Article
Engineering, Environmental
Zhiqiang Xu, Lankun Cai, Xue Liang, Shuguang Lyu
Summary: This study investigated the degradation of trichloroethene (TCE) in the Fe(II)/citric acid (CA) activated persulfate (PS) system with the addition of sodium dodecyl sulfate (SDS) surfactant. The results showed that alkaline condition and the presence of SDS improved the efficiency of TCE degradation in the PS/Fe(II)/CA system. The study also identified the major reactive oxygen species (ROS) responsible for TCE degradation and proposed the possible decomposition pathway of SDS.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Jingyao Huang, Zhengyuan Zhou, Meesam Ali, Xiaogang Gu, Muhammad Danish, Qian Sui, Shuguang Lyu
Summary: This study investigated the remediation technology of citric acid-enhanced Fe(II) activation in sodium percarbonate system for degrading trichloroethene (TCE). The results showed that the addition of citric acid could effectively promote TCE degradation by increasing the generation of hydroxyl radicals, while SDS had an inhibitory effect on TCE degradation. The technique demonstrated great potential for practical application in groundwater remediation.
Article
Engineering, Chemical
Zhiqiang Xu, Lankun Cai, Rumin Yang, Zhengyuan Zhou, Guilu Zeng, Shuguang Lyu
Summary: This study investigates the mechanisms of surfactants in surfactant-in situ chemical oxidation (S-ISCO) for enhanced degradation of perchlorinated organic contaminants. The addition of Tween-80 (TW-80) or sodium dodecyl sulfate (SDS) in Fenton system resulted in a significant improvement in carbon tetrachloride (CT) removal, with TW-80 achieving a removal rate of 97.2% and SDS achieving a removal rate of 91.8%. The study also proposes possible degradation pathways of CT and assesses the impact of different solution matrixes and recovered surfactant solution on CT solubilization and removal.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Marko Pavlovic, Heman Kumar Ramiya Ramesh Babu, Saveh Djalali, Zoran Pavlovic, Milan Vranes, Lukas Zeininger
Summary: A method for visualizing and quantifying surfactant effectiveness in different electrolyte environments using reconfigurable Janus emulsions as optical probes is presented. The effect of different types and concentrations of salt counter-ions on the surfactant surface excess was investigated for both ionic and non-ionic surfactants. It was found that the interfacial tensions of the ionic surfactants varied significantly, while the effect on the non-ionic surfactant was less pronounced. Overall, this study demonstrates the potential of Janus emulsions as powerful tools for studying surfactant properties at liquid interfaces.
Article
Chemistry, Multidisciplinary
Baomin Fan, Xiaoqi Zhao, Peng Zhang, Yi Wei, Ning Qiao, Biao Yang, Razium A. A. Soomro, Ran Zhang, Bin Xu
Summary: In this study, sodium dodecyl sulfate (SDS) is used as an efficient protectant for long-term storage of Ti3C2Tx-MXene aqueous dispersion. Experimental data supports the capability of SDS to protect oxidation-prone sites on Ti3C2Tx nanosheets, providing extended colloidal stability of up to 213 days.
Article
Acoustics
Ayaka Inui, Atsushi Honda, Shohei Yamanaka, Takashi Ikeno, Ken Yamamoto
Summary: This study investigates the mechanism of ultrasonic destruction of microcapsules, finding correlations between frequency and microcapsule destruction rate, and between microcapsule size and cavitation bubble size. The main cause of microcapsule destruction is identified as mechanical resonance, with smaller bubbles potentially destroying microcapsules by applying shear stress locally.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Anup K. Prasad, Chandni Tiwari, Sourav Ray, Stephanie Holden, David A. Armstrong, K. Johan Rosengren, Alison Rodger, Ajay S. Panwar, Lisandra L. Martin
Summary: This study investigates the structural changes of antimicrobial and amyloidogenic peptides in the presence of a membrane mimetic surfactant, sodium dodecyl sulfate (SDS). The results show that the peptides display increased stability and a tendency towards alpha-helical structures in the presence of SDS.
Article
Energy & Fuels
Katipot Inkong, Viphada Yodpetch, Santi Kulprathipanja, Pramoch Rangsunvigit, Praveen Linga
Summary: The effects of co-promoters on mixed methane-THF hydrate formation were investigated, and it was found that the addition of co-promoters reduced the induction time, minimized the length of the first stage formation, and increased the hydrate formation rate. However, certain co-promoters had adverse effects on the final gas uptake and water to hydrate conversion.
Article
Chemistry, Multidisciplinary
Beibei Yang, Tian Qin, Ziping Bao, Wenqian Lu, Jiayu Dong, Duan Bin, Hongbin Lu
Summary: The study focused on synthesizing different Pt-based catalysts using SDS modified-Ti3C2Tx support and investigating its dispersion regulation function on Pt nanoparticles. Results showed that SDS modified-Ti3C2Tx supported Pt nanoparticles had better dispersion and higher electrocatalytic activity and stability in both acidic and alkaline conditions. This suggests that SDS-Ti3C2Tx/Pt catalysts have promising potential applications in fuel cells as a result of modifying the Ti3C2Tx support.
Article
Chemistry, Physical
Shubham Tiwari, Jayant K. Singh
Summary: In this study, all-atom molecular dynamics simulations were conducted to investigate the interfacial and structural properties of the vapor-liquid water interface covered with SDS and divalent salts (CaCl2 and MgCl2). The results showed that the surface tension increases with the rise in divalent salt concentration, but remains constant with NaCl concentration. The presence of divalent salts leads to the displacement of monovalent cations from the interface into the bulk, and the divalent cations preferentially coordinate with the sulfate group of SDS. The escape free energy of divalent cations is higher than monovalent cations, and the interaction with the sulfate head group of SDS follows the order: S-Ca2+ > S-Mg2+ > S-Na+.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Environmental Sciences
Yaqiang Wei, Weijiang Liu, Ling Liu, Haobo Niu, Lu Li, Yuling Chen, Jian Chen
Summary: Monitored natural attenuation (MNA) technology was used to quantify the natural attenuation of carbon tetrachloride contamination in an eastern China polluted site. Results showed that the concentration of carbon tetrachloride in the deep quaternary first aquifer was higher than in the shallow aquifer. The fluctuations in stratigraphy and the heterogeneity of fracture network distribution affected the concentration of carbon tetrachloride.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Food Science & Technology
Ana M. Magallanes Lopez, Senay Simsek
Summary: This study investigated the gluten functionality of commercial wheat flour samples using four proposed diagnostic solvents. The results showed significant positive correlations between the solvents and rheological properties, baking quality traits, protein composition, and dough functionality. These findings highlight the importance of assessing specific flour polymers' contributions to predict end-use potential.
JOURNAL OF CEREAL SCIENCE
(2021)
Article
Engineering, Chemical
Zhao Wei, Wei Sun, Haisheng Han, Guorong Liu, Junhao Fu, Yaowen Xing
Summary: The complex Pb-BHA-SDS was found to have stronger collecting ability and excellent selectivity in scheelite flotation compared to traditional mixed collectors. Adding SDS to Pb-BHA enhanced its adsorption ability on the scheelite surface and improved the hydrophobicity of the collector's nonpolar groups, making Pb-BHA-SDS a more efficient collector at a low dosage.
MINERALS ENGINEERING
(2021)
Article
Engineering, Environmental
Jin Zhu, Yinan Song, Liuwei Wang, Zhuorong Zhang, Jing Gao, Daniel C. W. Tsang, Yong Sik Ok, Deyi Hou
Summary: In this study, a biochar supported iron sulfide composite was synthesized and utilized as a persulfate activator for benzene removal from contaminated groundwater. The system showed excellent performance in benzene adsorption and degradation, with the optimal conditions of 1 g L-1 dosage of the composite and 3 mM PS concentration. The FexSy@biochar exhibited long-term effectiveness for PS activation and could be a sustainable alternative for contaminated groundwater remediation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Analytical
Marko Pavlovic, Heman Kumar Ramiya Ramesh Babu, Saveh Djalali, Milan Vranes, Vasa Radoni, Lukas Zeininger
Summary: A novel method for monitoring mineral content of drinking water using responsive complex emulsions was reported, showing changes in droplet morphology to reflect variations in surfactant effectiveness due to metal cation addition. The study demonstrated that salt concentration and valency can influence the extent of droplet response, with divalent cations resulting in a more pronounced response. This device concept may provide a simple and cost-effective alternative for rapid monitoring of water hardness levels.
ANALYTICAL CHEMISTRY
(2021)
Article
Engineering, Environmental
Yong Sun, Ming Li, Xiaogang Gu, Muhammad Danish, Ali Shan, Meesam Ali, Zhaofu Qiu, Qian Sui, Shuguang Lyu
Summary: The study found that TW-80 was the optimal surfactant for TCE solubilization and degradation. In the presence of 1 g L-1 TW-80, over 97.5% of TCE was removed at the PS/Fe(II)/CA/TCE molar ratio of 30/4/4/1, with more than 86.7% of TCE dechlorinated. The results suggest the potential of the PS/Fe(II)/CA process for actual groundwater remediation in containing TW-80 of TCE contaminant.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Zain Abbas, Waqas Qamar Zaman, Muhammad Danish, Ali Shan, Chenlong Ma, Khuram Shahzad Ayub, Muhammad Tariq, Qicheng Shen, Limei Cao, Ji Yang
Summary: This study investigated the use of cobalt-coupled catalyst in post-plasma catalysis for toluene degradation, and found that the cobalt coupling showed robust performance with up to 99% efficiency. High input power significantly increased toluene degradation, while nonthermal plasma without catalyst produced other VOCs.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Engineering, Environmental
Meesam Ali, Muhammad Tariq, Yong Sun, Jingyao Huang, Xiaogang Gu, Sana Ullah, Muhammad Asif Nawaz, Zhengyuan Zhou, Ali Shan, Muhammad Danish, Shuguang Lyu
Summary: This study revealed the catalytic ability of carbonaceous materials via Fe(III) reduction for trichloroethylene (TCE) removal, with activated carbon and biochar showing high removal efficiency through adsorption and catalytic degradation. Results indicated that acidic pH conditions favored TCE removal, while the presence of HCO3- negatively affected the removal efficiency.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Correction
Engineering, Environmental
Yong Sun, Muhammad Danish, Meesam Ali, Ali Shan, Ming Li, Yanchen Lyu, Zhaofu Qiu, Qian Sui, Xueke Zang, Shuguang Lyu
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Jingyao Huang, Zhengyuan Zhou, Meesam Ali, Xiaogang Gu, Muhammad Danish, Qian Sui, Shuguang Lyu
Summary: This study investigated the remediation technology of citric acid-enhanced Fe(II) activation in sodium percarbonate system for degrading trichloroethene (TCE). The results showed that the addition of citric acid could effectively promote TCE degradation by increasing the generation of hydroxyl radicals, while SDS had an inhibitory effect on TCE degradation. The technique demonstrated great potential for practical application in groundwater remediation.
Article
Engineering, Environmental
Zhengyuan Zhou, Jingyao Huang, Muhammad Danish, Guilu Zeng, Rumin Yang, Xiaogang Gu, Meesam Ali, Shuguang Lyu
Summary: The study demonstrated that the amorphous boron-enhanced Fenton system can effectively accelerate the regeneration of Fe(II) and enhance the degradation rate of organic compounds. By promoting the regeneration of Fe(II) and the generation of HO·, amorphous boron facilitates the efficient removal of DCA. This system can completely dechlorinate DCA and mineralize it into CO2, Cl-, and H2O, showing broad-spectrum reactivity and superiority in the remediation of contaminated groundwater.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Ali Shan, Ayesha Idrees, Waqas Qamar Zaman, Zain Abbas, Usman Farooq, Meesam Ali, Rumin Yang, Guilu Zeng, Muhammad Danish, Xiaogang Gu, Shuguang Lyu
Summary: A novel catalyst of sulfidated iron-nickel supported on biochar (S-FeNi@BC) was synthesized for activating persulfate (PS) to remove trichloroethylene (TCE). The sulfur to iron ratio (S/F) influenced the TCE removal efficiency, with a significant role of sulfur in iron species conversion and recycling of Fe(II) for generating active radical species. EPR and quenching study confirmed the presence and contribution of these radicals, while XPS results demonstrated the dominant role of S(-II) in the PS/S-FeNi@BC system. Overall, S-FeNi@BC shows potential as an effective catalyst for TCE contaminated groundwater remediation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Guilu Zeng, Rumin Yang, Zhengyuan Zhou, Jingyao Huang, Muhammad Danish, Shuguang Lyu
Summary: This study investigated the degradation performance of naphthalene (NAP) in aqueous solution and soil slurry medium using nano zero valent iron (nZVI) combined with citric acid (CA) activation in peroxodisulfate (PDS) and peroxymonosulfate (PMS) oxidation systems. The results showed that NAP could be degraded by 98.1% and 98.9% in the PDS/nZVI/CA and PMS/nZVI/CA systems within 2 hours. In addition, the presence of CA promoted the dissolution of soil minerals and the desorption of NAP from soil medium. The existence of dissolved organic matter (DOM) in soil facilitated the Fe(II)/Fe(III) cycle and electron transfer during NAP degradation.
Article
Engineering, Environmental
Jingyao Huang, Zhengyuan Zhou, Muhammad Danish, Qian Sui, Shuguang Lyu
Summary: This study investigated the effect of synergistic strengthening by citric acid (CA) coupled with micron zero valent iron (mZVI) in Fe(II) catalyzed sodium percarbonate (SPC) system on trichloroethylene (TCE) removal in an aqueous environment with the existence of sodium dodecyl sulfate (SDS). Compared with SPC/Fe(II), SPC/Fe (II)/mZVI, SPC/Fe(II)/CA, and SPC/Fe(II)/CA/mZVI systems, the synergistic strengthening effect by CA and mZVI could maximize TCE removal to 92.0 % and dechlorination of TCE to 88.0 % within 30 min. Furthermore, the synergistic system has the widest pH range of 3-7. The presence of CA and mZVI continuously releases Fe(II) and efficiently promotes the formation of hydroxyl radicals, as well as other reductive radicals such as superoxide radical and carbon dioxide radical. The system shows superiority in the remediation of actual contaminated groundwater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Jingyao Huang, Nan Li, Zhengyuan Zhou, Zhiqiang Xu, Meesam Ali, Guilu Zeng, Rumin Yang, Zhikang Zhou, Muhammad Danish, Shuguang Lyu
Summary: This study investigates the effect of unmodified Fe foam (FF) in catalyzing the removal of trichloroethylene (TCE) using hydrogen peroxide (H2O2), sodium percarbonate (SPC), and calcium peroxide (CP) in an aqueous solution. The results demonstrate that FF has good recycling and stability, making it an innovative and environmentally friendly catalyst. Furthermore, the research confirms that the reaction primarily occurs on the catalyst surface rather than in the solution. Additionally, the study examines the activation effect of FF in multiple H2O2-based oxidant systems and verifies its effectiveness in TCE removal.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Ayesha Idrees, Ali Shan, Muhammad Danish, Waqas Qamar Zaman, Ali Mohsin, Zain Abbas, Jingyao Huang, Tanvir Shahzad, Yong Sun, Zhiqiang Xu, Shuguang Lyu
Summary: This study evaluated the characteristics and catalytic performance of CuFe2O4 synthesized by three different methods, with the solvothermal method showing superior specific surface area and micro-pore volume. The results highlighted the importance of preparation means in determining the catalytic potential of ferrite.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Ayesha Idrees, Ali Shan, Meesam Ali, Zain Abbas, Tanvir Shahzad, Sabir Hussain, Faisal Mahmood, Usman Farooq, Muhammad Danish, Shuguang Lyu
Summary: Polyvinylpyrrolidone coated nano zero valent iron-copper (PVP-nZVI-Cu) bimetallic nanoparticles were successfully synthesized for dechlorination of trichloroethylene (TCE) into non-toxic byproducts in the presence of persulfate oxidant. The system showed significant potential in real groundwater for remediation of TCE contaminated groundwater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Ali Shan, Ayesha Idrees, Waqas Qamar Zaman, Zain Abbas, Meesam Ali, Muhammad Saif Ur Rehman, Sabir Hussain, Muhammad Danish, Xiaogang Gu, Shuguang Lyu
Summary: The study shows that the nZVI-Ni@BC composite material performs well in activating PS to degrade chlorinated contaminants in water, achieving over 99% TCE degradation. The experimental results also indicate that in acidic environments, both SO4·- and OH· radicals play a dominant role in TCE degradation, while high levels of carbonates, bicarbonates, and NOM inhibit the oxidation reaction of TCE.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Meesam Ali, Xiang Zhang, Ayesha Idrees, Muhammad Tariq, Muhammad Danish, Usman Farooq, Ali Shan, Xihao Jiang, Jingyao Huang, Shuguang Lyu
Summary: This study demonstrated the prolonged benefits of the PVA@CP/Fe(II)/nFeS system in the Fenton-like reaction for TCE degradation, showing high efficiency in removing pollutants from groundwater, particularly under acidic conditions. The system also proved to be effective in reducing Fe(III) accumulation and showcased the dominant role of free hydroxyl radicals and the contribution of both free and surface-bound species in different environments. Additionally, the mechanism of regenerated Fe(II) on the nFeS surface was explored through XPS, emphasizing the potential reusability of nFeS and highlighting the viability of the technique in treating TCE-contaminated groundwater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(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)