Effects of carbon sources on sludge performance and microbial community for 4-chlorophenol wastewater treatment in sequencing batch reactors

Zhao, Jian; Li, Yahe; Chen, Xiurong; Li, Yu

doi:10.1016/j.biortech.2018.01.106

Cited by 101 publications

(22 citation statements)

References 40 publications

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“…Proteobacteria, Bacteroidetes, Acidobacteria, Chloroflexi, Saccharibacteria, Planctomycetes, and Nitrospirae were the most abundant bacteria at the phylum level in all AS samples ( Figure 3A). Previous studies have shown that these bacteria play important roles in the AS processes [25][26][27]. Proteobacteria was the most dominant bacterial phylum (ranging from 47% to 52%) in the AS samples.…”

Section: Taxonomic Classification Of the Bacterial Communitiesmentioning

confidence: 89%

Activated Sludge Microbial Community and Treatment Performance of Wastewater Treatment Plants in Industrial and Municipal Zones

Yang

Wang

Feng

et al. 2020

IJERPH

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Controlling wastewater pollution from centralized industrial zones is important for reducing overall water pollution. Microbial community structure and diversity can adversely affect wastewater treatment plant (WWTP) performance and stability. Therefore, we studied microbial structure, diversity, and metabolic functions in WWTPs that treat industrial or municipal wastewater. Sludge microbial community diversity and richness were the lowest for the industrial WWTPs, indicating that industrial influents inhibited bacterial growth. The sludge of industrial WWTP had low Nitrospira populations, indicating that influent composition affected nitrification and denitrification. The sludge of industrial WWTPs had high metabolic functions associated with xenobiotic and amino acid metabolism. Furthermore, bacterial richness was positively correlated with conventional pollutants (e.g., carbon, nitrogen, and phosphorus), but negatively correlated with total dissolved solids. This study was expected to provide a more comprehensive understanding of activated sludge microbial communities in full-scale industrial and municipal WWTPs.

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Section: Taxonomic Classification Of the Bacterial Communitiesmentioning

confidence: 89%

Activated Sludge Microbial Community and Treatment Performance of Wastewater Treatment Plants in Industrial and Municipal Zones

Yang

Wang

Feng

et al. 2020

IJERPH

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“…Gemmobacter are α-Proteobacteria, which are widely distributed in natural and artificial environments and are used as denitrifying bacteria. They have been reported to decrease the absorption of protein (79). The relative abundance of Gemmobacter was higher in the T1 group than in the T0 group, and was negatively correlated with trypsin activity.…”

Section: Discussionmentioning

confidence: 99%

Effect of Diet Supplemented With Rapeseed Meal or Hydrolysable Tannins on the Growth, Nutrition, and Intestinal Microbiota in Grass Carp (Ctenopharyngodon idellus)

et al. 2019

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Grass carp (Ctenopharyngodon idellus; n = 320) were received four different diets for 56 days. The experimental diets were: fishmeal (FM) containing 10% fishmeal (without rapeseed meal), and rapeseed meal (RM) containing 50% rapeseed meal (without fishmeal), and two semi-purified diets either without (T0) or with 1.25% (T1) supplemental hydrolysable tannin. The approximate content of tannin in the RM diet was 1.31%, which was close to that of T1, while the tannin content of FM was close to that of T0. The weight gain rate of grass carp of the RM group was significantly lower than that of the FM group, while the feeding conversion ratio and the feeding rate were significantly higher in the T1 group than in T0. The muscle lipid content was significantly lower in RM than in FM, while T1 was lower than T0. Intestinal activities of trypsin and α-amylase were significantly higher in T1 and RM groups compared with the other treatments. The hepatic activities of aspartate aminotransferase and alanine aminotransferase were lower in T1 and RM groups compared with the other treatments, while hepatic glycogen, and malonaldehyde were significantly higher in T1 and RM groups. In serum, the total protein and globulin contents were significantly higher in T1 and RM groups, while albumin was significantly lower in the RM group compared to the FM group. High-throughput sequencing showed that Proteobacteria, Firmicutes, and Actinobacteria were the dominant bacterial phyla among groups. The intestinal microbial diversity was higher in T1 and RM. Redundancy analysis showed that tannin, rapeseed meal, and intestinal trypsin activity were positively or negatively correlated with the relative abundance of several different intestinal microbiota at phylum and/or genus levels. The results indicated that 1.25% tannin could not be the main reason for the poor growth of grass carp of the RM group; however, the protein metabolism was disturbed, the absorption of carbohydrate was improved, and the accumulation of lipid had decreased. Furthermore, tannin and rapeseed meal supplementations modulated the intestinal microbiota, and may sequentially regulate the intestinal function by fermenting dietary nutrition, producing digestive enzymes, and modulating probiotics.

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“…At present, numerous methods like physical method (Madannejad et al, 2018), biological method (Song et al, 2019), incineration (Peng et al, 2016), advanced oxidation processes (Li et al, 2019;Luo et al, 2018;Zhou et al, 2018), zero-valent metal reduction (Duan et al, 2016;Yang et al, 2017;Zheng et al, 2019), catalytic hydrodechlorination (HDC) (Jadbabaei et al, 2017;Ma et al, 2015;Xiong et al, 2018), etc have been applied for the elimination of chlorophenols. However, harsh reaction conditions and/or special facilities are often required in these methods, many of which are high-cost and will generate even more toxic byproducts (Guan et al, 2019;Madannejad et al, 2018;Zhao et al, 2018). Among these methods, catalytic HDC is a more prospective detoxifying technologies due to low-energy demands and the fact that the highly toxic chlorophenols are effectively transformed into less harmful products, reducing dramatically their ecotoxicity (Pizarro et al, 2017;Wu et al, 2012;Xiong et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Promoted liquid-phase hydrodechlorination of chlorophenol over Raney Ni via controlling base: Performance, mechanism, and application

Liu

et al. 2020

Chemosphere

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Effects of carbon sources on sludge performance and microbial community for 4-chlorophenol wastewater treatment in sequencing batch reactors

Cited by 101 publications

References 40 publications

Activated Sludge Microbial Community and Treatment Performance of Wastewater Treatment Plants in Industrial and Municipal Zones

Activated Sludge Microbial Community and Treatment Performance of Wastewater Treatment Plants in Industrial and Municipal Zones

Effect of Diet Supplemented With Rapeseed Meal or Hydrolysable Tannins on the Growth, Nutrition, and Intestinal Microbiota in Grass Carp (Ctenopharyngodon idellus)

Promoted liquid-phase hydrodechlorination of chlorophenol over Raney Ni via controlling base: Performance, mechanism, and application

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