Light and Electron Microscopic Examinations of Methane-Producing Biofilms from Anaerobic Fixed-Bed Reactors

Methane- Producing Anaerobic Sewer Biofilms

Stratified Microbial Structure and Activity in Sulfideand 1 MethaneProducing Anaerobic Sewer Biofilms 2 3 Jing Sun, Shihu Hu, Keshab Raj Sharma, Bing-Jie Ni, Zhiguo Yuan* 4 5 1 Advanced Water Management Center, The University of Queensland, St. Lucia, 4072, 6 Queensland, Australia; 7 2 CRC for Water Sensitive Cities, PO Box 8000, Clayton, Victoria, 3800, Australia 8 9 *Corresponding author 10 E...

Anaerobic Degradation of Nonionic and Anionic Surfactants in Enrichment Cultures and Fixed-bed Reactors

-Anaerobic biodegradation and inhibitory effects of nonionic and anionic surfactants on methanogenic fermentation were tested in incubation experiments with anoxic sediment samples and sewage sludge. Alkylsulfonates and alkylbenzenesulfonates were not degraded but inhibited methanogenesis from sludge constituents at concentrations 1> 10 mg l-k Sodium dodecylsulfate was at least partly degraded ...

24 Fixed Film Stationary Bed and Fluidized Bed Reactors

Analyzing and Comparing Energy and Exergy of POXR and SMR Reactors for Producing Hydrogen from Methane Gas

The POXR and SMR methods adopted in producing hydrogen from methane gas are simulated and exergy analysis of both the processes are run for comparison. The effective parameters of the feeding materials ratio and the system temperature for maximizing hydrogen production and increasing efficiency are assessed here. Influenced by the changes in these parameters the unit efficiency is increased up ...

Microbial populations associated with fixed- and floating-bed reactors during a two-stage anaerobic process.

Microbial populations associated with methanogenic fixed- or floating-bed bioreactors used for anaerobic digestion of lignocellulosic waste were investigated. Fluorescent in situ hybridization (FISH) was used to characterize microorganisms in samples obtained from different heights in the reactors, which were operated in a semi-continuous manner (feeding and mixing once every 2 days). The FISH ...