Influence of temperature and pH on dissolution and biodegradation kinetics of water extractable organic carbon from municipal solid waste

Chuan Fu Wu, Takayuki Shimaoka, Teppei Komiya, Qun Hui Wang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The organic carbon dissolution behavior under different temperatures and pH value conditions was investigated by means of both experiments and numerical simulation. Increasing leaching temperature was beneficial for accelerating the dissolution rate of rapidly dissolving organic carbon fraction. However, the dissolution amount of organic carbon was not improved under high temperature conditions. On the other hand, lower leaching pH values were favorable for dissolving organic carbon from solid phase. Under different leaching conditions, the dissolution rates of organic carbon were in the order of 0.05~0.22 m3/(kg·h), while rapidly dissolving fraction of organic carbon accounted for 30%~50% of the total and its dissolution rates ranged from 14 h-1 to 65 h-1 (orders of magnitude were three times higher than that of slowly dissolving fraction of organic carbon). Moreover, the incubation experiment results indicated that more than 79% of the water extractable organic carbon was hard to be decomposed by in-situ bacteria under anaerobic condition.

Original languageEnglish
Pages (from-to)976-982
Number of pages7
JournalZhongguo Huanjing Kexue/China Environmental Science
Volume34
Issue number4
Publication statusPublished - Apr 2014

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)

Cite this