Researchers* at the Massachusetts Institute of Technology (MIT), USA, have evaluated four new and alternative technologies for arsenic remediation: iron filings, iron oxide coated sand, and two different systems using modified activated alumina metal oxides. These systems were field tested in the USA and in Nepal with source water total arsenic concentrations ranging from 100 ­ 1,000 ug/l. The iron filings media and the iron oxide coated sand gave treated water total arsenic concentrations respectively of < 5 ug/l ­11 ug/l and <10 ­ 100 ug/l respectively. The two modified activated alumina metal oxide systems produced treatment water consistently < 5 ug/l or < 10 ug/l. Several additional new technologies were also reviewed: granular ferric hydroxide, a ligand-based ceramic technology, biological filtration, new resin developments and nanofiltration.

*Murcott, S. ? [et al.]. (2002). New technologies for arsenic contaminated drinking water remediation. Paper presented at Arsenic in New England Conference, 29-31 May 2002. URL: http://www.dartmouth.edu/%7Ecehs/ArsenicConferen... (abstract)
Related web sites - Arsenic Remediation Technologies: Online Informational Database (includes descriptions of 50 specific arsenic remediation options) - http://web.mit.edu/murcott/www/arsenic/database.... ; MIT Nepal Water Project - Arsenic Removal, http://ceeserver3.mit.edu/~Nepal/Arsenic.html

Contact: Susan Murcott, Lecturer, Dept. of Civil & Environmental Engineering, MIT, murcott@mit.edu, http://web.mit.edu/civenv/html/people/faculty/mu...