دورية أكاديمية
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Aerobic digestibility of waste aerobic granular sludge (AGS) assessed by respirometry, physical-chemical analyses, modeling and 16S rRNA gene sequencing.

التفاصيل البيبلوغرافية
العنوان: Aerobic digestibility of waste aerobic granular sludge (AGS) assessed by respirometry, physical-chemical analyses, modeling and 16S rRNA gene sequencing.
المؤلفون: Fall C; Universidad Autónoma del Estado de México (UAEM), Instituto Interamericano de Ciencias y Tecnología del Agua (IITCA), Carr. Toluca-Ixtlahuaca, km. 14.5, C.P. 50120, San Cayetano, Toluca, Mexico. Electronic address: c-fa-ll@hotmail.com., Romero-Camacho MP; Universidad Autónoma del Estado de México (UAEM), Instituto Interamericano de Ciencias y Tecnología del Agua (IITCA), Carr. Toluca-Ixtlahuaca, km. 14.5, C.P. 50120, San Cayetano, Toluca, Mexico., Olguín MT; Instituto Nacional de Investigaciones Nucleares (ININ), México. La Marquesa, Ocoyoacac, Mexico., Rosas-Echeverría K; Universidad Autónoma del Estado de México (UAEM), Instituto Interamericano de Ciencias y Tecnología del Agua (IITCA), Carr. Toluca-Ixtlahuaca, km. 14.5, C.P. 50120, San Cayetano, Toluca, Mexico., Esparza-Soto M; Universidad Autónoma del Estado de México (UAEM), Instituto Interamericano de Ciencias y Tecnología del Agua (IITCA), Carr. Toluca-Ixtlahuaca, km. 14.5, C.P. 50120, San Cayetano, Toluca, Mexico., Salinas-Tapia H; Universidad Autónoma del Estado de México (UAEM), Instituto Interamericano de Ciencias y Tecnología del Agua (IITCA), Carr. Toluca-Ixtlahuaca, km. 14.5, C.P. 50120, San Cayetano, Toluca, Mexico., Lucero-Chávez M; Universidad Autónoma del Estado de México (UAEM), Instituto Interamericano de Ciencias y Tecnología del Agua (IITCA), Carr. Toluca-Ixtlahuaca, km. 14.5, C.P. 50120, San Cayetano, Toluca, Mexico., Alcaraz-Ibarra S; Universidad Autónoma del Estado de México (UAEM), Instituto Interamericano de Ciencias y Tecnología del Agua (IITCA), Carr. Toluca-Ixtlahuaca, km. 14.5, C.P. 50120, San Cayetano, Toluca, Mexico.
المصدر: Journal of environmental management [J Environ Manage] 2024 Apr; Vol. 356, pp. 120639. Date of Electronic Publication: 2024 Mar 22.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Academic Press Country of Publication: England NLM ID: 0401664 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1095-8630 (Electronic) Linking ISSN: 03014797 NLM ISO Abbreviation: J Environ Manage Subsets: MEDLINE
أسماء مطبوعة: Original Publication: London ; New York, Academic Press.
مواضيع طبية MeSH: Sewage*/chemistry , Waste Disposal, Fluid*/methods, RNA, Ribosomal, 16S/genetics ; Genes, rRNA ; Bioreactors/microbiology ; Bacteria/genetics ; Aerobiosis ; Nitrogen
مستخلص: Research has evolved on aerobic granular sludge (AGS) process, but still there are very few studies on the treatment of excess AGS sludge, with almost none considering its aerobic digestion. Here therefore, the aerobic digestibility of typical AGS sludge was assessed. Granules were produced from acetate-based synthetic wastewater (WW) and were subjected to aerobic digestion for 64 d. The stabilization process was monitored over time through physical-chemical parameters, oxygen uptake rates (OUR) and 16S rRNA gene sequencing. The microbial analyses revealed that the cultivated granules were dominated by slow-growing bacteria, mainly ordinary heterotrophic organisms with potential for polyhydroxyalkanoates (PHA) aerobic storage (PHA-OHOs), polyphosphate and glycogen accumulating organisms (PAOs and GAOs), fermentative anaerobes and nitrifiers (AOB and NOB). Differential abundance analysis of the bacterial data (before versus after digestion) discriminated between the most vulnerable microbiome genera and those most resistant to aerobic digestion. Furthermore, modeling of the stabilization process determined that the endogenous decay rate constant (b H ) for the heterotrophs present in the granules was notably low; b H  = 0.05 d -1 (average), four times less than for common activated sludge (AS), which is rated at 0.2 d -1 . For first time, the research reveals another important feature of AGS sludge, i.e. the slow-decaying character of its bacteria (along with their known slow-growing character). This results in slower stabilization, need of bigger digesters and reconsideration of the specific OUR limits in biosolids regulations (SOUR limit of 1.5 mg/gTSS.h), for waste AGS compared to conventional waste AS. The study suggests that aerobic digestion of waste AGS (fully-granulated) could differ from that of conventional AS. Future work is needed on aerobic digestibility of real AGS sludges from municipal and industrial WWs, compared to synthetic WWs.
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 Ltd. All rights reserved.)
فهرسة مساهمة: Keywords: 16S rRNA gene sequencing; Activated sludge; Biosolids; Digestion; aerobic granular sludge; modeling
المشرفين على المادة: 0 (Sewage)
0 (RNA, Ribosomal, 16S)
N762921K75 (Nitrogen)
تواريخ الأحداث: Date Created: 20240323 Date Completed: 20240408 Latest Revision: 20240408
رمز التحديث: 20240408
DOI: 10.1016/j.jenvman.2024.120639
PMID: 38520857
قاعدة البيانات: MEDLINE
الوصف
تدمد:1095-8630
DOI:10.1016/j.jenvman.2024.120639