分離微生物を用いた生ゴミの効率的有機酸発酵

概要

論文の詳細を見る
Paenibacillus sp., isolated from sediment in the southern part of Lake Biwa, Shiga, Japan, was used for the acid fermentation of garbage. The fermentation characteristics of Paenibacillus sp. were discussed by comparing with those of themophilic bacteria and mesophilic bacteria and as a result high ability of VFAs fermentation by Paenibacillus sp. was exhibited. The suitable pH for Paenibacillus sp. was in the range from 5 to 5.5 for both acid fermentation and growth. In this pH range, the value of carbohydrate degradation rate constant was 5.7 (h·gATP)-1, and the rate of VFAs production per carbohydrate unit was as high as approximately 0.9mg C-VFAs·(mg C-glucose-base)-1. The degradation of proteins to NH4+-N was not observed. Soluble carbohydrates at a concentration of 39,000mg glucose·l-1 in garbage was degraded to produce VFAs of approximately 15,000mg C-VFAs·l-1 at less than 1 day of HRT in continuous operation. It was confirmed by SEM observation that Paenibacillus sp. is maintain as the dominant species during continuous operation. From these results, Paenibacillus sp. may be used for the acid fermentation of garbage for the effective production of VFAs with low production of NH4+-N.
社団法人　日本水環境学会の論文
2003-08-10