CTAB modified nanoporous carbon for the adsorption of chromate ions from industrial wastewater
作者： Mansoor Anbia , Seyyed Ershad Moradi
关键词: Carbon 、 Chemistry 、 Hexavalent chromium 、 Mesoporous material 、 Inorganic chemistry 、 Chromium 、 Adsorption 、 Aqueous solution 、 Chromate conversion coating 、 Ammonium bromide
摘要: In the present study, cetyltrimethyl ammonium bromide (CTAB) was coated on surface of ordered mesoporous carbon (OMC) and used as an adsorbent to remove hexavalent chromium (Cr(VI)) from aqueous solution. The structural order textural properties this studied by XRD nitrogen adsorption. amount CTAB confirmed TGA analyses. Adsorption experiments were conducted in batch mode evaluate effect variables contact time, solution pH, dose adsorbents (CTAB-OMC OMC) temperature, Maximum adsorption observed at pH 4. mechanism found be electrostatic attraction acid chromate ion towards protonated CTAB-OMC. equilibrium achieved within 3–4 h for initial concentrations Cr(VI) 10-100 mg/L. monolayer capacity CTAB-OMC 1.4 mmol/g 3 temperature 313 K. isotherms...
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