Biodegradation of tetramethylammonium hydroxide (TMAH) in completely autotrophic nitrogen removal over nitrite (CANON) process

Bioresource Technology
Shen-Yi ChenJih-Gaw Lin

Abstract

This study conducted a completely autotrophic nitrogen removal over nitrite (CANON) process in a continuous anoxic upflow bioreactor to treat synthetic wastewater with TMAH (tetramethylammonium hydroxide) ranging from 200 to 1000mg/L. The intermediates were analyzed for understanding the metabolic pathway of TMAH biodegradation in CANON process. In addition, (15)N-labeled TMAH was used as the substrate in a batch anoxic bioreactor to confirm that TMAH was converted to nitrogen gas in CANON process. The results indicated that TMAH was almost completely biodegraded in CANON system at different influent TMAH concentrations of 200, 500, and 1000mg/L. The average removal efficiencies of total nitrogen were higher than 90% during the experiments. Trimethylamine (TMA) and methylamine (MA) were found to be the main biodegradation intermediates of TMAH in CANON process. The production of nitrogen gas with (15)N-labeled during the batch anaerobic bioreactor indicated that CANON process successfully converted TMAH into nitrogen gas.

References

Jul 1, 1990·International Journal of Systematic Bacteriology·M OharaH Kuraishi
Feb 17, 1999·FEMS Microbiology Reviews·M S JettenJ G Kuenen
Oct 31, 2000·Applied and Environmental Microbiology·M T SuzukiE F DeLong
Oct 4, 2003·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·T K ChenJ N Chen
Sep 18, 2007·FEMS Microbiology Ecology·Charles W Knapp, David W Graham
Oct 1, 2008·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Y J WuS S Cheng

❮ Previous
Next ❯

Citations

May 19, 2018·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Tsuyoshi DanshitaKazuaki Syutsubo
Jun 25, 2019·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Kampachiro UrasakiKazuaki Syutsubo

❮ Previous
Next ❯

Related Concepts

Related Feeds

Bioremediation (ASM)

Bioremediation is the treatment and removal of harmful pollutants or contaminants through the use of microorganisms. Discover the latest research here.