Trace Element Concentrations and Biological Activity in Biogas Digesters
A research project under the leadership of Fraunhofer Institute UMSICHT at Oberhausen (Germany) in cooperation with University of Applied Science at G(o)ttingen (Germany) and University of Rostock (Germany) aims to the development and implementation of an easy to use test method to quantify the biological activity in biogas digesters.In the currently running second project phase the test method is applied to find correlations between bioactivity and micronutrient concentrations.Screening tests at nearly 40 biogas plants in Germany were carried out.The developed activity test as well as comprehensive analyses of the digester samples (macronutrients and trace elements) was performed.Correlations between measured bioactivity and process parameters,especially NH4-N,were observed.The measured concentrations of trace elements varied in a wide range and a weak correlation between measured bioactivity and trace element concentration was found for single trace dements.For some samples,extremely low concentrations of single trace elements were suspected to cause low bioactivity.Bioactivity tests with adding single trace elements were performed to investigate the effect of such additives on biodegradation performance.Single dosing of e.g.Nickel and Manganese to the digester sample could improve gas yield during the methane-forming phase by approx 6%.
biogas process stability test methods
Nils ENGLER Ute MERRETTIG-BRUNS Adam FEHER Thomas FRITZ Michael NELLES
Department of Waste Management and Material Flow, Rostock University, 18059 Rostock Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT Oberhausen HAWK Fachhochschule G(o)ttingen, Faculty of Resource Management G(o)ttingen Schaumann Biotic Consult GmbH, Pinneberg, Germany
国际会议
合肥
英文
182-187
2012-05-24（万方平台首次上网日期，不代表论文的发表时间）