Effect of recirculation rate on methane production and SEBAR system performance using active stage digester

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Tubtong C., Towprayoon S., Connor M.A., Chaiprasert P., Nopharatana A.

ผู้เผยแพร่: SAGE Publications

ปีที่เผยแพร่ (ค.ศ.): 2010

วารสาร: Waste Management & Research: The Journal for a Sustainable Circular Economy (0734-242X)

Volume number: 28

Issue number: 9

หน้าแรก: 818

หน้าสุดท้าย: 827

จำนวนหน้า: 10

นอก: 0734-242X

eISSN: 1096-3669

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957111154&doi=10.1177%2f0734242X09350058&partnerID=40&md5=dffbbf5b7e19f88e1d96a5f5f1b49cf1

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

A project was undertaken to examine the feasibility of treating organic wastes from Thai fruit and vegetable markets using the sequential batch anaerobic digester (SEBAR) approach. A key feature of the SEBAR system is the regular interchanging, or recirculation, of portions of leachate between each freshly filled digester and a support digester to which it is coupled until it is ready to operate independently. Leachate transfer from this support digester to the fresh waste digester provides additional alkalinity to help counteract the effects of early high acid release rates; it also helps build a balanced microbial population in the fresh waste digester. To optimize the leachate recirculation process, the effect of varying the quantities of leachate interchanged between freshly filled waste digesters and the still highly active support digesters to which they were coupled was studied. It was found that increasing the recirculation rate accelerated the onset of both waste degradation and methane production. The increasing of recirculation rate from 10% to 20% and 10% to 30% could reduce the SEBAR cycle period by approximately 7% and 22% without significant reduction in the amount of methane obtained from the systems. The methane yields were 0.0063, 0.0068 and 0.0077 l g -1 VS added in the NEW digester per day using leachate recirculation rates of 10%, 20% and 30%, respectively. This finding has potentially important practical and economic implications for those using the SEBAR system to add value to market waste. ฉ The Author(s), 2010.

คำสำคัญ

biogas production, garden-produce, organic waste biodegradation, sequential batch anaerobic digester