標題: Interactions between alum and organics in coagulation
作者: Huang, CP
Shiu, HL
交大名義發表
環境工程研究所
National Chiao Tung University
Institute of Environmental Engineering
關鍵字: alum;coagulation;humic acid;organic contaminants;salicylic acid;water treatment
公開日期: 1-八月-1996
摘要: The coagulation-sedimentation process, i.e. a major pretreatment for filtration, has the potential to remove organic contaminants. However, interactions between coagulants and organics in the absence of suspended solids have only received limited attention. This study aims to model alum-organics' interactions corresponding to the behavior of organics during coagulation. Two typical organic materials, humic acid and salicylic acid, are investigated. Experimental results indicate that the removal of organics by coagulation is directly related to the molecular weight. The interaction of alum with humic acid involves complexation, charge neutralization, precipitation and adsorption. The coagulation of salicylic acid with alum arises from adsorption and entrapment. Results of this study confirm a stoichiometric relationship between the initial concentrations of humic acid and optimal alum dosages.
URI: http://dx.doi.org/10.1016/0927-7757(96)03543-1
http://hdl.handle.net/11536/1145
ISSN: 0927-7757
DOI: 10.1016/0927-7757(96)03543-1
期刊: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume: 113
Issue: 1-2
起始頁: 155
結束頁: 163
顯示於類別:期刊論文


文件中的檔案:

  1. A1996VB31900016.pdf