کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7075458 | 1459967 | 2015 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Lactic acid and methane: Improved exploitation of biowaste potential
ترجمه فارسی عنوان
اسید لاکتیک و متان: بهره برداری از پتانسیل زیستی بهتر است
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
This feasibility study investigated a two-step biorefining approach to increase the value gained by recycling of organic municipal solid waste. Firstly, lactic acid was produced via batch fermentation at 37 °C using the indigenous microbiome. Experiments revealed an optimal fermentation period of 24 h resulting in high yields of lactic acid (up to 37 g kgâ1). The lactic acid proportion of total volatile fatty acid content reached up to 83%. Lactobacilli were selectively enriched to up to 75% of the bacterial community. Additionally conversion of organic matter to lactic acid was increased from 22% to 30% through counteracting end product inhibition by continuous lactic acid extraction. Secondly, fermentation residues were used as co-substrate in biomethane production yielding up to 618 ± 41 Nml biomethane gâ1 volatile solids. Digestate, the only end product of this process can be used as organic fertilizer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 176, January 2015, Pages 47-55
Journal: Bioresource Technology - Volume 176, January 2015, Pages 47-55
نویسندگان
G. Dreschke, M. Probst, A. Walter, T. Pümpel, J. Walde, H. Insam,