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Removing Humic Substances by Chemical Treatment and Adsorption
Author(s) -
Weber Walter J.,
Jodellah Abdullah M.
Publication year - 1985
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1985.tb05522.x
Subject(s) - alum , adsorption , chemistry , lime , coagulation , humic acid , activated carbon , environmental chemistry , water treatment , total organic carbon , pulp and paper industry , organic chemistry , environmental engineering , environmental science , materials science , fertilizer , metallurgy , engineering , psychology , psychiatry
Alum coagulation and lime softening exhibited variable effectiveness for removing the total organic carbon (TOC) associated with humic substances in water supplies. Pretreatment with alum or lime also affected the subsequent adsorption of TOC by granular activated carbon, with alum coagulation generally improving overall adsorbability. The effectiveness of pretreatment for removing TOC and for altering the adsorption characteristics of residual humics appears to depend on the source and type of the humic material.