Co-composting of livestock manure with rice straw characterization and establishment of maturity evaluation system

Co-composting of livestock manure with rice straw : characterization and establishment of maturity evaluation system

Copyright © 2013 Elsevier Ltd. All rights reserved.

Détails bibliographiques
Publié dans:Waste management (New York, N.Y.). - 1999. - 34(2014), 2 vom: 04. Feb., Seite 530-5
Auteur principal: Qian, Xiaoyong (Auteur)
Autres auteurs: Shen, Genxiang, Wang, Zhenqi, Guo, Chunxia, Liu, Yangqing, Lei, Zhongfang, Zhang, Zhenya
Format: Article en ligne
Langue:English
Publié: 2014
Accès à la collection:Waste management (New York, N.Y.)
Sujets:Comparative Study Journal Article Research Support, Non-U.S. Gov't Co-composting Dairy manure Maturity evaluation index system Rice straw Swine manure Manure Soil plus... Nitrogen N762921K75
Description
Résumé:Copyright © 2013 Elsevier Ltd. All rights reserved.
Composting is considered to be a primary treatment method for livestock manure and rice straw, and high degree of maturity is a prerequisite for safe land application of the composting products. In this study pilot-scale experiments were carried out to characterize the co-composting process of livestock manure with rice straw, as well as to establish a maturity evaluation index system for the composts obtained. Two pilot composting piles with different feedstocks were conducted for 3 months: (1) swine manure and rice straw (SM-RS); and (2) dairy manure and rice straw (DM-RS). During the composting process, parameters including temperature, moisture, pH, total organic carbon (TOC), organic matter (OM), different forms of nitrogen (total, ammonia and nitrate), and humification index (humic acid and fulvic acid) were monitored in addition to germination index (GI), plant growth index (PGI) and Solvita maturity index. OM loss followed the first-order kinetic model in both piles, and a slightly faster OM mineralization was achieved in the SM-RS pile. Also, the SM-RS pile exhibited slightly better performance than the DM-RS according to the evolutions of temperature, OM degradation, GI and PGI. The C/N ratio, GI and PGI could be included in the maturity evaluation index system in which GI>120% and PGI>1.00 signal mature co-composts
Description:Date Completed 15.09.2014
Date Revised 16.11.2017
published: Print-Electronic
Citation Status MEDLINE
ISSN:1879-2456
DOI:10.1016/j.wasman.2013.10.007