EconPapers    
Economics at your fingertips  
 

Technical and operational feasibility of psychrophilic anaerobic digestion biotechnology for processing ammonia-rich waste

Daniel I. Massé, Rajinikanth Rajagopal and Gursharan Singh

Applied Energy, 2014, vol. 120, issue C, 49-55

Abstract: Ammonia nitrogen plays a critical role in the performance and stability of anaerobic digestion (AD) of ammonia rich wastes like animal manure. Nevertheless, inhibition due to high ammonia remains an acute limitation in AD process. A successful long-term operation of AD process at high ammonia (>5gN/L) is limited. This study focused on validating technical feasibility of psychrophilic AD in sequencing batch reactor (PADSBR) to treat swine manure spiked with NH4Cl up to 8.2±0.3gN/L, as a representative of N-rich waste. CODt, CODs, VS removals of 86±3, 82±2 and 73±3% were attained at an OLR of 3gCOD/L.d, respectively. High-ammonia had no effect on methane yields (0.23±0.04L CH4/gTCODfed) and comparable to that of control reactors, which fed with raw swine manure alone (5.5gN/L). Longer solids/hydraulic retention times in PADSBRs enhanced biomass acclimation even at high-ammonia. Thus VFA, an indicator for process stability, did not accumulate in PADSBR. Further investigation is essential to establish the maximum concentrations of TKN and free ammonia that the PADSBR can sustain.

Keywords: Ammonia inhibition; Biomass acclimation; Pig manure; Psychrophilic anaerobic digestion; Sequencing batch reactor (search for similar items in EconPapers)
Date: 2014
References: View complete reference list from CitEc
Citations View citations in EconPapers (4) Track citations by RSS feed

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261914000531
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:120:y:2014:i:c:p:49-55

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Series data maintained by Dana Niculescu ().

 
Page updated 2017-09-29
Handle: RePEc:eee:appene:v:120:y:2014:i:c:p:49-55