Article
Environmental Sciences
Abdul Rahim Al Umairi, Zuo Tong How, Mohamed Gamal El-Din
Summary: This study evaluated the dual-function of ferrate as a coagulant and disinfectant for chemically-enhanced primary treatment during wet weather flow (WWF). Linear models were developed to predict the removals of turbidity, TSS, COD, and ortho-phosphate. Ferrate showed better removal of TSS as a coagulant aid added with alum, and exhibited more effective disinfection capacity when used as a coagulant aid and as a disinfectant compared to when used solely as a coagulant.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Maciej Thomas, Przemyslaw Drzewicz, Angelika Wieckol-Ryk, Balamurugan Panneerselvam
Summary: Treatment of carwash wastewater with potassium ferrate (VI) under optimized conditions (pH 3.5, 0.328 g/L K2FeO4, 48 min) resulted in significant reduction of chemical oxygen demand (70.3%), total organic carbon (58.9%), total nitrogen (73.3%), total phosphorus (82.0%), as well as improvement in odor. Compared to FeCl3, potassium ferrate (VI) was more effective in reducing bacterial counts and proteolytic bacteria.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Water Resources
Sharmin Sultana, Boloram Karmaker, A. S. M. Saifullah, Md Galal Uddin, Md Moniruzzaman
Summary: This study aims to identify alternative components that can be used as natural coagulants by using different regional clays as coagulants. The removal efficiency of physical properties, chemical properties, and heavy metals from wastewater was investigated. The results showed that the coastal clay of Patuakhali can be an economically viable coagulant.
APPLIED WATER SCIENCE
(2022)
Article
Engineering, Environmental
Yifan Wang, Ning Wang, Mei Li, Maomao Bai, Hongbo Wang
Summary: This study verified the ability of potassium ferrate to catalyze ozone-driven oxidation of refractory organic matter in wastewater treatment plants. Reduction products of potassium ferrate were found to enhance the ozone oxidation of organic compounds. This suggests that a multistage oxidation system combining potassium ferrate and ozone is technically feasible.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Chemical
Jing Zhao, Wei Jiang, Hesong Wang, Han Zhang, Jinlong Wang, Jiaxuan Yang, Dachao Lin, Heng Liang
Summary: This study presents a ferrate-enhanced electrocoagulation/ultrafiltration (fECUF) system for superior water production, excellent fouling control, and outstanding environmental risk reduction. The system effectively reduces rapid membrane fouling and maintains membrane flux by forming a unique bilayer cake layer. The fECUF system achieves higher removal efficiency of organic substances and antibiotic resistance genes compared to the UF control system.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Nomthandazo Precious Sibiya, Sudesh Rathilal, Emmanuel Kweinor Tetteh
Summary: This study investigated the use of ferromagnetite, alum, and eggshells as cost-effective coagulants for industrial wastewater treatment. The results showed that at optimal dosage and settling time, ferromagnetite was the most effective in removing contaminants from the wastewater.
Article
Engineering, Environmental
Lei Zheng, Huan Feng, Yueqiang Liu, Jinshan Gao, Dibyendu Sarkar, Yang Deng
Summary: Chemically enhanced primary treatment (CEPT) with ferrate(VI) was found to be effective in removing TSS, total COD, and total P from municipal wastewater by forming large-sized aggregates and facilitating sedimentation. Ferrate(VI) also demonstrated substantial removal of recalcitrant dissolved organic phosphorus and inactivation of bacterial indicators during the treatment process. Higher ferrate(VI) dose and weakly alkaline pH conditions were found to be favorable for the performance of ferrate(VI)-based CEPT.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Minh-Trung Dao, Vo-Chau-Ngan Nguyen, Thanh-Nha Tran, Xuan-Du Nguyen, Duc-Thuong Vo, Van-Kieu Nguyen, Le-Thuy-Thuy-Trang Hoang
Summary: Plant-derived coagulants show great potential in wastewater treatment due to their green characteristics and high efficiency, but more research is needed on pilot-scale studies to effectively apply them in real-world scenarios.
JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Environmental
Chun Kang, Yaqian Zhao, Cheng Tang, Olivia Addo-Bankas
Summary: This study aims to explore the use of aluminum-based water treatment sludge as a substitute coagulant in the treatment of animal farm wastewater. The study conducted experiments to optimize the coagulation and flocculation process and found that Al-WTS has considerable removal efficiencies, offering a cost-effective solution for wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Chemical
Peng Tang, Baicang Liu, Wancen Xie, Panpan Wang, Qiping He, Jin Bao, Yongli Zhang, Zhenghua Zhang, Jing Li, Jun Ma
Summary: The study demonstrates that Fe(VI) pretreatment can significantly reduce membrane fouling in treating SGW with UF membrane, improving effluent quality mainly by oxidizing organic matters and enhancing the interaction forces between membrane and foulants.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Munkhtsooj Jargalsaikhan, Jieun Lee, Am Jang, Sanghyun Jeong
Summary: This study investigated the removal of azo dye from textile wastewater effluents using oxidation and coagulation processes. Potassium ferrate was found to be an effective oxidant and coagulant, achieving nearly 100% removal of azo dyes under optimized conditions. Despite its high efficiency, the removal performance decreased at higher pH levels.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Environmental
Fitri Widhiastuti, Linhua Fan, Jorge Paz-Ferreiro, Ken Chiang
Summary: The study demonstrated that Fe(VI) is highly effective in degrading BPA in ROC, with the degradation rate varying with different operating conditions, but showing significant results under specific conditions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Wenrui Shi, Meng Li, Pengyuan Zhang, Chaoyi Qian, Zhengyong Liang
Summary: This study proposed a two-stage oxidation process of combining potassium ferrate and hydrogen peroxide to improve the treatment effect of neomycin sulfate wastewater. The experimental results showed a significant synergistic effect between the two oxidation processes, leading to a higher chemical oxygen demand removal rate, and adjusting the treatment parameters appropriately could maximize the treatment effect.
DESALINATION AND WATER TREATMENT
(2021)
Article
Engineering, Environmental
Moein Besharati Fard, Donya Hamidi, Kaan Yetilmezsoy, Javad Alavi, Fatemeh Hosseinpour
Summary: This study is the first attempt to use Alyssum mucilage as a coagulant for oily-saline wastewater treatment, conducting comprehensive mathematical, kinetic, and statistical analyses to achieve a quantitative definition and optimization of the new coagulant.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Review
Engineering, Environmental
Appanu Sushvanth Reddy, Sarita Kalla, Z. V. P. Murthy
Summary: This article discusses the necessity of developing techniques to convert wastewater and seawater into clean water, as well as the importance and challenges of textile wastewater treatment. Non-conventional separation processes such as membrane distillation play a critical role in textile wastewater treatment, and future research on membrane modification, MD integration, and commercialization will be crucial.
ENVIRONMENTAL ENGINEERING RESEARCH
(2022)
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.