| A laboratory procedure is described for measuring methane potentials of source-separated bio-organic municipal waste (BMW). Triplicate reactors with about 20 grams fresh material were incubated at 37℃ with 300 mL inoculum from Shenyang wastewater treatment plant and the methane production was followed over a 50 d period by regular measurement of methane on a gas chromatograph. At 37℃,the methane production efficiency of source-separated BMW and individual waste materials was: starch＞BMW＞protein＞food oil＞fat＞paper. For the source-separated BMW,starch,protein,food oil,fat and paper,the methane potential (CH4/VS) of 218.15,209.11,194.20,238.86,257.82 and 131.41 mL/g were found,and ultimate biodegradability of 6 difference materials were 67.73%，72.88%，65.84%，78.38%，74.11% and 47.98%,respectively. |
