Article
Engineering, Environmental
Jie Chen, Jinfeng Ling, Bo Sun, Jian Wang, Baoxue Zhou, Xiaohong Guan, Yuankui Sun
Summary: The study investigated the abatement of TrOCs in real waters using the PM/BS process and evaluated its feasibility as a pretreatment process. The results showed that the removal efficiency of TrOCs was influenced by the concentration of dissolved organic matter and halide ions. The PM/BS process showed advantages and could be combined with traditional water treatment processes.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Shule Duan, Huiyu Dong, Pin Hou, Gangsheng Han, Bochao Zhang, Zhimin Qiang
Summary: This study found that the presence of Mn(II) under oxic conditions could accelerate the removal of bisphenol A by Mn(VII) oxidation. The results also showed that dissolved oxygen (DO) played a significant role in the Mn(VII)/Mn(II) process.
Article
Engineering, Environmental
Erdan Hu, Wenzhong Zhang, Jun Wu, Hefa Cheng
Summary: In this study, the rapid transformation of chlorobenzenes by soluble Mn(III) in the permanganate/bisulfite process was reported. The removal of chlorobenzenes was highly efficient, especially for those with fewer chlorine atoms. Mn(III) was found to act as a strong electrophilic reagent in the degradation of chlorobenzenes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Xianhu Qi, Dandan Rao, Jian Zhang, Bo Sun
Summary: The bisulfite-activated permanganate (S(IV)/Mn(VII)) process is a promising method for degrading micropollutants. This study investigated the influence of chloride, a common water constituent, on the S(IV)/Mn(VII) process. It was found that chloride decreased the removal of certain pollutants but increased the removal of others. The study also identified the reactive species involved in the process and observed the formation of reactive chlorine species in the presence of chloride.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Chaoting Guan, Qin Guo, Zhen Wang, Xipeng Wei, Bin Han, Xiaonan Luo, Hanping Pan, Jin Jiang
Summary: This article presents a critical review of the scientific development of the bisulfite-activated permanganate process for the degradation of organic contaminants in water. Reactive manganese species and radical species are identified as the oxidizing components responsible for enhanced degradation. The presence of dissolved oxygen is crucial for driving the oxidation of organics. Similar activation pathways are found for other high-valent metal oxyanions. The article also highlights the knowledge gaps and proposes future research needs for the practical application of this oxidation technology.
Article
Environmental Sciences
Bo Sun, Yiqiao Zhang, Zhaoyu Gong, Jian Zhang, Jing Zhang
Summary: This study demonstrated that the presence of aniline can significantly enhance the degradation rate of bisphenol A by permanganate, with the formation of colloidal MnO2 playing a key role in the oxidation process. The reactivity of MnO2 is pH sensitive, showing higher activity under acidic conditions, which explains the observed enhancement of aniline on BPA removal by permanganate at pH < 7.0.
Article
Environmental Sciences
Shenglan Liu, Yiqing Liu, Jiewen Deng, Yongsheng Fu
Summary: In this study, the PM/BS system was used for rapid removal of SMX from contaminated water, and the results showed that 80% SMX was removed within 10 s. Reactive manganese species, sulfate radical, and hydroxyl radical formed in the PM/BS system all played a role in accelerated degradation of SMX.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Environmental Sciences
Shu He, Nanqi Ren
Summary: The PM/BS process is an efficient oxidation process for degrading micropollutants. However, when reacting with natural organic matter (NOM) in water, it can impact the formation of disinfection-by-products (DBPs) during chlorination. This study found that PM/BS pre-oxidation of NOM decreased the formation of TCM but increased the production of highly toxic N-DBPs, thus increasing the risk of water quality.
Article
Engineering, Environmental
Yihao Li, Hongmei Tang, Xiangqin Peng, Shiyang Tao, Jie Ding, Meiqing Chen, Pingxiao Wu, Nengwu Zhu
Summary: The dynamic interactions between iron (Fe) oxides and organic matter (OM) are crucial for the geochemical cycling of carbon (C) and toxic trace metals. This study investigated the mechanism of fine iron mineral structure, fulvic acid (FA) sequestration, and hydrated Cu(II) coordination on Fe oxides using several analytical techniques. It was found that the dosage of FA influenced the formation of Fe oxides, with a preference for Fe-O tetrahedral structures. FA molecules primarily interacted with the surfaces of Fe oxides through van der Waals forces. Hydrated Cu(II) oxides were mainly present as divalent oxidation states on the surface of iron oxides and coordinated with phenolic hydroxyl groups of FA and Fe oxides. These findings provide insights into the geochemical processes of Fe, C, and toxic trace metals.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Dingxiang Wang, Jiahao He, Jun Ma, Jing Zhang, Timothy J. Strathmann
Summary: Permanganate and ferrate oxidations are widely used advanced treatment processes to degrade organic components in secondary effluents from municipal wastewater treatment plants. However, these reactions are sensitive to the dissolved effluent organic matter (EfOM) and do not mineralize it but change its molecular composition.
Article
Engineering, Environmental
Shuchang Wang, Jie Chen, Yuankui Sun, Bo Sun, Junlian Qiao, Xiaohong Guan
Summary: This study investigates the role of MnO2 colloids and Mn(III) in the oxidation process of Mn(VII) with organic pollutants. The results show that the oxidation of phenolic contaminants by Mn(VII) exhibits an autoaccelerating trend, which is attributed to the oxidation of the organics by MnO2 colloids. The influence of pyrophosphate suggests that Mn(III) is also responsible for the autoaccelerating oxidation under specific conditions. The overall contribution of MnO2 colloids and Mn(III) ranges from 6.6% to 67.9% during the oxidation process.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Green & Sustainable Science & Technology
Wei-Ran Han, Wen-Long Wang, Zheng-Wei Yang, Hang Su, Chen-Xin Xu, Qian-Yuan Wu
Summary: The removal of trace organic contaminants is crucial for treating contaminated water and reducing associated risks. Ozonation, while commonly used for this purpose, can generate harmful oxidation byproducts. Toxic byproducts are often observed during ozonation of various contaminants, and their toxicity varies with the efficiency of contaminants removal.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Engineering, Environmental
Juan Li, Su-Yan Pang, Zhen Wang, Qin Guo, Jiebin Duan, Shaofang Sun, Lihong Wang, Ying Cao, Jin Jiang
Summary: This study summarizes the latest research findings on Mn(VII) reactions with a wide range of EOCs, detailing aspects of reaction kinetics, oxidation products, toxicity changes, and emphasizes the impacts of intermediate manganese products. The research highlights the significant roles of manganese products in Mn(VII) oxidation processes, advancing understanding in water treatment applications.
Article
Engineering, Environmental
Dandan Rao, Jie Chen, Hongyu Dong, Junlian Qiao, Baoxue Zhou, Yuankui Sun, Xiaohong Guan
Summary: Using calcium sulfite as a slow-release source of sulfur dioxide, the effective working pH range of permanganate activation by sodium sulfite was extended from <= 7.0 to <= 9.0. The presence of calcium ions in the system led to enhanced precipitation of manganese dioxide, resulting in very low residual manganese levels. The Mn(VII)/CaSO3 system demonstrated a unique two-stage oxidation process with improved understanding of reaction kinetics and reactive oxidants.
Article
Environmental Sciences
Les D. Warren, Meaghan E. Guyader, Richard L. Kiesling, Christopher P. Higgins, Heiko L. Schoenfuss
Summary: The study found that exposure to trace organic contaminant mixtures resulted in decreased feeding efficiency in larval fathead minnows. Effects on adult fishes were mixed, with male sunfish showing a significant induction of vitellogenin levels.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2021)
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)