Article
Engineering, Environmental
Jie Zeng, Jia Liu, Wenzhen Su, Jiaojiao Tang, Zhen Luo, Fenglin Tang, Xiupei Yang
Summary: Sulfide-modified nanoscale zero-valent iron (SnZVI) is an effective method for persulfate (PS) activation. Several factors including sulfidation regent, Fe/S molar ratio, pH value, catalyst and PS dosage, as well as common anion species, were evaluated for their influence on the catalytic activity. Promising results were obtained with Na2S as sulfidation regent at a Fe/S molar ratio of 0.05, 1.5 g·L-1 SnZVI dosage, and 1.5 mM PS dosage. The high and persistent release of Fe2+ and FexSy on the catalyst surface accelerated the electron transfer rate for PS activation. Center dot OH was identified as the dominant reactive radical. The ecotoxicity of intermediate products of MNZ was greatly reduced, indicating the promising application of SnZVI/PS in the remediation of MNZ contaminated water.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Chemical
He Gu, Yuquan Gao, Mengmeng Xiong, Daofang Zhang, Weifang Chen, Zhihua Xu
Summary: This study investigated the removal efficiency of nitrobenzene by nano zero-valent iron/graphene/biochar composite modified with graphene. The results showed that graphene modification enhanced the reduction capacity of the composite, increasing the removal efficiency by releasing electrons to attack nitrobenzene molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Yan Xu, Zheming Liu, Kexin Ma, Qingdong Qin
Summary: Nanoscale zero-valent iron (nZVI) based materials are considered as promising materials for groundwater remediation. An improved synthesis method was developed, which increased the iron content and utilization of reactants, leading to improved performance of the material.
Article
Engineering, Environmental
Mingyang Song, Xiaolei Hu, Tianhang Gu, Wei-xian Zhang, Zilong Deng
Summary: In this study, a nanocellulose-based composite, NC-nZVI, was developed for efficient removal of nickel. The nZVI was anchored to nanocellulose through a liquid-phase reduction method, resulting in varied morphology and dispersion status. Among the developed composites, CNC-nZVI showed the most evenly distributed nZVI particles. The binding between NC and nZVI was achieved through hydrogen bonds, electrostatic attractions, coordination-covalent bonds, and steric hindrance. The CNC-nZVI composite exhibited significantly higher removal efficiency of Ni2+ compared to bare nZVI, and remained effective under a wide pH range and in the presence of interference ions like NO3-, Cl-, and Ca2+. The observed hollow-out structure and Tafel extrapolation curves indicated that CNC activated diffusion path and accelerated electronic transfer from nZVI. The superior removal performance of NC-nZVI and the abundance of raw materials make it a promising material for environmental remediation and wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Xiaowen Zhang, Xudong Liu, Ying Peng, Xiaoyan Wu, Yujiao Tan, Qin Zeng, Zhijun Song, Mi Li
Summary: Coating a soluble Mg(OH)2 shell on nanoscale zero-valent iron (nZVI) particles can enhance their long-term reactivity and durability in groundwater, leading to more efficient uranium removal. The passivation shell erosion plays a crucial role in promoting synergistic adsorptive and reductive processes for U(VI) elimination by exposed Fe(0) core.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Qi Cheng, Qingrui Li, Xiaojie Huang, Xiaoqin Li, Yunyan Wang, Weizhen Liu, Zhang Lin
Summary: In this study, cauliflower-like amorphous nanoscale zero-valent iron (A-nZVI) was prepared and found to have better performance for the removal of Sb(III) compared to nZVI. A-nZVI showed higher removal capacity and selectivity for Sb(III) and was less affected by interfering anions. The findings contribute to the remediation of Sb(III) in groundwater.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Li Liang, Weiying Li, Yue Li, Wei Zhou, Jiping Chen
Summary: The study investigated the removal mechanisms of sulfidated nanoscale zero-valent iron (S-nZVI) towards EDTA-chelated CdII (CdII-EDTA) and the effects of critical factors on CdII-EDTA removal by S-nZVI. Results showed that S-nZVI had a high removal capacity for CdII-EDTA and the mechanism involved two-step replacement reactions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Chunxia Ding, Wei-ai Zeng, A-juan Zhao, Mengyun Yang, Yanlan Xie, Yaocheng Deng, Daoxin Gong, Meizheng Duan, Hailin Cai, Pengfei Xie, Yong Zhou, Zhiyong Wen
Summary: Nanoscale zero-valent iron particles loaded on montmorillonite (nZVI/Mt) were synthesized for effective removal of thiamethoxam, with the reaction conditions optimized through response surface methodology. The removal efficiency of thiamethoxam reached 94.29% under the optimal conditions, and the degradation mechanism involved reduction and elimination of the -NO2 group on the thiamethoxam molecule by nZVI/Mt.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Huina Liu, Hongyang Yu, Yifeng Wu, Dongyu Peng, Shanshan Lin
Summary: Nanoscale zero-valent iron (nZVI) particles were prepared using different polyhydroxy alcohols as the liquid phase reduction medium for nitrate removal from wastewater. The prepared nZVI particles exhibited higher nitrate removal efficiency compared to pure aqueous medium. The formation of an alcohol hydroxyl shell improved the dispersion performance and reactivity of nZVI particles in the nitrate reduction process.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Engineering, Environmental
Ghulam Hussain Qasim, Hasan Fareed, Mijin Lee, Woojin Lee, Seunghee Han
Summary: A Fenton-like reaction activated by nanoscale zero-valent iron (nZVI) was proposed for the decomposition of aqueous monomethylmercury (MMHg). The reaction efficiently removed MMHg with the main product being Hg(II). Furthermore, the reduction of Hg(II) by magnetite on the nZVI surface was found to enhance the removal of MMHg.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Yujun Cheng, Haoran Dong, Tianwei Hao
Summary: In this study, calcium carbonate coated nanoscale zero-valent iron (C-nZVI) was synthesized for Cr(VI) removal. The water chemistry had an influence on C-nZVI reactivity, with NO3 showing a positive effect on C-nZVI contrary to its influence on nZVI.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Anzhou Ma, Jianpeng Ma, Xianke Chen, Guoqiang Zhuang
Summary: A synergistic removal strategy using Pseudomonas sp. JS100 and immobilized nanoscale zero-valent iron (NZVI) was proposed for the degradation of pentachlorobenzene (PeCB). The removal efficiency of PeCB reached 80.2% within 48 hours in the synergistic system. NZVI particles were dispersed and attached to the biofilter to increase the specific surface area.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Qiming Li, Meili Liu, Xuchun Qiu, Xiang Liu, Malcom Frimpong Dapaah, Qijian Niu, Liang Cheng
Summary: Carbonized melamine foam-supported nZVI composites were evaluated for efficient Cr(VI) removal. Fe@MF-12.5-800 exhibited the highest removal efficiency and remarkable stability at a neutral pH.
Article
Multidisciplinary Sciences
Xinwei Cai, Yangshuai Qiu, Yanhong Zhou, Xuan Jiao
Summary: The study found that nZVI@EG exhibits good adsorption performance in removing hexavalent chromium, achieved through the reduction of Cr (VI) to Cr (III) by nZVI and the deposition of Cr (III) on the surface through chemical reduction and physical adsorption, significantly reducing the total chromium content in the aqueous solution.
ROYAL SOCIETY OPEN SCIENCE
(2021)
Article
Environmental Sciences
Ruiming Zhang, Rossana Napolano, Beidou Xi, Anne Millicent Salazar, Qiantao Shi, Ying Zhao, Xiaoguang Meng
Summary: Recent studies have found that the combination of zero-valent iron (ZVI) and pyrite (FeS2) can effectively remove Cr(VI) from water. This study discovered that dissolved oxygen (DO) plays a crucial role in enhancing the removal efficiency. The presence of DO led to the oxidation of pyrite, producing protons that promote ZVI corrosion and creating dissolved sulfide, which improves the removal of Cr(VI) by forming ferrous sulfide precipitates on the ZVI surface.
Review
Agricultural Engineering
Yunqiang Yi, Zhexi Huang, Baizhou Lu, Jingyi Xian, Eric Pokeung Tsang, Wen Cheng, Jianzhang Fang, Zhanqiang Fang
BIORESOURCE TECHNOLOGY
(2020)
Article
Green & Sustainable Science & Technology
Yunqiang Yi, Guoquan Tu, Dongye Zhao, Pokeung Eric Tsang, Zhanqiang Fang
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Chemistry, Physical
Nuanqin Zhang, Eric Pokeung Tsang, Junyi Chen, Zhanqiang Fang, Dongye Zhao
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)
Article
Environmental Sciences
Nuanqin Zhang, Eric Pokeung Tsang, Kuang Wang, Jianzhang Fang, Yaowei Li, Guangying Zhou, Zhanqiang Fang
Summary: By modifying Cu2O with iron-nitrogen co-doped carbon nanotubes, the study demonstrates ultrahigh catalytic performance in the activation of peroxymonopersulfate to degrade fluconazole, as well as reducing the acute biotoxicity of various recalcitrant pollutants. This research not only enhances the reactivity and applicability of PMS activators, but also proposes a new reaction mechanism for the fluconazole degradation pathway.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Na Li, Guang-Guo Ying, Huachang Hong, Eric Po Keung Tsang, Wen-Jing Deng
Summary: The study found that children in Hong Kong are exposed to various plasticizers and their alternatives, with high concentrations of t-butylphenyl diphenyl phosphate (BPDP) and bisphenol A bis(diphenyl phosphate) (BDP). Compared to Japanese and German children, the concentrations of phthalate metabolites in Hong Kong children were lower. Bisphenol analogs play a significant role in the exposure pathways of children in Hong Kong.
ENVIRONMENTAL POLLUTION
(2021)
Article
Agricultural Engineering
Yunqiang Yi, Guoquan Tu, Guangguo Ying, Zhanqiang Fang, Eric Pokeung Tsang
Summary: The study successfully synthesized magnetic biochar from stainless steel pickling waste liquor and rice straw, with high specific surface area and adsorption capacity for crystal violet. The material exhibited good adsorption efficiency and maintained high performance even after multiple adsorption-regeneration cycles.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Zhexi Huang, Yunqiang Yi, Nuanqin Zhang, Pokeung Eric Tsang, Zhanqiang Fang
Summary: After ball milling treatment, the adsorption capacity of magnetic biochar for fluconazole was significantly improved, with the maximum adsorption capacity approximately five times higher than that of pristine magnetic biochar. This enhancement in adsorptive performance was mainly attributed to an increase in oxygen-containing functional groups.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Yunqiang Yi, Fangying Kou, Pokeung Eric Tsang, Zhanqiang Fang
Summary: This study introduced sodium borohydride as a co-milling additive to enhance the mechanochemical degradation of BDE209-contaminated soil, achieving a removal efficiency of approximately 100% with 2 h of ball milling. Gas chromatography-tandem mass spectrometry was used to identify the main degradation intermediates and degradation pathway of BDE209. The findings suggest that sodium borohydride-assisted mechanochemistry is a concurrent process of stepwise and multistage debromination.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Review
Engineering, Environmental
Long Zhou, Zheng Li, Yunqiang Yi, Eric Pokeung Tsang, Zhanqiang Fang
Summary: This review provides a progress report on the significant developments in electron selectivity (ES) of nanoscale zero-valent iron nanoparticles (nZVI) over the past decade, including the definition of ES, quantification approaches, factors affecting ES, and latest techniques for increasing ES.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Theresa Wing Ling Lam, Yui Chain Jade Tsui, Lincoln Fok, Lewis Ting On Cheung, Eric Po Keung Tsang, John Chi-Kin Lee
Summary: This study explores household decarbonizing cooling behavior by applying an emotional extension of the theory of planned behavior. The results show that subjective norms have the most significant influence, followed by affective connection to nature and negative anticipated emotions. Attitude towards the behavior and perceived behavioral control were found to have a non-significant effect on behavioral intention.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Ecology
Jing Liu, Wen-Jing Deng, Guang-Guo Ying, Eric P. K. Tsang, Hua-Chang Hong
Summary: The study found that multiple antibiotics were widely distributed in rivers and seawater in Hong Kong, with tetracyclines being the most commonly used. Antibiotic concentrations in seawater were lower compared to river water, possibly due to pollution from nearby rivers. Ofloxacin and ciprofloxacin posed medium to high ecological risks in most places.
Article
Environmental Sciences
Jing Liu, Li-Xin Hu, Wen-Jing Deng, Guang-Guo Ying, Huachang Hong, Eric P. K. Tsang, Damia Barcelo
Summary: Increased disinfection efforts in response to the COVID-19 pandemic have led to elevated concentrations of disinfectants in sewage and surface runoff in Hong Kong, resulting in the generation of toxic disinfection byproducts. Our study found various disinfection byproducts in rivers and seawater in Hong Kong, with bromoform posing the highest risk to aquatic organisms.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Chun-Leung Kwok, Shun-Cheung Cheng, Pui-Yu Ho, Shek-Man Yiu, Vonika Ka-Man Au, Wing-Kei Ho, Po-Keung Tsang, Jing Xiang, Chi-Fai Leung, Chi-Chiu Ko
Summary: In this study, it was discovered that by introducing substituents with different electronic properties into iminopyridine complexes, the catalytic efficiency of water reduction catalysts can be enhanced. Under visible light conditions, these catalysts can photochemically reduce water to produce hydrogen in aqueous acetonitrile.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Environmental Sciences
Baizhou Lu, Zhanqiang Fang, Pokeung Eric Tsang, Jinhua Wu
Summary: In this study, guava leaf extract (GLE) was used as a green promoter to enhance the traditional zero-valent iron Fenton-like (ZVI/H2O2) process. The removal rate and k(obs) of norfloxacin by the ZVI/H2O2/GLE system were significantly increased compared to the ZVI/H2O2 system. Mechanism investigation showed that the attack of reactive oxygen species and the promotion of reactive oxygen species generations were the main factors contributing to the improved reactivity. This study provides an important reference for the practical application of guava leaf in promoting the ZVI/H2O2 process in environmental pollution control.
Article
Chemistry, Multidisciplinary
Chun Leung Kwok, Shun-Cheung Cheng, Pui-Yu Ho, Shek-Man Yiu, Wai-Lun Man, Vonika Ka-Man Au, Po-Keung Tsang, Chi-Fai Leung, Chi-Chiu Ko, Marc Robert
CHEMICAL COMMUNICATIONS
(2020)
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)
