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Porous hybrid materials in the remediation of water contaminated with As(III) and As(V)
- Source :
- Chemical Engineering Journal. 270:496-507
- Publication Year :
- 2015
- Publisher :
- Elsevier BV, 2015.
-
Abstract
- The aim of this study is to synthesize novel hybrid porous materials using locally available clay and commercial bentonite and to assess their suitability in the attenuation of arsenic from ground water. Therefore, the clay samples are modified with hexadecylammonium bromide (HDTMA) or pillared with aluminium and then modified with HDTMA. The hybrid materials are characterized by the FT-IR, XRD and SEM analytical methods. Moreover, the BET (Brunauer–Emmett–Teller) specific surface area along with the pore diameter was obtained for these solids. Hybrid materials are then assessed in an effective and efficient remediation of aquatic environment contaminated with arsenic. Various physico-chemical parametric studies enable to deduce plausible mechanism involved at solid/solution interface. The sorptive pH (pH 2.0–10.0), concentrations (1.0–20.0 mg/L) and background electrolyte concentrations (0.001–0.1 mg L −1 NaNO 3 ) dependence sorption of As(III) and As(V) is studied by these solids. The sorption of As(III) or As(V) by these hybrid materials are further illustrated with the FT-IR analysis conducted for the arsenic loaded solids. Further, the simultaneous removal of phenol and arsenic is assessed and results show that the hybrid materials are useful in simultaneous remediation of water contaminated with phenol and, at least, As(V). The removal of arsenic is assessed separately in presence of several cations (Cd(II), Cu(II) and Mn(II)) and anions (glycine, iminodiacetic acid, ethylene diamine tetra acetic acid disodium salt, oxalic acid, phosphate and sulfate).
- Subjects :
- Chemistry
Environmental remediation
Iminodiacetic acid
General Chemical Engineering
Oxalic acid
Inorganic chemistry
chemistry.chemical_element
Sorption
General Chemistry
Industrial and Manufacturing Engineering
chemistry.chemical_compound
Specific surface area
Bentonite
Environmental Chemistry
Hybrid material
Arsenic
Subjects
Details
- ISSN :
- 13858947
- Volume :
- 270
- Database :
- OpenAIRE
- Journal :
- Chemical Engineering Journal
- Accession number :
- edsair.doi...........9169a5abc4bedfebe0bf31730fdf9135