Removal of dissolved organic carbon by coagulation and adsorption from polluted source water in southern Taiwan

Yun Hwei Shen, Tai Hua Chaung

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The removal of dissolved organic carbon from a polluted water source in southern Taiwan by coagulation and powder activated carbon (PAC) adsorption was investigated in light of increasing concern for the production of potentially toxic chlorinated organic products. The results of this study clearly indicated that the effects of coagulation and PAC adsorption on the removal of non-purgeable dissolved organic carbon (NPDOC) from Tungkang River water were complementary. Coagulation by aluminum sulfate (alum) or polydiallyldimethylammonium chloride (PDDAC) alone removed only about 40% NPDOC; this type of NPDOC being preferentially large organic molecules with negatively charged functional groups. On the other hand, at a 20- to 30-min contact time, PAC removed about 60% NPDOC, mostly low molecular weight and uncharged NPDOC. A total 90% removal of NPDOC from this polluted source water was achieved by a combined coagulation and PAC adsorption process.

Original languageEnglish
Pages (from-to)497-503
Number of pages7
JournalEnvironment international
Volume24
Issue number4
DOIs
Publication statusPublished - 1998 May

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)

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