Removal of arsenate from groundwater by electrocoagulation method

Ali, Imran; Khan, Tabrez Alam; Asim, Mohd

doi:10.1007/s11356-011-0681-3

Cited by 162 publications

(37 citation statements)

References 40 publications

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“…It can be observed that both zinc and copper electrode assemblies attained a significant removal of arsenite. For low arsenite concentration the percentage removal was much more as compare to the solution of higher concentration (Ali et al 2012). The graph clearly indicates a sharp decrease in the percentage removal (99.89-82.92 and 99.56-78.77) for 2.0-25.0 mg/L for zinc and copper electrodes.…”

Section: Effect Of Arsenite Concentrationmentioning

confidence: 87%

Arsenite removal from water by electro-coagulation on zinc–zinc and copper–copper electrodes

Ali

Asim

Khan

2012

Int. J. Environ. Sci. Technol.

150

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Removal of arsenite from aqueous solution was carried out using electro-coagulation method. The experiments were conducted using copper-copper and zinc-zinc electrodes. The optimized experimental parameters were 2.0 mg/L initial concentration, 16.0-min processing time, 6.0 pH, 3.0-V applied voltage and 30°C temperature for zinc-zinc electrodes while these values for copper-copper electrodes were 2.0 mg/L initial concentration, 20.0-min processing time, 7.0 pH, 5.0-V applied voltage and 30°C temperature. The results demonstrated that zinc-zinc and copper-copper electrodes removed arsenite up to 99.89 and 99.56 %, respectively. The treated water was clear, colorless and odorless without any secondary contamination. There was no change in water quality after the removal of arsenite. The reported method is capable to remove arsenite from water at 6-7 pH range, which is a pH range of natural water. Therefore, this method may be the choice of arsenite removal from natural ground water.

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Section: Effect Of Arsenite Concentrationmentioning

confidence: 87%

Arsenite removal from water by electro-coagulation on zinc–zinc and copper–copper electrodes

Ali

Asim

Khan

2012

Int. J. Environ. Sci. Technol.

150

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“…Among various water treatment methods such as coagulation/flocculation (Ali et al 2012;Anjaneyulu et al 2005), precipitation (Zhu et al 2007), advanced oxidation (Azbar et al 2004), and photo-catalytic degradation (Yang et al 1998;Barka et al 2010), the adsorption process is considered to be the best method due to simplicity of design and operation, economic feasibility and reusability of adsorbents (Anjaneyulu et al 2005;Hao et al 2000;Khan et al 2015;Khan et al 2014a). The commercial activated carbon, both granular and powdered, is an excellent adsorbent for pollutants' removal from wastewater because of its high surface area and reactivity, adequate pore size/volume distribution, and relatively high mechanical strength (Khan et al 2014b).…”

Section: Introductionmentioning

confidence: 99%

Adsorptive uptake of basic dyes from aqueous solution by novel brown linseed deoiled cake activated carbon: Equilibrium isotherms and dynamics

Khan

Khan²,

Shahjahan³

2016

Journal of Environmental Chemical Engineering

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“…It was estimated that around 150 million people in the world are probably affected by arsenic contamination in groundwater, especially in some Asian country as China, India, and Bangladesh (Ali et al 2012). As was found in shallow tubewells in the low-lying Mekong Delta at Prey Vêng province, Cambodia.…”

Section: The Situation In the Mekong River Deltamentioning

confidence: 99%

Remarks on the current quality of groundwater in Vietnam

Luu

2017

Environ Sci Pollut Res

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This paper reviews the current quality of groundwater in Vietnam. In Vietnam, groundwater is obtained primarily from tubewells, which have high concentrations of pollutants such as As, Fe, Mn, and NH 4 + . In the areas where groundwater tests were conducted, arsenic levels ranged from 0.1-3050 μg/L, which substantially exceed the standard of 10 μg/L which has been established by the WHO. Contamination sources are distributed over a large area from the Red River Delta in the north to the Mekong River Delta in the south, putting as many as ten million people at risk of adverse health effects. Levels of arsenic and iron in sediment are strongly correlated, which indicate that the presence of arsenic in groundwater results from the reduction of arsenic bound to iron oxyhydroxides. It is important to raise awareness of these issues among the Vietnamese public by disseminating information about the negative effects of contaminated drinking water, as well as carrying out long-term research projects to identify other sources of contamination and improving water treatment technology and water management capabilities.

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Removal of arsenate from groundwater by electrocoagulation method

Cited by 162 publications

References 40 publications

Arsenite removal from water by electro-coagulation on zinc–zinc and copper–copper electrodes

Arsenite removal from water by electro-coagulation on zinc–zinc and copper–copper electrodes

Adsorptive uptake of basic dyes from aqueous solution by novel brown linseed deoiled cake activated carbon: Equilibrium isotherms and dynamics

Remarks on the current quality of groundwater in Vietnam

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