การเพิ่มผลผลิตก๊าซมีเทนจากการหมักเศษผักและผลไม้ไร้อากาศแบบแห้งที่มีการหมุนเวียนน้ำชะขยะ

Enhancing Methane Production of Fruit and Vegetable Waste using Dry Anaerobic Digestion with Leachate Recirculation

Name: สุพินดา ธุระเจน

Name: Supinda Turajane

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี. คณะพลังงานสิ่งแวดล้อมและวัสดุ. สาขาวิชาเทคโนโลยีสิ่งแวดล้อม

keyword: Dry anaerobic digestion

; การหมักไร้อากาศแบบแห้ง

Abstract: In this study, investigation of solid waste degradation behavior and comparison ofmethane production efficiency from high solid anaerobic digestion with and without leachaterecycle was performed. Two 125 litters with 100 cm height of lab-scale anaerobic reactors withand without leachate recycle system were constructed. The reactor body was made from a PVCpipe with 16 inches diameter and 10.3 mm thickness.Batch anaerobic digestion was operated for 200 days. Initial conditions, such asquantities and compositions of solid waste as well as of anaerobic sludge seeded, were kept thesame for both reactors. There were three different recycle ratio of 10,25, and 50 percent appliedin this study . Input solid waste consisted of vegetable and fruit wastes from large deliverymarkets. The solid wastes were cut to the size of 5-10 cm and was mixed with anaerobic sludgefrom Huay Kwang Wastewater Treatment plant prior to addition into the reactors. Initial amountof waste was 45 kg with the density of 450 kg/m3, total solids of 58.94 percent. and total volatilesolids of 89.28 percent.The COD removal efficiency in the reactor without leachate recycle was 72.04percent. The methane yield of 0.044 L/g.COD and biogas production of 149.60 litters wasobserved. The highest methane content was 40.48 percent. For the leachate recycle reactor,efficiency for COD removal was 94.34 percent, whereas 0.183 L/g.COD of methane yield and338.58 litters of biogas production with the hghest methane content of 57.55 percent wasfound.Increasing the recycle ratios fi-om 10, 25, and 50 percent resulted in rising biogasproduction of 25.74, 156.2, and 129.14 litters, respectively. And percent methane content inoff-gas to 40.88, 48.61, and 52.45 percent, respectively. Therefore, a leachate recycle systemwas found beneficial and enhanced a more complete conversion of organic waste to methanethan a system with no recycle of leachate.Physical properties of solid waste were observed to change after the reactors wereopened for examination at the end of experiment. Solid waste fi-om the recycle reactor was blackin color and possessed smell of anaerobic sludge. Solid waste fi-om the reactor with no recyclewas not as dark as the other and possessed a vinegar-like smell. Moisture content of waste fi-omthe recycle system was higher. Efficiencies of solids and volatile solids removal for the recyclereactor were 69.18 and 67.80 percent, respectively. Whereas efficiencies of solids and volatilesolids removal for the non-recycle reactor were 56.98 and 55.86 percent, respectively

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี. สำนักหอสมุด

Address: กรุงเทพมหานคร

Email: info.lib@mail.kmutt.ac.th

Name: สิรินทรเทพ เต้าประยูร

Role: อาจารย์ที่ปรึกษา

Created: 2544

Issued: 2008-01-21

Modified: 2554-07-14

วิทยานิพนธ์/Thesis

CallNumber: EV284

tha

DegreeName: วิศวกรรมศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: เทคโนโลยีสิ่งแวดล้อม

Grantor: King Mongkut's University of Technology Thonburi

©copyrights มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	EV284.pdf	3.5 MB	412	2025-07-22 15:02:29
2	EV284ab.pdf	49.82 KB	157	2025-01-29 13:38:31
3	EV284ab.txt	2.91 KB	137	2018-12-21 03:20:37

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