Abstract：
:This study aimed to investigate the potential of energy crops for biomethane production by examining the influence of abattoir and municipal wastewater irrigation on biomass production and the Biochemical Methane Potential (BMP). The experiments covered seven energy crops including sugar beet, alfalfa, maize, giant reed, napier grass, sunflower and canola. The biomass was harvested at three months of planting and BMP of each energy crops was assessed using anaerobic digestion. Giant reed yielded the highest biomass (22.3 t ha-1) from A800 treatment compared to the other species. The best performance for BMP (793.56 Nml CH4 g VS-1) was recorded for maize biomass irrigated with abattoir wastewater which is equivalent to gross energy yield 1041 GJ ha-1 yr-1 or electricity yield 284.8 MW h ha-1 yr-1. The digestate samples collected after anaerobic digestion of biomass from plants were analysed for their nutrient value. Nutrient content of digestates varied between energy crops, waste water sources and irrigation levels. The highest nitrate content was measured for giant reed (A800) and phosphate and sulphate contents for sugar beet leaf (A800). The results indicated that wastewater sources can be used to grow energy crops, thereby producing biomethane for energy and digestate for plant nutrition through anaerobic digestion process.
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
Shilpi S,Lamb D,Bolan N,Seshadri B,Choppala G,Naidu Rdoi
10.1016/j.jenvman.2019.02.122subject
Has Abstractpub_date
2019-06-01 00:00:00pages
73-83eissn
0301-4797issn
1095-8630pii
S0301-4797(19)30282-8journal_volume
239pub_type
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