Article
Water Resources
Wei Zhang, Fei Ma, Min Ren, Fangqin Yang
Summary: The Anoxic-oxic process, also known as anaerobic-aerobic process, is widely used in wastewater treatment, especially in China, due to its high efficiency and good-quality permeate. However, to ensure stable operation, it is important to use Internet of Things technology for dynamic monitoring and control.
APPLIED WATER SCIENCE
(2021)
Article
Engineering, Environmental
Xiaoyuan Zhang, Yu Liu
Summary: This article proposes transitioning municipal wastewater treatment towards circular economy, utilizing resources in wastewater and achieving energy and carbon neutrality. Municipal wastewater is not just waste, but a renewable resource of freshwater, energy, and mineral nutrients, which can be achieved through resource recovery and reuse for environmental and economic sustainability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
M. J. Moya-Llamas, A. Trapote, D. Prats
Summary: The study evaluated the biological removal of carbamazepine from low-strength municipal wastewater using an Upflow Anaerobic Sludge Blanket reactor and a two-stage membrane bioreactor. It found that the highest removal rates were achieved during the anaerobic stage, with the aerobic treatment serving to further improve removal efficiency. The results demonstrate the potential of combined biological systems in removing recalcitrant pharmaceuticals.
WATER SCIENCE AND TECHNOLOGY
(2021)
Review
Engineering, Chemical
Yan Zhao, Yangbo Qiu, Natalie Mamrol, Longfei Ren, Xin Li, Jiahui Shao, Xing Yang, Bart van der Bruggen
Summary: Hospital wastewater contains harmful substances that require effective treatment. Membrane technology is utilized for molecular separation, with MBR technology demonstrating high removal efficiency. The development of hybrid MBR and integrated MBR-membrane systems can improve wastewater treatment efficiency and material recovery.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2022)
Review
Engineering, Environmental
Recep Kaya, Mustafa Evren Ersahin, Hale Ozgun, Borte Kose-Mutlu, Mehmet Emin Pasaoglu, Ismail Koyuncu
Summary: Membrane bioreactor (MBR) technology is considered a promising method for advanced wastewater treatment due to its high-quality effluent. However, fouling caused by intensive activated sludge used in submerged MBR systems is a major issue. To overcome this problem, researchers have explored the use of vibratory processes in MBRs. This review aims to gather current efforts in fouling control by vibratory motion, specifically in submerged activated sludge membrane bioreactors, and presents a comparative analysis of different vibration types and their experimental results.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Jian Wang, Yucheng Tian, Jian Wei, Huibin Yu, Chunjian Lyu, Yonghui Song
Summary: This study investigates the negative effects of dibutyl phthalate (DBP), a common contaminant in pharmaceutical wastewater, on the performance of a municipal wastewater treatment system. The results show that DBP significantly inhibits the removal of chemical oxygen demand (COD) and total nitrogen (TN) in the system. The study also reveals the specific impacts of DBP on the bacterial community structure, particularly on denitrifying bacteria.
Review
Environmental Sciences
Qi Zhao, Yongzhen Peng, Jianwei Li, Ruitao Gao, Tipei Jia, Liyan Deng, Rui Du
Summary: This review highlights the importance of anammox technology in wastewater treatment and introduces strategies and methods for introducing anammox into municipal wastewater treatment. By analyzing microbial interactions and proposing targeted control strategies, promising solutions for upgrading municipal WWTPs with anammox technology are provided.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
H. Taherizadeh, S. A. Hashemifard, A. A. Izadpanah, A. F. Ismail
Summary: The study demonstrated that modifying PVC polymer with zinc oxide nanoparticles and using ferric chloride coagulant for municipal wastewater treatment is an effective technique to meet standard levels and improve nitrogen and phosphorus removal efficiency.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Fan Wang, Yangwu Chen, Lin Wang, Dan Meng, Rongxia Zhu, Yong Li, Zhouliang Tan, Qinwen Deng
Summary: This study analyzed the fate of antibiotics, antibiotic resistance genes (ARGs), and microbial community during the upgrading process of a municipal wastewater treatment plant (MWTP) using Anaerobic/Anoxic/Oxic-membrane bioreactor (A(2)/O-MBR) from regulation to stable operation phase. The study identified the factors influencing ARGs distribution and the potential hosts for ARGs. The results showed an increase in the removal rate of total antibiotics and reduction of ARGs during the upgrading process. The most prevalent ARG was sul1, and mobile genetic elements (MGEs) and microbial community were found to be the main factors affecting ARGs distribution. The abundance of potential antibiotic resistance bacteria (ARB) decreased significantly during the upgrading process. This study provides a theoretical basis for using MBR process to remove antibiotics and ARGs in MWTPs upgrading process.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Shengqiang Hei, Hui Xu, Yanchen Liu, Biming Liu, Shuo Zhang, Xianzheng Zhu, Weichen Lin, Lu Chen, Haisha Jiang, Xianwei Cheng, Xiaolei Yong, Xiaoyi Wu, Xia Huang
Summary: Phosphorus removal from wastewater is crucial for limiting water eutrophication. This study focused on enhancing biological phosphorus removal (BPR) efficiency in real full-scale municipal wastewater treatment plants (WWTPs) through improved redox environment and reduced chemicals consumption. The results showed that the strategy successfully increased BPR contribution, reduced chemicals dosage, and enriched phosphate-accumulating organisms (PAO) in the treatment process.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Multidisciplinary Sciences
Saber A. El-Shafai, Mohamed El-Qelish, Waleed M. Zahid
Summary: Municipal wastewater treatment is a sustainable method for protecting and reusing fresh water resources. This study found that adding ferric chloride can enhance the removal of total phosphorous, but it does not improve membrane filterability or sludge flocculation. To improve phosphorus removal in MBR systems, it is recommended to add coagulants to the final permeate.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Review
Green & Sustainable Science & Technology
Yemei Li, Yuanyuan Ren, Jiayuan Ji, Yu-You Li, Takuro Kobayashi
Summary: This study summarizes the diverse roles of anaerobic membrane bioreactors (AnMBRs) in municipal wastewater treatment process, including energy generation, fouling issue, sewage sludge digestion, and biogas upgrading. Strategies to improve treatment effectiveness and prevent membrane fouling are also discussed.
Review
Engineering, Environmental
Bin Cui, Chongjun Zhang, Liang Fu, Dandan Zhou, Mingxin Huo
Summary: Climate has impacts on natural landscape, economic productivity, and lifestyles, as well as municipal wastewater treatment. Cold conditions in winter pose challenges to municipal wastewater treatment plants, particularly in cold regions. This review focuses on the challenges faced by 20 municipal WWTPs in Northeast China and explores strategies and research issues related to low temperature conditions. Low temperatures reduce microbial metabolism and lead to exceeding national standards for chemical oxygen demand (COD) and NH4+-N levels. To combat these issues, increasing aeration, reflux volume, and flocculant addition are commonly employed but result in increased electricity consumption. Internationally, research focuses on anaerobic ammonium oxidation (anammox), granular sludge, and aerobic denitrification to overcome low temperature challenges.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2023)
Article
Environmental Sciences
Jian Wang, Yucheng Tian, Jian Wei, Chunjian Lyu, Huibin Yu, Yonghui Song
Summary: This study conducted a long-term experiment using A2O-MBR system to analyze the effect of DBP on bacterial community and their carbon and nitrogen metabolic pathways. The results showed that DBP significantly influenced the structure of bacterial community, resulting in reduced bacterial diversity and decreased COD and TN removal efficiency.
ENVIRONMENTAL RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
In Hwan Shin, Jiyeol Im, SeongJoo Kang, Sang-hun Lee, Ji Won Lee, Kyungik Gil
Summary: The study proposed a unique membrane bioreactor system with sulfonate membrane for simultaneous removal of organic and nitrogen in wastewater. This system consists of two reactors, A and B, with reactor A in anoxic condition and reactor B in aerobic condition. High nitrogen fluxes observed in the system indicated high ion diffusivity, leading to almost complete nitrogen removal efficiency achieved in the batch system. Moreover, no severe nitrate accumulation problem was observed in reactor B, showing the potential for low operation costs and high removal efficiencies of ammonia nitrogen in this unique membrane system.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Chemical
Arvin Sohrabi, Mousa Meratizaman, Shuli Liu
Summary: This paper simulates and discusses possible solutions to improve the economic and technical performances of a battery-less renewable energy-powered BWRO system under real climate conditions. The study finds that the photovoltaic-based system performs better in terms of specific energy consumption and unused energy ratio.
Article
Engineering, Chemical
Chunlan Pan, Xiaoyin Hu, Vishal Goyal, Theyab R. Alsenani, Salem Alkhalaf, Tamim Alkhalifah, Fahad Alturise, Hamad Almujibah, H. Elhosiny Ali
Summary: This paper introduces a novel waste heat recovery method using the hot flue gas from a ship's engine to produce liquefied hydrogen while meeting the ship's air-conditioning requirement. A comprehensive feasibility assessment is conducted and an artificial neural network with a multiobjective grey wolf optimization method is used for optimization. The findings indicate the highest mean sensitivity index of the flash temperature and the best optimization scenario for exergy efficiency, CO2 emission reduction, and liquefied hydrogen cost.
Article
Engineering, Chemical
Daniele Chinello, Jan Post, Louis C. P. M. de Smet
Summary: In this study, PVDF-based anion-exchange membranes were designed to selectively separate nitrate from chloride. Experimental data showed that increasing the concentration of PVDF enhanced nitrate transport but also increased the membrane electrical resistance. The selectivity of nitrate was found to be independent of the membrane thickness and mainly driven by the increased affinity between the anion and the membrane.
Article
Engineering, Chemical
Umar Noor, Muhammad Fayyaz Farid, Ammara Sharif, Amna Saleem, Zubair Nabi, Muhammad Furqan Mughal, Kiran Abbas, Toheed Ahmed
Summary: Global water scarcity is increasing, and water desalination is an important solution. Multifunctional advanced materials, such as membrane materials and solar-driven desalination, play a crucial role in water desalination. Additionally, these materials can be used for water purification, wastewater treatment, and pollutant elimination.
Article
Engineering, Chemical
Emrah Gumus
Summary: With growing global concerns about climate change and environmental impacts, the use of nuclear energy in naval vessels offers a cleaner and more efficient solution to reduce emissions and address water and energy supply challenges. This study explores a novel system that combines a nuclear-driven supercritical carbon dioxide power cycle with reverse osmosis cogeneration to meet the water and electricity demands in maritime operations, enhancing the sustainability, efficiency, and self-sufficiency of naval vessels. The results indicate that the system has the potential to be a viable and effective solution for naval operations.
Article
Engineering, Chemical
Dao Thi Thanh Huyen, Saikat Sinha Ray, Young -Nam Kwon
Summary: This study focuses on the modification of a commercially available polyamide thin-film composite membrane with a zwitterionic material to enhance its fouling resistance. The modified membrane shows improved salt rejection and reduced permeability compared to the pristine membrane. Fouling tests demonstrate that the modified membrane has a lower fouling ratio and higher recovery ratio. The enhanced antifouling characteristics are attributed to the improved hydrophilicity resulting from the zwitterionic brushes and the salting-in effect.
Article
Engineering, Chemical
Niklas Koeller, Lukas Mankertz, Selina Finger, Christian J. Linnartz, Matthias Wessling
Summary: This study presents a methodology to scale up Flow-electrode Capacitive Deionization (FCDI) technology from lab-scale to pilot-scale systems. By increasing membrane area and using a stacking approach, the FCDI modules were successfully scaled up and achieved a salt transfer rate comparable to lab-scale systems. This provides a foundation for future assessments of energy demand and economics.
Article
Engineering, Chemical
Mona Gulied, Sifani Zavahir, Tasneem Elmakki, Hyunwoong Park, Guillermo Hijos Gago, Ho Kyong Shon, Dong Suk Han
Summary: This study introduces a novel hybrid system that combines direct contact membrane distillation (DCMD) and electrically switched ion exchange (ESIX) to facilitate seawater reverse osmosis (SWRO) brine enrichment and selective lithium recovery.
Article
Engineering, Chemical
Zhiqiang Zhang, Ruifeng Deng, Jiao Zhang, Lu She, Guangfeng Wei, Renyong Jia, Pengyu Xiang, Siqing Xia
Summary: A transmembrane electro-chemisorption system with authigenic acid and base was developed for enhancing ammonia recovery from strong ammonia wastewater. The system efficiently transformed ammonium into free ammonia, which was then adsorbed and recovered through transmembrane chemisorption. This system yielded pure (NH4)2SO4 product and produced valuable byproducts of pure hydrogen and oxygen. Higher applied voltage resulted in better ammonia recovery.
Article
Engineering, Chemical
Alena Popova, Sandrine Boivin, Takuji Shintani, Takahiro Fujioka
Summary: This study aimed to produce a high-integrity RO membrane by forming a polyamide skin layer on a TE support layer, in order to enhance the integrity of the membrane and improve the microbiological safety of potable water reuse.
Article
Engineering, Chemical
Sanjana Yagnambhatt, Saber Khanmohammadi, Jonathan Maisonneuve
Summary: This study investigates the concept of using heat to enhance reverse osmosis (RO) desalination. The effect of temperature on water permeate flux, specific energy, permeate quality, and applied operating pressures is evaluated using an analytical model. The results suggest that under specific conditions, the tradeoff between savings in mechanical pump work and thermal energy input in thermally-enhanced RO can be favorable, leading to overall energy savings.
Article
Engineering, Chemical
Jiangju Si, Chenrui Xue, Shun Li, Linchao Yang, Weiwei Li, Jie Yang, Jihong Lan, Ningbo Sun
Summary: To meet the huge demand for lithium resources, there is an urgent need to develop a new efficient technology for lithium recovery from salt-lake brines. In this study, a selective membrane capacitive deionization system is reported, which achieves high lithium recovery capacity and rate through the use of materials with efficient intercalated pseudo-capacitance and a high specific area porous carbon. The use of a modified thin-coated membrane allows for selective Li+ recovery, and adjusting the concentrations of Li+ and Mg2+ in the feed solution enables higher Li+/Mg2+ selectivity.
Article
Engineering, Chemical
Mohamed R. Salem, R. Y. Sakr, Ghazy M. R. Assassa, Omar A. Aly
Summary: This research proposes a new method of using wasted thermal energies as an additional heating source for solar still distillation units (SSDUs) to increase productivity and reduce pollution and global warming. By testing two SSDUs, the study shows that heating airflow can raise temperatures, enhance freshwater production, and improve system thermal efficiency.
Article
Engineering, Chemical
Qimeng Sun, Miao Sun, Linyan Yang, Yuan Gao, Xinghai Zhou, Lihua Lyu, Chunyan Wei
Summary: This study presents an innovative design and fabrication of a fabric-based conical roll (FCR) evaporator, which enables low-temperature evaporation and achieves high evaporation efficiency with excellent thermal management ability. The evaporator has demonstrated advanced light-harvesting capability and can produce freshwater that meets drinking water standards, showing great potential for applications in desalination and sewage treatment.
Article
Engineering, Chemical
Yidong Zhang, Wangfang Deng, Meiyan Wu, Chao Liu, Guang Yu, Qiu Cui, Pedram Fatehi, Chunlin Xu, Bin Li
Summary: In this study, a novel polydopamine-functionalized lignin-containing pulp foam evaporator with high-efficiency desalination and multi-contaminant adsorption capabilities was designed. The foam evaporator showed excellent light absorption, water absorption, thermal conductivity, and chelation abilities, allowing for solar evaporation and contaminant adsorption synergistically. It also exhibited potential applications in metal ion concentration and contaminated seawater treatments, and demonstrated superior biodegradability compared to poly-styrene foam. This foam material holds promise for developing multifunctional photo-thermal systems for solar-driven water purification.