Article
Environmental Sciences
Wentian Li, Yanpeng Li
Summary: A novel surface modification method combining Fenton treatment and ultrasonic was proposed to selectively separate polycarbonate (PC) from acrylonitrile-butadiene-styrene (ABS) and polyvinylchloride (PVC) through froth flotation. Under the optimum conditions, the recovery and purity of PC exceeded 97.97% and 99.18%, respectively. The introduction of oxygen-containing groups induced by surface modification made the PC surface more hydrophilic, facilitating its recycling.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2022)
Article
Engineering, Environmental
Zhiyi Wang, Hongru Jiang, Yingshuang Zhang, Kai Bian, Hui Wang, Chongqing Wang
Summary: The mismanagement of waste electrical and electronic equipment (WEEE) has led to the accumulation of discarded plastics in the natural environment, which can further undergo aging, breaking, and migration, becoming a significant source of microplastics. This study proposes an advanced and sustainable flotation method using polymeric aluminum chloride (PAC) modification to separate different types of plastics. The results show that PAC treatment effectively improves the separation efficiency of plastics and has potential for resource recovery and microplastic pollution prevention.
Article
Engineering, Chemical
Jincheng Ran, Yuepeng Li, Menghan Zong, Huabing Xu, Man Jiang, Enxia Gao, Zhiguo Zhang
Summary: Although low-temperature plasma has been proven to be effective for mineral modification, its application to the pulp system has not been reported. In this study, surface dielectric barrier discharge (SDBD) low-temperature plasma was introduced into the pulp through a bubble generator, and its modification mechanism on arsenopyrite and pyrite was investigated. The results showed that SDBD plasma exhibited excellent selectivity, with much less hydrophilic oxidation products on the surface of plasma-modified pyrite compared to arsenopyrite. The introduction of plasma into the pulp resulted in a longer residence time of the pulp chemistry of arsenopyrite in the stable oxidation region compared to pyrite. Plasma modification significantly enhanced the oxidation degree of the defect area on the surface of arsenopyrite, leading to a decrease in its hydrophobicity and hindering the adsorption of collector and the oxidation of xanthate ions into dixanthogen. Due to its environmentally-friendly property, SDBD plasma modification has a broad application prospect in the flotation separation of polymetallic sulfide ores.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Dong Wang, Xuanyi Chen, Yong Hua, Zhi Wang, Changming Liu, Zhankui Wang, Guoyu Qian
Summary: In this study, the effective separation of micro Si/SiC in silicon sawing waste was achieved through the hydrophilic modification of Si particles. Wet oxidization process was found to play a key role in enhancing the wettability of Si particles by coating them with an amorphous oxide layer containing hydroxy groups. The wet oxidization also ensured the desired contact angle for SiC, enabling successful flotation separation.
MINERALS ENGINEERING
(2023)
Article
Environmental Sciences
Linxi Tang, Chunhua Zhang, Jinyan Peng, Ying Ge
Summary: In this study, a Sb sorbent was prepared using yeast powder modified with potassium permanganate. The effects of solution pH, sorbent amount and contact time on Sb(V) removal were investigated. The results showed that Sb(V) could be adsorbed on the 0.5 Mn-Y through complexation with MnOx and reduction to Sb(III) followed by binding to functional groups.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Chemistry, Inorganic & Nuclear
Shahin Ghobadi, Babak Samiey, Arezoo Ghanbari
Summary: The study investigated the adsorption and reaction process of MnO4- ions on the surface of MoS2, as well as the factors influencing this process. Experimental results showed that MoS2 had high MnO4- adsorption capacity in water, and the adsorption and reaction mechanisms varied slightly under different pH conditions.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Engineering, Environmental
Layla Gripon, Imane Belyamani, Benoit Legros, Karine Seaudeau-Pirouley, Eric Lafranche, Laurent Cauret
Summary: This study investigates the extraction of brominated flame retardants from real waste electrical and electronic equipment using supercritical carbon dioxide. The results show that sc-CO2 extraction is an efficient technique, with no degradation effect on the polymer matrix observed.
Article
Energy & Fuels
Zhenlin Mo, Qingliang Shi, Honghu Zeng, Ze Lu, Jianhong Bi, Hua Zhang, Jorg Rinklebe, Eder C. Lima, Audil Rashid, Asfandyar Shahab
Summary: The modified eucalyptus biochar by potassium permanganate showed improved adsorption capacity for Cd removal compared to unmodified biochar. The adsorption process followed pseudo-second-order kinetics and Langmuir isothermal adsorption model, with oxygen-containing and manganese-containing groups on KBC playing a key role in the complexation, oxidation, and cation-pi electron interaction for Cd(II) removal.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Chemistry, Physical
Xingcai Yu, Peilun Shen, Zhengdao Yin, Liang Wang, Han Wang, Dianwen Liu
Summary: This study investigates the activation mechanism of surface modification of malachite using 2,5-Dimercapto-1,3,4-thiadiazole (DMTD). The results show that DMTD can enhance malachite flotation recovery and affect the adsorption of butyl xanthate (BX) by promoting the formation of a hydrophobic and stable copper-sulfide species on the malachite surface.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Green & Sustainable Science & Technology
Enis Esmaili, Babak Samiey, Chil-Hung Cheng
Summary: Experimental results demonstrate the excellent adsorption capacity of Co-Al-LDH for MnO4- ions and show that the adsorption process follows specific mechanisms under different conditions.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Jing Li, Xin Hu, Juan Wang, Li Yin, Youru Yao, Yong Zhang, Huan He, Shaogui Yang, Lixiao Ni, Shiyin Li
Summary: This study used potassium methyl silicates (PMS) as surface modifiers to improve the aggregation of colloidal particles and enhance the oxidation of bisphenol A (BPA) by Mn (VII). PMS provided sufficient adsorption sites and reaction space, and formed hydrophobic PMS-MnO2 complexes which accelerated sedimentation. This method solved the low efficiency problem of Mn (VII) oxidation degradation and difficult separation of manganese containing colloids.
Article
Multidisciplinary Sciences
Zhiqiang Chen, Yanhong Wang, Liqun Luo, Tiefeng Peng, Feng Guo, Mingyu Zheng
Summary: The study investigated the separation effects of sodium polyacrylate (PAAS) and gum Arabic (GA) on the flotation of chalcopyrite and magnesium silicate minerals. It was found that the combination of PAAS and GA as depressants could effectively reduce the recoveries of serpentine and talc minerals while maintaining a high recovery rate for chalcopyrite. Chemical reactions between PAAS and magnesium on the serpentine surface, as well as physical adsorption and hydrogen bonding of GA on talc surface, were observed.
SCIENTIFIC REPORTS
(2021)
Article
Polymer Science
Charles Signoret, Pierre Girard, Agathe Le Guen, Anne-Sophie Caro-Bretelle, Jose-Marie Lopez-Cuesta, Patrick Ienny, Didier Perrin
Summary: The incorporation of polypropylene (PP) into ABS plastics can lead to various issues, which can be improved by adding compatibilizers; the Response Surface Methodology can be used to evaluate the impact of extrusion temperature and screw speed on the impact resistance of the ABS + 4 wt% PP system.
Article
Chemistry, Physical
Han Wang, Shuming Wen, Guang Han, Qicheng Feng
Summary: In this study, the sulfidization mechanism of malachite was investigated by pretreating with Pb(NO3)2 and analyzing the results of microflotation experiments, zeta-potential determination, adsorption tests, XPS, and ToF-SIMS. The results demonstrated that pretreatment with lead ions significantly improved the floatability of malachite, increasing the maximum recovery by 42.6% compared to Na2S treatment. The interaction between Pb species, S species, and O species on the mineral surface led to the enhancement of malachite sulfidization.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Jing Cao, Jing Yang, Dandan Wu, Ziang Wang, Huiqin Chen
Summary: The effect of ammonium carbamate on sulfide flotation of hemimorphite was investigated in this study. The results demonstrated that the addition of ammonium carbamate increased the flotation recovery of hemimorphite by enhancing the adsorption of sulfide ions and improving the hydrophobicity of the mineral surface.
APPLIED SURFACE SCIENCE
(2022)
Review
Chemistry, Physical
Hongbo Gu, Wenhao Xie, Ai Du, Duo Pan, Zhanhu Guo
Summary: This review summarizes the common features, synthesis methods, and research progress of electrode materials used in the electrocatalytic process for the treatment of antibiotics in the last five years. The removal mechanism and transformation pathways of antibiotics in the electrocatalytic oxidation and reduction processes are presented, while considering the cost aspect and proposing several developing directions for further research.
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Mengying Lian, Jiaxin Sun, Dawei Jiang, Miaojun Xu, Zijian Wu, Ben Bin Xu, Hassan Algadi, Mina Huang, Zhanhu Guo
Summary: In this work, a self-powered system based on a triboelectric-electromagnetic hybrid pipeline energy harvesting module is demonstrated. Rabbit fur and PTFE are used as triboelectric electrodes to fabricate disk-type soft-contact TENGs to collect the mechanical energy of water flow and convert it into electrical energy. The hybridization of electromagnetic generator module and TENGs module to form TEHNG can improve the electrical output performance, especially the current output, and enable simultaneous energy harvesting and data monitoring in harsh environments.
Article
Engineering, Electrical & Electronic
Bikram Prasad, Akanksha S. Chougale, Sandesh R. Jadkar, Nithesh Naik, Habib M. Pathan
Summary: In this study, CdS quantum dot-sensitized ZrO2 photoanodes were analyzed using the successive ionic layer adsorption and reaction (SILAR) method at 300 K. The addition of a compact layer and the ZnS treatment of the prepared photoanode were investigated for improving solar cell performance. X-ray diffraction analysis indicated that the ZrO2 films had a nano-crystalline structure with an average particle size of 39.14 nm. The CdS-sensitized ZrO2 films exhibited enhanced photon absorption in the visible range (200-520 nm) with increasing SILAR cycles. Poly-sulphide electrolytes were prepared using double distilled water and carbon black soot as a cost-effective counter electrode. The J-V characteristics of the CdS/ZrO2 photoanode with a compact layer of TiO2 and surface passivation by ZnS treatment showed a maximum J(sc) of 1.46 mA/cm(2), a fill factor of 0.34, and a conversion efficiency of 0.46%. Electrochemical impedance spectroscopy was performed to understand the charge transfer and transport mechanisms in the quantum dot-sensitized solar cell.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Plant Sciences
Nansheng Wang, Huguang Chen, Yingzhi Qian, Zhaojie Liang, Guiqiang Zheng, Jun Xiang, Ting Feng, Min Li, Wei Zeng, Yaling Bao, Erbao Liu, Chaopu Zhang, Jianlong Xu, Yingyao Shi
Summary: In this study, 137 indica accessions were re-sequenced, and a genome-wide association study (GWAS) was conducted using the best linear unbiased prediction (BLUP) values for six agronomic traits. Significant associations were found between 195 single nucleotide polymorphisms (SNPs) and the six traits. Candidate genes for the target traits were identified within 100 kb upstream and downstream of the relevant SNP loci based on genome-wide linkage disequilibrium (LD) blocks. Six quantitative trait loci (QTLs) were identified for haplotype analysis, including two previously known QTLs and four novel QTLs. These candidate genes were further validated through haplotype block construction.
Article
Materials Science, Multidisciplinary
Shixuan Feng, Futian Zhai, Huahua Su, Deepak Sridhar, Hassan Algadi, Ben Bin Xu, Rami Adel Pashameah, Eman Alzahrani, Hala M. Abo-Dief, Yong Ma, Tingxi Li, Zhanhu Guo
Summary: This article summarizes the classification and preparation methods of metal organic frameworks (MOFs) derived materials, as well as their wave absorption mechanisms. It also details the advantages and disadvantages of these materials in electromagnetic wave absorption research and provides a reference for further studies.
MATERIALS TODAY PHYSICS
(2023)
Article
Materials Science, Composites
Xinming Ye, Zhiqing Han, Panpan Tian, Tong Liu, Xiangning Meng, Chengke Yuan, Wensheng Wang, Yingchun Li
Summary: Cu-Ph-POSS was synthesized by grafting Cu into Si-O-Si cage, and used to solve the problem of black smoke generated during combustion of epoxy resin (EP) in high fire safety fields. The incorporation of 2 wt% Cu-Ph-POSS into EP significantly improved thermal stability and reduced peak heat release rate (p-HRR), peak smoke production rate (p-SPR), and peak CO production rate (p-COP) by 56.8%, 44.4%, and 59.4%, respectively. The presence of polycyclic aromatic and Si-C compounds in the interior char layers effectively inhibited the release of heat, smoke, and toxic volatiles, imparting superior flame retardant and smoke suppression performances to the fabricated EP composites.
COMPOSITES COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Dheeraj Kumar Maurya, Ragupathy Dhanusuraman, John Zhanhu Guo, Subramania Angaiah
Summary: In this study, a nanofillers-reinforced 3D-electrospun nanofibrous hybrid polymer membrane (ESHPM) was prepared by electrospinning technique to overcome the challenges of poor thermal stability and low ionic conductivity in an electrolyte. The ESHPM exhibited excellent properties such as morphology, porosity, crystallinity, thermal stability, dimensional stability, operating potential window, and ionic conductivity. This research offers a potential solution for developing high-performing sodium-ion capacitors (NICs) with high energy and power densities.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Agriculture, Multidisciplinary
Hang Shu, Yongfeng Li, Jerome Bindelle, Zhongming Jin, Tingting Fang, Mingjie Xing, Leifeng Guo, Wensheng Wang
Summary: The study aimed to build machine learning models using comprehensive variables to predict physiological responses of dairy cows raised on an actual farm equipped with sprinklers. Four algorithms were used to predict respiration rate, vaginal temperature, and eye temperature, and the artificial neural network model showed the best performance. The results demonstrate the ability of the artificial neural network in predicting physiological responses of dairy cows with access to sprinklers.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2023)
Review
Agriculture, Multidisciplinary
Yaowu Wang, Sander Mucher, Wensheng Wang, Leifeng Guo, Lammert Kooistra
Summary: Within precision livestock farming, three-dimensional computer vision is used to improve growth monitoring in cattle management. This systematic review investigates the implementation of three-dimensional computer vision in cattle growth management by collecting and analyzing 47 eligible studies. The results show that the body measurements assessment task contributes to other three-dimensional cattle growth tasks, and the most frequently applied approach for three-dimensional data acquisition is using Kinect sensors fixed at nadirs to obtain dorsal features. This review provides insights into three-dimensional computer vision in cattle growth management and discusses the potential of building an automatic and successive three-dimensional multi-task cattle growth monitoring management system.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2023)
Article
Plant Sciences
Guogen Zhang, Zhiyuan Bi, Jing Jiang, Jingbing Lu, Keyang Li, Di Bai, Xinchen Wang, Xueyu Zhao, Min Li, Xiuqin Zhao, Wensheng Wang, Jianlong Xu, Zhikang Li, Fan Zhang, Yingyao Shi
Summary: By utilizing genome-wide association and epistasis analysis (GWAES), the genetic basis of rice saline-alkali tolerance was studied. A total of 165 main-effect quantitative trait nucleotides (QTNs) and 124 additional epistatic QTNs were identified, explaining a significant portion of the phenotypic variation of saline-alkali tolerance. Most of these QTNs were located in genomic regions associated with saline-alkali tolerance or known genes. The finding of candidate genes and favorable haplotypes provides valuable information for genetic improvement of rice saline-alkali tolerance.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Chaopu Zhang, Min Li, Jessica Domingo Rey, Ting Feng, Renee Lafitte, Tianqing Zheng, Yamei Lv, Fengcai Wu, Binying Fu, Jianlong Xu, Fan Zhang, Wei Zeng, Erbao Liu, Jauhar Ali, Wensheng Wang, Zhikang Li
Summary: This study aims to develop rice varieties with good tolerances to drought and submergence. By screening and genetic characterization, 124 introgression lines with improved submergence tolerance (ST) were identified out of 260 lines selected for drought tolerance (DT). The results provide valuable insights into the complex cross-talks between different phytohormone-mediated signaling pathways and the strategy of selective introgression for multiple complex traits.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Dentistry, Oral Surgery & Medicine
Karishma S. Talreja, Shobha J. Rodrigues, Umesh Y. Pai, Thilak Shetty, Sharon Saldanha, M. Mahesh, Puneeth Hegde, Satish B. Shenoy, Nithesh Naik, Sandipan Mukherjee, Ann Sales, Vignesh Kamath, Prashant Bajantri
Summary: This study evaluated the stress distribution in short dental implants with different implant-abutment connections using finite element analysis. The results showed that splinting of short implants resulted in reduced and more uniform stress and microstrain, especially under oblique loading. The microstrain values for all connections evaluated were within the safe range for clinical use.
INTERNATIONAL JOURNAL OF DENTISTRY
(2023)
Article
Chemistry, Physical
Haoran Ye, Yang Shi, Ben Bin Xu, Zhanhu Guo, Wei Fan, Zhongfeng Zhang, Daniel M. Mulvihill, Xuehua Zhang, Pengju Shi, Ximin He, Shengbo Ge
Summary: BC-CaCl2, an innovative and environmentally friendly wood-based material, developed from natural pinewood, with high-density cross-linking structure and excellent properties, represents a viable alternative to petrochemical-based materials.
Article
Engineering, Chemical
Junhua Li, Lingshu Gao, Junmao Hong, Xiaofeng Shi, Sifang Kong, Jingyu Wang, Hassan Algadi, Benbin Xu, Zhanhu Guo
Summary: Terephthalic acid reformed Al/Zn metal organic nanoflake functionalized with trie-thylamine (T-AlZn) exhibits remarkable performance in removing trace lead (II) ions (Pb2+), with an adsorption equilibrium reached within 35 min and a removal rate ≥ 97%. After four regenerations, the decline in removal rates of T-AlZn for Pb2+ is only 16.73%. The adsorption of T-AlZn for Pb2+ follows the Langmuir isotherms model and pseudo-second-order dynamics model, with the utmost adsorption competence of 215.27 mg g-1. T-AlZn adsorbent shows a bright prospect in the adsorption for Pb2+ and is a considerable candidate in the disposal of industrial sewage.
Article
Chemistry, Multidisciplinary
Kai Zhang, Xiangyi Liu, Jiajun Bi, Amal BaQais, Ben Bin Xu, Mohammed A. Amin, Ying Hou, Xianglong Liu, Handong Li, Hassan Algadi, Juan Xu, Zhanhu Guo
Summary: Bimetallic NiCe/Lay catalysts were prepared and achieved a conversion rate of oleic acid of 100% and a hydrocarbon selectivity of 92.77%.
NEW JOURNAL OF CHEMISTRY
(2023)
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)
