کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6585701 | 456380 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Anaerobic co-digestion of sewage sludge and fruit wastes: Evaluation of the transitory states when the co-substrate is changed
ترجمه فارسی عنوان
هضم بی هوازی از لجن فاضلاب و ضایعات میوه: ارزیابی وضعیت های گذرا زمانی که سوبسترا تغییر می کند
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کلمات کلیدی
VFAWWTPFVWAcoDOLRCodigestionVolatile fatty acids - اسیدهای چرب فرارWAS - بودWastewater treatment plant - تصفیه خانه فاضلاب Specific methane production - تولید متان خاصTotal solids - جامدات جامدvolatile solids - جامدات فرارSMP - دانشکده دبیرستانBanana waste - زباله موزFruit waste - زباله های میوه ایApple waste - ضایعات اپلFruit and vegetable waste - ضایعات میوه و سبزیجاتpartial alkalinity - قلیایی جزئیSewage sludge - لجنWaste activated sludge - لجن فعال زبالهOrganic loading rate - نرخ بارگیری آلیAnaerobic digestion - هضم بیهوازیAnaerobic co-digestion - هضم هموگلوبینtotal alkalinity - کل قلیائیت
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Some existing anaerobic digesters treating sewage sludge have a non-used capacity. The use of this extra capacity by introducing additional wastes to conduct the co-digestion could enhance biogas production and plant economic feasibility. Fruit wastes from the food industry could be proper co-substrates due to their high biodegradability, but the harvesting seasons require the use of different kind of fruits causing many transitory conditions throughout the year. Two lab-scale continuous anaerobic digesters treating sewage sludge were operated, one as a reference reactor and the other one as a co-digester. The transitory state was evaluated when fruit waste supply was started, when the co-substrate was changed (peach, banana and apple waste) and when fruit waste supply was stopped. In the transition from mono- to co-digestion, volatile fatty acids concentration rose from 0.07 to 1.70 g Lâ1 due to the OLR increase, but this situation was recovered in only 5 days. The introduction of different kind of fruit wastes resulted in an alteration of alkalinity, without affecting volatile fatty acids concentration, and in an increase of methane production between 110% and 180% depending on the characteristics of the co-substrate. Finally, when co-digestion was stopped, the parameters converged, at different rates, to the values recorded in the reference digester. It could be concluded that the change of one co-substrate by another one of the same type did not lead to system instability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 262, 15 February 2015, Pages 1268-1274
Journal: Chemical Engineering Journal - Volume 262, 15 February 2015, Pages 1268-1274
نویسندگان
X. Fonoll, S. Astals, J. Dosta, J. Mata-Alvarez,