kjeldahl digestion Articles

  • Eliminate TKN Digestions and Obtain Better Nutrient Data

    Nitrogen and Phosphorus are the principal elements referred to when discussing nutrient pollution. Current, and past, efforts to control these pollutants have been generally inadequate. Efforts to date have been predominantly “regulation at the pipe” and have not addressed the non-point sources that are the root cause of elevated concentrations of nutrients in ground and surface ...

  • TKN determination in water and waste water

    Determination of TKN (Total Kjeldahl Nitrogen) in Water and Waste Water according to the Kjeldahl Method. The determination of TKN in water and waste water is a routine procedure for quality assurance. A simple and fast procedure for the TKN determination in water, according to ISO 5663, AOAC 973.48 and EPA 351.3, is introduced below. The sample is digested with sulfuric acid and the ...


    By BÜCHI Labortechnik AG

  • Preliminary evaluation of biosolids characteristics for anaerobic membrane reactors treating municipal wastewaters

    This study assessed the characteristics of biosolids of a pilot-scale anaerobic membrane bioreactor (AnMBR) treating municipal wastewater. The production of total solids (TS) and volatile solids (VS) was comparable to that reported for the extended aeration system at solids residence time (SRT) longer than 40 days. The yields of TS and VS were reduced as SRT increased from 40 to 100 days and ...


    By IWA Publishing

  • Nitrogen analysis of pharmaceutical excipients

    Customer: Butterworth Laboratories, United Kingdom Wilh nearly 40 years' experience, Butterworth Laboratories remains an independent UK con¬tract analytical service providing Method Development, Method Validation, Stability Testing and OC Testing to the pharmaceutical, medical device and chemical industries. They work in part¬nership with clients who not only recognize expertise ...


    By BÜCHI Labortechnik AG

  • Determination of Ammonia and Nitrogen

    Customer: CAE Grand Ouest, France CAE is a laboratory of the Veolia Group located in Western France. The laboratory is specializing in environmental analysis, especially in water and soil analysis. Application: Determination of Ammonia and TKN in waste water and soil Total Kjeldahl Nitrogen (TKN) and Ammonia are common parameters for the evaluation of ...


    By BÜCHI Labortechnik AG

  • Removal of viruses and indicators by anaerobic membrane bioreactor treating animal waste

    Appropriate treatment of agricultural waste is necessary for the protection of public health in rural areas because land-applied animal manure may transmit zoonotic disease. In this study, we evaluated the potential of using a pilot anaerobic membrane bioreactor (AnMBR) to treat agricultural waste. The AnMBR system, following a conventional complete mix anaerobic digester (CMAD), achieved high ...

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