Biosorptive removal of arsenic from drinking water

Pandey, Piyush Kant; Choubey, Shweta; Verma, Yashu; Pandey, Madhurima; Chandrashekhar, K.

doi:10.1016/j.biortech.2008.07.063

Cited by 111 publications

(45 citation statements)

References 27 publications

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“…Arsenic exists in numerous oxidation states from -3, 0, ?3 and ?5 [2,4]. Two forms are common in natural waters: arsenite (AsO 3 -3 ) and arsenate (AsO 4 -3 ), referred to as arsenic (III) and arsenic (V). Pentavalent inorganic arsenic compounds predominate and are stable in oxygen rich aerobic environments.…”

Section: Introductionmentioning

confidence: 99%

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Use of Orange Peel Waste for Arsenic Remediation of Drinking Water

Khaskheli

Memon

Siyal

et al. 2011

Waste Biomass Valor

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Arsenic is a toxic element and is found in natural waters throughout the globe. The purpose of present study is to demonstrate the As (V) uptake by orange peel from real ground water samples through adsorption. Different parameters such as pH, shaking speed, contact time, adsorbent dosage, concentration, volume and temperature etc, were optimized. The maximum uptake capacity was observed at pH-7. The sorption was found to be time dependent and the kinetics followed well by the Morrisweber, Pseudo second order and Elovich equations. The Freundlich, Langmuir, Dubinin Redushkevich and FloryHuggins isotherm were used to model the adsorption behavior of arsenic retention. Thermodynamic parameters calculated from these isotherms show that the adsorption was spontaneous and endothermic in nature. Orange peel was found to be effective (*85%) for arsenic removal from real water systems containing concomitant ions.

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Section: Introductionmentioning

confidence: 99%

“…Arsenic classified as a group A and category 1 human carcinogen by the US Environmental Protection Agency (US EPA 1997) and the International Association For Research on Cancer (IARC 2004), respectively [3]. Arsenic exists in numerous oxidation states from -3, 0, ?3 and ?5 [2,4].…”

Section: Introductionmentioning

confidence: 99%

Use of Orange Peel Waste for Arsenic Remediation of Drinking Water

Khaskheli

Memon

Siyal

et al. 2011

Waste Biomass Valor

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“…All these ions are bigger than As(III) and As(V), and therefore, in their attendance, the percent removal reduced [52,53]. This might be owing to the competition of these ions with arsenic for the biosorption sites and/or owing to masking of biosorption sites by the bigger ions [54].…”

Section: Studies Of Influencing Co-existing Ionsmentioning

confidence: 99%

“…The percent removal of As(III) and As(V) increased in presence of both Cd 2+ and Fe 3+ ions. Mostly Cd 2+ and Fe 3+ ions could be biosorbed/bioaccumulated by immobilized bacterial cells and efficiently compensated the surface negative charge generated by specific biosorption/ bioaccumulation of As(III) and As(V) and acted as a bridge between immobilized bacterial cells and As(III) and As(V) ions, which has preferred the biosorption/bioaccumulation of As(III) and As(V) anions [52,55]. While the ionic radius of Cd 2+ is nearly the same, so there was no reducing effect [53].…”

Section: Studies Of Influencing Co-existing Ionsmentioning

confidence: 99%

Biosorptive Performance of Bacillus arsenicus MTCC 4380 Biofilm Supported on Sawdust/MnFe2O4 Composite for the Removal of As(III) and As(V)

Podder

Majumder

2016

Water Conserv Sci Eng

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One of the main environmental concerns of today is the occurrence of arsenic in wastewater. Targeting a solution for this problem, several efforts have been made towards research and application of cost-effective and effortlessly adaptable processes. The ability of a biofilm of Bacillus arsenicus MTCC 4380 supported on sawdust/MnFe 2 O 4 composite to biosorb/ bioaccumulate As(III) and As(V) was investigated in batch experiments. Optimum biosorption/bioaccumulation conditions were determined as a function of contact time and temperature. The equilibrium was achieved after about 220 min at 30°C temperature. Nonlinear regression analysis was done to determine the best-fit kinetic model based on three correlation coefficients and three error functions and also to predict the parameters involved in kinetic models. The results showed that both Brouers-Weron-Sotolongo and Avrami models for both As(III) and As(V) were capable of providing realistic explanation of biosorption/bioaccumulation kinetic. Applicability of mechanistic models showed that the rate controlling step in the biosorption/bioaccumulation of both As(III) and As(V) was film diffusion rather than intraparticle diffusion. The estimated thermodynamic parameters ΔG 0 , ΔH 0 , and ΔS 0 revealed that biosorption/bioaccumulation of both As(III) and As(V) was feasible, spontaneous, and exothermic under examined conditions. The activation energy (E a ) estimated from Arrhenius equation specified the nature of biosorption/bioaccumulation being ion exchange type. The effect of co-existing ions such as Cu 2+ , Zn 2+ , Bi 3+ , Cd 2+ , Fe 3+ , Pb 2+ , Co 2+ , Ni 2+ , Cr 6+ , and SO 4 2− at different concentrations was inspected.

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“…Arsenic is a highly toxic element and historically has been used as a poison [1]. Due to its toxicity and mobility, water pollution due to arsenic contamination has gained attention of the world and has been recorded by the World Health Organization (WHO) as a top priority issue.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of arsenate from aqueous solution by rice husk-based adsorbent

Khan

Chaudhuri

2013

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. Rice husk-based adsorbent (RHBA) was prepared by burning rice husk in a muffle furnace at 400°C for 4 h and adsorption of arsenate by the RHBA from aqueous solution was examined. Batch adsorption test showed that extent of arsenate adsorption depended on contact time and pH. Equilibrium adsorption was attained in 60 min, with maximum adsorption occurring at pH 7. Equilibrium adsorption data were well described by the Freundlich isotherm model. Freundlich constants K f and 1/n were 3.62 and 2, respectively. The RHBA is effective in the adsorption of arsenate from water and is a potentially suitable filter medium for removing arsenate from groundwater at wells or in households.

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Biosorptive removal of arsenic from drinking water

Cited by 111 publications

References 27 publications

Use of Orange Peel Waste for Arsenic Remediation of Drinking Water

Use of Orange Peel Waste for Arsenic Remediation of Drinking Water

Biosorptive Performance of Bacillus arsenicus MTCC 4380 Biofilm Supported on Sawdust/MnFe2O4 Composite for the Removal of As(III) and As(V)

Adsorption of arsenate from aqueous solution by rice husk-based adsorbent

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