Essays about: "ammonia inhibition"

Showing result 1 - 5 of 6 essays containing the words ammonia inhibition.

  1. 1. Counteracting Ammonia Inhibition in Anaerobic Digestion using Wood Residues : Evaluating Ammonium Adsorption Capacity of Fibres from Pulp and Paper Mills

    University essay from Linköpings universitet/Tema Miljöförändring; Linköpings universitet/Biogas Research Center

    Author : Marcus Wrangbert; [2021]
    Keywords : Anaerobic digestion; Ammonia inhibition; Fibres; Biogas;

    Abstract : One of the main interests in commercial methane production is to maximize the gas yield, and it is thus appealing to use material with relative high methane potential. However, such material often results in process instability whereas ammonia inhibition is common. READ MORE

  3. 2. Stabilizing biogas processes at high ammonia : effects of acetate pulse-feeding on the microbial population

    University essay from SLU/Department of Molecular Sciences

    Author : Oscar Dolk; [2020]
    Keywords : biogas; anaerobic digestion; ammonia inhibition; acetate enrichment;

    Abstract : This study investigated the problem of ammonia inhibition in biogas reactors, commonly occurring when protein rich substrates are used in anaerobic digestion processes. Ammonia inhibition is one of the foremost causes of failure in anaerobic digestion, leading to process instability, with symptoms commonly expressed as; reduction in biogas produced, decreased methane content in the gas and accumulation of volatile fatty acids. READ MORE

  4. 3. Assay of nitrification potentials in sewage sludge : development and evaluation of method, and nitrification potentials in sewage sludge before and after application to soil

    University essay from SLU/Dept. of Microbiology

    Author : Caroline Jöngren; [2016]
    Keywords : Sewage sludge; nitrification potentials; PAO; sanitations treatment; ammonium; storage treatments; nitrous oxide; Nitobacteriacea; Nitrosomona;

    Abstract : Sewage sludge (SS) contains valuable plant nutrients applicable to soil as fertilizer. Application to arable land is though controversial as SS can contain contains such as human pathogens, heavy metals and xenobiotics. READ MORE

  5. 4. The effects of trace elements on the microbial communities of thermophilic biogas production

    University essay from SLU/Dept. of Microbiology

    Author : Robin Hagblom; [2016]
    Keywords : biogas; thermophilic; trace elements; ammonia; SAO; fhs;

    Abstract : The increasing need for alternatives to fossil fuels and traditional waste management systems can be simultaneously addressed by the production of biogas using organic waste as input material. The biogas produced can be used directly for energy production or upgraded to increase methane purity for use in the engines of motor vehicles. READ MORE

  6. 5. Investigations on the nitrogen inhibition during an anaerobic co-digestion process

    University essay from Högskolan i Borås/Institutionen Ingenjörshögskolan

    Author : Mitta Mohana Ravikumar Gopinath; Kiran Kumar Gopalam; [2011]
    Keywords : anaerobic co-digestion; bts buffer tank substrate ; batch and continuous operations; thermophilic; ammonia;

    Abstract : Nitrogen Inhibition during an anaerobic co-digestion process was studied in this work.The substrate and inoculum used were obtained from a thermophilic biogas plant Sobacken,situated in Borås, Sweden. The batch experiments have been carried out in triplicate reactorswith different concentrations of ammonia ranging from 2400mg/l to 3400mg/l. READ MORE