Journal
SUSTAINABILITY
Volume 13, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/su13126751
Keywords
renewable energy; biogas production; livestock manure; anaerobic digestion
Funding
- Higher Education Commission (HEC), Pakistan [21-1830/SRGP/RD/HEC/2018]
- Hamburg University of Technology (TUHH), Hamburg, Germany
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Pakistan is facing a severe energy crisis due to heavy reliance on costly fossil fuels, which can be alleviated by utilizing livestock waste and manure for biogas production since the country is primarily agricultural with a significant livestock population. Livestock manure production potential in Pakistan is substantial, with biodigester technologies offering favorable conditions to help eliminate the prevailing energy crises.
Pakistan is facing a severe energy crisis due to its heavy dependency on the import of costly fossil fuels, which ultimately leads to expansive electricity generation, a low power supply, and interruptive load shedding. In this regard, the utilization of available renewable energy resources within the country for production of electricity can lessen this energy crisis. Livestock waste/manure is considered the most renewable and abundant material for biogas generation. Pakistan is primarily an agricultural country, and livestock is widely kept by the farming community, in order to meet their needs. According to the 2016-2018 data on the livestock population, poultry held the largest share at 45.8%, followed by buffaloes (20.6%), cattle (12.7%), goats (10.8%), sheep (8.4%), asses (1.3%), camels (0.25%), horses (0.1%), and mules (0.05%). Different animals produce different amounts of manure, based upon their size, weight, age, feed, and type. The most manure is produced by cattle (10-20 kg/day), while poultry produce the least (0.08-0.1 kg/day). Large quantities of livestock manure are produced from each province of Pakistan; Punjab province was the highest contributor (51%) of livestock manure in 2018. The potential livestock manure production in Pakistan was 417.3 million tons (Mt) in 2018, from which 26,871.35 million m(3) of biogas could be generated-with a production potential of 492.6 petajoules (PJ) of heat energy and 5521.5 MW of electricity. Due to its favorable conditions for biodigester technologies, and through the appropriate development of anaerobic digestion, the currently prevailing energy crises in Pakistan could be eliminated.
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