Life cycle assessment of ethanol production from molasses in Ethiopia

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Ephrata Demissie;Ephrata Demissie;Shabbir H. Gheewala;Shabbir H. Gheewala

ปีที่เผยแพร่ (ค.ศ.): 2019

วารสาร: Journal of Sustainable Energy and Environment (1906-4918)

Volume number: 10

Issue number: 1

หน้าแรก: 1

หน้าสุดท้าย: 7

นอก: 1906-4918

URL: http://www.jseejournal.com/journal.php?id=41

บทคัดย่อ

Ethanol produced from different raw sources is used for a wide range of purposes, including as vehicle fuel. In Ethiopia, around 20 million liters of ethanol is expected to be produced from molasses every year by two dominant sugar factories (Metehara and Fincha). The main objective of this study is to assess the environmental effects of ethanol production from sugarcane molasses during the period 2016 to 2017. The functional unit is based on 1000 L-ethanol produced. Calculations were performed using the ReCiPe life cycle impact assessment method considering both midpoint and endpoint indicators. The result shows that the cultivation stage contributed the most to climate change (54.5%), photochemical oxidant formation (80%), and land use (99%) impact categories due to fertilizer production, cane burning and decomposition and application of fertilizers. On the other hand, ethanol production had a greatest contribution for resource depletion (63%), terrestrial acidification (92%), terrestrial ecotoxicity (99%), marine eutrophication (92%) and ozone depletion (84.4%) due to consumption of light fuel for ethanol plant and waste came from vinasses discharges into river. The endpoint indicators, however, showed that the cultivation stage was the major contributor to all the life cycle impacts from ethanol production. The outcome of this study is expected to be beneficial to the sugarcane sector and ethanol production, environmental and design engineers, and for academics and policymakers.

คำสำคัญ

Molasses