Essays about: "methanogenesis"

Showing result 11 - 15 of 18 essays containing the word methanogenesis.

  1. 11. Cleaning process of abattoir wastewater with focus on bacterial pathogens

    University essay from SLU/Dept. of Biomedical Sciences and Veterinary Public Health

    Author : Johan Thorell; [2014]
    Keywords : Cleaning process; Abattoir Wastewater ; Bacterial pathogens;

    Abstract : This study was conducted at the City Abattoir in Kampala, Uganda to evaluate the cleaning process, with focus on bacterial pathogens, in a pilot scale integrated bioprocess. This consisted of four steps: anaerobic sequencing batch reactors; aerobic/anoxic sequencing batch reactors; a high performance temperature controlled methanogenesis digester and a constructed wetland. READ MORE

  3. 12. Observation of methanogenesis and potential iron-dependent anaerobic oxidation of methane in old lake sediments, a study of two boreal forest lakes.

    University essay from Institutionen för biologisk grundutbildning

    Author : Elias Broman; [2013]
    Keywords : Limnology; Lake; Sediment; Methane; Anaerobic oxidation;

    Abstract : Organic and inorganic carbon can enter inland waters in different ways, and often a considerable amount of this carbon is coming from terrestrial input. Once this terrestrial carbon enters a lake, the carbon may be degraded, mineralized or eventually buried in the sediment. READ MORE

  4. 13. Evaluation of magnetic biomass carriers for biogas production

    University essay from Tema vatten i natur och samhälle; Filosofiska fakulteten

    Author : Jan Moestedt Hellman; [2013]
    Keywords : Biogas; magnetism; biomass carrier; syntrophy; mixed sludge;

    Abstract : This thesis evaluates a novel technique to increase the active biomass inside continuously stirred tank biogas reactors with possible benefits of shorter retention times, higher degree of degradation, higher methane yield and tolerance of higher organic loading rates. The technique includes addition of magnetic biomass carriers to the process which, after adhesion of active microorganisms, can be magnetically separated at reactor outflow and reintroduced to the process. READ MORE

  5. 14. Management of hydrogen sulfide in anaerobic digestion of enzyme pretreated marine macro-algae

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Salar Haghighatafshar; [2012]
    Keywords : Technology and Engineering;

    Abstract : Enzymatic pretreatment of algae – by means of cellulose degrading enzyme – was evaluated through lab-scale and pilot-scale experiments. The degradation efficiency of the enzyme depended on the initial physical quality of the algae. READ MORE

  6. 15. Effect of botanically diverse pastures on the milk fatty acid profiles in New Zealand dairy cows

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Gunilla Ström; [2012]
    Keywords : Dairy cow; Milk fatty acids; CLA; Diverse pastures; Secondary plant metabolites;

    Abstract : Botanically diverse pastures are commonly used in New Zealand to reduce the ruminant environmental impact by reducing the methane production from the rumen digestion. In order to evaluate the effects diverse pasture species have on the milk fatty acid profile seventy-two lactating Friesian-Jersey crossbred dairy cows were used in a randomised block design with two replicates of six treatments. READ MORE