Article
Environmental Sciences
Hanyong Zhang, Wenhu Zhou, Xuehui Zhan, Zhenxing Chi, Weiguo Li, Binsheng He, Songwen Tan
Summary: This study developed a halophilic biocarrier-MBR for treating saline pharmaceutical wastewaters. The system performed well at low ampicillin concentrations but showed decreased performance at high concentrations.
Article
Engineering, Environmental
Tulay Yilmaz, Emir Kasim Demir, Senem Teksoy Basaran, Emine Ubay Cokgor, Erkan Sahinkaya
Summary: Uncontrolled discharge of highly toxic textile industry wastewater causes serious problems in the environment, especially nitrogen-derived pollutants. This study aimed to evaluate the impact of intermittent aeration on organic matter, color, and nitrogen removal in a membrane bioreactor (MBR) receiving real textile wastewater. The results showed that intermittent aeration provided higher nitrogen removal efficiency, less sludge generation, and lower energy requirements for aeration.
JOURNAL OF WATER PROCESS ENGINEERING
(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
Engineering, Environmental
Shixin Zhang, Zhen Lei, Mawuli Dzakpasu, Qian Li, Yu-You Li, Rong Chen
Summary: Anaerobic membrane bioreactors (AnMBRs) show promising applications in treating municipal wastewater, effectively removing chemicals with strong electron-donating functional groups and highly hydrophobic compounds. Adsorption and biodegradation are key processes for TrOCs removal, and combining membrane separation technologies with bioreactor technology can enhance removal efficiency. Operating conditions play a critical role in AnMBRs performance, and addressing challenges and future perspectives can lead to wider adoption and improved TrOCs removal.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Shams Forruque Ahmed, Fatema Mehejabin, Adiba Momtahin, Nuzaba Tasannum, Nishat Tasnim Faria, M. Mofijur, Anh Tuan Hoang, Dai-Viet N. Vo, T. M. Mahlia
Summary: Membrane technology is gaining popularity in wastewater treatment due to its cost-effectiveness and environmentally friendly characteristics. This review addresses the key techniques for improving membrane performance and highlights the challenges and solutions associated with the membrane process. Hybrid techniques are also explored for enhancing membrane performance. The control strategies for membrane fouling still require optimization, and more research is needed for long-term direct membrane filtering operation.
Article
Agricultural Engineering
Muhammad Ahmar Siddiqui, Basanta Kumar Biswal, Philippe M. Heynderickx, Jeonghwan Kim, Samir Kumar Khanal, Guanghao Chen, Di Wu
Summary: This study investigated the application of an anaerobic dynamic membrane bioreactor coupled with sulfate reduction (SrDMBR) for high-salinity and high-sulfate wastewater treatment. The results showed that dynamic membrane could rapidly form after each backwashing cycle, achieving high organic removal and sulfate reduction rates. Additionally, it was found that the microbial communities enriched in the sludge were different from those on the dynamic layer.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Kaichong Wang, Zhen Zhou, Siqi Yu, Jiaxin Qiang, Yao Yuan, Yangjie Qin, Kaiqi Xiao, Xiaodan Zhao, Zhichao Wu
Summary: CAIRM combines chemically enhanced primary treatment, ammonium ion exchange, and regeneration, as well as membrane bioreactor, to efficiently treat domestic wastewater. It achieved efficient removal of pollutants, with TN concentration of 2.3±0.9 mg/L in the effluent. This integrated process addresses critical challenges of insufficient nitrogen removal and high land occupancy of current processes.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Noel Dow, T. Fawzi Saldin, Mikel Duke, Xing Yang
Summary: This study demonstrates the removal and recovery of ammonia from municipal wastewater through vacuum membrane distillation (VMD). The VMD system showed promising results in terms of reducing ammonium and meeting effluent discharge targets, making it a potentially viable option for nitrogen removal and recovery in wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Agata Egea-Corbacho, Ana Pilar Martin-Garcia, Ana Amelia Franco, Jose Maria Quiroga, Rune Rojgaard Andreasen, Mads Koustrup Jorgensen, Morten Lykkegaard Christensen
Summary: Microplastics are a major threat to the environment and aquatic life, and one of the main sources of microplastics in water and land environments is wastewater treatment plants. This study aimed to investigate the presence and removal of microplastics in wastewater and sludge from different types of treatment plants. The results showed high removal efficiency in the treatment process, with a decrease in microplastic concentration from influent to effluent. The most common forms of microplastics detected were fragments and fibers, and several types of polymers were identified.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Meibo He, Tze Chiang Albert Ng, Shujuan Huang, Boyan Xu, How Yong Ng
Summary: This study proposes the use of poly (acrylic acid) hydrogel as a post-treatment method for AnMBRs to remove and recover NH4+-N, thus promoting the circular economy and the adoption of AnMBR technology. The results show that PAA hydrogels have excellent adsorption capacities for NH4+-N and can be regenerated multiple times with minimal decline in adsorption capacity. The use of a strategic recirculation of HCl solution as an eluent also shows promise in concentrating NH4+-N as resources. Economically, the PAA hydrogel-based adsorption/desorption process coupled with eluent recirculation is cost-effective for removing and recovering NH4+-N from AnMBR effluent. Overall, this study has the potential to expand the application of AnMBRs and contribute to innovations in sustainable wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Mingzhao Wu, Jiadong Liu, Bo Gao, Mika Sillanpaa
Summary: The combination of ABMBR and electrocoagulation technology successfully addressed the issues of pollutant removal and membrane fouling, while also solving the challenge of iron plate passivation in the electrocoagulation process.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Engineering, Environmental
Gaozhong Fan, Jie Huang, Xin Jiang, Weile Meng, Rui Yang, Jinsong Guo, Fang Fang, Jixiang Yang
Summary: In this study, a continuous-flow biofilm photobioreactor combined with a membrane bioreactor (MBR) was used for high-saline wastewater treatment. The MBR effectively removed organic matter and converted ammonia nitrogen into nitrate nitrogen, providing favorable water quality for the subsequent MBPBR. The MBPBR achieved high removal efficiencies for nitrate nitrogen and phosphorus, with algae growth contributing significantly to the removal process.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Pasquale Iovino, Angelo Fenti, Simona Galoppo, Mohammad Saleh Najafinejad, Simeone Chianese, Dino Musmarra
Summary: In recent years, various industries have been releasing large amounts of saline wastewater into the environment. This study investigated the electrochemical removal of nitrogen compounds from synthetic saline wastewater using a laboratory-scale experimental reactor. The experiments examined the effects of operational parameters, such as electrolyte composition and concentration, applied current intensity, and initial ammoniacal nitrogen concentration, on the efficiency of total nitrogen removal. The results showed that using NaCl as the electrolyte resulted in higher total nitrogen removal than Na2SO4 and NaClO4, but increasing the initial NaCl concentration above 250 mg/L did not improve the removal efficiency. Increasing the current intensity from 0.05 A to 0.15 A improved the removal efficiency, but further increasing it to 0.25 A did not enhance the efficiency. Lower initial ammoniacal nitrogen concentrations led to higher removal efficiency. The highest total nitrogen removal (approximately 75%) was achieved after 90 minutes of treatment with a NaCl concentration of 250 mg/L, an applied current intensity of 0.15 A, and an initial ammoniacal nitrogen concentration of 13 mg/L. The proposed nitrogen degradation mechanism assumed a series-parallel reaction system with NH4+ in equilibrium with NH3 as the first step. The nitrogen molar balance showed that the main product of nitrogen oxidation was N-2, but NO3- was also detected. Overall, electrochemical treatment shows promise for the removal of nitrogen compounds from saline wastewater.
Article
Engineering, Chemical
Kaiqi Xiao, Kaichong Wang, Siqi Yu, Yao Yuan, Yangjie Qin, Ying An, Xiaodan Zhao, Zhen Zhou
Summary: A novel pretreatment process using chemically enhanced primary treatment (CEPT) and ammonia nitrogen ion exchange and regeneration (AIR) was proposed to improve membrane fouling in membrane bioreactors (MBRs). The pretreated MBRs showed comparable levels of COD and NH4+-N with conventional MBRs, but much lower concentrations of total nitrogen and total phosphorous. The pretreatment process effectively removed particles and soluble proteins, inhibited EPS secretion, and alleviated membrane fouling.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Environmental Sciences
Onur Isik, Melek Cagla Erbil, Amr Mustafa Abdelrahman, Mustafa Evren Ersahin, Ismail Koyuncu, Hale Ozgun, Ibrahim Demir
Summary: This study investigated the fate of micropollutants in a membrane bioreactor with dynamic membrane and ultrafiltration membrane for the treatment of raw municipal wastewater. High removal efficiencies of total suspended solids, chemical oxygen demand, and micropollutants were achieved with each membrane. Morphological analyses were conducted to gain insight into the cake layer accumulated on the membrane, showing that dynamic membrane technology provides an effective alternative for micropollutant removal from municipal wastewater.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Jin Qian, Hui Lu, Feng Jiang, George A. Ekama, Guang-Hao Chen
CHEMICAL ENGINEERING JOURNAL
(2015)
Article
Engineering, Environmental
Tessa P. H. van den Brand, Kees Roest, Guang-Hao Chen, Damir Brdjanovic, Mark C. M. van Loosdrecht
ENVIRONMENTAL ENGINEERING SCIENCE
(2015)
Article
Engineering, Environmental
Tessa P. H. van den Brand, Kees Roest, Guang-Hao Chen, Damir Brdjanovic, Mark C. M. van Loosdrecht
ENVIRONMENTAL ENGINEERING SCIENCE
(2015)
Editorial Material
Engineering, Environmental
Xiaodi Hao, Hiroaki Furumai, Guanghao Chen
Article
Engineering, Environmental
Wen-Tao Tang, Ji Dai, Rulong Liu, Guang-Hao Chen
Article
Multidisciplinary Sciences
Jun Wang, Shi-Yu Li, Feng Jiang, Ke Wu, Guang-Li Liu, Hui Lu, Guang-Hao Chen
SCIENTIFIC REPORTS
(2015)
Article
Engineering, Environmental
H. R. Mackey, G. Rey Morito, T. Hao, G. -H. Chen
CHEMICAL ENGINEERING JOURNAL
(2016)
Article
Engineering, Environmental
Weiming Yang, Qing Zhao, Hui Lu, Zhi Ding, Liao Meng, Guang-Hao Chen
Article
Engineering, Multidisciplinary
Xiaoming Liu, Ji Dai, Di Wu, Feng Jiang, Guanghao Chen, Ho-Kwong Chui, Mark C. M. van Loosdrecht
Article
Green & Sustainable Science & Technology
Andre M. K. Mbaya, Ji Dai, Guang-Hao Chen
JOURNAL OF CLEANER PRODUCTION
(2017)
Article
Engineering, Environmental
Yangyang Wei, Ji Dai, Hamish R. Mackey, Guang-Hao Chen
Article
Engineering, Chemical
Dao Guan, Ji Dai, Muhammad Ahmar Siddiqui, Guanghao Chen
SEPARATION AND PURIFICATION TECHNOLOGY
(2018)
Article
Engineering, Environmental
Feixiang Zan, Ji Dai, Yuze Hong, Meiyin Wong, Feng Jiang, Guanghao Chen
Article
Engineering, Environmental
Dao Guan, Ji Dai, Yoshimasa Watanabe, Guanghao Chen