Article
Environmental Sciences
Yu Yu, Yiwei Zhong, Mingyong Wang, Zhancheng Guo
Summary: In the super-gravity field, the dissolution behavior of the aluminum anode changed from pitting corrosion to uniform corrosion, the outer oxidized film of the anode thinned, more Al3+ ions were released, and the mass transfer process of Cl- ions was enhanced by super-gravity, improving the efficiency of the EC process.
Article
Environmental Sciences
Fatemeh Rajaei, Ensiyeh Taheri, Sousan Hadi, Ali Fatehizadeh, Mohammad Mehdi Amin, Nasim Rafei, Saeid Fadaei, Tejraj M. Aminabhavi
Summary: The application of alternating current in electrocoagulation and activation of persulfate (AEC-PS) was evaluated for effective removal of humic acid (HA) from aqueous solution. The highest HA removal efficiency obtained was 99.4% under specific conditions, with factors like pH, reaction time, and current density influencing the process. Radical scavenger tests indicated that both center·OH and SO4 center·- radicals played a significant role in HA removal, with the latter contributing more effectively.
ENVIRONMENTAL POLLUTION
(2021)
Article
Plant Sciences
Sarah Symanczik, Carina Lipp, Paul Maeder, Cecile Thonar, Dominika Kundel
Summary: This study tested the effectiveness of five bioeffectors (BEs) in enhancing maize growth and phosphorus uptake, and found that while BEs in combination with specific P-fertilizers can promote maize growth in the short term, the effects disappear in the long term and under field conditions.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Environmental Sciences
Zhenlian Qi, Teik-Thye Lim, Shane A. Snyder, Shijie You, Faqian Sun, Taicheng An
Summary: This study investigated the impact of Ca2+ on the performance of an iron-based electrocoagulation system and found that an appropriate Ca2+ concentration significantly improved the efficiency of the concomitant electro-Fenton reactions, leading to enhanced degradation of organic pollutants.
Article
Chemistry, Multidisciplinary
Xiongxin Peng, Shuang Gai, Kui Cheng, Fan Yang
Summary: The study conducted hydrothermal humification kinetics experiments using corn straw as raw material and employed characterization techniques such as ultra-performance liquid chromatography, nuclear magnetic resonance spectroscopy, and Fourier-transform ion cyclotron resonance mass spectrometry to determine the formation mechanism of artificial humic substances (A-HS). The results showed that in an alkaline environment, rapid dissociation of lignocellulose can occur, with cellulose and hemicellulose being hydrolyzed into glucose and xylose, further dehydrated to form 5-hydroxy furfural and furfural, and then rehydrated to synthesize levulinic acid and other small molecular acids. These small precursors then combine with lignin fragments to form fulvic acids, humic acids, and even humin. The proposed mechanism of hydrothermal humification is of great significance for the design, synthesis, and application of A-HS in sustainable agriculture.
Article
Engineering, Environmental
B. Rahul Krishna, S. Bhuvaneshwari, Femin Majeed, S. P. Aravind
Summary: The performance and applicability of alloy electrodes derived from Al and Cu combinations were evaluated for dairy wastewater treatment. The study found that the AC10 alloy electrode showed higher efficiency in removing turbidity and COD in dairy effluent, with a shorter reaction time and minimal electrode loss.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Zirui Wang, Xiaowei An, Peifen Wang, Xiao Du, Xiaogang Hao, Xiaoqiong Hao, Xuli Ma
Summary: In this study, aluminum (Al) was used as the sacrificial anode to investigate the Cl- removal mechanism by electrocoagulation. The research showed that electrocoagulation technology can reduce the Cl- concentration in the aqueous solution below 250 ppm, meeting the emission standard. The removal mechanism of Cl- involves co-precipitation and electrostatic adsorption by forming chlorine-containing metal hydroxyl complexes. The current density and plate spacing have an impact on the efficiency of Cl- removal and the operation cost. The coexistence of magnesium ion (Mg2+) promotes Cl- removal, while calcium ion (Ca2+) inhibits it. Coexisting anions such as fluoride ion (F-), sulfate (SO42-), and nitrate (NO3-) affect the removal of Cl- ions through competitive reactions. This work provides a theoretical basis for the industrialization of Cl- removal by electrocoagulation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Patricia Merdy, Jean-Dominique Meunier, Fabio Ziarelli, Yves Lucas
Summary: The chemistry of silicon in the soil-water-plant continuum is not fully understood. Some data suggests that silicon has interactions with natural organic matter, contrary to the widely accepted belief. Batch experiments were conducted to investigate the potential interaction between natural organic matter and silicon, involving different pH and silicon concentrations. The results showed that natural organic matter, specifically humic acid, weakly interacts with silicon alone, but forms a ternary complex with aluminum in the presence of aluminum. These complexes have implications on pedogenesis and the toxicity control of aluminum towards plants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Nazeri Abdul Rahman, Allene Albania Linus, Calvin Jose Jol, Nur Syahida Abdul Jalal, Chieng Kwong Ming, Wan Wafi Shahanney Wan Borhan, Nooranisha Baharuddin, Shaleen Nur Ain Samsul, Nurshazatulaini Abdul Mutalip
Summary: The study investigates the treatment of peat water using a continuous electrocoagulation system with aluminum electrodes. It finds that the variable kinetic order (VOK) model combined with the Freundlich isotherm model is the most suitable for predicting the removal of impurities from peat water. This study demonstrates the effectiveness of using VOK-Freundlich kinetic model in treating peat water with a continuous electrocoagulation system.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Afef Barhoumi, Sana Ncib, Wided Bouguerra, Elimame Elaloui
Summary: This research focuses on the use of rectangular aluminum electrodes to remove nickel from synthetic and industrial wastewater. The study evaluates the effects of electrocoagulation parameters on heavy metal removal and investigates the behavior of nickel during the process. The results show that optimal conditions for maximum nickel removal include a bipolar connection, pH of 5.0, current density of 1.388 mA cm(-2), electrolysis time of 30 minutes, and NaCl concentration of 1.5 g L-1. The process achieves over 95.51% nickel removal with minimal energy consumption of 0.195 kWh m(-3). The economic feasibility of the process is also evaluated, showing its effectiveness in treating industrial wastewater with total nickel removal and low treatment cost. These findings suggest potential industrial applications for this method.
DESALINATION AND WATER TREATMENT
(2022)
Article
Engineering, Chemical
Ehsan Jafari, M. Reza Malayeri, Heike Brueckner, Peter Krebs
Summary: This study investigated the effects of various operating parameters on the removal efficiency of turbidity from synthetic wastewater using electrocoagulation-flotation (ECF) with aluminium electrodes. The optimal conditions for achieving 90% turbidity removal were found to be a current density of 0.0028 A/cm2, an initial pH of 7.3, an operating time of 5 min, and a stirring speed of 500 rpm.
MINERALS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Chao Yang, Lin-Xiao Hou, Bei-Dou Xi, Li-An Hou, Xiao-Song He
Summary: This study investigated the redox capacities of compost-derived humic substances (HS) and their impact on the hematite bioreduction. The results showed that compost-derived HS could promote the bioreduction of hematite and their redox capacities increased during composting. The aromatic functional groups and heteroatom structures, particularly nitrogen, were found to be important for the hematite bioreduction.
CHINESE CHEMICAL LETTERS
(2022)
Article
Agronomy
Liudmila Tripolskaja, Asta Kazlauskaite-Jadzevice, Eugenija Baksiene, Almantas Razukas
Summary: This study aims to investigate the effects of land use on the concentrations of organic carbon, humic acid, and fulvic acid in different soil horizons. The results suggest that converting cropland to fertilized managed grassland can increase soil organic carbon sequestration, while unfertilized managed grassland has a negative impact on humic substances formation. Furthermore, different land use types also influence the types and quantities of humic substances.
Article
Agricultural Engineering
Wenming Zhang, Chenxu Yu, Xujie Wang, Siqian Yin, Xinyi Chang
Summary: This study analyzed the effects of additives on fungal succession during composting and found that biochar and palygorskite promoted the formation of humic substances, with biochar performing better. Sequencing of fungal genes showed that the additives significantly influenced dominant fungi succession, and biochar and palygorskite stimulated the growth of lignocellulose-degrading fungi, leading to more humic acids formation.
BIORESOURCE TECHNOLOGY
(2022)
Article
Plant Sciences
Mi Young Byun, Dockyu Kim, Ui Joung Youn, Seulah Lee, Hyoungseok Lee
Summary: This study evaluated the effects of humic acids (HA) on the growth and photosynthesis of moss species, finding that increasing HA concentrations correlated with increased growth and photosynthesis in polar mosses. However, the efficiency for temperate mosses increased at lower concentrations but began to reduce at the highest HA concentration.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Review
Biochemical Research Methods
Abdelkrim Rebiai, Hadia Hemmami, Soumeia Zeghoud, Bachir Ben Seghir, Imane Kouadri, Laouini Salah Eddine, Noureddine Elboughdiri, Saad Ghareba, Djamel Ghernaout, Nadir Abbas
Summary: This paper provides a concise review of the application of chemometrics in solving the uncertainty of herbal medicine authentication over the past two decades. The results show that these methods have played an important role in the quality control and authentication of herbal medicines.
COMBINATORIAL CHEMISTRY & HIGH THROUGHPUT SCREENING
(2022)
Article
Chemistry, Applied
Babar Azeem, Noureddine Elboughdiri, KuZilati KuShaari, Bassem Jamoussi, Djamel Ghernaout, Saad Ghareba, Shahid Raza, Aicha Gasmi
Summary: In this study, almond shell lignocellulosic bio-waste material was used to produce controlled release urea. The chemical modification of almond shell particles enhanced the coating film's properties. The release rate of urea from the coated product was influenced by spray rate and other process parameters.
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2022)
Article
Engineering, Environmental
Ghulam Abbas Ashraf, Raqiqa Tur Rasool, Rafiqat Ul Rasool, Muhammad Farooq Saleem, Jazib Ali, Djamel Ghernaout, Muhammad Hassan, Ahmed Muteb Aljuwayid, Mohamed A. Habila, Hai Guo
Summary: Heterojunction of MoO3@ZrO2 nanocomposite was found to be more efficient in the catalytic degradation of diclofenac sodium compared to single-metal oxide counterparts. The nanocomposite showed a high degradation rate in simulated light/ PMS, with significantly faster degradation compared to ZrO2 and MoO3. The MoO3@ZrO2 nanocomposite exhibited high stability and recycling capabilities, making it a promising candidate for visible light-based water purification solutions.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
Razika Mecheri, Ammar Zobeidi, Salem Atia, Salah Neghmouche Nacer, Alsamani A. M. Salih, Mhamed Benaissa, Djamel Ghernaout, Saleh Al Arni, Saad Ghareba, Noureddine Elboughdiri
Summary: In this study, a new Kaol/Cel composite was prepared from waste red bean peels as a source of cellulose and demonstrated high adsorption capacity for crystal violet dye. The Box-Behnken design was used to optimize the adsorption process, with the best conditions resulting in 99.86% CV removal and an adsorption capacity of 294.12 mg/g. The Freundlich and pseudo-second-order kinetic models were found to best describe the adsorption behavior. The study also investigated the mechanisms behind CV removal, identifying various types of interactions involved. These findings highlight the potential of Kaol/Cel as a highly efficient adsorbent for cationic dyes in water.
Article
Chemistry, Multidisciplinary
Ammar Zobeidi, Salah Neghmouche Nacer, Salem Atia, Latifa Kribaa, Aicha Kerassa, Abasse Kamarchou, Mousa AlNoaimi, Djamel Ghernaout, Mohamed A. Ali, Abdelmajeed Adam Lagum, Noureddine Elboughdiri
Summary: This study investigates the inhibitory activity of three prepared azo compounds derived from Schiff bases on the corrosion of XC70 steel in (HCl, 1 M DMSO) medium using electrochemical measurements and density functional theory (DFT). The inhibition efficiency is directly related to the concentration. The three azo compounds derived from Schiff bases show maximum inhibition efficiency of 64.37%, 87.27%, and 55.47% for C1, C2, and C3, respectively. Tafel curves indicate that the inhibitors have a mixed but predominantly anodic inhibition system and follow a Langmuir isothermal adsorption process. DFT calculations support the observed inhibitory behavior of the compounds, and there is a strong correspondence between the theoretical and experimental results.
Article
Thermodynamics
Noureddine Elboughdiri, Djamel Ghernaout, Taseer Muhammad, Ahmed Alshehri, R. Sadat, Mohamed R. Ali, Abderrahim Wakif
Summary: A novel electromagnetic hydromagnetic dissipative second-grade nanofluid flow model is proposed to study the dynamics and thermodynamics behavior of copper-based ethylene glycol nanofluids under the influence of a horizontal electromagnetic actuator. The governing partial differential equations and boundary conditions are derived based on physical assumptions and experimental correlations. A robust generalized differential quadrature algorithm is used to solve the resulting ordinary differential equations and boundary conditions, and the influence of various factors on the flow control process and heat transport mechanism is investigated. The graphical results show that the loading process of nanoparticles has different dynamic and thermal impacts compared to the nanoparticles' diameter size, and the resistive dynamical effect of the electromagnetic actuator enhances the role of thermal radiative heat flux and Joule's heating process in the nanofluidic medium.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Raqiqa Tur Rasool, Ghulam Abbas Ashraf, Mohsin Pasha, Muhammad Farooq Saleem, Djamel Ghernaout, Mohammed M. Fadhali, Hai Guo
Summary: A novel and efficient MnSnO2@CsPbBr3 nanocomposite was successfully designed and synthesized for the activation of peroxymonosulfate under light. The nanocomposite exhibited great potential to improve light absorption and enhance the separation and transfer of photoelectron-hole pairs. The MSO@QDs nanocomposite showed high photocatalytic performance in the removal of Flurbiprofen, demonstrating its excellent ability in organic pollutant degradation through photo-oxidation. Computational investigation using the DFT method provided insights into the reactivity of the nanocomposite. This work contributes to the development of high-efficiency and low-cost photocatalysts for wastewater treatment.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Mohamed Heikal, Mohamed A. Ali, Djamel Ghernaout, Noureddine Elboughdiri, Badia Ghernaout, Hazem I. Bendary
Summary: This research investigates the long-term resilience of an environmentally friendly cement blend in a corrosive seawater environment. The findings show that cement incorporating GGBFS exhibits high durability and can withstand challenges in marine environments.
Article
Engineering, Environmental
Raqiqa Tur Rasool, Ghulam Abbas Ashraf, Mohammed M. Fadhali, Sulaiman Al-Sulaimi, Djamel Ghernaout, Moutaz Aldrdery, Abubakr Elkhaleefa, Noor Hassan, Zeeshan Ajmal, Shahzad Afzal, Hai Guo
Summary: Molybdenum carbide (Mo2C), vanadium carbide (VC), and zirconium carbide (ZrC) nanoparticles were studied as photocatalysts for the degradation of naproxen (NX) under visible light. ZrC nanoparticles exhibited higher photocatalytic properties compared to VC and Mo2C nanoparticles. The larger surface area, mesoporous structure, narrow energy bandgap, and lower recombination intensity of ZrC nanoparticles contributed to the enhanced degradation of NX. The excellent durability and reusability of ZrC nanoparticles were also demonstrated.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Adnene Midouni, Anis Chaouachi, Sami Barkaoui, Nejib Abassi, Samir Chakhari, Ammar Mahjoubi, Djamel Ghernaout, Ahmed Hichem Hamzaoui, Muhammad Imran Khan, Noureddine Elboughdiri
Summary: This study describes the enhanced photodegradation of Congo Red dye under visible light irradiation using co-doped ceria (Ce0.7La0.15Ca0.15O2-delta) prepared by colloidal solution combustion synthesis. The as-synthesized ceria nanoparticles were characterized by various techniques revealing their cubic spinel structure, average size between 23 and 92 nm, and bandgap energy from 2.69 to 2.73 eV. The photocatalytic activity of the prepared ceria was evaluated through the photodegradation of CR dye, with the highest degradation rate achieved by co-doped ceria prepared with 1.0 ml of colloidal silica. Based on the results, ceria nanoparticles have potential applications in wastewater cleaning, photocatalyst materials, UV filters, and photoelectric devices.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2023)
Article
Engineering, Environmental
Sara Irki, Edet Albright, Nachida Kasbadji Merzouk, Salah Hanini, Sami Barkaoui, Mhamed Benaissa, Djamel Ghernaout, Noureddine Elboughdiri
Summary: The provinces of Bouzareah and Ghardaia in Algeria are facing water scarcity and drought, despite differences in climatic conditions. This study aimed to design a desalination unit combined with a solar collector to meet the water needs of these provinces. By integrating a model developed in the literature into the simulation environment (TRNSYS), a new component (VMD process) was created. Results showed that Ghardaia had a higher performance in desalination compared to Bouzareah.
Article
Engineering, Chemical
Louiza Sadoun, Karima Seffah, Abdelbaki Benmounah, Abdellatif Zerizer, Djamel Ghernaout
Summary: This study aimed to evaluate the efficiency of Algerian Zean oak (AZO) sawdust for removing methylene blue (MB) without any physico-chemical treatment. By characterizing the physico-chemical properties of the AZO sawdust, the researchers optimized various parameters to achieve an adsorption capacity of 52.376 mg/g. Kinetic data and adsorption isotherms were modeled, revealing that the pseudo-second-order and Sips/Langmuir models best describe the experimental data. The thermodynamic study showed that the adsorption process of MB on AZO sawdust is spontaneous, exothermic, and favorable, highlighting its potential as an efficient and preferred alternative to activated carbon for MB removal.
DESALINATION AND WATER TREATMENT
(2023)
Article
Energy & Fuels
Ali Shawabkeh, Fatemah Alansari, Djamel Ghernaout, Noureddine Elboughdiri
Summary: The hydration process of oil shale ash at different water-to-ash weight ratios was investigated. The physical characteristics, elemental composition of particles, and crystalline phases of the ash hydrate were identified. The hydrated ash was found to contain stratlingite, ettringite, melilite, and calcium silicate hydrates. The formation of cementitious products, particularly CSH, resulted in improved mechanical properties of the hydrated ash.
Article
Construction & Building Technology
Hazem I. Bendary, Mohamed Heikal, Mohamed A. Ali, Djamel Ghernaout, Noureddine Elboughdiri
Summary: The resistance of cement structures to salts is crucial in marine environments. This study investigated the sulfate attack of ordinary Portland cement (OPC) and dealuminated kaolin (DK) blended cement. The results showed that the 7.5% (DK) blended cement exhibited the best sulfate resistant performance.
REVISTA DE LA CONSTRUCCION
(2023)
Article
Engineering, Chemical
Aicha Gasmi, Noureddin Elboughdin, Djame Ghernaout, Ahmed Hannachi, K. S. Abdel Halim, Muhammad Imran Khan
Summary: Electrocoagulation (EC) technique is efficient in removing colors and contaminations in industrial effluents, and the operational parameters significantly affect its performance. This study discusses the mechanisms of contaminant removal from wastewater and the major operating parameters, with a focus on reducing COD and colors. The economic comparison of EC with other alternatives is also conducted for process selection reference.
DESALINATION AND WATER TREATMENT
(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.
