Freezing-low temperature treatment facilitates short-chain fatty acids production from waste activated sludge with short-term fermentation

He, Zhixiong; Zou, Zheng-Shuo; Sun, Qiang; Jin, Hong-Yu; Yao, Xing-Ye; Yang, Wenjing; Tang, Changyuan; Zhou, Aijuan; Liu, Wenzong; Ren, Yong‐Xiang; Wang, Aijie

doi:10.1016/j.biortech.2021.126337

Cited by 75 publications

(7 citation statements)

References 47 publications

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“…Romboutsia can treat T2DM by producing acetate, formate, ethanol, and a small amount of lactate from carbohydrates. 50 In this study, one of the representative microbes of Romboutsia in the NFD group positively correlated with the levels of QUICKI, HOMA-ISI, HOMA-IRI, and GLP-1, and negatively correlated with LDL-c, HOMA-IRI, FBG, TBA, TC, TG and TNF-α, which was similar to previous reports. 51 In this experiment, the Romboutsia population negatively correlated with MDA and positively correlated with SOD, which was consistent with previous reports in the literature.…”

Section: Resultssupporting

confidence: 91%

Sanghuangporus vaninii mixture ameliorated type 2 diabetes mellitus and altered intestinal microbiota in mice

Huang

Liu

et al. 2022

Food Funct.

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Section: Resultssupporting

confidence: 91%

Sanghuangporus vaninii mixture ameliorated type 2 diabetes mellitus and altered intestinal microbiota in mice

Huang

Liu

et al. 2022

Food Funct.

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“…On the other hand, C. Anammoxoglobu showed outstanding small molecule organic degradation ability compared with C. Brocadia ( Oshiki et al, 2016 ). Therefore, some heterotrophic bacteria in this system can continuously decompose complex macromolecular organics into small molecules along the flow direction ( He et al, 2021 ), allowing C. Anammoxoglobu to compete for more ecological niches using additional substrates, which also confirms the previous findings of the population shift from C. Brocadia to C. Anammoxoglobu under propionic condition ( Kartal et al, 2007b ).…”

Section: Discussionsupporting

confidence: 87%

Morphological and Spatial Heterogeneity of Microbial Communities in Pilot-Scale Autotrophic Integrated Fixed-Film Activated Sludge System Treating Coal to Ethylene Glycol Wastewater

et al. 2022

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The understanding of microbial compositions in different dimensions is essential to achieve the successful design and operation of the partial nitritation/anammox (PN/A) process. This study investigated the microbial communities of different sludge morphologies and spatial distribution in the one-stage PN/A process of treating real coal to ethylene glycol (CtEG) wastewater at a pilot-scale integrated fixed-film activated sludge (IFAS) reactor. The results showed that ammonia-oxidizing bacteria (AOB) was mainly distributed in flocs (13.56 ± 3.16%), whereas anammox bacteria (AnAOB) was dominated in the biofilms (17.88 ± 8.05%). Furthermore, the dominant AnAOB genus in biofilms among the first three chambers was Candidatus Brocadia (6.46 ± 2.14% to 11.82 ± 6.33%), whereas it was unexpectedly transformed to Candidatus Kuenenia (9.47 ± 1.70%) and Candidatus Anammoxoglobus (8.56 ± 4.69%) in the last chamber. This demonstrated that the niche differentiation resulting from morphological (dissolved oxygen) and spatial heterogeneity (gradient distribution of nutrients and toxins) was the main reason for dominant bacterial distribution. Overall, this study presents more comprehensive information on the heterogeneous distribution and transformation of communities in PN/A processes, providing a theoretical basis for targeted culture and selection of microbial communities in practical engineering.

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“…From the genus assignment results, the Bacteroides exhibited a higher proportion than other genera in A1 chamber on day 30 ( Figure 5A ), this was probably due to its enrichment could promote the degradation of glucose ( Wang et al, 2021a ). Notably, the Bacteroides was not observed on day 190, with greater abundances of Macellibacteroides , Trichococcus , and paraclostridium were observed in A1 chamber, their existences have been confirmed could help to degrade the organic matters ( Yan et al, 2020 ; She et al, 2021 ; He et al, 2022 ). The changes in the microbial community within the A1 chamber may be attributed to changes in the influent conditions and environmental factors.…”

Section: Resultsmentioning

confidence: 90%

An efficient anoxic/aerobic/aerobic/anoxic process for domestic sewage treatment: From feasibility to application

et al. 2022

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In this paper, the anoxic/aerobic/aerobic/anoxic (AOOA) process was proposed using fixed biofilms in a continuous plug-flow multi-chamber reactor, and no sludge reflux operation was performed during the 190 days of operation. The reactor volume ratio of 1.5:2:1.5:1 (A/O/O/A) with the dissolved oxygen (DO) concentration of 2 mg L−1 in the aerobic zone was the optimal condition for reactor operation. According to the results obtained from the treatment of real domestic sewage, when the hydraulic retention time (HRT) was 6 h, the effluent of the reactor could meet the discharge standard even in cold conditions (13°C). Specifically, the elemental-sulfur-based autotrophic denitrification (ESAD) process contributed the most to the removal of total inorganic nitrogen (TIN) in the reactor. In addition, the use of vibration method was helpful in removing excess sludge from the biofilms of the reactor. Overall, the AOOA process is an efficient and convenient method for treating domestic sewage.

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Freezing-low temperature treatment facilitates short-chain fatty acids production from waste activated sludge with short-term fermentation

Cited by 75 publications

References 47 publications

Sanghuangporus vaninii mixture ameliorated type 2 diabetes mellitus and altered intestinal microbiota in mice

Sanghuangporus vaninii mixture ameliorated type 2 diabetes mellitus and altered intestinal microbiota in mice

Morphological and Spatial Heterogeneity of Microbial Communities in Pilot-Scale Autotrophic Integrated Fixed-Film Activated Sludge System Treating Coal to Ethylene Glycol Wastewater

An efficient anoxic/aerobic/aerobic/anoxic process for domestic sewage treatment: From feasibility to application

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