Article
Environmental Sciences
Abdulkarim Almukdad, Alaa H. Hawari, MhdAmmar Hafiz
Summary: In this study, a new electrode configuration was used for electrocoagulation to remove Fe and Mn from primary treated municipal wastewater, achieving high removal percentages. The new electrode configuration reduced the consumption of aluminum electrodes and showed comparable results to simulations done using the COMSOL software.
Article
Environmental Sciences
Yu Yu, Yiwei Zhong, Wanli Sun, Jiajun Xie, Mingyong Wang, Zhancheng Guo
Summary: A centrifugal electrode reactor was designed and applied in the treatment of heavy metal wastewater, which significantly improved the removal efficiency of heavy metals. The analysis showed that the improved performance was due to the dissolution characteristic of centrifugal electrodes and the enhanced diffusion of chloride ions.
Article
Environmental Sciences
Fu Chen, Zafar Iqbal Khan, Asma Zafar, Jing Ma, Muhammad Nadeem, Kafeel Ahmad, Shehzadi Mahpara, Kinza Wajid, Humayun Bashir, Mudasra Munir, Ifra Saleem Malik, Asma Ashfaq, Ilker Ugulu, Yunus Dogan, Yongjun Yang
Summary: The study suggests that the harmful effects of wastewater irrigation on soil and wheat can be controlled, but the high cobalt concentration in wastewater can be toxic to living organisms and pose potential health risks with accumulation over time.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Review
Engineering, Chemical
Pranjal P. Das, Mukesh Sharma, Mihir K. Purkait
Summary: This review paper provides an in-depth assessment of the operational parameters and electrode materials used in electrocoagulation treatment of wastewater, and reviews the recent advancements in reactor designs and optimization studies. It also validates the effectiveness of combining electrocoagulation with other water treatment techniques. Additionally, case studies and economic discussions are included to determine the application prospects of electrocoagulation in wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Engineering, Chemical
Amitesh, Devendra Dohare, Chhaya Rekhate, Abhinesh Kumar Prajapati
Summary: Electrocoagulation is a promising method for treating a variety of wastewater by effectively removing metal or heavy metal, depending on their nature and concentration.
DESALINATION AND WATER TREATMENT
(2022)
Article
Automation & Control Systems
Prince Kumar Rai, Vishav Kant, Rakesh Kumar Sharma, Ankur Gupta
Summary: The study aims to treat textile wastewater through an ultrasonic-assisted electrochemical process and optimize the parameters. The actual removal efficiencies of color, COD, and turbidity were found to be 97%, 66%, and 79% respectively at the optimal operating conditions. The statistical modeling validates that the artificial neural network model outperforms the response surface methodology model in predicting the removal efficiencies of color, COD, and turbidity.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2023)
Article
Chemistry, Multidisciplinary
Daisy Das, Barun Kumar Nandi
Summary: The study focused on using electrocoagulation to treat process water from an iron ore beneficiation plant, successfully removing various metal ions with high efficiency. Ideal operating conditions were identified for effective treatment, leading to significant removal rates while maintaining low energy consumption and operational costs.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Environmental Sciences
F. Ilhan, Y. Avsar, U. Kurt, A. Saral
Summary: Metal plating industry wastewater is highly toxic due to the presence of heavy metals and cyanide. Conventional chemical treatment methods are commonly used, but they result in the generation of hazardous sludge. In this study, a pilot scale electrocoagulation (EC) process was developed as an alternative. The effect of pH adjustment on the removal efficiency of the EC process was investigated, and significant removals of problematic heavy metals such as copper and nickel were achieved.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Minlin Mao, Tingting Yan, Junjie Shen, Jianping Zhang, Dengsong Zhang
Summary: The study demonstrates the efficient removal of heavy metal ions from wastewater through a capacitance-based process of electro-adsorption and electro-reaction coupling. The method achieved a removal efficiency of up to 99% in solutions containing metal nitrates and NaCl, showing great potential for widespread application in wastewater treatment.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Maocai Shen, Yaxing Zhang, Eydhah Almatrafi, Tong Hu, Chengyun Zhou, Biao Song, Zhuotong Zeng, Guangming Zeng
Summary: This study investigated the removal performance, mechanism, and influencing factors of microplastics in wastewater treatment by electrocoagulation (EC). It was found that aluminum anode EC is an effective method to remove microplastics with a removal rate above 80%. The efficiency of microplastic removal by EC is influenced by electrolyte concentration and applied voltage density, with flocculation and charge neutralization occurring simultaneously during the process.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Osama F. Saeed, Khalid W. Hameed, Ali H. Abbar
Summary: In this study, a sequential process of electrocoagulation (EC) followed by electrooxidation (EO) was used to remove the chemical oxygen demand (COD) from wastewater generated in an Iraqi vegetable oil refinery. The effects of operating variables on COD removal in EC were investigated, and a mathematical correlation was developed. The optimum removal efficiency of COD by EC was 69.19% and by EO was 96%. When EC and EO were combined, the total COD removal efficiency was 98.72%.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Applied
Xiaodan Wu, Zihan Wang, Guansong Shao, Bingyang Qin, Ying Wang, Tao Wang, Zhiguo Liu, Yujie Fu
Summary: In this study, a new type of cellulose-based ionic imprinting adsorbent was developed for the selective removal of cobalt ions. The adsorbent exhibited excellent adsorption performance, high cycling stability, and preferential selectivity for cobalt ions. The simple preparation method and promising application prospects make it a promising candidate for water treatment.
REACTIVE & FUNCTIONAL POLYMERS
(2024)
Article
Engineering, Chemical
Run-Feng Chen, Lang Wu, Hai-Tao Zhong, Chao-Xiang Liu, Wei Qiao, Chun-Hai Wei
Summary: By studying electrocoagulation under different conditions, it was found that satisfactory removal efficiencies can be achieved under specific operational parameters such as iron anode, 2.0 cm inter-electrode distance, and 30 mA/cm2 current density. Electrocoagulation also leads to the formation of fluorescent substances, increasing the biodegradability of wastewater, which facilitates subsequent biological treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Mohamed A. Ganzoury, Saloumeh Ghasemian, Nan Zhang, Matt Yagar, Charles-Francois De Lannoy
Summary: The study investigated the use of an electrochemical oxidation-in-situ coagulation (ECO-IC) process for efficient treatment of mixed industrial wastewater contaminated with heavy metals and organic pollutants. The process successfully degraded organic contaminants and precipitated heavy metals in the solution. ECO-IC shows promise as an effective pre-treatment method for coagulating heavy metals in real industrial wastewaters.
Article
Environmental Sciences
Ahmad Shahedi, Ahmad Khodadadi Darban, Ahmad Jamshidi-Zanjani, Mehdi Homaee
Summary: This review article discusses the application of a new method, electrocoagulation, for mine wastewater treatment and its advantages and weaknesses in metal recovery. The method has advantages such as simplicity, environmental friendliness, and low cost, but also has limitations that restrict its use.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Chemistry, Physical
Navid Noor Mohammadi, Elmira Pajootan, Hajir Bahrami, Mokhtar Arami
JOURNAL OF MOLECULAR LIQUIDS
(2018)
Article
Polymer Science
Mehdi Rahimdokht, Elmira Pajootan, Marziyeh Ranjbar-Mohammadi
POLYMER INTERNATIONAL
(2019)
Article
Environmental Sciences
Mahsa Mohseni, Somaye Akbari, Elmira Pajootan, Firuzmehr Mazaheri
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Biochemistry & Molecular Biology
Marziyeh Ranjbar-Mohammadi, Mehdi Rahimdokht, Elmira Pajootan
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2019)
Article
Engineering, Chemical
Kamran Jalali, Elmira Pajootan, Hajir Bahrami
ADVANCED POWDER TECHNOLOGY
(2019)
Article
Engineering, Environmental
Abdollah Gholami Akerdi, S. Hajir Bahrami, Elmira Pajootan
JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING
(2020)
Article
Chemistry, Physical
Emmanuel Onyekachi Nwanebu, Xiaocheng Liu, Elmira Pajootan, Viviane Yargeau, Sasha Omanovic
Summary: The study found that thermally prepared Ni0.6Co0.4-oxide can be used for the electrochemical degradation of organic pollutants like methylene blue. The electrode showed good electrocatalytic performance in the degradation of organic pollutants, especially in the presence of chloride ions.
Article
Physics, Applied
Elmira Pajootan, Minnan Ye, Muyang Zhang, Sogol Niroumandrad, Sasha Omanovic, Sylvain Coulombe
Summary: In this study, multi-walled carbon nanotubes (MWCNTs) directly grown on a stainless steel mesh were functionalized using a fast, solvent-free radiofrequency (RF) plasma technique. The functionalized MWCNT electrodes showed improved capacitive behavior, particularly the MWCNT electrode functionalized with the RF plasma employing the Ar/C2H6/O-2 gas mixture at 20 W for 15 min, which achieved the highest capacitance.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Elmira Pajootan, Sylvain Coulombe, Sasha Omanovic
Summary: 3D porous electrocatalysts with low platinum loading were synthesized using gas-phase pulsed laser ablation, showing higher methanol oxidation current and lower loss of active sites compared to commercial Pt/C. Increasing the electrolyte temperature significantly improved the efficiency of the electrocatalysts.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Hanie Kazari, Elmira Pajootan, Pascal Hubert, Sylvain Coulombe
Summary: This study successfully deposited ruthenium nitride on a stainless-steel mesh substrate using a novel dry fabrication method. The method eliminates toxic byproducts and the need for binders, making it ideal for flexible supercapacitor electrodes. Experimental results showed a significant improvement in capacitance of the synthesized ruthenium nitride-multiwalled carbon nanotube electrode, with a large potential window.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Elmira Pajootan, Sammie Amin Alolabi, Sasha Omanovic, Sylvain Coulombe
Summary: This study presents the fabrication and characterization of novel multilayered electrocatalyst nanostructures for the oxygen reduction reaction (ORR). Thin titanium oxynitride (TiOxNy) coatings are deposited on multi-walled carbon nanotubes (MWCNTs) grown on a stainless-steel mesh, followed by coating with dispersed Pt nanoparticles (NPs). The resulting electrodes show high activity in the ORR, with Pt/TiOxNy-0.03 Torr-30 W/MWCNT exhibiting the best performance.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Engineering, Chemical
Navid Noor, Elmira Pajootan, Parisa Mirzaei, S. Hajir Bahrami
Summary: A Cu/PAMAM/MWCNT/rGO complex was synthesized and used to fabricate an electrochemical sensor for simultaneous detection of nitrate and nitrite ions as inorganic contaminants, as well as 4-chlorophenol and 1,2,5,8 tetrahydroxy anthraquinone as organic pollutants. The synthesized electrode was characterized using various techniques, and cyclic voltammetry was performed to study the influence of solution pH, anion concentration, and scan rate on the analytical performance. The sensitivity and detection limits for the simultaneous determination of nitrate/nitrite ions were 8.030 x 10(-3) and 5.370 x 10(-3) mu A mu M-1 mm(-2), and 0.081 and 0.115 mu M, respectively. For the simultaneous determination of 4-chlorophenol/1,2,5,8 tetrahydroxy anthraquinone, the sensitivity and detection limits were 0.0105 and 9.399 x 10(-3) mu A mu M-1 mm(-2), and 0.062 and 0.070 mu M, respectively.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Review
Materials Science, Multidisciplinary
Ladan Eskandarian, Elmira Pajootan, Amirali Toossi, Hani E. Naguib
Summary: Long-term continuous health care monitoring using wearable technologies is gaining attention for its significant contribution to disease diagnosis and health condition identification. Fiber-based electrodes, integrated into smart textiles and wearables, offer advantages such as breathability, flexibility, and durability for continuous biosignal monitoring. This review summarizes recent breakthroughs in the design and manufacturing of dry fiber-based electrodes for electrophysiology applications, with a focus on electrocardiography, electromyography, and electroencephalography. Current limitations and future development prospects, including electroactive fiber materials, fiber processing, electrode fabrication, scaled-up manufacturing, and standardization of testing and performance criteria, are also discussed.
ADVANCED FIBER MATERIALS
(2023)
Article
Energy & Fuels
Hanie Kazari, Elmira Pajootan, Mark Sowa, Sylvain Coulombe, Pascal Hubert
Summary: Plasma-enhanced atomic layer deposition of ruthenium on functionalized carbon nanotubes eliminates the need for binders and toxic by-products. The electrodes show improved capacitance and low charge transfer resistance when compared to bare carbon nanotubes. The 3D flexible electrodes exhibit high capacitance and retention after cycling and bending tests.
JOURNAL OF ENERGY STORAGE
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Steven Walker, Gareth Price, Elmira Pajootan, Sylvain Coulombe
Summary: Nonthermal plasma-catalytic processes are being explored as an alternative to the energy-intensive Haber-Bosch process for ammonia synthesis, with a focus on achieving a more environmentally friendly and efficient production. Nanocatalysts, plasma excitation, and gas mixing are key components, with reaction kinetics serving as the coupling factor.
2021 IEEE 16TH NANOTECHNOLOGY MATERIALS AND DEVICES CONFERENCE (NMDC 2021)
(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.
