Waste Management & Research

 

Advanced Search

Journal Navigation

Journal Home

Subscriptions

Archive

Contact Us

Table of Contents

Sign In to gain access to subscriptions and/or personal tools.
This Article
Right arrow Full Text (PDF)
Right arrow References
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to Saved Citations
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Request Reprints
Right arrow Add to My Marked Citations
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Nakasaki, K.
Right arrow Articles by Kubota, H.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Nakasaki, K.
Right arrow Articles by Kubota, H.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati  
What's this?
Waste Management & Research, Vol. 11, No. 2, 117-125 (1993)
DOI: 10.1177/0734242X9301100204

Effects of pH Control On Composting of Garbage

Kiyohiko Nakasaki

Department of Chemical Engineering, Faculty of Engineering, Shizuoka University, Hamamatsu 432, Japan

Hideki Yaguchi

Department of Chemical Engineering, Faculty of Engineering, Shizuoka University, Hamamatsu 432, Japan

Yasushi Sasaki

Shizuoka Seiki Co. Ltd, 1300 Moroi, Fukuroi, Japan

Hiroshi Kubota

Emeritus of Tokyo Institute of Technology, 1-26-3, Aobadai, Midori-ku, Yokohama 227, Japan

Composting experiments of garbage were conducted by using a laboratory scale reactor under well controlled experimental conditions and the effects of pH control were quantitatively analysed. In the pH controlled experiment, lime was added to prevent pH decreasing below 7, especially at the early stage of composting. The degradation rate of organic matter in the pH controlled experiment was faster than that without. Nitrogen loss was enhanced by the control of pH value, but the amount of promotion was relatively small. The pH dependency on the activity of microorganisms, which contribute to the composting rate, was investigated by using a liquid medium containing glucose and proteins as nutrients. The optimum pH for the growth rate and the degradation activity of proteins of the microorganisms was in the range of 7-8, while the decomposition of glucose proceeded rapidly at an early stage of composting in a pH range from 6 to 9.

Key Words: Composting • reaction rate • garbage composting • pH control • nitrogen balance • NH3 evolution • composting microorganisms • waste treatment.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati    What's this?