دورية أكاديمية
أعرض في EDS

Optimizing alkali-pretreatment dosage for waste-activated sludge disintegration and enhanced biogas production yield.

التفاصيل البيبلوغرافية
العنوان: Optimizing alkali-pretreatment dosage for waste-activated sludge disintegration and enhanced biogas production yield.
المؤلفون: Machhirake N; CSIR- National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India., Singh D; CSIR- National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India., Yadav BR; CSIR- National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India., Tembhare M; CSIR- National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India., Kumar S; CSIR- National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India. Electronic address: s_kumar@neeri.res.in.
المصدر: Environmental research [Environ Res] 2024 Jul 01; Vol. 252 (Pt 2), pp. 118876. Date of Electronic Publication: 2024 Apr 04.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Elsevier Country of Publication: Netherlands NLM ID: 0147621 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1096-0953 (Electronic) Linking ISSN: 00139351 NLM ISO Abbreviation: Environ Res Subsets: MEDLINE
أسماء مطبوعة: Publication: <2000- > : Amsterdam : Elsevier
Original Publication: New York, Academic Press.
مواضيع طبية MeSH: Sewage*/chemistry , Biofuels*/analysis, Anaerobiosis ; Waste Disposal, Fluid/methods ; Alkalies/chemistry ; Methane ; Sodium Hydroxide/chemistry ; Calcium Hydroxide/chemistry ; Magnesium Hydroxide/chemistry ; Bioreactors ; Hydroxides/chemistry ; Potassium Compounds/chemistry
مستخلص: The rapid transition towards modernization and industrialization led to an increase in urban population, resulting in paramount challenge to municipal sewage sludge management. Anaerobic digestion (AD) serves as a promising venue for energy recovery from waste-activated sludge (WAS). Addressing the challenge of breaking down floc structures and microbial cells is crucial for releasing extracellular polymeric substances and cytoplasmic macromolecules to facilitate hydrolysis and fermentation process. The present study aims to introduce a combined process of alkaline/acid pre-treatments and AD to enhance sludge digestion and biogas production. The study investigates the influence of alkali pretreatment at ambient temperature using four alkali reagents (NaOH, Ca(OH) 2 , Mg(OH) 2 , and KOH). The primary goal is to provide insights into the intricate interplay of alkali dosages (0.04-0.12 g/gTS) on key physic-chemical parameters crucial for optimizing the pre-treatment dosage. Under the optimized alkaline/acid pre-treatment condition, the TSS reduction of 18%-30% was achieved. An increase in sCOD concentration (24%-50%) signifies the enhanced hydrolysis and solubilization rate of organic substrate in WAS. Finally, the biomethane potential test (BMPT) was performed for pre-treated WAS samples. The maximum methane (CH 4 ) yield was observed in combination A 1 (244 mL/g) and D 1 (253 mL/g), demonstrating the pivotal role of alkali optimization in enhancing AD efficiency. This study serves as a valuable resource to policymakers, researchers, and technocrats in addressing challenges associated to sludge management.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Inc. All rights reserved.)
فهرسة مساهمة: Keywords: Alkali-pretreatment; Anaerobic digestion; Methane production; Sludge disintegration
المشرفين على المادة: 0 (Sewage)
0 (Biofuels)
0 (Alkalies)
OP0UW79H66 (Methane)
55X04QC32I (Sodium Hydroxide)
PF5DZW74VN (Calcium Hydroxide)
NBZ3QY004S (Magnesium Hydroxide)
WZH3C48M4T (potassium hydroxide)
0 (Hydroxides)
0 (Potassium Compounds)
تواريخ الأحداث: Date Created: 20240406 Date Completed: 20240605 Latest Revision: 20240605
رمز التحديث: 20240606
DOI: 10.1016/j.envres.2024.118876
PMID: 38582420
قاعدة البيانات: MEDLINE
الوصف
تدمد:1096-0953
DOI:10.1016/j.envres.2024.118876