

By Inderscience Publishers
Dense TiO2 thin film: photoelectrochemical and photocatalytic properties

Sol-gel derived transparent dense TiO2 thin film was dip-coated on glass substrates. The surface morphology of the film was examined by scanning electron microscope (SEM) and its crystal phase was characterised by X-ray diffractometer (XRD). Photoelectrochemical properties of the TiO2 films were evaluated in the presence of organic compounds with different molecular structure. At low ...

Aug. 7, 2007

By Inderscience Publishers
Adsorption of aniline onto hexagonal mesoporous silicate monoliths (HOM-2)

Hexagonally highly ordered monolithic mesoporous silica and aluminosilicate composites (HOM-2 and Al/HOM-2, respectively) were used as adsorbents for removal of aniline in aqueous solution. These HOM-adsorbents were fabricated by using a simple, reproducible and direct synthesis strategy in which instantly preformed liquid crystalline phase of Brij 56 (C16EO10) surfactant was used as templates. ...

Oct. 17, 2008

By Inderscience Publishers
Treatment of contaminated water with pesticides via adsorption

Static adsorption experiments of pesticides (alachlor, trifluralin and prometryn) on amberlite XAD-4 were carried out at pH 5. The effect of ionic strength (0.01–2 M) on the pesticides adsorption was also investigated. This effect is more pronounced for the adsorption of more polar molecules (alachlor and prometryn) compared to trifluralin adsorption. This phenomenon can be attributed to the ...

Jul. 25, 2006

By Inderscience Publishers
A comparative study on removal of basic violet 10 by adsorption and photocatalytic degradation using low cost activated carbon

This study compare the adsorption and photodegradation methods for the removal of basic violet 10 (BV) dye. Adsorption studies were carried out using activated carbon prepared from rice husk (RC). The photocatalytic degradation reactions using RC + TiO2 mixture were carried out under UV irradiation. The influence of operating parameters governing dye removal such as contact time, pH and effect of ...

Aug. 1, 2013

By Inderscience Publishers
Treatment of distillery anaerobic effluent in a hybrid biological reactor

The treatability of anaerobic effluent from a molasses-based distillery was studied in a shaft-type hybrid bioreactor under purely suspended growth and hybrid system containing 5 mm tyre-tube beads. The Ks, k, Y and k found as 111.29 mg/l, 0.026/h, 0.4607 and 0.0040/h respectively. The maximum COD removal was 51.7% at a loading rate of 5.250 kg d−1 m−3. The overall removal rate was 0.0431, ...

Jan. 29, 2008

By Inderscience Publishers
Membranes and theoretical modelling of liquid–gas membrane separation for aromatic compounds removal from water: a review

Liquid–gas membrane separation techniques - namely, vacuum membrane distillation, membrane air–stripping/sweeping and pervaporation - are non–equilibrium membrane separation processes emerging for the removal of aromatic compounds from industrial wastewater and polluted ground waters. This review focuses on polymeric hydrophobic membranes which are commonly employed in the liquid–gas membrane ...

Oct. 3, 2012

By Inderscience Publishers
Adsorption of C.I. Basic Blue 9 on chitosan-based materials

In this study, N-benzyl mono- and disulfonate derivatives of chitosan are used for the removal of dyes from aqueous solution. The effectiveness of these materials in adsorbing basic blue 9 (BB 9) has been studied as a function of agitation time, initial concentration and solution salinity. Experimental results confirmed the strong cation exchanger character of the sulfonated derivatives and ...

Oct. 17, 2008

By Inderscience Publishers
Non-Thermal Plasma degradation of wastewater in presence of titanium oxide by gliding arc discharge

Degradation of polluted plastic and rubber wastewater using the plasmachemical and plasmacatalytic process has been studied by non-thermal gliding arc technique. The gaseous species formed in the discharge, and especially the °OH radicals, induced strong oxidising effects in the target solution. The treatment with TiO2 photo-catalyst led to a degradation of 80% in 60 min, a decrease of turbidity ...

Dec. 8, 2008

By Inderscience Publishers
Integrated assessment of the control of wastewater pollution in Zarqa Governate, Jordan

Zarqa, the second largest city in Jordan and home of 52% of the industries in the country, suffers the worst water shortage and pollution. The purpose of this paper is to illustrate the potential problems associated with the pollution by industrial and municipal wastewater in Zarqa region and the possibilities for its control. The paper examines the major causes of pollution, the qualities and ...

Jan. 5, 2005

By Inderscience Publishers
Photocatalytic and adsorption studies on the removal of dye Congo red from wastewater

Many industries such as paper, food, cosmetics, textiles etc. use dye in order to colour their products. The presence of these dyes in water even at very low concentration is highly visible and undesirable. Colour is the first contaminant to be recognised. Photocatalytic technique and adsorption methods offer a good potential to remove colour from wastewater. In the present paper these two ...

Jul. 25, 2006

By Inderscience Publishers
Biosorption of acid dye on Pueraria lobata ohwi. Equilibrium and kinetic modelling

The applicability of the biomaterial kudzu (Pueraria lobata ohwi) for the removal of the acid dye Erionil Marine Blau (EMB) from aqueous medium was investigated. The equilibrium results were described by the Langmuir and Freundlich models and the isotherms parameters were calculated. The experimental data were correlated better by the Freundlich model (R² = 0.9029). The effect of the system ...

Oct. 17, 2008

By Inderscience Publishers
Sono-biodegradation: a promising alternative to existing bioremediation methodologies

Pollution of fresh water has become a serious concern today for developing countries. There are umpteen treatment methodologies and protocols, but still there exists a demand for new technologies for wastewater treatment. Extensive research on pollutants and increased toxicological studies have paved the way for new technologies, such as ultrasound treatment of pollutants and wastewater ...

Oct. 11, 2010

By Inderscience Publishers
An overview of wastewater treatment in distillery industry

Distilleries generate large volumes of high-strength wastewater that is of serious environmental concern. Spentwash disposal even after conventional treatment is hazardous and has high pollution potential due to the accumulation of recalcitrant compounds. Various physico-chemical and biological treatment options are available for the treatment of distillery wastewaters, but most of them could not ...

Dec. 3, 2009

By Inderscience Publishers
Assessment of water requirements of crops for the reuse of municipal wastewaters from the wastewater treatment plant at Patras, Greece

The possibilities of reuse, for irrigation, of the treated wastewaters produced in the biological wastewater treatment plant at Patras, Greece, have been examined. The practice of water reuse in soils, and cultivation, releases large amounts of water that are very useful to areas that face water shortage; it also contributes to the protection of the water ecosystem. The suggested safe reuse in ...

Nov. 7, 2006

By Inderscience Publishers
Removal of phenol using mushrooms and immobilized polyphenol oxidase in a plug flow reactor

Phenols are toxic and hazardous pollutants, hence their removal from industrial effluents is important. In this study, edible mushroom particles, which are a cheap and natural source of polyphenol oxidase (PPO), were used directly for phenol removal in a plug flow reactor. Initially, 60% phenol removal was achieved, but this percentage decreased after a second use. When the reactor included PPO ...

Aug. 22, 2005

By Inderscience Publishers
Removal of Ni(II) from electroplating rinse waters using cation-exchange resins: batch and column studies

The adsorption of Ni (II) from nickel electro plating rinse water has been attempted. Indion 225 and Dueolite C 20 cation-exchange resins through batch and column mode for the recovery of Ni (II), which showed a remarkable increase in sorption capacity. On the basis of isotherm analysis, more efficient adsorbent is chosen for column mode adsorption studies. The continuous-flow study was to ...

Oct. 1, 2010

By Inderscience Publishers
Adsorption of Acid Yellow 99 onto DEDMA-sepiolite from aqueous solutions

The adsorption of Acid Yellow 99 (AY99) onto dodecylethyldimethylammonium (DEDMA)-sepiolite was investigated in aqueous solution in a batch system with respect to pH, contact time and temperature. The surface modification of DEDMA-sepiolite was examined by the FTIR technique. The experimental data fitted very well with the pseudo-second-order kinetic model with the correlation coefficients above ...

Oct. 17, 2008

By Inderscience Publishers
One-step analysis of bubble-particle capture interaction in dissolved-air flotation

The capture of particles by air microbubbles in dissolved air flotation has been analysed using a one-step (holistic) approach, which numerically solved the motion equation (with the inclusion of microhydrodynamic resistance functions and surface forces) for both the bubble-particle collision and attachment interactions. Model predictions with the inclusion of non-DLVO attractive surface force ...

Jul. 27, 2007

By Inderscience Publishers

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