Article
Engineering, Environmental
Jinwen Hu, Huabo Gong, Xu Liu, Jinming Luo, Nanwen Zhu
Summary: Converting waste activated sludge into catalysts for the removal of antibiotics in water fulfils the dual purpose of waste-to-resource and hazardous pollution elimination. In this study, sludge-derived biochar (SDB) for efficient periodate (PI) activation was prepared without additional modification. The SDB-PI system degraded OFL effectively and was unaffected by inorganic ions or humic acids. The study provided a cost-effective strategy for developing SDB-based catalysts and advancing the comprehension of sludge management and RIS formation in PI-advanced oxidation processes.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Liuyang He, Lixin Lv, Suresh C. Pillai, Hailong Wang, Jianming Xue, Yongfei Ma, Yanli Liu, Yulin Chen, Li Wu, Zulin Zhang, Lie Yang
Summary: Iron/copper bimetallic nanoparticles based sludge biochar (Fe/Cu-SBC) was successfully prepared and applied for the activation of periodate to degrade diclofenac sodium. The catalytic efficiency of Fe/Cu-SBC system was improved under optimized conditions, showing great potential for the degradation of pharmaceuticals and personal care products (PPCPs) in wastewater.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Weihua Xu, Xuemei Zheng, Zichen Shangguan, Jing Qu, Wei Zhang
Summary: In this study, manganese ferrite (MnFe2O4) was used to activate periodate (PI) to remove ciprofloxacin (CIP) from water, achieving a high removal efficiency. Fe(II)/Fe(III) and Mn(II)/Mn(III)/Mn(IV) conversions facilitated the degradation of CIP, forming singlet oxygen (1O2), iodate radical (IO3•), and superoxide radical (O2•−) as primary active substances. The MnFe2O4/PI system showed good tolerance to different water sources and selectivity towards different antibiotics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Chunyu Du, Shengjiong Yang, Dahu Ding, Tianming Cai, Rongzhi Chen
Summary: This study uncovered the synergistic effect between biochar and soil active minerals in the activation of peroxymonosulfate (PMS). The mineral-biochar composites exhibited notable synergistic effects in BPA removal, possibly due to the improvement in electron transfer mechanism.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Tingting Yang, Yingming Xu, Qingqing Huang, Yuebing Sun, Xuefeng Liang, Lin Wang
Summary: In this study, two functional biochar materials were prepared and demonstrated to be effective in removing Cd from water and stabilizing Cd in alkaline soil, thus reducing the risk of Cd entering the food chain.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Liuyang He, Shangding Yang, Shitai Shen, Yongfei Ma, Yulin Chen, Jianming Xue, Jia Wang, Li Zheng, Li Wu, Zulin Zhang, Lie Yang
Summary: In this study, a novel heterogeneous ultrasonic-enhanced sludge biochar activated periodate system was developed to remove levofloxacin from water. The results showed that ultrasonic and sludge biochar effectively enhanced the activation of periodate, leading to high removal efficiency of levofloxacin and reduced ecotoxicity of the treated solution.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Qiong Wu, Chunying Dong, Maoxiang Chen, Yu Zhang, Meiqiang Cai, Yan Chen, Micong Jin, Zongsu Wei
Summary: SiO2-composited biochar decorated with Fe/Mn was prepared as a catalyst for degrading tetracycline. Under optimal conditions, the reaction rate constant reached 0.0264 min(-1), 12 times higher than the system without catalyst. The presence of silica also improved the stability of the catalyst. This environmentally friendly catalyst offers a potential solution for pollutant removal in water.
Article
Engineering, Environmental
Fawen Liang, Zhang Liu, Xueding Jiang, Jiesen Li, Kaibang Xiao, Weicheng Xu, Xin Chen, Jinzhi Liang, Zhifeng Lin, Meng Li, Xiaolian Wu, Hailong Wang
Summary: In this study, a NaOH-modified biochar supported Fe/Mn bimetallic composite (Fe-Mn/AW-BC) was prepared to remove tetracycline (TC) through activating peroxymonosulfate (PMS). The results showed that Fe-Mn/AW-BC + PMS system had a rate constant 37 times higher than the BC + PMS system, with about 97.9% of TC degraded. The Fe-Mn/AW-BC system exhibited wide pH usability and broad-spectrum adaptability towards various organic pollutants and water environments.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Pengyu Xiao, Xianliang Yi, Minghuo Wu, Xue Wang, Simeng Zhu, Bixia Gao, Yang Liu, Hao Zhou
Summary: Biochar obtained from pyrolysis of anaerobic sewage sludge without pretreatment can be effectively used for PI activation, with the best activation achieved at 800 degrees C. The activation of PI is highly pH-dependent, showing the highest AO7 removal rate at pH 3.0. The SBC-800/PI system has demonstrated anti-interference capacity with common wastewater components and can be reused, with singlet oxygen production and electron transfer being the dominant AO7 oxidation mechanisms.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Kai-Qiang He, Chun-Gang Yuan, Yang-Hong Jiang, Xue-Lei Duan, Yan Li, Meng-Dan Shi
Summary: Fe-Mn binary oxides show synergistic effect in arsenic removal in flue gas, with strong and stable adsorption ability, oxidizing As(III) to As(V) for efficient removal. This oxidation not only enhances removal capacity of arsenic compounds, but also reduces the toxicity of captured arsenicals.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Engineering, Environmental
Lidong Kou, Jing Wang, Liang Zhao, Kai Jiang, Xinxin Xu
Summary: The study demonstrated that the use of KMnO4 as a chemical conditioner improved the dewatering efficiency of waste sludge, while also facilitating the incorporation of Mn oxides into biochar catalysts. The resulting Mn,Fe-codoped catalysts showed efficient activation of peroxymonosulfate for complete removal of phenolic contaminants, highlighting their potential in organic degradation applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Geochemistry & Geophysics
Andre Jorge Pinto, Nuria Sanchez-Pastor, Raul Santos Jorge
Summary: This study focuses on the textural, mineralogical, and chemical analysis of iron-manganese ores from a vein-hosted deposit in the Iberian Pyrite Belt, SW Portugal. The research identifies the different Fe and Mn phases present in the enriched ores, explores their chemical composition, and defines the mineral paragenetic pathway. The study demonstrates that changes in Eh/pH conditions can lead to goethite dissolution and the formation of various Mn oxides and secondary goethite through electrochemical reactions between Fe2+ and Mn4+.
Article
Engineering, Chemical
Lijun Niu, Lili An, Kaiting Zhang, Qian Chen, Xin Yu, Menglu Zhang, Mingbao Feng
Summary: This study presents a novel treatment technology, the Mn(VII)/PI system, which can rapidly and efficiently degrade organic micropollutants without producing toxic byproducts. The transformation pathways of the contaminants are determined. This technology has great potential for various applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Liuyang He, Shangding Yang, Lie Yang, Yulong Li, Dejin Kong, Li Wu, Zulin Zhang
Summary: This study prepared sludge biochar at different pyrolysis temperatures and used it to activate periodate for the degradation of sulfamethoxazole. The results showed that higher pyrolysis temperatures resulted in increased adsorption capacity and activation ability of sludge biochar, leading to enhanced degradation of sulfamethoxazole.
Article
Environmental Sciences
Jiamin Gong, Honghui Jiang, Xiang Li, Hao Cheng, Ziqi Wang, Jingju Cai, Meifang Li, Ping Wang, Hui Wang, Xi Hu, Xinjiang Hu
Summary: In this study, manganese oxide/biochar composites were synthesized and their ability to activate periodate for degrading dyes was investigated. The results showed that the composites successfully loaded manganese oxide on the surface of biochar, increasing the number of surface functional groups. The composites exhibited high performance in degrading methylene blue and other pollutants, and the optimal technological parameters were determined using response surface methodology.
ENVIRONMENTAL RESEARCH
(2024)
Article
Agricultural Engineering
Jiayi Tang, Yongfei Ma, Chenyu Zeng, Lie Yang, Song Cui, Suli Zhi, Fengxia Yang, Yongzhen Ding, Keqiang Zhang, Zulin Zhang
Summary: This study proposes a novel adsorbent (BMFA-BC) by using a facile ball milling technology to tailor Fe-Al oxides-laden bagasse biochar. The increased exposure of Fe-Al oxides and enhanced functional groups by ball milling result in a high adsorption capacity of BMFA-BC for aqueous tetracycline at 298 K, reaching up to 116.6 mg g-1. The adsorption performance is influenced by temperature.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Lijuan Wu, Xiaoke Yan, Lie Yang, Shitai Shen, Yulong Li, Shangding Yang, Liuyang He, Yulin Chen, Shengmao Yang, Zulin Zhang
Summary: This study systematically investigated the degradation performance and mechanism of chloramphenicol (CAP) using UV/sulfite advanced reduction processes (ARPs). The results showed that UV/sulfite-ARPs achieved simultaneous degradation efficiency of 90.67% and dechlorination efficiency of 92.22% within 50 minutes. The study also found that the degradation and dechlorination of CAP were influenced by sulfite concentration, and complete degradation and dechlorination were achieved. The presence of co-existing anions and water matrices had negligible effect on the degradation and dechlorination efficiencies of CAP.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Yongfei Ma, Jiayi Tang, Siyu Chen, Lie Yang, Shitai Shen, Xi Chen, Zulin Zhang
Summary: A novel method using ball milling and acetic acid co-modified sludge biochar (BASBC) was developed for degrading neonicotinoids. The degradation efficiency of the targeted pesticide reached 95.2% within 60 minutes. The BASBC also showed excellent degradation performance for other three typical neonicotinoids.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Yulong Li, Liuyang He, Yulin Chen, Jianming Xue, Li Zheng, Shengmao Yang, Li Wu, Zhendong Chen, Zulin Zhang, Lie Yang
Summary: This study investigates the distribution of PFOA and PFOS in soil aggregates. The ability of soil aggregates to carry these pollutants initially decreases and then increases with decreasing particle sizes. Organic matter is the main factor influencing their distribution, while soil types have no effect.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Environmental Sciences
Fengxia Yang, Xiaolong Wang, Xueli Tian, Zulin Zhang, Kai Zhang, Keqiang Zhang
Summary: In this study, the impacts of earthworm-converted livestock manure on antibiotic resistance genes (ARGs) in the earthworm gut were investigated. The results showed that livestock manure significantly increased the abundance of ARGs in the foregut and midgut of earthworms, but decreased in the hindgut. Copper had little effect on ARGs in the earthworm gut. Additionally, copper in wormcast significantly increased the abundance of ARGs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Liang Tian, Xiaofu Xu, Zulin Zhang, Yongzhen Ding, Keqiang Zhang, Suli Zhi
Summary: A comprehensive investigation on antibiotics in seawater from Bohai Bay is conducted, including the occurrence, ecological risks, and their relationship with trace elements and other contaminants. Tetracyclines were found to have the highest concentration among the five classes, with higher concentrations detected near the coast or shipping port.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2023)
Review
Chemistry, Physical
Jianting Sun, Wei Zheng, Gang Hu, Fan Liu, Siyuan Liu, Lie Yang, Zulin Zhang
Summary: Electrochemically assisted persulfate oxidation processes (EPOPs) have become increasingly popular for the degradation of organic pollutants. This review discusses the current status and prospects of EC/PS degradation and highlights the enhanced oxidation of organic contaminants using the combination of EC and PS. Various operational variables affecting contaminant removal are investigated, with the optimal conditions being case-specific. EPOPs offer a promising alternative to traditional advanced oxidation techniques, although there are still some drawbacks and challenges for large-scale applications.
Article
Engineering, Environmental
Yulin Chen, Ranran Song, Ping Li, Yile Wang, Yang Tan, Yongfei Ma, Lie Yang, Li Wu, Zhenjie Du, Xuebin Qi, Zulin Zhang
Summary: This study examined the sources, pollution, and ecological risks of PAHs in the Wuhan section of the Yangtze River. Sediment was found to be a secondary release source for two- and three-ring PAHs and a sink for four- and five-ring PAHs. The dominant contribution of PAHs in water was from two-ring PAHs, while in sediments, it was from four-ring PAHs. Higher levels of PAHs were observed around industrial areas during the wet season, influenced by local industrial emissions and rainfall/runoff. Risk assessments showed low risks in water but medium risks in 44% of the sediments. Energy structure adjustment and stricter regulations are necessary to reduce PAH emissions.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Green & Sustainable Science & Technology
Youming Zhang, Yun Gao, Yan Zhang, Zhijie Liang, Zulin Zhang, Yulong Zhao, Ping Li
Summary: With the rapid development of the global economy and society, water shortage has become a crucial limitation to the growth of many cities. This paper constructs an agricultural water resources evaluation system and uses CRITIC and AHP methods to quantitatively evaluate the agricultural water resources carrying capacity (AWRCC) in Henan Province. The results provide practical and rational suggestions for the sustainable development of AWRCC and understanding the current situation of agricultural water resources in Henan.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Linghui Quan, Yongtao Cheng, Jiping Wang, Yulin Chen, Diantong Li, Shiqi Wang, Bolin Li, Zulin Zhang, Lie Yang, Li Wu
Summary: In this study, Scenedesmus sp. TXH microalgae strain was used to remove the neonicotinoid pesticide thiamethoxam (THIA). The results showed that Scenedesmus sp. TXH exhibited high degradation ability and resistance to THIA, effectively removing THIA and conventional pollutants from wastewater. Moreover, THIA was found to cause oxidative damage to microalgae.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Zhikun Liu, Song Cui, Qiang Fu, Fuxiang Zhang, Zulin Zhang, Rupert Hough, Lihui An, Yi-Fan Li, Leiming Zhang
Summary: The study investigated the presence and fate of neonicotinoid insecticides (NNIs) in the farmland-river-marsh continuum in Northeast China. The most frequently detected NNIs were imidacloprid, thiamethoxam, and clothianidin. The concentrations of NNIs in soil, surface water, and sediment samples were measured, with higher concentrations found in upland fields and soybean-growing soils. The estimated environmental risks to aquatic organisms from residual concentrations of NNIs in water were low.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Physical
Zhikang Deng, Jinyao Zhu, Ping Li, Zhenjie Du, Xuebin Qi, Xi Chen, Rui Mu, Chenyu Zeng, Yongfei Ma, Zulin Zhang
Summary: A novel zinc metal organic framework porous biochar composite (Zn-BTC@SBC) derived from sludge was synthesized and used for adsorptive removal of tetracycline (TC) from water. The Zn-BTC@SBC showed a high adsorption capacity for TC due to its larger surface area, pore volume, and abundant oxygen-containing functional groups. The study demonstrated the promising potential of Zn-BTC@SBC for TC removal and the sustainable utilization of sludge.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Environmental Sciences
Li Wu, Linghui Quan, Zhikang Deng, Ashiwin Vadiveloo, Yongtao Cheng, Lie Yang, Zulin Zhang, Abdullah A. Saber, Shubin Lan
Summary: This study aimed to explore the potential of transferring nutrients from municipal wastewater through the cultivation of biocrust cyanobacteria. The results showed that the cyanobacteria-bacteria consortium could remove a high percentage of dissolved nitrogen and phosphorus from the wastewater. The composition and ratio of cyanobacteria to indigenous bacteria were altered by adjusting the light intensity, indicating the potential for establishing a BCIB cultivation system for wastewater treatment and other applications.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Yile Wang, Yuying Feng, Yulin Chen, Tianyi Li, Yang Tan, Yongfei Ma, Zulin Zhang
Summary: This study is the first to investigate the annual flux, spatiotemporal changes and sources of PCBs and PBDEs in water and sediment from the middle reach of Yangtze River (Wuhan, China), based on monthly monitoring data in a one-year study.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Xi Chen, Jinyao Zhu, Yongfei Ma, Chenyu Zeng, Rui Mu, Zhikang Deng, Zulin Zhang
Summary: A novel approach using ball milling and oxalic acid to modify sludge-based biochar was found to enhance its activation performance for degrading sulfamethoxazole. The system showed high removal rates for sulfamethoxazole at different pH levels and had good tolerance to background electrolytes. Non-radicals and surface-bound radicals were identified as the main contributors to the degradation process. The transformed products generated in the system were less toxic than sulfamethoxazole. After multiple reuse cycles, the system maintained a high removal rate. This study provides valuable insights for the treatment of municipal sludge.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
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)