Novel bulking agent from clay residue for food waste composting
Journal article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Jolanun B., Towprayoon S.
Publisher: Elsevier
Publication year: 2010
Journal: Bioresource Technology (0960-8524)
Volume number: 101
Issue number: 12
Start page: 4484
End page: 4490
Number of pages: 7
ISSN: 0960-8524
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
New granular material from clay residue was investigated as a bulking agent for food waste composting. Five mixing ratios of granule were conducted in a laboratory scale reactor at the desired low rate of air (0.05 l min-1). The evolution of temperature and the accumulative CO2 emissions were monitored. Physical and chemical changes, N loss, and organic matter degradation of compost were also examined. Adoption of granules of 15% V/V (FAS 31.6%) enhanced the thermophilic composting and CO2 emissions; thus satisfying the Process to Further Reduce Pathogens (PFRP, USEPA) as well as obtaining the highest rate constant of organic matter degradation (k = 0.005 day-1). As the amount of granules was doubled (35% V/V), the temperature was not only cooled, but also promoted the substantial N loss (54%). It was suggested that bulking agent from clay residue can be used beneficially as reusable media for microbial inoculation as analyzed by SEM. ฉ 2010 Elsevier Ltd. All rights reserved.
Keywords
Bulking agent, Residue
Contact Information