Evaluation of a novel hybrid inorganic/organic polymer type material in the Arsenic removal process from drinking water

Iesan, Carmen; Capat, Constantin; Ruta, Florin; Udrea, Ion

doi:10.1016/j.watres.2008.06.011

Cited by 55 publications

(40 citation statements)

References 15 publications

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“…However, it is still noteworthy that, like other inorganic sorbents such as ZrP and hydrated ferric oxides [38,39], ZrPS cannot be directly employed for heavy metals removal in fixed-bed and any other flow-through systems due to the excessive pressure drop resulting from its fine particle sizes. However, these fine particles can be impregnated onto porous supporting materials, namely activated carbon [40], polymeric adsorbents [21,41], and alginate [42], to fabricate hybrid sorbents for potential application.…”

Section: Regeneration and Environmental Implicationsmentioning

confidence: 99%

Selective removal of Pb(II), Cd(II), and Zn(II) ions from waters by an inorganic exchanger Zr(HPO3S)2

Zhang

Pan

Zhang

et al. 2009

Journal of Hazardous Materials

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Section: Regeneration and Environmental Implicationsmentioning

confidence: 99%

Selective removal of Pb(II), Cd(II), and Zn(II) ions from waters by an inorganic exchanger Zr(HPO3S)2

Zhang

Pan

Zhang

et al. 2009

Journal of Hazardous Materials

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“…Conventional treatment plants may employ several methods for removing arsenic from water. Commonly used processes include oxidation and sedimentation [7], coagulation and filtration [8], lime treatment, adsorption onto media [9][10][11][12], ion exchange [13], and membrane filtration. In the most affected regions large conventional treatment plants may not be appropriate.…”

Section: Introductionmentioning

confidence: 99%

Removal of arsenite by simultaneous electro-oxidation and electro-coagulation process

Zhao

Zhang

Liu

et al. 2010

Journal of Hazardous Materials

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a b s t r a c tAn electrochemical reactor was built and used to remove arsenite from water. In this reactor, arsenite can be oxidized into arsenate, which was removed by electro-coagulation process simultaneously. The reactor mainly included dimension stable anode (DSA) and iron plate electrode. Oxidation of arsenite will occur at the DSA electrode in the electrochemical process. Meantime, the iron ions can be generated by the electro-induced process and iron oxides will form. Thus, the arsenic was removed by coagulation process. Influencing factors on the removal of arsenite were investigated. It is found that Ca 2+ and Mg 2+ ions promoted the removal of arsenite. However, Cl − , CO 3 2− , SiO 3 2− , and PO 4 3− ions inhibited the arsenic removal. And, it is observed that the inhibition effect was the largest in the presence of PO 4 3− . Furthermore, it is observed that the removal efficiency of arsenate is the largest in the pH value of 8. Increase or decrease of pH value did not benefit to the arsenite removal. Fourier transform infrared spectra were used to analyze the floc particles, it is suggested that the removal mechanism of As(III) in this system seems to be oxidative of As(III) to As(V) and to be removed by adsorption/complexation with metal hydroxides generated in the process.

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“…There are many different forms of arsenic in nature, but they are generally divided into organic and inorganic arsenic species. Organic forms are arseno‐sugar, monomethyl and dimethyl arsenic acids; arsenate (As 5+ ), phenylarsine oxide (PAO) in surface waters and arsenite (As 3+ ) in underground waters are shown as examples of inorganic arsenic . Mining, mineral processing, volcanic movements, forest fires, the erosion of rocks, industrial and agricultural pollution, and the use of pesticides increase arsenic contamination.…”

Section: Introductionmentioning

confidence: 99%

Simple, Rapid and Sensitive Detection of Phenylarsine Oxide in Drinking Water Using Quartz Crystal Microbalance: A Novel Surface Functionalization Technique

2020

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A simple, inexpensive, rapid and label‐free detection of phenylarsine oxide (PAO) in the field is a significant and unmet need because of its fatally acute and chronic effects on human health. A chemically easy and applicable surface modification procedure can fill this deficiency. In order to determine the cheaper, simpler and rapid surface functionalization technique, gold surface of quartz crystal microbalance (QCM) sensor was modified with ethanol‐dependent (3‐mercaptopropyl)trimethoxysilane (MPS) coating at pH=4.5 first, and then seconder ethanol‐dependent linker layers, which contain (3‐mercaptopropyl)trimethoxysilane (MPS), dimercaprol (BAL) or 2‐mercaptoethanol (ME), were tested at pH=9.0, respectively. QCM measurements were performed to analyze the stability of each layer in deionized water (DIW) and drinking water for both negative control and arsenic detection performance. Among those examined procedures, the procedure with acidic MPS + basic ME resulted in the best stability in aqueous mediums with a frequency change nearly zero and sensitivity with a frequency shift of 180 (±22) Hz for a concentration of 100 ng/mL PAO in DIW. By using the optimum surface functionalization method, the minimum PAO with a concentration of 1 ng/mL in drinking water was measured as a frequency of 33 (±9) Hz. Besides, this surface modification technique can be applied to the more readily available and cheaper sensor platforms, such as impedimetric electrochemical sensors.

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Evaluation of a novel hybrid inorganic/organic polymer type material in the Arsenic removal process from drinking water

Cited by 55 publications

References 15 publications

Selective removal of Pb(II), Cd(II), and Zn(II) ions from waters by an inorganic exchanger Zr(HPO3S)2

Selective removal of Pb(II), Cd(II), and Zn(II) ions from waters by an inorganic exchanger Zr(HPO3S)2

Removal of arsenite by simultaneous electro-oxidation and electro-coagulation process

Simple, Rapid and Sensitive Detection of Phenylarsine Oxide in Drinking Water Using Quartz Crystal Microbalance: A Novel Surface Functionalization Technique

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