کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8843806 | 1616287 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of ultrasonic pretreatment on the semicontinuous anaerobic digestion of waste activated sludge with increasing loading rates
ترجمه فارسی عنوان
اثر پیش پردازش اولتراسونیک بر هضم بی هوازی نیمه هادی لجن فعال با افزایش میزان بارگذاری
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کلمات کلیدی
پیش درمان اولتراسونیک، هضم بی هوازی بی هوازی، لجن فعال زباله، نرخ بارگیری آلی، تولید بیوگاز،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
علوم زیست محیطی (عمومی)
چکیده انگلیسی
Anaerobic digestion (AD) is the most widely used method to stabilize and recover energy from waste activated sludge (WAS). However, AD of sludge results in a low biogas yield. Ultrasonic pretreatment (USp) is the most effective sludge disintegration technology and has elicited interest to increase the biodegradability and improve the efficiency of the AD. This study investigated the influence of USp on the semicontinuous AD of WAS as a strategy to increase its performance. During an experiment lasting 90 days, 0.8-L digesters were semicontinuously fed under different conditions: raw sludge and sonicated at 15000, 25000 and 35000â¯kJ/kg TS (total solids); and an increase of the organic loading rate (OLR) from 1 to 3 kgVS/m3·d, for 30 days each. The maximum biogas rate (0.218â¯L/d) was reached at 25000â¯kJ/kg TS and 3 kgVS/m3·d. The highest VS removal efficiency (23.7%) was observed at the highest USp and the lowest OLR. The reactors fed with raw sludge had a lower performance compared to the sonicated WAS in terms of VS reduction and biogas production. In contrast, the USp allowed the bioreactors to be operated at a high OLR (3 kgVS/m3·d) without inhibition. Finally, a kinetic analysis of accumulated biogas was performed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Biodeterioration & Biodegradation - Volume 130, May 2018, Pages 32-39
Journal: International Biodeterioration & Biodegradation - Volume 130, May 2018, Pages 32-39
نویسندگان
Alfredo Córdova Lizama, Cristian Carrera Figueiras, Alejandro Zepeda Pedreguera, Juan Enrique Ruiz Espinoza,