Effect of Mecoprop (RS)-MCPP on the biological treatment of synthetic wastewater in an anaerobic membrane bioreactor

• Published in: Bioresource technology Vol. 133; pp. 158 - 165
• Main Authors: Yuzir, Ali, Abdullah, Norhayati, Chelliapan, Shreeshivadasan, Sallis, Paul
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.04.2013; Elsevier
• Subjects: 2-Methyl-4-chlorophenoxyacetic Acid - analogs & derivatives; 2-Methyl-4-chlorophenoxyacetic Acid - isolation & purification; Anaerobic membrane bioreactor; Anaerobic process; Anaerobiosis; Applied sciences; Archaea - metabolism; Bacteria - metabolism; Biodegradation, Environmental; Biological and medical sciences; Biological Oxygen Demand Analysis; Bioreactors; Bioreactors - microbiology; Biotechnology; Exact sciences and technology; Fatty Acids, Volatile - analysis; Fundamental and applied biological sciences. Psychology; Herbicide; Mecoprop (RS)-MCPP; Membranes, Artificial; Methane - biosynthesis; Methods. Procedures. Technologies; Microbial engineering. Fermentation and microbial culture technology; Pollution; Solubility; Soluble COD; Various methods and equipments; Waste Water - chemistry; Wastewaters; Water Purification - instrumentation; Water Purification - methods; Water treatment and pollution; Anaerobic process; Mecoprop (RS)-MCPP; Anaerobic membrane bioreactor; Soluble COD; Herbicide; Pesticides; Solubility; Systemic; Waste water; Membrane reactor; Bioreactor; Anaerobe; Anaerobic fermentation; Phytohormone; Biological treatment
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2013.01.086

► More than 90% COD removal was observed at all times after start-up. ► Methane yield showed to be mainly unaffected by Mecoprop concentrations. ► Mecoprop specific utilization rate increased at higher Mecoprop concentrations. The effects of Mecoprop (RS)-MCPP were investigated in an anaerobic membrane bioreactor (AnMBr) fed with synthetic wastewater containing stepwise increases in Mecoprop concentration, 5–200mgL−1 over 240days. Effects were observed in terms of soluble chemical oxygen demand (COD) removal efficiency, volatile fatty acid (VFA) production, and methane yield. Soluble COD removal efficiency was stable at Mecoprop concentrations below 200 (±3)mgL−1, with an average of 98 (±0.7)% removal. However, at 200 (±3)mgL−1 Mecoprop, the COD removal efficiency decreased gradually to 94 (±1.5)%. At 5mgL−1 Mecoprop, acetic and propionic acid concentrations increased by 60% and 160%, respectively. In contrast, when Mecoprop was increased to 200 (±3)mgL−1, the formation and degradation of acetate was unaffected by the higher Mecoprop concentration, acetate remaining below 35mgL−1. Increases in the Mecoprop specific utilization rate were observed as Mecoprop was increased stepwise between 5 and 200mgL−1.