Article
Engineering, Environmental
Q. Q. Cai, B. C. Y. Lee, S. L. Ong, J. Y. Hu
Summary: The fluidized-bed Fenton (FBR-Fenton) process has gained attention for treating industrial wastewater, combining the effectiveness of Fenton synthesis and sludge reduction. Challenges include high consumption of Fenton reagents and strict pH control, but strategies for overcoming these limitations are being discussed for improving cost-effectiveness. Modeling techniques like computational fluid dynamics and artificial neural networks show promise for accelerating the full-scale application of FBR-Fenton technologies.
Article
Engineering, Environmental
Titikshya Mohapatra, Prabir Ghosh
Summary: This study explored the potential of thermally modified laterite soil as a catalyst in the fluidized bed photo-Fenton process for treating textile wastewater. The results showed that the catalyst significantly reduced the total organic carbon (TOC) content in the wastewater and exhibited high catalytic stability. The fluidized bed photo-Fenton approach has low operating costs and low environmental impact, making it a feasible option for treating wastewater of different colors.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Yue Zhang, Gaofeng Zhu, Mingqiao Ge
Summary: The CuxMnxFe3-2xO4/MWCNT nanocomposites were prepared using a co-precipitation method, showing increased catalytic activity with successful loading of metal oxides on MWCNTs. These nanocomposites demonstrated efficient degradation of PVA wastewater and maintained good catalytic capacity even after multiple reuse cycles.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Electrochemistry
Mengqiong Zhang, Jun Yan, Dong Wang, Xiaoli Dong, Hongchao Ma, Huangzhao Wei, Guowen Wang
Summary: The COVID-19 pandemic has accelerated the development of wastewater purification technologies, such as electro-Fenton. Through careful investigation, we have found that a Fe-doped ZnO electrode can achieve a Faradaic efficiency of 78% for H2O2 electrogeneration at a voltage of 3.2 V vs. RHE, and maintain a current density of 10 mA cm(-2) for at least 6 hours. This electrocatalytic process can generate hydroxyl radicals, which can be used for the treatment of contaminated water. Additionally, this electrode system can effectively remove microbial contamination, with a killing rate of up to 99%.
ELECTROCHIMICA ACTA
(2023)
Article
Environmental Sciences
Cagla Calik, Deniz Izlen Cifci
Summary: The study investigates the treatment of textile industrial wastewater through Fenton and Photo-Fenton oxidation processes. It was found that Photo-Fenton oxidation process is more effective than Fenton process in terms of achieving higher organic matter and color removal with less chemical usage at a lower total cost.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Chemistry, Physical
Tetiana Tatarchuk, Nazarii Danyliuk, Ivanna Lapchuk, Wojciech Macyk, Alexander Shyichuk, Roman Kutsyk, Volodymyr Kotsyubynsky, Volodymyra Boichuk
Summary: Fenton oxidation with a heterogeneous hematite catalyst in a fixed bed reactor has been studied for water disinfection. The hematite catalyst exhibits good chemical stability and catalytic activity in decomposing H2O2, inactivating E. coli bacteria, and degrading oxytetracycline. The efficiency of bacterial inactivation and oxytetracycline removal increases with the concentration of H2O2.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Environmental
Liang Sun, Han Jiang, Yuxuan Zhao, Xiaoyan Deng, Shen Ke, Yan Li, Minge Tian
Summary: The study evaluated the fluidized-bed Fenton (FBF) process as a tertiary treatment for the effluent from an industrial wastewater treatment plant, focusing on the removal of soluble iron using different carriers. The results showed that the pH and molar ratio of [Fe2+][H2O2] were essential variables affecting the performance of the FBF process, with an adaptive pH range of 2.5 to 7.4. However, high pH led to reduced iron removal efficiency due to homogeneous nucleation. Increasing the molar ratio of [Fe2+]/[H2O2] improved removal performances, but excess iron addition had a negative effect. An actual engineering project demonstrated the effectiveness and cost-efficiency of the FBF process for tertiary treatment.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Engineering, Environmental
Sie Alain Hien, Clement Trellu, Nihal Oturan, Alain Stephane Assemian, Bi Gouesse Henri Briton, Patrick Drogui, Kopoin Adouby, Mehmet A. Oturan
Summary: This study investigated the effects of different treatment methods on textile industry wastewater and found that combining EF with a BDD anode can efficiently remove TOC in a short period of time, while AO is more effective in controlling the formation of degradation by-products. A trade-off between TOC removal and the formation of toxic by-products should be considered during the treatment process.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Sie Alain Hien, Clement Trellu, Nihal Oturan, Alain Stephane Assemian, Bi Gouesse Henri Briton, Patrick Drogui, Kopoin Adouby, Mehmet A. Oturan
Summary: This study compared the generation of oxidants in a heterogeneous way and a homogeneous way for the treatment of textile industry wastewater. Both approaches achieved high TOC removal, with the electro-Fenton process being faster and more efficient for effluent discoloration, and the anodic oxidation process more effective in limiting the formation of degradation by-products. An advantage of anodic oxidation was its ability to treat alkaline effluent without pH adjustment. However, using a boron-doped diamond anode led to high concentrations of ClO3-/ClO4- formation, which poses a challenge for effluent treatment. By comparison, the electro-Fenton process with a Pt anode significantly reduced the formation of ClO3-/ClO4-. Further research is needed to find a balance between TOC removal and the formation of toxic chlorinated by-products.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Aicha Gasmi, Soumaya Ibrahimi, Noureddine Elboughdiri, Mohamed Aymen Tekaya, Djamel Ghernaout, Ahmed Hannachi, Abdelhakim Mesloub, Badreddine Ayadi, Lioua Kolsi
Summary: This study compares the performance and operating cost of chemical coagulation (CC) and electrocoagulation (EC) methods in treating textile wastewater. The experimental data shows that both methods are effective in removing pollutants from the wastewater, with EC achieving higher reduction efficiencies. Although EC has a higher operating cost, the treated water meets the standards for discharge and has potential for reuse in various industries.
Article
Environmental Sciences
Fehmiye Gul Tokay Yilmaz, Gulen Tekin, Gulin Ersoz, Suheyda Atalay
Summary: Wastewater management is crucial for sustaining biological life in the future. This study focused on combining photo-Fenton-like oxidation and adsorption to improve the water quality of textile wastewater for reuse. The operational parameters were optimized and it was found that adsorption was necessary to make the treated water reusable in terms of organic content.
ENVIRONMENTAL POLLUTION
(2023)
Article
Green & Sustainable Science & Technology
Jinwei Xu, Xueli Zheng, Zhiping Feng, Zhiyi Lu, Zewen Zhang, William Huang, Yanbin Li, Djordje Vuckovic, Yuanqing Li, Sheng Dai, Guangxu Chen, Kecheng Wang, Hansen Wang, James K. Chen, William Mitch, Yi Cui
Summary: The study demonstrates a method of catalytically activating H2O2 to generate hydroxyl radicals using Cu single atoms, which operates stably at pH 7.0 without the need for external energy input, providing a new approach for wastewater treatment.
NATURE SUSTAINABILITY
(2021)
Article
Engineering, Environmental
Nonglak Boonrattanakij, Suppakarn Kruthom, Ming-Chun Lu
Summary: This study successfully removed wastewater containing the insecticide IMI using a fluidized-bed Fenton process, achieving a degradation efficiency of 97% for IMI under specific conditions. Bed expansion did not significantly affect IMI degradation but slightly deteriorated total iron removal performance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Rafael Covarrubias-Del-Toro, Marisol Huerta-Rocha, Luis Lezama, Edith Xio Mara Garcia, Arturo Estrada-Vargas
Summary: Carbon-based electrodes are widely used for the electrogeneration of H2O2, essential for mineralizing organic compounds in wastewater. Calcination at high temperatures enhances the cathodic and anodic functions of carbon cloth electrodes, significantly increasing the oxidation current and H2O2 production. This study investigated the effect of calcination at 300 and 600 degrees Celsius on the oxidation current and H2O2 production.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Environmental Sciences
Nouha Bakaraki Turan, Hanife Sari Erkan, Fatih Ilhan, Guleda Onkal Engin
Summary: This study compared the color removal efficiencies of four different cathodic electrode materials in the electro-oxidation process of textile wastewater. By optimizing parameters, the best treatment conditions for each electrode material were determined and operational costs were calculated.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Reyson M. Feliciano, Benny Marie B. Ensano, Mark Daniel G. de Luna, Cybelle M. Futalan, Ralf Ruffel M. Abarca, Ming-Chun Lu
Summary: Desulfurization of liquid fuels is essential to reduce the emission of sulfur oxides and particulates during fuel combustion. In this study, the desorption mechanism of sulfur from neutral activated alumina saturated with dibenzothiophene sulfone was investigated, with batch experiments showing that acetone had superior desorption efficiency compared to other eluents. The desorption kinetics followed a pseudo-second-order equation with chemisorption as the rate-determining step, and thermodynamics study revealed the spontaneous and endothermic nature of sulfur desorption using acetone as eluent. Overall, neutral activated alumina was proven to be an efficient and reusable adsorbent for sulfur compound removal from liquid fossil fuels.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Agricultural Engineering
Tanissorn Buakaew, Chavalit Ratanatamskul
Summary: A novel anaerobic baffled biofilm-membrane bioreactor (AnBB-MBR) was developed to treat industrial liquor condensate. Different reactor configurations were evaluated to minimize membrane fouling rates, with the fixed film and moving bed configurations reducing fouling by 48.9% compared to the no-media configuration.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Nathaniel E. Quimada, Mark Daniel G. De Luna, Anabella C. Vilando, Ming-Chun Lu
Summary: This study investigates the removal and recovery of copper and nickel ions from synthetic PCB wastewater using a fluidized-bed homogeneous granulation process (FBHGP). The research found that high removal and granulation efficiency can be achieved under different operating conditions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Thammananya Sakcharoen, Chavalit Ratanatamskul, Achara Chandrachai
Summary: A novel integrated bioreactor system provides energy recovery and wastewater treatment, achieving zero-waste discharge through anaerobic co-digestion; Experimental results show that the system has good technical performance and economic feasibility, contributing to sustainable development.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Pyae Phyo Kywe, Chavalit Ratanatamskul
Summary: This study investigated the feasibility of enhancing ammonia recovery from wastewater using a negatively charged PTFE membrane in a DCMD system. The results showed that H3PO4 solution was the most suitable permeate solution, and increasing the concentration of H3PO4 and the feed pH significantly improved ammonia recovery.
Article
Green & Sustainable Science & Technology
Ittipat Vipusanapat, Chavalit Ratanatamskul, Achara Chandrachai
Summary: This study aimed to develop a green supermarket evaluation model and provide empirical evidence on its relationship with the green process, green output, and green supermarket. The data included a survey of 190 supermarket branches in Bangkok, Thailand, and interviews with green supermarket management specialists. The findings revealed a three-level model with two elements, nine major indicators, and 101 sub-indicators for evaluating green supermarkets.
Article
Chemistry, Multidisciplinary
Pyae Phyo Kywe, Chavalit Ratanatamskul
Summary: The main waste stream from the textile industry is its wastewater with high color, organic matters, and other contaminants. This study investigated the effect of humic acid on the treatment performance and permeate flux of a direct contact membrane distillation (DCMD) system. The results showed that increasing humic acid concentration led to higher fouling resistances and decreased flux. A mathematical model based on the Antione equation was proposed to predict the membrane flux decline.
Review
Green & Sustainable Science & Technology
Jui-Yen Lin, Erica A. Garcia, Florencio C. Ballesteros, Sergi Garcia-Segura, Ming-Chun Lu
Summary: Carbon capture, utilization, and storage (CCUS) technologies are being developed to mitigate CO2 emissions and address global warming and climate change. Chemical precipitation plays a crucial role in enhancing the performance, energy-efficiency, and profitability of CCUS. Controlled precipitation helps reduce energy demand, stabilize CO2 as solid carbonates, and manipulate the morphology of calcium carbonate for better utilization and environmental benefits.
SUSTAINABLE ENVIRONMENT RESEARCH
(2022)
Article
Engineering, Chemical
Chavalit Ratanatamskul, Tiennalin Romskul
Summary: A hybrid system of the inclined-tube/oxidation ditch-membrane bioreactor (IT/OD-MBR) was developed and its performance and stability for biological nutrient removal and permeate flux were investigated. The results showed that the system achieved high removal efficiencies of COD, ammonia, and phosphorus over 90%, 90%, and 80%, respectively, with a minimum horizontal flow velocity of 0.2 m/s. It was also found that lipid was the predominant foulant of microbial EPS. For long-term operation, a minimum horizontal flow velocity of 0.3 m/s was recommended for stable permeate flux and nutrient removal performance. The treated effluent from the proposed hybrid IT/OD-MBR system met the water reuse guideline for landscape and gardening purposes.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Multidisciplinary Sciences
Piyathida Khantibongse, Chavalit Ratanatamskul
Summary: This research investigated three integrated enzymatic hydrolysis approaches, including boiled hot water pre-treatment with enzyme, alkaline pre-treatment with enzyme, and acid pre-treatment with enzyme, for monosaccharide production from rice straw waste. The study found that boiled hot water pre-treatment with commercial cellulase enzyme resulted in the highest total monosaccharide yields, with glucose being the main component. Overall, the integrated enzymatic hydrolysis with boil hot water pre-treatment was the most efficient method for monosaccharide production from rice straw waste.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
C. S. Shalumon, Chavalit Ratanatamskul
Summary: A simplified, efficient, and sustainable method for extracting microplastic particles from face scrub and laundry wastewater was developed in this study. The method showed a high extraction efficiency and easy operation.
SCIENTIFIC REPORTS
(2023)
Article
Green & Sustainable Science & Technology
Elias W. Gabisa, Chavalit Ratanatamskul, Shabbir H. Gheewala
Summary: Plastic waste is a major environmental problem due to its high generation rate and low recycling rate. This study quantified the potential environmental benefits of recycling commonly used polymers, including reducing greenhouse gas emissions, microplastic pollution, and resource depletion. The results showed that recycling can significantly reduce GHG emissions, microplastic emissions, and resource depletion. However, mechanical recycling, which is currently commercialized, can actually increase microplastic pollution. Other mechanisms, such as capturing emitted microplastics or employing chemical recycling, are needed to effectively reduce microplastic emissions.
Article
Environmental Sciences
Tanissorn Buakaew, Chavalit Ratanatamskul
Summary: A novel anaerobic baffled biofilm-membrane bioreactor with microaeration (AnBB-MBR) was developed to enhance VFA and nitrogen removal from building wastewater. Microaeration significantly improved microbial richness and diversity, leading to better removal of acetic acid and dissolved methane. The integration of microaeration with sludge recirculation further enhanced NH4+-N removal. Membrane fouling was minimized in the AnBB-MBR system with microaeration.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
Corazon Alaba Virtudazo-Ligaray, Mark Daniel G. de Luna, Angelo Earvin Sy Choi, Ming Chun Lu
Summary: Desulfurization technology is important for removing sulfur from fuel, and the CeO2-WOx-TiO2 catalyst synthesized in this study showed promising results in oxidative desulfurization of fuel oil at lower temperature and pressure.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2023)
Proceedings Paper
Green & Sustainable Science & Technology
Thanwarhat Sodkomkham, Chavalit Ratanatamskul, Achara Chandrachai
Summary: This study successfully applied an integrated management system to increase production efficiency and reduce costs by reducing water consumption, which helps promote the green development of Thailand's industrial manufacturing sector.
2020 8TH INTERNATIONAL CONFERENCE ON ENVIRONMENT POLLUTION AND PREVENTION (ICEPP 2020)
(2021)
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
