Wenru Liu

Suzhou University of Science and Technology

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Yao-Liang Shen

Suzhou University of Science and Technology

Peng Wu

Ministry of Agriculture and Rural Affairs

Jianfang Wang

Chinese University of Hong Kong

Dianhai Yang

State Key Laboratory of Pollution Control and Resource Reuse

Xiao-Ming Ji

Nanjing Agricultural University

Feiyue Qian

Suzhou University of Science and Technology

Jun Mei

Shanghai Ocean University

Jing Xie

Shanghai Harbour Engineering Design & Research Institute

Xingxing Zhang

East China Normal University

Xiaonong Zhang

Suzhou University of Science and Technology

Cooperative Institutions

Suzhou University of Science and Technology

Chinese Academy of Sciences

Nanjing Agricultural University

Tongji University

Peking University

Ministry of Agriculture and Rural Affairs

University of Chinese Academy of Sciences

Shandong University

Northwest A&F University

State Key Laboratory of Pollution Control and Resource Reuse

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Effect of locust bean gum-sodium alginate coatings incorporated with daphnetin emulsions on the quality of Scophthalmus maximus at refrigerated condition

International Journal of Biological Macromolecules (2020)

Wenru Liu Jun Mei Jing Xie

Locust bean gum

Solid-Phase Microextraction

Scophthalmus

10.1016/j.ijbiomac.2020.12.089

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Citations (47)

High-throughput sequencing-based microbial characterization of size fractionated biomass in an anoxic anammox reactor for low-strength wastewater at low temperatures

Bioresource Technology (2017)

Wenru Liu Dianhai Yang Wenjing Chen Xiao Zhi Gu

Anammox

Sequencing batch reactor

Candidatus

10.1016/j.biortech.2017.01.050

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Citations (108)

Fast start-up of the cold-anammox process with different inoculums at low temperature (13 °C) in innovative reactor

Bioresource Technology (2018)

Peng Wu Chen Ya Xiao-Ming Ji Wenru Liu Gang Lv

Anammox

Start up

10.1016/j.biortech.2018.07.026

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Citations (57)

Integration of network pharmacology, metabolomics and lipidomics for clarifying the role of sphingolipid metabolism in the treatment of liver cancer by regorafenib

Life Sciences (2024)

Hua Mu Jinlong Hu Zhikun Lin Letian Wei Qi Li

Regorafenib

Sphingolipid

10.1016/j.lfs.2024.123165

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Citations (1)

[Rapid Start-up of Continuous Autotrophic Nitrogen Removal Reactor by Hybrid-inoculating PN and PN/A Granular Sludges].

PubMed (2024)

Lingli He Yaru Liu Wenru Liu Jianfang Wang Yi‐Hui Yu

The rapid cultivation of partial nitritation/ANAMMOX （PN/A） granular sludge in a continuous-flow mode is one of the key technologies for efficient biological nitrogen removal in domestic wastewater treatment. Compared with that in PN/A granular sludge, PN granular sludge demonstrates a shorter incubation period and suitability for batch culture. It is also a good carrier for enriching ANAMMOX （AMX） bacteria. In this study, we established a continuous-flow autotrophic nitrogen removal process in three continuously stirred tank reactors （CSTR）（R1-R3） by hybrid-inoculating PN/A and PN granular sludge at the mass ratios of 3∶1, 1∶1, and 1∶3, respectively. By implementing high ammonium nitrogen loading and short hydraulic retention time, continuous autotrophic nitrogen removal processes were successfully started up in the three CSTRs. The results showed that compared with that of R1 and R2, R3 had a longer start-up time but a similar steady-state nitrogen removal performance. The total nitrogen removal load of R3 could be more than 2.6 kg·（m

Autotroph

Start up

10.13227/j.hjkx.202308176

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Citations (0)

[Impact of Hydraulic Retention Time on Performance of Partial Nitrification Granular Sludge in Continuous Stirred-Tank Reactor].

PubMed (2020)

Jianfang Wang Zekun Qi Feiyue Qian Wenru Liu Jun Zhang

The effects of different hydraulic retention time (HRT) on short-cut nitrification granular sludge were studied in a continuous stirred-tank reactor (CSTR) by maintaining stable influent ammonia nitrogen load. Particle size distribution, extracellular polymeric substances (EPS), and functional bacterial kinetics were analyzed. The morphology of granular sludge, the performance of the CSTR, and the activity of functional microorganisms were investigated. The high throughout sequencing technology of MiSeq was employed to analyze the structure of the microbial community in sludge. The results showed that the ammonia nitrogen removal rate in the reactor was gradually increased from 80% to 95%, and the nitrite accumulation rate was always over 85% when the HRT was decreased from 4 h to 1 h. Particle size distribution of granular sludge was greatly influenced by HRT. The mass fraction of granules with a diameter smaller than 0.3 mm and larger than 1.6 mm was gradually declined, whereas the mass fraction of granules with a diameter between 0.3 mm and 0.8 mm was increased when HRT was shortened from 4 h to 1 h. The dominating proportion of granules with a diameter between 0.3 mm and 0.8 mm reached about 50% when HRT was 1 h. The impact of HRT on the activity of functional microorganisms was studied, and HRT activity was found to be closely related to the size of granular sludge. Proteobacteria were dominant in the system. AOB enrichment was represented by Nitrosomonas, which was more than 56%. Shortening HRT is beneficial for the enrichment of AOB.

Hydraulic retention time

Extracellular polymeric substance

Sequencing batch reactor

Nitrosomonas

10.13227/j.hjkx.201911012

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Performance and microbial ecology of a nitritation sequencing batch reactor treating high-strength ammonia wastewater

Scientific Reports (2016)

Wenjing Chen Xiaohu Dai Dawen Cao Sha Wang Xiaona Hu

Abstract The partial nitrification (PN) performance and the microbial community variations were evaluated in a sequencing batch reactor (SBR) for 172 days, with the stepwise elevation of ammonium concentration. Free ammonia (FA) and low dissolved oxygen inhibition of nitrite-oxidized bacteria (NOB) were used to achieve nitritation in the SBR. During the 172 days operation, the nitrogen loading rate of the SBR was finally raised to 3.6 kg N/m 3 /d corresponding the influent ammonium of 1500 mg/L, with the ammonium removal efficiency and nitrite accumulation rate were 94.12% and 83.54%, respectively, indicating that the syntrophic inhibition of FA and low dissolved oxygen contributed substantially to the stable nitrite accumulation. The results of the 16S rRNA high-throughput sequencing revealed that Nitrospira , the only nitrite-oxidizing bacteria in the system, were successively inhibited and eliminated, and the SBR reactor was dominated finally by Nitrosomonas , the ammonium-oxidizing bacteria, which had a relative abundance of 83%, indicating that the Nitrosomonas played the primary roles on the establishment and maintaining of nitritation. Followed by Nitrosomonas, Anaerolineae (7.02%) and Saprospira (1.86%) were the other mainly genera in the biomass.

Sequencing batch reactor

10.1038/srep35693

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Citations (28)

[Research on change process of nitrosation granular sludge in continuous stirred-tank reactor].

PubMed (2014)

Fangfang Yin Wenru Liu Jianfang Wang Peng Wu Yao-Liang Shen

In order to investigate the effect of different types of reactors on the nitrosation granular sludge, a continuous stirred-tank reactor (CSTR) was studied, using mature nitrosation granular sludge cultivated in sequencing batch reactor (SBR) as seed sludge. Results indicated that the change of reactor type and influent mode could induce part of granules to lose stability with gradual decrease in sludge settling ability during the initial period of operation. However, the flocs in CSTR achieved fast granulation in the following reactor operation. In spite of the changes of particle size distribution, e. g. the decreasing number of granules with diameter larger than 2.5 mm and the increasing number of granules with diameter smaller than 0.3 mm, granular sludge held the absolute predominance of sludge morphology in CSTR during the entire experimental period. Moreover, results showed that the change of reactor type and influent mode didn't affect the nitrite accumulation rate which was still kept at about 85% in effluent. Additionally, the average activity of the sludge in CSTR was stronger than that of the seed sludge, because the newly generated small particles in CSTR had higher specific reactive activity than the larger granules.

Granulation

Sequencing batch reactor

Nitrosation

Batch reactor

Source

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Citations (0)

Comparing nitrite-limited and ammonium-limited anammox processes treating low-strength wastewater: Functional and population heterogeneity

Chemosphere (2020)

Wenru Liu Jiajun Song Jianfang Wang Peng Wu Yao-Liang Shen

Anammox

Nitrospira

10.1016/j.chemosphere.2020.127290

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Citations (14)

Effect of Locust Bean Gum-Sodium Alginate Coatings Combined with High CO2 Modified Atmosphere Packaging on the Quality of Turbot (Scophthalmus maximus) during Refrigerated Storage

Polymers (2021)

Jie Cao Wenru Liu Jun Mei Jing Xie

This research was conducted to investigate the effect of active coatings composed of locust bean gum (LBG) and sodium alginate (SA) containing daphnetin emulsions (DEs) combined with modified atmosphere packaging (MAP) on the microbiological and physicochemical properties of turbot during 4 °C refrigerated storage for 32 days. The results revealed that LBG-SA-DE coatings together with high CO2 MAP (60% CO2/35% N2/5% O2) maintained the total viable count (TVC) of H2S-producing bacteria in 4-6 lg CFU/g, which is lower than the limit (7 lg CFU/g). In addition, LBG-SA-DE coatings together with high CO2 MAP (60% CO2/35% N2/5% O2) inhibited the production of odor compounds, including thiobarbituric acid (TBA), trimethylamine-nitrogen (TMA-N), K value, and total volatile basic nitrogen (TVB-N). The low-field NMR analysis (LF-NMR) and magnetic resonance imaging (MRI) indicated that LBG-SA-DE coatings together with high CO2 MAP (60% CO2/35% N2/5% O2) treatments could delay the release of water located in muscle fiber macromolecules or convert it into free water based on muscle fiber destruction, thus maintaining the water content and migration. The results of the sensory evaluation showed that turbot treated with LBG-SA-DE coatings together with MAP could maintain its freshness during refrigerated storage.

Modified atmosphere

Locust bean gum

Guar gum

Scophthalmus

Sodium hypochlorite

10.3390/polym13244376

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Citations (7)