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Updated: Jun 8, 2026

Optimization of Processing Technology for Tiebangchui with Zanba Based on CRITIC Combined with Box-Behnken Response Surface Method
Published on: May 12, 2023
Evaluating the influence of process parameters on soluble microbial products formation using response surface
Juan Xu1, Guo-Ping Sheng, Hong-Wei Luo
1Department of Chemistry, University of Science and Technology of China, Hefei, China.
Abstract:
Soluble microbial products (SMPs) present a major part of residual chemical oxygen demand (COD) in the effluents from biological wastewater treatment systems, and the SMP formation is greatly influenced by a variety of process parameters. In this study, response surface methodology (RSM) coupled with grey relational analysis (GRA) method was used to evaluate the effects of substrate concentration, temperature, NH(4)(+)-N concentration and aeration rate on the SMP production in batch activated sludge reactors. Carbohydrates were found to be the major component of SMP, and the influential priorities of these factors were: temperature>substrate concentration > aeration rate > NH(4)(+)-N concentration. On the basis of the RSM results, the interactive effects of these factors on the SMP formation were evaluated, and the optimal operating conditions for a minimum SMP production in such a batch activated sludge system also were identified. These results provide useful information about how to control the SMP formation of activated sludge and ensure the bioreactor high-quality effluent.
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Response Surface Methodology
The process of RSM involves several key steps:
Methods of Medium Optimization
Upstream Processing
Scale-Up Processes
Bioreactor Controls-III
Bioreactor Controls-I