In-vessel co-composting of horse stable bedding waste and blood meal at different C/N ratios: process evaluation

Wong, Jonathan W.C., Selvam, Ammaiyappan, Zhao, Zhenyong, Karthikeyan, Obuli. P., Man Yu, Shuk, Law, Alex C.W., and Chung, Patricia C.P. (2012) In-vessel co-composting of horse stable bedding waste and blood meal at different C/N ratios: process evaluation. Environmental Technology, 33 (22). pp. 2561-2567.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: http://dx.doi.org/10.1080/09593330.2012....
10


Abstract

Abattoir blood meal is rich in nitrogen and its potential as a co-composting material for horse stable bedding waste was evaluated at two C/N ratios – 32 (LBM, low blood meal) and 16 (HBM, high blood meal) – to improve the nutrient contents of the final compost. The mix was composted for 7 days in a 10 tonne/day in-vessel composter and cured aerobically. After 56 days of composting, the ammoniacal-N, CO 2 evolution rate and C/N ratio of both LBM and HBM were within the guideline values; however, delayed decomposition and lower seed germination index were observed with HBM. In addition, HBM resulted in 84% loss of the initial ammoniacal-N. Almost similar organic decompositions, 62.4% and 59.6% with LBM and HBM, respectively, were achieved. However, a stable compost product can be obtained within 6–7 weeks with LBM, whereas>8 weeks were required for HBM composting. Therefore, co-composting at the C/N ratio of 32 is recommended to achieve odour-free and faster composting.

Item ID: 35920
Item Type: Article (Research - C1)
ISSN: 1479-487X
Keywords: composting; in-vessel; abattoir blood meal; horse stable bedding waste; C/N ratio
Date Deposited: 29 Oct 2014 00:04
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050205 Environmental Management @ 40%
05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050209 Natural Resource Management @ 30%
09 ENGINEERING > 0907 Environmental Engineering > 090703 Environmental Technologies @ 30%
SEO Codes: 85 ENERGY > 8505 Renewable Energy > 850501 Biofuel (Biomass) Energy @ 50%
90 COMMERCIAL SERVICES AND TOURISM > 9004 Water and Waste Services > 900401 Waste Management Services @ 50%
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page