Treatment of arsenic in water by nanocrystalline titanium dioxide
A nanocrystalline TiO2 was developed for treatment of inorganic and organic arsenic in water.Experimental results indicated that the adsorption capacity of TiO2 for arsenateAs(V)increased dramatically when crystalline size of TiO2 decreased from about 134 tO 7 nm.The TiO2 was also an effective photocatalyst for demethylation of monomethylarsonic acid(MMA)and dimethylarsinic acid (DMA).Hydroxyl radicals(HO·)was the primary reactive oxygen species for the photodegradation of MMA and DMA.The methyl groups in MMA and DMA were transformed into organic carbon.Including formic acid and possibly methanol,also through photochemical reactions.Some experimental results and findings are briefly summarized herein.
nanocrystalline TiO2 arsenic adsorption
Xiaoguang MENG Lee LIPPINCOTT Changyong JINg Zhonghou Xu
Center for Environmental Systems,Stevens Institute of Technology,Hoboken,NJ 07804,USA New Jersey Department of Environmental Protection,P.0.Box 409,Trenton,NJ 08625,USA Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China
国际会议
西安
英文
329-332
2008-05-15（万方平台首次上网日期，不代表论文的发表时间）