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008 021098s1980 th r 0000|0 eng d
035 _a.b10434501
099 9 _aAIT Thesis no. EV-80-2
100 1 _aRamyar, Mir-Masgidi
245 1 0 _aMethane production from human and animal manure
260 _aBangkok :
_bAsian Institute of Technology,
_c1980
300 _avi, 108 p.
490 1 _aThesis ;
_vno. EV-80-2
500 _aA thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1980
520 _aThe purpose of this study was to investigate in the laboratory the optimum mixture of cowdung and nightsoil that would yield maximum gas production. Five laboratory scale digester units were used in the experiment. It was found that the best results were .obtained with the digester whose composition of cowdung:nightsoil = 40:60, i .e., at the organic loading of 2 kg VS/m -d, detention time of 30 days, and dilution ratio of 1:1.5, the gas yield of 0.37 l/g VS-d, average methane content of 72.6% and total and filtrate COD removal of 58 and 78%, respectively, were obtained. Although the digester performance was affected by temperature, the pH value of all digesters slurry were found to be within range of 6.8-7.45 throughout the continuous operation period. The reduction of nitrogen and phosphate was found to be about 25 and 20%, respectively.
650 0 _aMethane
650 0 _aManure gases
700 0 _aChongrak Polprasert,
_eChairperson
700 0 _aSamorn Muttamara,
_eCo-Chairperson
700 1 _aWatanabe, Yoshimasa,
_eExamination Committee
710 2 _aWorld Health Organization,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. EV-80-2
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B21945
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