Correction Method of Anaerobic Organic Biodegradability by Batch Anaerobic Digestion
2012
Kim, S.H., Biogas Research Center, Hankyong National University, Anseong, Republic of Korea | Oh, S.Y., Biogas Research Center, Hankyong National University, Anseong, Republic of Korea | Kim, C.H., Biogas Research Center, Hankyong National University, Anseong, Republic of Korea | Yoon, Y.M., Biogas Research Center, Hankyong National University, Anseong, Republic of Korea
This research was carried out to develop the correction method of VDI4630 method improving accuracy, and investigated the effects of carbonate ion (CO₃²-) and reactant water (H₂O) on anaerobic organic biodegradability in VDI4630 method. Pig blood, pig intestine residue, pig digestive tract content, and cattle rumen content were experimented as waste biomasses. Chemical formulas of pig blood, pig intestine residue, pig digestive tract content, and cattle rumen content were C∧3.78 H∧8.39 O∧1.46 N₁S∧0.01, C∧9.69 H∧15.42 O∧2.85 N₁S∧0.03, C∧25.17 H∧43.32 O∧15.04 N₁, C∧27.23 H∧42.38 O∧15.93 N₁S∧0.11, respectively. And amount of reactant moisture for the anaerobic degradation of organic materials were 0.336, 0.485, 0.227, 0.266 mol, respectively. In pig blood, pig intestine residue, pig digestive tract content, and cattle rumen content, anaerobic organic biodegradability presented as B∧u/B∧th were 82.3, 81.5, 70.8, and 66.1%, and anaerobic organic biodegradability (AB) by VDI4630 method were 72.2, 87.8, 74.2, 62.0%, and that were significantly different with anaerobic organic biodegradability presented as B∧u/B∧th. The effects of carbonate ion and reactant water on anaerobic organic biodegradability were not significant, but Accuracy of anaerobic organic degradability was expected to able to be improved by the correction method of VDI4630 considering the carbonate ion at digestate and the reactant water quantified.
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