Article ID Journal Published Year Pages File Type
7641238 Microchemical Journal 2017 6 Pages PDF
Abstract
In this study, to investigate the evolution of dissolved organic matter (DOM) in starch processing wastewater (SPW) during the treatment of a sedimentation and biological hybrid system, the DOM was sampled at different treatment stage, and characterized by gel permeation chromatography (GPC), fluorescence excitation-emission matrix (EEM) and UV-Vis. The chromatograms demonstrated that the majority of molecules in the influent had a molecular weight (MW) of less than 0.5 kDa, while that of the oxic basin was mainly in the range of 0.5-2 kDa. The MW distribution became narrow along the treatment line. The proteinaceous matters with simple structure were more easily biodegraded during the treatment process. Most protein-like material could be effectively decomposed by the activities of anaerobic and aerobic bacteria. The microbial byproduct-like substances and humic acid-like materials were the main components of DOM in the effluent. The parameters obtained from the analysis were clustered into two groups, which represent the different treatment state of SPW.
Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
Authors
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