Effect of blast furnace dust on the degradation of chlorinated organic and endocrine disrupting compounds

Abstract

This research was to study the effect of blast furnace dust (BFD) as a new reactive material for the degradation of chlorinated organic (COCs) and endocrine disrupting compounds (EDCs). When 100g/L of BFD was used, the effective degradation of tetrachloroethylene (PCE) was obtained. The cis-DCE (0.93mM) was dechlorinated to below detection limit within 120h of reaction. Among various COCs and EDCs, they were degraded at least 90% except for sodium perchlorate. The metabolites of 4-tert-octylphenol (4-t-OP) were identified as 2,4,4-trimethyl-2-pentanol, hydroquinone and 2-tert-octylhydroquinone, respectively. The effective degradation of PCE and 4-t-OP was occurred at range of pH 4–7. A total of 100% of cis-DCE and 86% of 4-t-OP were degraded in fed-batch experiments after 264h. A solution of highly enriched bacteria completely insolubilized 2.14mM of Zn eluted from BFD within 168h of culture. These researches will provide more information related to the application for other contaminated water and wastewater treatments.