Article
Chemistry, Physical
Tao Lu, Hebin Liang, Wenxuan Cao, Yankang Deng, Qingli Qu, Wenjing Ma, Ranhua Xiong, Chaobo Huang
Summary: Membrane separation is an effective strategy for water treatment, but faces limitations such as poor emulsion separation and membrane fouling. The synergistic treatment technology of adsorption and visible light catalysis can efficiently degrade organic pollutants. The ZIF-8/GO/PAN nanofibrous membrane shows excellent performance in emulsion separation, photocatalytic degradation, antibacterial properties, and biosafety, with great potential for complex wastewater purification.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Chemical
Jue Han, Pan Dai, Chuanyu Gu, Yuan Liao, Yali Zhao, Abdul Ghani Razaqpur, Guangdong Sun, Shuren Chou
Summary: Membrane fouling and draw solution recycle are two important challenges in forward osmosis (FO) process for wastewater treatment. In this study, a corrugated TFC FO membrane (#FO-C) was innovatively designed by interfacial polymerization (IP) on a commercial corrugated PVDF substrate, and fertilizer was used as the draw solution for treating emulsified oily wastewater. The #FO-C membrane exhibited similar performance to the conventional flat TFC membrane (#FO-F), but with lower decrease in water flux in oily wastewater treatment and better recovery through surfactant cleaning and osmosis backwashing. Computational fluid dynamics (CFD) simulation showed that the corrugated pattern of #FO-C reduced fouling deposition on the membrane surface. Additionally, the diluted fertilizer draw solution could be directly used for plant irrigation, achieving draw solution recovery. This work provides a promising strategy for addressing challenges in FO process and has significant reference value.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Chaohui Liu, Junyuan Xia, Jincui Gu, Wenqin Wang, Qingquan Liu, Luke Yan, Tao Chen
Summary: This study successfully developed a composite membrane of CNTs-PAA/MIL101(Fe)@Pt with excellent separation performance and stability for purification of oily waste water and effective separation of oil-in-water emulsions, showing potential applications in practical oily wastewater treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Engineering, Environmental
Sarita Kalla
Summary: This paper discusses the importance of treating oil or surfactant-containing wastewater and introduces the application of Membrane Distillation (MD) technology in treating highly saline wastewater and oil-containing feed streams. It also discusses MD processes, the development of amphiphobic membranes, and the influence of MD operating variables on flux.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Xiaocheng Zhang, Xiangjun Liao, Minghao Shi, Yuan Liao, Abdul Ghani Razaqpur, Xiaofei You
Summary: Membrane wetting and fouling are major challenges in membrane distillation, especially with low surface tension components in the feed. This study developed membranes with different wettability to guide membrane selection for treating these wastewaters. Superhydrophobic and superomniphobic modifications improved anti-fouling/wetting properties when the feeds had anionic and cationic surfactants. However, these modifications worsened membrane performance when the feeds contained nonionic surfactant Tween-20. The hydrophilic layer on Janus membranes showed improvement in anti-fouling/wetting abilities for emulsified oily wastewaters, while the choice of substrate was still important.
Review
Engineering, Multidisciplinary
Nafiu Umar Barambu, Muhammad Roil Bilad, Mohamad Azmi Bustam, Kiki Adi Kurnia, Mohd Hafiz Dzarfan Othman, Nik Abdul Hadi Md Nordin
Summary: The paper reviews recent advances in membrane material development for oil-water separation, focusing on improving surface chemistry, structure, and hydrodynamics to enhance filtration performance over long periods of operation.
AIN SHAMS ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Xueling Wang, Kuo Sun, Guoquan Zhang, Fenglin Yang, Shihong Lin, Yingchao Dong
Summary: The study reports a novel method of efficiently separating oil nano-emulsions using zirconia membranes with sub-100 nm pores and superoleophobic properties. The membrane fouling behavior is dominated by a combined model of intermediate pore blocking and cake filtration, with effective mitigation under high pH conditions. Overall, the zirconia membrane demonstrates high rejection efficiency for nano-sized oil droplets and consistent separation performance for real oily wastewaters.
Article
Engineering, Environmental
Hongmei Wang, Hao Chen, Yibin Hong, Wenxiang Li, Li Guishui
Summary: The effects of operating pressure, feed temperature, oil content of feed solution, and membrane surface flow rate on membrane flux, concentration multiple, and average particle size of oil droplets in the concentrated solution during the single-stage membrane concentration process were investigated. The experimental results show that optimal conditions for single-stage concentration can be determined by increasing the operating pressure, feed temperature, and membrane surface flow rate, and decreasing the oil content of the feed liquid, the concentration ratio, and the average particle size of oil droplets in the concentrated solution. Furthermore, the recovery of oil resources in emulsified oil-containing wastewater can be realized through the combination of different pore size separation membranes in multi-stage membrane concentration.
WATER SCIENCE AND TECHNOLOGY
(2023)
Review
Engineering, Environmental
Amir Hossein Behroozi, Maryam Rostami Ataabadi
Summary: The review presents comprehensive developments in MF process over the past two decades, covering research on different membrane materials, hybrid technologies, and enhancement methods. Future outlook includes the incorporation of nanoparticles with excellent photocatalytic and hydrophilic characteristics in MF membranes for better treatment of oily wastewater on an industrial scale.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Crystallography
Junliang Chen, Qingxin Lv, Qingmei Meng, Xinpeng Liu, Xiaolong Xiao, Xiao Li, Yiyi Liu, Xue Zhang, Peiling Gao
Summary: In this study, alumina ceramic plate microfiltration membranes were used to treat oily wastewater, and the results showed that the system had good oil rejection and permeation flux recovery performance. The concentration of raw oil had a certain impact on the oil rejection rate, but had little effect on the flux change of ceramic membranes.
Article
Engineering, Environmental
Linxin Zhong, Chunyi Sun, Fenglin Yang, Yingchao Dong
Summary: The study presents a waste-to-resource strategy for recycling copper-bearing waste and treating oily wastewater by rational design of spinel ceramic membranes. A spinel phase conversion mechanism was proposed, and spinning and sintering parameters were systematically studied to tailor membrane structure and properties. This approach demonstrates the feasibility of recycling hazardous metal-bearing sludges into functional ceramic membranes for water treatment applications.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Wei Yao, Jian Tan, Xiaodong Zhu, Guanglei Liu, Zhenglong Xu, Mingxin Ye, Jianfeng Shen
Summary: Inspired by leaf structure, a carbon felt/PVA solar-driven device was developed for the separation of versatile oily wastewater. This device exhibits superior solar energy absorption and vapor release capacity, enabling efficient purification of different types of wastewater, including high concentration oil-water emulsions and acidic/alkaline wastewater.
CELL REPORTS PHYSICAL SCIENCE
(2022)
Review
Engineering, Environmental
Abdul Halim, Lusi Ernawati, Maya Ismayati, Fahimah Martak, Toshiharu Enomae
Summary: This paper reviews the current research trend of using cellulose as a membrane material for purifying oily wastewater. It introduces three typical biostructures: superhydrophobic, underwater superoleophobic, and Janus surfaces, and applies their characteristics to improve membrane performance. The study also focuses on the biodegradability and sustainability of cellulose. The principles, mechanisms, fabrication processes, and membrane performances are summarized and compared, and future outlook is discussed.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2022)
Article
Engineering, Environmental
Ao Sun, Yingqing Zhan, Ximin Chen, Hongshan Jia, Fei Zhu, Chunxia Zhao, Yinlong Li, Hui He, Yuanpeng Wu, Tian He, Tingting Hu
Summary: Membrane separation technique is advantageous for treating emulsified oily wastewater, but membrane fouling poses challenges. This study reports a photocatalytic and super-wetting poly (arylene ether nitrile) (PEN) fibrous composite membrane with high permeability and enhanced anti-fouling ability. The membrane shows superior separation flux, efficiency, and photocatalytic self-cleaning ability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Ralph Rolly Gonzales, Lei Zhang, Yuji Sasaki, Wataru Kushida, Hideto Matsuyama, Ho Kyong Shon
Summary: The study developed reduced aliphatic polyketone-based thin film composite membranes for treatment of oily wastewater, showing outstanding water permeability and fouling resistance. It is a suitable oily wastewater treatment process with potential for further development of comprehensively fouling-resistant membranes.
JOURNAL OF MEMBRANE SCIENCE
(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.