Article
Engineering, Environmental
Mingchao Zhu, Jingwei Wang, Danni Pei, Ji Sun, Yongze Lu, Zhaoxia Hu, Shouwen Chen, Na Li
Summary: The study employed an anaerobic membrane bioreactor (AnMBR) to successfully treat high-calcium papermaking wastewater, achieving high removal efficiency of COD and no significant accumulation of volatile fatty acids. Furthermore, the study found that the methane production capacity was negatively correlated with the inlet calcium ion concentration.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Hau-Ming Chang, Shiao-Shing Chen, Shiang-Sheng Hsiao, Wen-Shing Chang, I-Chieh Chien, Chinh Cong Duong, Thi Xuan Quynh Nguyen
Summary: A hybrid system combining anaerobic osmotic membrane bioreactor (AnOMBR) and membrane distillation (MD) was developed to remove TMAH from wastewater while investigating microbial communities. Microfiltration extraction and regular physical cleaning were used to achieve efficient TMAH removal. Analysis of fluorescence excitation-emission matrix (FEEM) and 16S rRNA meta-genomics revealed important factors in membrane fouling and methane production.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Carlo Cabreros, Mary Vermi Aizza Corpuz, Fabiano Castrogiovanni, Laura Borea, Anna Sandionigi, Giovanni Vigliotta, Florencio Ballesteros Jr, Sebastia Puig, Shadi W. Hasan, Gregory V. Korshin, Vincenzo Belgiorno, Antonio Buonerba, Vincenzo Naddeo
Summary: This study investigates the complexity of microbial communities in self-forming dynamic membrane (SFDM) systems using Next-Generation Sequencing (NGS) data. The presence of an intermittently applied electric field in the encapsulated SFDM bioreactor promotes the growth of electroactive microorganisms, leading to highly efficient wastewater treatment and mitigation of membrane fouling.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Chemical
Wancen Liu, Xiaoye Song, Xiangrui Ding, Ruohan Xia, Xiaoying Lin, Guoxue Li, Long D. Nghiem, Wenhai Luo
Summary: This study investigated the impact of hydraulic retention time (HRT) on the removal of veterinary antibiotics by anaerobic membrane bioreactor (AnMBR) for swine wastewater treatment. Results showed that the removal efficiency of antibiotics varied from 21 to 99% regardless of HRT. Increasing HRT enhanced antibiotic removal and methane yield. Prolonging HRT also reduced membrane fouling in AnMBR operation.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Review
Agricultural Engineering
Thanh Ngoc-Dan Cao, Xuan-Thanh Bui, Linh-Thy Le, Bao-Trong Dang, Duyen Phuc-Hanh Tran, Thi-Kim-Quyen Vo, Huu-Tuan Tran, Thanh-Binh Nguyen, Hussnain Mukhtar, Shu-Yuan Pan, Sunita Varjani, Huu Hao Ngo, Thi-Dieu-Hien Vo
Summary: The discharged saline wastewater has a severe impact on the aquatic environment due to the limited treatment performance of many wastewater treatment techniques. Membrane bioreactor (MBR) processes, on the other hand, have shown potential in treating saline wastewater under different salinity levels depending on the adaptation of the microbial community. This study systematically reviews the application of MBR in the treatment of saline wastewater, focusing on microbial structure and treatment efficiencies. The concept of carbon dioxide capture and storage is also proposed for MBR-based saline wastewater treatment technologies to achieve zero emission targets in the circular economy.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Wilai Chiemchaisri, Chart Chiemchaisri, Chayanid Witthayaphirom, Chitsuphang Saengam, Kanchanarin Mahavee
Summary: The study investigated the resistance alteration of antibiotic-resistant bacteria (ARB) in aging sludge of a membrane bioreactor (MBR) compared to wastewater. The results showed a significant reduction in ARB population in the MBR-aged sludge, possibly due to high dissolved oxygen levels and prolonged sludge age, highlighting the potential of reducing ARB population through appropriate MBR operation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biochemistry & Molecular Biology
Chengyue Li, Xin Du, Chuyi Huang, Zhenghua Zhang
Summary: This study investigated the efficiency of MBR technology in treating synthetic wastewater with high pharmaceutical concentrations. The results showed that MBR systems can effectively remove organics, however, high pharmaceutical concentrations can lead to membrane fouling and microbial differences. This study provides useful insights for wastewater treatment with high pharmaceutical concentrations.
Article
Environmental Sciences
Bao-Trong Dang, Xuan-Thanh Bui, Tomoaki Itayama, Huu Hao Ngo, Deokjin Jahng, Chitsan Lin, Shiao-Shing Chen, Kun-Yi Andrew Lin, Thanh-Tin Nguyen, Dinh Duc Nguyen, Todd Saunders
Summary: This study reveals the impact of CIP on bacterial community structures in the Sponge-MBR process, reducing the richness of critical phylotypes and affecting the removal efficiency of nitrogen and ammonia in wastewater treatment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Xinbo Zhang, Haojie Huang, Qing Du, Fu Gao, Zhiwen Wang, Guangxue Wu, Wenshan Guo, Huu Hao Ngo
Summary: This study investigated the effects of sulfadiazine (SDZ) on the performance of an anaerobic membrane bioreactor system for treating swine wastewater. It was found that higher concentrations of SDZ significantly suppressed the system's performance, but lower concentrations still achieved high COD removal and biogas production. The presence of SDZ increased the levels of soluble microbial product and extracellular polymeric substances, leading to a shorter membrane fouling cycle and changes in microbial community.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Agricultural Engineering
Jiayuan Ji, Jialing Ni, Akito Ohtsu, Naoko Isozumi, Yisong Hu, Runda Du, Yujie Chen, Yu Qin, Kengo Kubota, Yu-You Li
Summary: The study on using SAnMBR to treat municipal wastewater showed that high organic removal efficiency and electric energy generation were achieved at 20-25 degrees C.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Jing Zhu, Hong You, Zhipeng Li, Binghan Xie, Hongying Chen, Yi Ding, Shaojie Qi, Weirun Li, Binyu Ma, Xiankun Qu, Haili Tan, Feng Liu, How Yong Ng
Summary: The study investigated the application of photogranules in high saline mariculture wastewater treatment. The results showed that the internal circulating photogranular membrane bioreactor (IC-PMBR) exhibited better pollutant removal performance than the internal circulating photogranular sequencing batch bioreactor (IC-PSBR). The study also identified the key players in photogranules and demonstrated the role of different microorganisms in nitrogen and phosphate removal.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biotechnology & Applied Microbiology
Sajja S. Chandrasekhar, Sugali Chandra Sekhar, Swayampakula Kalyani, Sundergopal Sridhar
Summary: The study successfully treated kitchen wastewater using a bioreactor integrated membrane process, achieving significant reduction in pollutants, high water recovery rates, and providing a cost estimate for reusable water production.
BIOCHEMICAL ENGINEERING JOURNAL
(2022)
Article
Microbiology
Kymberly Newton, Emmanuel Gonzalez, Frederic E. Pitre, Nicholas J. B. Brereton
Summary: Conventional wastewater treatment relies on complex microbiota that is not yet fully characterized. This study investigated the bacterial community in different stages of wastewater treatment and found changes in species composition and abundance, with an increase in bacteria associated with nutrient cycling. While some human-associated species declined, others persisted in the effluent, including potentially harmful bacteria. Understanding microbial variation in wastewater treatment is important for efficiency and monitoring the release of microbes into the environment.
ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Engineering, Environmental
Abdelmajeed Adam Lagum, Maria Elektorowicz
Summary: The effect of intermittent direct current on the nitrifying community structure and performance in a membrane electro-bioreactor (MEBR) was investigated. The MEBR achieved substantial nitrification rates and enhanced NH3+ -N removal compared to a conventional membrane bioreactor (MBR). Different nitrifying bacteria species dominance in the MEBR and MBR led to differences in nitrification performance. Developing a fast and robust nitrifying community in MEBR can lead to cost savings in WWTPs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
JunHee Ryu, JaeHyun Jung, KiYoung Park, WonJung Song, ByeongGyu Choi, JiHyang Kweon
Summary: The membrane bioreactor with humic acid substrate (MBR-H) showed effective organic removal and the Proteobacteria phylum played a significant role in humic acid degradation. Various operational parameters in MBRs can be adjusted to facilitate the evolution of microbial consortia for efficient degradation of refractory organic matter.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Kun Li, Fan Fang, Qiang Liu, Ruihuan Luo, Jiacheng Li, Yue Zhu, Yuansong Wei, Min Addy, Paul Chen, Roger Ruan
Summary: The study monitored the variation of NF membrane fouling to reveal significant changes in the composition and concentration of foulants on the membrane surface over time, highlighting the importance of a thorough understanding of membrane fouling mechanisms.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Yanlin Chen, Qianwen Sui, Dawei Yu, Libing Zheng, Meixue Chen, Tharindu Ritigala, Yuansong Wei
Summary: A combined MC-SMBR process was developed to efficiently treat swine wastewater, achieving high removal efficiencies and meeting discharge standards. High-throughput sequencing analysis showed an increase in the relative abundance of AOB with MC pre-treatment.
Article
Engineering, Environmental
Titus Cooray, Junya Zhang, Hui Zhong, Libing Zheng, Yuansong Wei, Sujithra K. Weragoda, K. B. S. N. Jinadasa, Rohan Weerasooriya
Summary: This study investigated the response of microbial community and antibiotic resistome to CKDu prevalence in the groundwater through high throughput sequencing and qPCR respectively. Results showed that CKDu prevalence significantly influenced the distribution of antibiotic resistome and microbial community composition.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Rathmalgodage Thejani Nilusha, Yuansong Wei
Summary: The study reveals that proteins and soluble microbial by-products are the dominant foulants in the cake layer, accounting for 69% of the total membrane resistance. The archaeal and bacterial communities in the cake layer are mostly similar to those in the anaerobic bulk sludge. This finding may contribute to the development of antifouling membranes for AnMBR treating domestic wastewater.
Article
Biochemistry & Molecular Biology
Dawei Yu, Yushuai Liang, Rathmalgodagei Thejani Nilusha, Tharindu Ritigala, Yuansong Wei
Summary: A method for predicting the long-term effects of ferric on methane production accuracy was developed and tested in an anaerobic membrane bioreactor treating food processing wastewater. The results showed that ferric could enhance methane production by using different analysis methods, particularly Fe2.25.
Article
Engineering, Chemical
Mengmeng Liu, Meixue Chen, Rong Qi, Dawei Yu, Min Yang, Jiaxi Zheng, Yuansong Wei, Haizhou Du
Summary: By utilizing the ASM1 model and CFD simulation, an upgrade solution was successfully implemented for existing municipal wastewater treatment plants in cold regions of China, resulting in effluent quality compliance with Grade I-A discharge standards and energy consumption reduction. The upgrade also led to increased microbial diversity, with a significant rise in the relative abundance of denitrifying bacteria.
Article
Engineering, Environmental
Libing Zheng, Chun Zhang, Sai Kang, Chenlu Li, Deyin Hou, Shanghua Wu, Jun Wang, Yuansong Wei
Summary: This study reveals the process of microbial succession and biofouling formation in membrane distillation, providing in-depth information to fill the knowledge gap of MD biofouling.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Suresh Indika, Yuansong Wei, Dazhou Hu, Jegetheeswaran Ketharani, Tharindu Ritigala, Titus Cooray, M. A. C. K. Hansima, Madhubashini Makehelwala, K. B. S. N. Jinadasa, Sujithra K. Weragoda, Rohan Weerasooriya
Summary: The study found that RO drinking water stations established by community-based organizations in the North Central Province of Sri Lanka have high salt rejection rates and effectively remove hardness, alkalinity, and various ions. However, challenges such as low recovery rates, low fluoride levels in product water, and membrane fouling were identified, with lack of knowledge and training being major issues that could impact the lifespan of RO systems.
Article
Environmental Sciences
Dawei Yu, Liu Dian, Yonglong Hai, Mark T. Randall, Li Liu, Jibao Liu, Junya Zhang, Xiang Zheng, Yuansong Wei
Summary: This study investigates the effects of temporal evolution of rainfall on urban sewer systems. By analyzing rainfall characteristics in different temporal scales, overflow-risk identification and assessment are achieved. The results show that rainfall, urbanization, and sediments are the major driving forces for long-term CSO pollutants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Review
Environmental Sciences
Suresh Indika, Yuansong Wei, Titus Cooray, Tharindu Ritigala, K. B. S. N. Jinadasa, Sujithra K. Weragoda, Rohan Weerasooriya
Summary: This paper reviews and discusses the current status, challenges, and opportunities of groundwater quality management and improvement in Sri Lanka. Groundwater is the main source of drinking water in Sri Lanka, with different types in different regions. Higher levels of hardness, fluoride, DOC, alkalinity, and salinity are reported in the dry zone due to geology and arid climate. While some regions have significant levels of harmful substances in groundwater, the majority remain within acceptable levels. To achieve safe drinking water supply, Sri Lanka needs to invest in infrastructure and human resources for regular monitoring and assessment of groundwater quality.
Article
Engineering, Environmental
Jibao Liu, Chenlu Wang, Zhineng Hao, Gen Kondo, Manabu Fujii, Qing-Long Fu, Yuansong Wei
Summary: Understanding the composition and reactivity of dissolved organic matter (DOM) at molecular level is crucial for deciphering regulators and indicators for anaerobic process performance. High-resolution mass spectrometry, machine learning, and data mining were employed to comprehensively elucidate the DOM composition and transformation. The study found that persulfate pretreatment improved volatile fatty acids (VFAs) production, while the presence of iron reduced the VFAs production. Machine learning was able to predict the DOM reactivity classes with high accuracy by considering key molecular parameters.
Article
Environmental Sciences
Yuan Xin, Junya Zhang, Tiedong Lu, Yuansong Wei, Peihong Shen
Summary: Global climate change leads to more frequent heavy rainfall, which causes non-point source pollution and exacerbates risks to the water ecological environment. This study investigated the response of prokaryotic, eukaryotic, and algal communities to heavy rainfall in the Shahe reservoir in Beijing, China. The results showed that heavy rainfall directly impacted the composition of the prokaryotic community and introduced potential human pathogens into the reservoir. The eukaryotic community remained stable, while changes in algal communities occurred a few days after heavy rainfall. Microbial source tracking revealed that the Nansha river was the major contributor to the development of all three communities in the reservoir. Co-occurrence analysis and network analysis highlighted the importance of eukaryotes in the interaction network among the three communities. The findings suggest that controlling human potential pathogens associated with the prokaryotic community should be a priority during heavy rainfall, while preventing eutrophication blooms should be addressed afterwards.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Libing Zheng, Chenlu Li, Chun Zhang, Sai Kang, Rui Gao, Jun Wang, Yuansong Wei
Summary: Mineral scaling poses a significant challenge for membrane distillation in hypersaline wastewater desalination, but the fouling mechanism is not well understood. This study deconstructed the scaling process and identified the main foulants involved. It was found that the scaling mechanism shifted from heterogeneous nucleation to bulk crystallization, and the formation of a thick scaling layer was observed. The role of organic matter, such as humic acids and colloidal silica, in influencing the scaling mechanism was also examined. This work provides valuable insights into the mixed scaling mechanism in vacuum membrane distillation for hypersaline wastewater treatment and recovery.
Article
Engineering, Environmental
Wenchao Yu, Ye Xu, YaWei Wang, Qianwen Sui, Yuan Xin, Hui Wang, Junya Zhang, Hui Zhong, Yuansong Wei
Summary: Rainfall events contribute to the transfer of antibiotic-resistant contaminants to the environment. More comprehensive assessments are needed to understand the distribution and transport of intra- and extracellular antibiotic-resistant genes (iARGs and eARGs) in different seasons. Results showed that the abundance of eARGs was significantly higher than that of iARGs during the dry season in the reservoir, but increased after rainfall. Seasonal rainfall also affected the diversity and shared genes between iARGs and eARGs. Factors such as microbial community and dissolved organic matter played important roles in the distribution of ARGs.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Suresh Indika, Dazhou Hu, Yuansong Wei, Isuru Yapabandara, Titus Cooray, Madhubhashini Makehelwala, K. B. S. N. Jinadasa, Sujithra K. Weragoda, Rohan Weerasooriya, Zhonghe Pang
Summary: This study aimed to investigate groundwater quality in the North Central Province (NCP) of Sri Lanka in order to achieve United Nations Sustainable Development Goal 6. The study area was selected due to its high prevalence of chronic kidney disease. Results revealed elevated levels of salinity, hardness, fluoride, nitrate, sulfate, and dissolved organic carbon, as well as alkaline nature of groundwater. Water quality index analyses showed poor quality undrinkable groundwater in 8.9% and 13.8% of wells in wet and dry seasons, respectively. Reverse osmosis technology was identified as the most suitable method to treat high salinity groundwater in the NCP.