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Updated: Jun 19, 2026

Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor
Published on: October 15, 2015
Response surface optimization of dissolved oxygen and nitrogen sources for the biodegradation of MTBE and BTEX
Chi-Wen Lin1, Chia-Hsien Yen, Hung-Chun Lin
1Department of Safety Health and Environmental Engineering, National Yunlin University of Science and Technology, 123 University Rd. Sec. 3, Douliou, Yunlin 64002, Taiwan, ROC. Linwen@yuntech.edu.tw
Abstract:
Response surface methodology (RSM) using central composite design was applied to obtain the optimal dissolved oxygen (DO) and nitrogen (N) concentrations for biodegrading MTBE (Methyl tert-butyl ether) and BTEX (benzene, ethylbenzene, toluene, p-xylene). Moreover, the effects of DO, N, and their interaction on the degradation process were evaluated. It was found that N, N(2), DO and DO(2) have significant effects on the efficiency of MTBE and BTEX removal. The removal efficiency when using biostimulation with bioaugmentation (BwB) is higher than with other processes, being greater than 82% at concentrations of 12 and 48 mg l(-1) for DO and N, respectively. However, it was also found that the interaction term of DO x N has no significant effect on the degradation processes.
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