Article
Engineering, Environmental
Wenjie Dong, Xiaorong Gu, Yu Shu, Dingyi Cao, Jingyi Yu, Mona A. Abdel-Fatah, Hailu Fu
Summary: Pulse electrocoagulation (PEC) was used to treat synthetic solutions containing antimony. The study investigated the effects of electrode materials, distance between electrodes, duty ratio, current frequency, and initial pH on the removal efficiency. The results showed that the removal of Sb reached 93.5% under optimal conditions. Additionally, the addition of polymeric aluminum chloride (PAC) as a coagulant improved the removal effect.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Water Resources
Mohammad Mehralian, Mohammad Hassan Ehrampoush, Ali Asghar Ebrahimi, Arash Dalvand
Summary: This study investigated the performance of a continuous-flow electrocoagulation (CFR-EC) reactor with a novel configuration of iron and aluminum electrodes for treating aged landfill leachate. The effects of current density, initial pH, and hydraulic retention time on the removal of pollutants were modeled using Box-Behnken design. The results showed that the CFR-ECFe reactor achieved high removal efficiencies for COD, TOC, BOD5, and NH3-N, as well as heavy metals. The total process cost for landfill leachate treatment was 0.21 $/m(3).
APPLIED WATER SCIENCE
(2023)
Article
Environmental Sciences
Gang Guo, Tianwei Hao
Summary: The study aimed to optimize the granulation of SOAD sludge by adjusting reactor configuration and mixing mode. Results showed dense and compact granules developed in Reactor C, leading to better nitrate removal and sulfur conversion performance.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Huanhuan Shi, Sheau-Yun (Dora) Chiang, Yaye Wang, Yifei Wang, Shangtao Liang, Jing Zhou, Raymond Fontanez, Shixiang Gao, Qingguo Huang
Summary: This study demonstrated the feasibility of using a novel treatment train that combines electrocoagulation with electrooxidation to remove and degrade PFASs from water. Long-chain PFASs were found to have a higher removal rate. Acid dissolution methods were effective in recovering and concentrating PFASs, and successfully applied in treating groundwater from contaminated sites.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Multidisciplinary
Wei Zhang, Jiming Yao, Yuguang Mu, Mengdi Zhang
Summary: During the electrocoagulation of indigo wastewater, the morphology of flocs is directly related to the adsorption of indigo dye. The study found that the morphology and growth of flocs change with the electrolytic time, and the optimal morphology for dye adsorption is loose and large in size. Kinetics and thermodynamics analysis revealed that the adsorption of indigo dye by flocs occurs through a monolayer physical adsorption process.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Environmental Sciences
Thomas Hoehne, Vahid Farhikhteh Asl, Loreen Ople Villacorte, Mark Herskind, Maryam Momeni, Douha Al-Fayyad, Sibel Tas-Koehler, Andre Lerch
Summary: The study focused on numerical investigation of an EC reactor with spiral electrodes to enhance retention of particulate and colloidal matter through mathematical modeling. By simulating different flow rates, the optimal retention and degassing period along with gas holdup were determined, providing valuable insights for improving the efficiency of hybrid membrane systems.
Article
Engineering, Chemical
Junjie Yu, Hui Xu, Xiaofang Yang, Hongyan Sun, Zhiyuan Jin, Dongsheng Wang
Summary: This study investigates the growth mechanism and properties of HA-floc under different stirring conditions. The results show that HA is removed in the early stages and does not vary significantly during floc growth. The stirring condition does not affect the removal of HA, but has a remarkable effect on floc growth and structure.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Yang Yu, Mengyu Zhang, Qian Li, Xueming Chen, Dongzhi Chen, Huachang Jin
Summary: Electrocoagulation is a promising process for removing hardness from cooling water. By introducing a special membrane polarization-catalyzed H2O dissociation, the efficiency of hardness removal can be substantially enhanced.
Article
Environmental Sciences
Chao Guo, Leicheng Guo, Sarah Bass, Andrew J. Manning, Zhongwu Jin, Yinjun Zhou
Summary: The effects of different types of organic matter on fine sediment flocculation were investigated through laboratory tank experiments. Results demonstrated that the introduction of organic polymers (such as xanthan gum and guar gum) significantly enhanced flocculation, while the addition of humic acid had minimal influence. The nonionic polymer guar gum showed greater efficacy in promoting larger and more fractal flocs compared to the anionic polymer, xanthan gum. Non-linear trends were observed in the evolution of floc size and structure with increasing ratios of organic polymer concentration to kaolinite concentration.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Salar Salmanipour, Amin Sokhansanj, Mohammad-Hossein Sarrafzadeh, Ali Akbari
Summary: The electrocoagulation method is effective for removing arsenic from water, but further purification is needed to remove membrane fouling. Increasing voltage and current can improve arsenic removal and reduce membrane fouling. Under the optimal conditions, the concentration of arsenic can be reduced below the maximum permissible level.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Lokesh Kumar Akula, Vidyasagar Babu Gaddam, Madhuri Damaraju, Debraj Bhattacharyya, Kiran Kumar Kurilla
Summary: The study investigated the effectiveness of a sequenced biological-physicochemical reactor system in treating sewage. Achieving high removal rates of COD, DOC, TN, and TP, as well as significant reduction of micropollutants, the coupled SBR-ECR system offers a more compact footprint compared to conventional biological treatment systems. However, further disinfection treatment is recommended for safe reuse of the treated water due to the presence of coliforms in the outlet samples.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Engineering, Environmental
P. V. Nidheesh, Akeem Adeyemi Oladipo, Nael G. Yasri, A. R. Laiju, V. R. Sankar Cheela, Abdoulaye Thiam, Yemane G. Asfaha, S. Kanmani, Edward (Ted) P. L. Roberts
Summary: Electrocoagulation (EC) is known for its effectiveness in treating water and wastewater. Various improvements such as the addition of air and hydrogen peroxide to generate radicals, the use of an air cathode to reduce energy consumption, and the utilization of renewable energy sources have been adopted to enhance the applicability and performance of EC. It has been shown to be suitable for treating microplastics, nanoparticles, emerging contaminants, oil and grease, and disinfection.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Green & Sustainable Science & Technology
Omar Khalifa, Fawzi Banat, C. Srinivasakannan, Faisal AlMarzooqi, Shadi W. Hasan
Summary: This study investigated a novel hybrid treatment method combining electrocoagulation, ceramic microfiltration membrane, and ozonation for treating oily wastewater, achieving good pollutant removal efficiency. The selected study variables included hydraulic retention time, aeration, current density, mode of power supply, and initial pH of the sample. The results demonstrated that the ozonation-assisted electro-membrane hybrid method shows potential in treating oily wastewater.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Multidisciplinary Sciences
Muhammad Aiyd Jasim, Forat Yasir AlJaberi, Ali Dawood Salman, Saja Mohsen Alardhi, Phuoc-Cuong Le, Gvendolin Kulcsar, Miklos Jakab
Summary: This study used a new design of an electrocoagulation reactor (ECR) to treat oily wastewater effluents from the Al-Muthanna petroleum plant with the aim of minimizing Total Dissolved Solids (TDS) to suitable levels. The effects of electrolysis period, current density, and flow rate on the final TDS value were investigated. The results showed that increasing flow rate led to a higher final TDS value, while extending the electrolysis process and raising current density reduced it. The study confirmed the efficacy of the new electrocoagulation reactor design in treating petroleum wastewater under specific conditions and overcoming the limitations of conventional designs.
Article
Agricultural Engineering
Simona Lucakova, Irena Branyikova, Sara Kovacikova, Jiri Masojidek, Karolina Ranglova, Tomas Branyik, Marek C. Ruzicka
Summary: Centrifugation is the most commonly used method for harvesting microalgae on an industrial scale, but it has high energy costs. To reduce these costs, a continuous electrocoagulation process was developed and tested, which achieved high harvesting efficiency, low contamination and significant energy savings.
BIORESOURCE TECHNOLOGY
(2022)
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)