Article
Environmental Sciences
You Ma, Tian -Yu Li, Han Meng, Guo-Xiang Wang, Li-Min Zhang, Guo-Zheng Jia, Jie Ma, Yan Xiao, Wei-Hua Li, Wen-Ming Xie
Summary: This study investigated the adsorption of the antibiotic trimethoprim (TMP) by extracellular polymeric substances (EPS) in anaerobic activated sludge. The results showed that loosely-bound EPS had a positive effect on TMP adsorption, while tightly-bound EPS had a negative effect.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Lulu Xing, Jixian Yang, Bing-Jie Ni, Chao Yang, Chunyan Yuan, Ang Li
Summary: The generation and consumption mechanisms of TB-EPS and LB-EPS are revealed through mathematical modeling, providing a quantitative prediction for their changes. This study systematically investigates the impact of TB-EPS and LB-EPS on the flocculation and settling performance of activated sludge.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Shaodong Guo, Long Zhou, Yuxin Huang, Xinghu Huang
Summary: Thermally and Fe(II) activated potassium persulfate (PPS) were compared for their effects on sludge dewatering performance. Both methods improved sludge dewaterability with increasing PPS dosage and condition time, but Fe(II) activation showed better performance at lower dosage and shorter time. Furthermore, Fe(II) activation led to faster conversion of sludge TB-EPS to SB-EPS compared to thermally activated PPS.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Xuan Gao, Kun Yang, Daohui Lin
Summary: The presence of extracellular polymeric substance (EPS) affects the interfacial interaction between titanium dioxide nanoparticles (nTiO(2)) and algae, promoting surface accumulation of nanoparticles on algal cells while limiting their internalization. The different endocytosis pathways for anatase nTiO(2) and rutile nTiO(2) entering algal cells may be attributed to their affinities to mediating receptors. EPS removal activates mediating pathways, facilitating more nanoparticle internalization.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Tianran Ye, Ao Yang, Yulai Wang, Na Song, Ping Wang, Huacheng Xu
Summary: This study investigates the response of extracellular polymeric substances (EPS) in Microcystis aeruginosa to microplastics (MPs). The results show that MPs can inhibit the growth of Microcystis, but enhance the secretion of EPS. The organic composition in EPS varies differently in response to MP exposure, leading to changes in the dominant components and potential ecotoxicological risk. These findings contribute to our understanding of the interaction between phytoplankton and MPs in aquatic environments.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Yun bei Li, Jun li Song, Qian jing Yao, Ze xu Chen, Yi Wei, Hai long Li, Meng xiao Wang, Bing jing Wang, Jia min Zhou
Summary: Increasing dissolved oxygen concentration can enhance bioleaching efficiency, improve sludge dewatering performance, and facilitate the removal of heavy metals. Additionally, the degradation of EPS and sludge floc fragmentation play vital roles in the bioleaching process.
Article
Environmental Sciences
Qing-Long Fu, Chun-Jie Zhong, Ting Qing, Zi-Yan Du, Cheng-Cheng-Li, Jun-Jie Fei, Willie J. G. M. Peijnenburg
Summary: The study found that the biological impacts of metallic Ag-NPs and silver sulfide nanparticles (Ag2S-NPs) depend on their form and are highly influenced by microbial EPS. Compared to Ag-NPs, Ag2S-NPs have less impact on plants, while Bacillus subtilis EPS significantly alleviates the phytotoxicity of Ag-NPs.
Article
Green & Sustainable Science & Technology
Shu Wang, Nanqi Ren, Danhui Liang, Jifei Chang, Xin Wang, Jiaguo Yan, Xiang Cheng, Lili Dong, Nan Li
Summary: This study evaluated the changes of rFe, vFe, and RV after removing EPS, and found that TB-EPS played a crucial role in vivianite formation, contributing 28-51% of vivianite recovery and 34-55% of iron reduction. Electronic shuttle substances in TB-EPS enhanced the EET rate and efficiency between cells and Fe(III). Additionally, redox proteins were embedded in EPS, shortening the distance of electron hopping and accelerating vivianite recovery from wastewater.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Xuejie He, Lei He, Ziyuan Lin, Jiong Zhou, Shuohui Shi, Yi Liu, Jian Zhou
Summary: This study developed a sludge composite conditioner (SCC) to significantly improve the dewaterability of high-organic sludge, achieved by promoting dissolution of extracellular polymeric substances, enhancing decomposition of sludge flocs, and increasing sludge particle size.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Yufeng Zheng, Yuying Zhao, Run Su, Ni An, Youliang Zhang, Yan Wei, Bin Ma
Summary: A novel method using polyurethane foam carriers for rapidly immobilizing slow-growing anammox bacteria through dewatering was proposed in this study. The carriers retained 83.12 +/- 3.24 % of the sucked sludge under shear conditions after natural dewatering for 12 h. The specific anammox activity of the bacteria retained in the carriers was lost by 19.95 +/- 1.37 % during the dewatering process. This dewatering immobilization method relies on the cross-linking of alginate-like exopolysaccharides with Ca2+ and the network structure of polyurethane foam carrier. It provides an easy and low-cost approach for rapid immobilization of slow-growing anammox bacteria.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Dongqin He, Mingkai Sun, Bo Bao, Jingyi Chen, Hongwei Luo, Jun Li
Summary: The combined use of acid and flocculant can effectively enhance sludge dewatering performance. Results showed that dosing PDMDAAC before acid treatment leads to better dewatering capability, reducing water content. The potential mechanisms behind enhanced dewatering performance include the decomposition of tightly-bound extracellular polymeric substances, increased particle size, and changes in sludge floc morphology.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Ming Zhang, Caroline L. Peacock, Peng Cai, Ke-Qing Xiao, Chenchen Qu, Yichao Wu, Qiaoyun Huang
Summary: Recent research has shown that microbially-derived compounds, particularly extracellular polymeric substances (EPS), play a significant role in the soil organic matter pool. The interaction between EPS and soil minerals affects the sorption and selective retention of EPS constituents. The study investigates the EPS association pathways with ferrihydrite and their impact on the mobility and fate of microbially-derived organic matter in soil environments.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Engineering, Environmental
Xiaoying Liu, Jie Liu, Dongkun Deng, Renjie Li, Chao Guo, Jinxia Ma, Ming Chen
Summary: The study revealed a positive correlation between EPS content and sludge granulation, with increased protein concentration facilitating microbial aggregation and sludge granulation. Environmental factors affect the properties of EPS, with different types of sludge generating varying levels of EPS and protein concentrations.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Tao He, Jing-Qiu Hua, Rong-Ping Chen, Lei Yu
Summary: This study explored the adsorption capacity of Klebsiella oxytoca, a dye-degrading and EPS-producing strain, to methylene blue. The results showed that EPS played a significant role in the adsorption of MB dye.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Cheng-Cheng Ji, Ke-Yu Chen, Shao-Kang Deng, Jian-Xiao Wang, Yun-Xia Hu, Xin-Hua Xu, Li-Hua Cheng
Summary: In this study, the fouling behaviors of Chlorella vulgaris and Scenedesmus obliquus in forward osmosis membrane filtration process were compared, and the roles of soluble-extracellular polymeric substances (sEPS) and bound-EPS (bEPS) in fouling performance were investigated. The results showed that bEPS played a crucial role in fouling, and the severe fouling performance was consistent with the proper ratio of carbohydrates and proteins in the cake layer, as well as higher low molecular weight (LMW) components. The study revealed the fundamental mechanism of FO membrane fouling caused by real microalgal suspension and improved understanding of evolutionary fouling performances of algal EPS.
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)