Understanding soluble microbial products (SMP) as a component of effluent organic matter (EfOM)

被引:286
|
作者
Jarusutthirak, Chalor [1 ]
Amy, Gary
机构
[1] King Mongkuts Inst Technol, Fac Sci, Bangkok 10520, Thailand
[2] UNESCO, IHE, Inst Water Educ, Delft, Netherlands
关键词
soluble microbial products (SMP); effluent organic matter (EfOM); biomass-associated products (BAP); utilization-associated products (UAP); sequencing batch reactor (SBR);
D O I
10.1016/j.watres.2007.03.005
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Formation of soluble microbial products (SMP) during biological degradation of organic compounds in a sequencing batch reactor (SBR) was investigated using high performance liquid chromatography-size exclusion chromatography (HPSEC) as well as other organic matter characterization tools. Results showed that carbon compounds in a glucose feed solution were totally transformed to other organic products classified biomass-associated products (BAP). The SMP-BAP contained in the SBR effluent consisted mainly of high-molecular weight (MW) fractions of organic matter, possibly originating from cell lysis. These compounds exhibited a low specific ultraviolet absorbance (SUVA) and a hydrophilic character. In addition, the characteristics of bulk effluent organic matters (EfOM) samples from wastewater treatment facilities were studied. It was observed that EfOM consisted of humic-like and hydrophobic (HPO) compounds, derived from the corresponding drinking water source, in addition to SMP-BAP. A superimposition of SEC chromatograms of the SMP-BAP and humic-like compounds represented a fingerprint of EfOM. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2787 / 2793
页数:7
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