Review
Chemistry, Multidisciplinary
Mohammed Benjelloun, Youssef Miyah, Gulsun Akdemir Evrendilek, Farid Zerrouq, Sanae Lairini
Summary: The increased environmental awareness and tighter regulatory standards have led various industries to seek appropriate wastewater treatment technologies for colored wastewater. This review provides detailed information on dyes, their classification, the environmental impact of water pollution, and the use of adsorption technology as a sustainable solution for dye removal. Studies evaluating the effectiveness of different adsorbents, particularly low-cost ones, in removing dyes from aqueous solutions are highlighted.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Environmental
Chen Zhou, Ermias Gebrekrstos Tesfamariam, Youneng Tang, Ang Li
Summary: This study quantifies the contributions of adsorption, bioreduction, and desorption in EPS-mediated U(VI) immobilization. Experimental results show that U(VI) immobilization is faster when exposed to H-2 compared to O-2. The kinetic model reveals that adsorption is dominant in the first minute, bioreduction is dominant from the second minute to the 50th minute, and after 50 minutes, bioreduction is balanced by desorption. This study also provides the first set of equilibrium data for U(VI) adsorption by EPS alone and shows that U(VI) adsorption onto EPS is endothermic, spontaneous, and favorable at higher temperatures.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2023)
Article
Water Resources
Santosh Singh, Himanshu Gupta, Soniya Dhiman, Nawal Kishore Sahu
Summary: This study successfully demonstrated the removal of brilliant green dye from aqueous medium using activated carbon prepared from waste banana peels. The adsorption of dye was found to be exothermic, spontaneous, and favorable, indicating potential for treatment of wastewater contaminated with brilliant green and other toxic pollutants.
APPLIED WATER SCIENCE
(2022)
Article
Polymer Science
Somayeh Rahdar, Abbas Rahdar, Mostafa Sattari, Laleh Divband Hafshejani, Athanasia K. Tolkou, George Z. Kyzas
Summary: Dyes are hazardous industrial pollutants, and effective removal from wastewater is crucial. A BaFe12O19/CoFe2O4@PEG nanocomposite showed high efficiency in removing Acid Blue 92, with a maximum of 77.54% removal at pH 2. Adsorption isotherm and kinetic data fit well with models, especially the pseudo-second order and Freundlich isotherm models.
Article
Biochemistry & Molecular Biology
Hemant Mittal, Ali Al Alili, Pranay P. Morajkar, Saeed M. Alhassan
Summary: The study synthesized graphene oxide crosslinked nanocomposites hydrogels of chitosan and carboxymethyl cellulose as versatile adsorbents for both cationic and anionic dyes contaminated wastewater. The adsorption process was well explained using pseudo-second-order and Langmuir models, with excellent regeneration capacity demonstrated for continuous cycles of adsorption-desorption. The synthesized CS/CMC-NCH showed great potential for effective treatment of dye-contaminated wastewater.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Physical
Farishta Shafiq, Chenyu Liu, Hengjun Zhou, Hailiang Chen, Simiao Yu, Weihong Qiao
Summary: In this study, controlled hollow mesoporous hydroxyapatite (HM-HAP) particles were successfully prepared and their excellent adsorption performance was verified through dye adsorption experiments.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Review
Polymer Science
Vipin Malik, Laishram Saya, Drashya Gautam, Shallu Sachdeva, Neelu Dheer, Dinesh Kumar Arya, Geetu Gambhir, Sunita Hooda
Summary: This review focuses on the efficiency of tamarind-based nanocomposites as potential adsorbents for various harmful organic and inorganic water pollutants. It provides a comprehensive analysis of the fabrication routes, adsorption isotherms, kinetic and thermodynamic modeling, as well as the adsorption mechanism and recyclability of these adsorbents. Factors affecting the adsorption behavior and a comparison with other nanomaterials are also discussed. Based on the literature surveyed, there is great potential for future research on tamarind-based nanocomposites as low-cost biomaterials in water purification.
Article
Environmental Sciences
Marcela Paredes-Laverde, Diego F. Montano, Ricardo A. Torres-Palma
Summary: The presence of dyes and pharmaceuticals in natural waters is becoming a global concern. In this study, the potential of montmorillonite (MMT) as an adsorbent for the removal of various dyes and pharmaceuticals from water was evaluated. The adsorption capacity of MMT was found to be influenced by attractive forces between the contaminants and MMT, and adsorption isotherms and kinetics were well described by Langmuir and pseudo-second-order models, respectively. The findings demonstrated that MMT can efficiently remove certain contaminants through electrostatic attractions and hydrogen bonding.
Article
Chemistry, Physical
Qingchun Chen, Zitong Bao, Wenjie Wan, Lu Li, Huiyu Deng
Summary: In this study, monodisperse carbon microspheres (CMSs) with different diameters were prepared from glucose under controllable hydrothermal conditions. The synthesized CMSs were characterized and their adsorption performance was evaluated. The results showed that the adsorption capacity of CMSs could be enhanced by UV and/or visible light irradiation, with smaller diameter CMSs exhibiting better performance.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Environmental Sciences
Masahiro Umehara, Yoshiaki Kumamoto, Kenta Mukai, Akira Isogai
Summary: The adsorption isotherms, kinetics, and thermodynamics of fluoride ions (F-) on FeOOH powders in water were studied. The results showed that FeOOH/TOCN powder is an excellent and efficient F- adsorbent in water. The adsorption of F- on FeOOH initially formed a monolayer through physical adsorption, and the adsorption kinetics followed the pseudo-second-order model. The thermodynamic analysis indicated that the adsorption process was spontaneous in water.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Santosh Kumar Sriramoju, Pratik Swarup Dash, Saptarshi Majumdar
Summary: The novel adsorbent prepared from lignite extraction waste showed effective removal of toxic pollutants in coking wastewater. The activated carbon from low ash residue exhibited a mesoporous surface with high adsorption capacity and efficiency. Through reutilization studies, regenerated adsorbent by thermal treatment can be used for multiple cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Biotechnology & Applied Microbiology
Jian Feng, Li Wang, Xia Ran, Bo Xiao, Li Lei, Jinming Zhu, Rong Li, Xiaolan Xi, Guangwei Feng
Summary: This study constructed a 3/g-C3N4 heterojunction by incorporating perovskite ErFeO3 nanoparticles into mesoporous g-C3N4 nanosheets, which exhibited optimal adsorption and photocatalytic performance for the removal of low concentration antibiotic contaminants. The ultrathin and porous structure of the nanosheets increased the specific surface area and reaction active sites, while the heterojunction accelerated the separation of charge carriers and inhibited recombination. This research provides an efficient alternative for the treatment of antibiotic wastewater through the synergistic effect of adsorption and photocatalytic degradation.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Chemistry, Physical
Vartika Srivastava, Abhay Kumar Choubey
Summary: A novel type of polymer beads, CS/CuO nanocomposite beads, were prepared by incorporating CuO nanoparticles into chitosan beads, showing enhanced efficiency in removing organic dyes from aqueous solutions. The adsorption process followed pseudo first order kinetics and the equilibrium could be related to the Freundlich model. The nanocomposite beads displayed 100% recovery rate and could be reused up to 5 cycles.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Inorganic & Nuclear
Sebastitian Pizarro, Michael Araya, Vivian Garcia, Alvaro Delgadillo
Summary: The Cobaloxime [Co(dpgH)2Cl(INA)] compound was synthesized and its electrochemical behavior and adsorption equilibrium on nanocrystalline titanium dioxide thin films were studied. The addition of NaBH4 resulted in the appearance of new bands in the visible spectrum, which were attributed to metal-to-ligand charge transfer. Theoretical calculations supported this explanation.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Tatiana C. Almeida, Jessica N. Cunha, Eliane D'Elia, Oscar Rosa Mattos
Summary: This article critically evaluates the literature on the use of the Langmuir isotherm in inhibitor research. The validity of the Langmuir isotherm has been challenged, particularly by Walczak et al. (2019), leading to its rejection by some researchers. Imposing limitations on the Langmuir isotherm would affect heterogeneous kinetics, impedance interpretation, and other transient techniques. This discussion paper provides a more in-depth analysis of these aspects.
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.