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Perchlorate removal using granular activated carbon supported iron compounds: Synthesis, characterization and reactivity 被引量:8
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作者 Jianhong Xu Naiyun Gao +2 位作者 Yulin Tang Yang Deng Minhao Sui 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2010年第11期1807-1813,共7页
Synthesis and use of the iron compounds supported on granular activated carbon (ICs/GAC) have shown significant environmental implications for perchlorate (ClO4^- ) removal. ICs/GAC was synthesized via hydrolyzing... Synthesis and use of the iron compounds supported on granular activated carbon (ICs/GAC) have shown significant environmental implications for perchlorate (ClO4^- ) removal. ICs/GAC was synthesized via hydrolyzing FeSO 4 ·7H2O on GAC, reduced by NaBH 4 solution in polyethylene glycol 6000 and ethanol solution, dried in vacuum condition and exposed to air. Synthesized ICs/GAC was characterized using transmission electron micrograph (TEM), Brunauer-Emmett-Teller, X-ray photoelectron spectroscopy (XPS). ICs/GAC was determined to be containing a large amount of FeOHSO 4 , Fe2O3 and a small amount of zero-valent iron (ZVI) nanoparticles according to TEM and XPS measurements. Batch static kinetic tests showed that 97% of ClO4^- was removed within 10 hr at 90°C and 86% of ClO4^- was removed within 12 hr at 25°C, at ICs/GAC dosage of 20 g/L. The experimental results also showed that FeOHSO 4 and Fe 2 O 3 nanoparticles have the function of perchlorate adsorption and play important roles in ClO4^- removal. The activation energy (E a ) was determined to be 9.56 kJ/mol. 展开更多
关键词 perchlorate removal ICs /GAC activation energy SYNTHESIS
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