Journal
RESOURCES CONSERVATION AND RECYCLING
Volume 138, Issue -, Pages 238-245Publisher
ELSEVIER
DOI: 10.1016/j.resconrec.2018.07.028
Keywords
Life cycle assessment; Potassium chloride fertilizer; Electricity; Greenhouse gas; Environmental impacts; Governance
Categories
Funding
- National Key Research and Development Program of China [2017YFF0206702, 2017YFF0211605]
- Natural Science Foundation of China [71671105, 71690241, 71325006]
- Fundamental Research Funds for the Central Universities through Shanghai Jiao Tong University [16JCCS04]
- Shanghai Municipal Government [17XD1401800]
- 1000 Talents Program of Qinghai Province
- Environmental Protection Bureau of Haixi Prefecture
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Fertilizer application leads to energy consumption and greenhouse gas (GHG) emissions. In this study, aiming to quantify the environmental impacts generated from brine-based potassium chloride fertilizer production, a life cycle assessment study was conducted. Additionally, uncertainty analysis based on Monte Carlo was conducted to improve the reliability of results obtained from this study. Results show that potential impacts from global warming category and fossil depletion category contributed the most to the total environmental impacts, with the value of 1.90E+02 kg CO2 eq (GSD(2) = 1.35) and 2.57E+01 kg oil eq (GSD(2) = 1.39), respectively. Impacts generated from respiratory inorganics and water depletion category also had significant contributions, with additional contributions from the categories of terrestrial acidification, respiratory organics, non-carcinogens, carcinogens, and marine eutrophication. Key factors analysis uncovers that the overall environmental impacts were mainly caused by electricity generation, water consumption, and on-site emissions. Finally, suggestions based on research results and the local reality are proposed. Research findings from this study provide valuable insights to stakeholders so that the overall environmental impacts (specially for GHG emissions) from potash fertilizer production can be mitigated.
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