Performance evaluation of an anaerobic/aerobic landfill-based digester using yard waste for energy and compost production

Journal Article · Tue May 15 00:00:00 EDT 2012 · Waste Management

DOI:https://doi.org/10.1016/j.wasman.2012.01.003· OSTI ID:21612968

Yazdani, Ramin ^[1]; Augenstein, Don ^[2]; Kayhanian, Masoud ^[3]; Tchobanoglous, George ^[3]

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1. Yolo County Planning and Public Works Department, Division of Integrated Waste Management, Woodland, CA 95776 (United States)
2. Institute for Environmental Management, Inc., Palo Alto, CA 94306 (United States)
3. Civil and Environmental Engineering, University of California, One Shields Avenue, Ghausi Hall, Davis, CA 95616 (United States)

Highlights: Black-Right-Pointing-Pointer Biochemical methane potential decreased by 83% during the two-stage operation. Black-Right-Pointing-Pointer Net energy produced was 84.3 MWh or 46 kWh per million metric tons (Mg). Black-Right-Pointing-Pointer The average removal efficiency of volatile organic compounds (VOCs) was 96-99%. Black-Right-Pointing-Pointer The average removal efficiency of non-methane organic compounds (NMOCs) was 68-99%. Black-Right-Pointing-Pointer The two-stage batch digester proved to be simple to operate and cost-effective. - Abstract: The objective of this study was to evaluate a new alternative for yard waste management by constructing, operating and monitoring a landfill-based two-stage batch digester (anaerobic/aerobic) with the recovery of energy and compost. The system was initially operated under anaerobic conditions for 366 days, after which the yard waste was aerated for an additional 191 days. Off gas generated from the aerobic stage was treated by biofilters. Net energy recovery was 84.3 MWh, or 46 kWh per million metric tons of wet waste (as received), and the biochemical methane potential of the treated waste decreased by 83% during the two-stage operation. The average removal efficiencies of volatile organic compounds and non-methane organic compounds in the biofilters were 96-99% and 68-99%, respectively.

• OSTI ID: 21612968
• Journal Information: Waste Management, Vol. 32, Issue 5; Other Information: DOI: 10.1016/j.wasman.2012.01.003; PII: S0956-053X(12)00017-7; Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0956-053X
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ANAEROBIC CONDITIONS
COMPOST
COMPOSTING
COST
EFFICIENCY
FILTERS
METHANE
MONITORING
NET ENERGY
SANITARY LANDFILLS
VOLATILE MATTER
ALKANES
ENERGY
ENERGY ANALYSIS
HYDROCARBONS
MANAGEMENT
MATTER
ORGANIC COMPOUNDS
ORGANIC WASTES
PROCESSING
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE PROCESSING
WASTES