A nanofiltration-coagulation integrated system for separation and stabilization of arsenic from groundwater.

doi:10.1016/J.SCITOTENV.2014.01.041

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A nanofiltration-coagulation integrated system for separation and stabilization of arsenic from groundwater.

Journal Article•DOI•

A nanofiltration-coagulation integrated system for separation and stabilization of arsenic from groundwater.

Parimal Pal¹, Sankha Chakrabortty¹, Lassi Linnanen²•Institutions (2)

National Institute of Technology, Durgapur¹, Lappeenranta University of Technology²

01 Apr 2014-Science of The Total Environment (Elsevier)-Vol. 476, pp 601-610

TL;DR: A membrane-integrated hybrid treatment system has been developed for continuous removal of arsenic from contaminated groundwater with simultaneous stabilization of arsenic rejects for safe disposal, resulting in a total and sustainable solution to the problem of arsenic contamination of groundwater.

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About: This article is published in Science of The Total Environment.The article was published on 2014-04-01. It has received 76 citations till now. The article focuses on the topics: Arsenic contamination of groundwater & Arsenic.

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Journal Article•DOI•

Nanofiltration membranes review: Recent advances and future prospects

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Abdul Wahab Mohammad¹, Yeit Haan Teow¹, Wei Lun Ang¹, Ying Tao Chung¹, Darren L. Oatley-Radcliffe², Nidal Hilal², Nidal Hilal³ - Show less +3 more•Institutions (3)

National University of Malaysia¹, Swansea University², Qatar Airways³

15 Jan 2015-Desalination

TL;DR: Nanofiltration (NF) membranes have come a long way since it was first introduced during the late 80's as mentioned in this paper, and significant development has taken place in terms of the fundamental understanding of the transport mechanism in NF membranes, which has been translated into predictive modeling based on the modified extended Nernst-Planck equation.

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1,374 citations

Journal Article•DOI•

Arsenic and antimony in water and wastewater: overview of removal techniques with special reference to latest advances in adsorption

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Gabriela Ungureanu¹, Sílvia C.R. Santos¹, Rui A.R. Boaventura¹, Cidália M.S. Botelho¹•Institutions (1)

Faculdade de Engenharia da Universidade do Porto¹

15 Mar 2015-Journal of Environmental Management

TL;DR: An overview of As and Sb chemistry, distribution and toxicity, which are relevant aspects to understand and develop remediation techniques are presented, and several alternative sorbents have been presenting promising results.

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492 citations

Cites background from "A nanofiltration-coagulation integr..."

...A new nanofiltrationecoagulation integrated system was recently proposed for arsenic removal from groundwater (Pal et al., 2014)....
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Journal Article•DOI•

Chemical coagulation process for the removal of heavy metals from water: a review

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Xiaomin Tang¹, Huaili Zheng¹, Houkai Teng, Yongjun Sun¹, Jinsong Guo², Wanying Xie¹, Qingqing Yang¹, Wei Chen¹ - Show less +4 more•Institutions (2)

Chongqing University¹, Chinese Academy of Sciences²

20 Jan 2016-Desalination and Water Treatment

TL;DR: In this paper, a review of the performance of chemical coagulation process in removing heavy metal from water is presented. And the main mechanisms of the removal of heavy metals are adsorption, complexation, and coprecipitation.

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Abstract: Heavy metal pollution has become one of the most urgent environmental issues, which also poses a potential threat to the human health. This article is suggested to review the advance on the performance of chemical coagulation process in removing heavy metal from water. Chemical coagulation process is considered to be a valid method which is determined by the hydrolyzed species of the inorganic coagulants under different raw water and coagulation conditions. And the main mechanisms of the removal of heavy metals are adsorption, complexation, and coprecipitation. Compared with the aluminum-based coagulants, the iron-based coagulants have better performance due to the use of wide pH range and large surface area of the resulting flocs. During the chemical coagulation process, the valence state of arsenic and antimony could affect the removal efficiency. Thus, the oxidants and reductants are often combined with inorganic coagulants used in this process. It is found that pH is an important factor greatl...

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155 citations

Journal Article•DOI•

Arsenic removal by nanoparticles: a review

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Mirna Habuda-Stanić¹, Marija Nujić¹•Institutions (1)

Josip Juraj Strossmayer University of Osijek¹

21 Mar 2015-Environmental Science and Pollution Research

TL;DR: This review presents an overview of nanoparticles and nanobased adsorbents and its efficiencies in arsenic removal from water and highlights the application of nanomaterials and their properties, mechanisms, and advantages over conventional adsorbent for arsenic Removal from contaminated water.

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Abstract: Contamination of natural waters with arsenic, which is both toxic and carcinogenic, is widespread. Among various technologies that have been employed for arsenic removal from water, such as coagulation, filtration, membrane separation, ion exchange, etc., adsorption offers many advantages including simple and stable operation, easy handling of waste, absence of added reagents, compact facilities, and generally lower operation cost, but the need for technological innovation for water purification is gaining attention worldwide. Nanotechnology is considered to play a crucial role in providing clean and affordable water to meet human demands. This review presents an overview of nanoparticles and nanobased adsorbents and its efficiencies in arsenic removal from water. The paper highlights the application of nanomaterials and their properties, mechanisms, and advantages over conventional adsorbents for arsenic removal from contaminated water.

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145 citations

Cites background from "A nanofiltration-coagulation integr..."

...2013), membrane separation (Ning 2002; Shih 2005; Pal et al. 2014), ion exchange (Flicklin 1983; Katsoyiannis and Zouboulis 2002; Tresintsi et al....
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...…(Khan et al. 2002; Wickramasinghe et al. 2004; Bilici Baskan and Pala 2010; Mólgora et al. 2013), membrane separation (Ning 2002; Shih 2005; Pal et al. 2014), ion exchange (Flicklin 1983; Katsoyiannis and Zouboulis 2002; Tresintsi et al. 2014), and adsorption (Lin and Wu 2001; Zeng 2003;…...
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Journal Article•DOI•

Environmental impact of desalination processes: Mitigation and control strategies

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Khaled Elsaid¹, Enas Taha Sayed², Mohammad Ali Abdelkareem², Ahmad Baroutaji³, Abdul Ghani Olabi², Abdul Ghani Olabi⁴, Abdul Ghani Olabi⁵ - Show less +3 more•Institutions (5)

Texas A&M University¹, Center for Advanced Materials², University of Wolverhampton³, Aston University⁴, University of Sharjah⁵

20 Oct 2020-Science of The Total Environment

TL;DR: The work shows clearly that many EIs can be eliminated or minimized by incorporating specific design criteria and process improvements, and shows that the feedwater source has shown to have a great effect on EIs.

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108 citations

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Journal Article•DOI•

Adsorption of arsenite and arsenate within activated alumina grains: Equilibrium and kinetics

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Tsair Fuh Lin¹, Jun Kun Wu¹•Institutions (1)

National Cheng Kung University¹

01 Jun 2001-Water Research

TL;DR: The agreement among the models and experimental data indicated that the adsorption and diffusion of arsenate and arsenite can be simulated by the proposed model.

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534 citations

"A nanofiltration-coagulation integr..." refers background or methods in this paper

...A variety of treatment options have been documented by the researchers world-wide for removal of arsenic from the contaminated groundwater and these include chemical coagulation–precipitation, adsorption, ion exchange, membrane filtration, membrane distillation, photo-catalytic oxidation and ultrafiltration (Lin and Wu, 2001; Zouboulis and Katsoyiannis, 2002; Gholami et al., 2006; Pal et al., 2007; Hsieh et al., 2008; Nguyen et al., 2008; Pal and Manna, 2010)....
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...…coagulation–precipitation, adsorption, ion exchange, membrane filtration, membrane distillation, photo-catalytic oxidation and ultrafiltration (Lin and Wu, 2001; Zouboulis and Katsoyiannis, 2002; Gholami et al., 2006; Pal et al., 2007; Hsieh et al., 2008; Nguyen et al., 2008; Pal and Manna,…...
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Journal Article•DOI•

Arsenic removal with iron(II) and iron(III) in waters with high silicate and phosphate concentrations.

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Linda C. Roberts¹, Stephan J. Hug², Thomas Ruettimann², Morsaline Billah², and Abdul Wahab Khan², Mohammad Tariqur Rahman² - Show less +2 more•Institutions (2)

Swiss Federal Institute of Aquatic Science and Technology¹, Khulna University²

01 Jan 2004-Environmental Science & Technology

TL;DR: Application of Fe(II) instead of the usually applied Fe(III) is shown to be advantageous, as oxidation of Fe (II) by dissolved oxygen causes partial oxidation of As (III) and iron( III) (hydr)oxides formed from Fe( II) have higher sorption capacities.

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Abstract: Arsenic removal by passive treatment, in which naturally present Fe(II) is oxidized by aeration and the forming iron(III) (hydr)oxides precipitate with adsorbed arsenic, is the simplest conceivable water treatment option. However, competing anions and low iron concentrations often require additional iron. Application of Fe(II) instead of the usually applied Fe(III) is shown to be advantageous, as oxidation of Fe(II) by dissolved oxygen causes partial oxidation of As(III) and iron(III) (hydr)oxides formed from Fe(II) have higher sorption capacities. In simulated groundwater (8.2 mM HCO3-, 2.5 mM Ca2+, 1.6 mM Mg2+, 30 mg/L Si, 3 mg/L P, 500 ppb As(III), or As(V), pH 7.0 ± 0.1), addition of Fe(II) clearly leads to better As removal than Fe(III). Multiple additions of Fe(II) further improved the removal of As(III). A competitive coprecipitation model that considers As(III) oxidation explains the observed results and allows the estimation of arsenic removal under different conditions. Lowering 500 μg/L As(III)...

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480 citations

"A nanofiltration-coagulation integr..." refers background in this paper

...Quite a few studies on such coagulation–precipitation involving salts of iron, aluminum and calcium have been reported in the literature (Camacho et al., 2000; Roberts et al., 2004; Song et al., 2006; Baskan and Pala, 2009, 2010; Sullivan and Tyrer, 2010;Wang et al., 2011; Randall, 2012)....
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Journal Article•DOI•

Application of nanofiltration for removal of pesticides, nitrate and hardness from ground water: rejection properties and economic evaluation

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B. Van der Bruggen¹, K. Everaert¹, D. Wilms¹, Carlo Vandecasteele¹•Institutions (1)

Katholieke Universiteit Leuven¹

15 Nov 2001-Journal of Membrane Science

TL;DR: In this paper, a double pass module design with recirculation of the concentrate in the second module to the feed of the first module was used to remove four pesticides (atrazine, simazine, diuron and isoproturon), hardness and nitrates with the membranes NF70, NF45, UTC-20 and UTC-60.

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259 citations

Journal Article•DOI•

Arsenic removal from high-arsenic water by enhanced coagulation with ferric ions and coarse calcite

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Shaoxian Song¹, Alejandro Lopez-Valdivieso¹, D.J. Hernandez-Campos¹, C. Peng¹, M.G. Monroy-Fernandez¹, I. Razo-Soto¹ - Show less +2 more•Institutions (1)

Universidad Autónoma de San Luis Potosí¹

01 Jan 2006-Water Research

TL;DR: It has been found that the mechanism by which coarse calcite enhanced the coagulation of high-arsenic water might be due to attractive electrical double layer interaction between small arsenic-borne coagulates and calcite particles, which leads to non-existence of a potential energy barrier between the heterogeneous particles.

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251 citations

"A nanofiltration-coagulation integr..." refers background in this paper

...Arsenic ions precipitate with the ferric ions on the coagulants and thus increase the concentration of the coagulates (Song et al., 2006) as described below:...
[...]
...Quite a few studies on such coagulation–precipitation involving salts of iron, aluminum and calcium have been reported in the literature (Camacho et al., 2000; Roberts et al., 2004; Song et al., 2006; Baskan and Pala, 2009, 2010; Sullivan and Tyrer, 2010;Wang et al., 2011; Randall, 2012)....
[...]
...Arsenic ions precipitate with the ferric ions on the coagulants and thus increase the concentration of the coagulates (Song et al., 2006) as described below: Fe3+ + H3AsO4 → FeAsO4 (solid precipitate)....
[...]

Journal Article•DOI•

Arsenic removal by coagulation and filtration: comparison of groundwaters from the United States and Bangladesh

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S.R. Wickramasinghe¹, Binbing Han¹, J. Zimbron, Zhisong Shen, M.N. Karim¹ - Show less +1 more•Institutions (1)

Colorado State University¹

10 Oct 2004-Desalination

TL;DR: The results of the bench-scale experiments conducted indicate that coagulation with ferric ions followed by filtration is effective in reducing arsenic concentration in the water tested.

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224 citations