Article
Agricultural Engineering
Wenda Chen, Tao Yu, Dongdong Xu, Wenji Li, Chao Pan, Yiyu Li, Zhuo Zeng, Da Kang, Shengdao Shan, Ping Zheng
Summary: A new DOuble Circulation Anaerobic Sludge bed reactor was developed to enhance the production of endogenous sludge, balancing the discharge of calcified sludge. The method was proven to reduce sludge washout rate and increase sludge proliferation rate effectively.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Wenda Chen, Huiming Tang, Wenji Li, Da Kang, Baolan Hu, Ping Zheng, Meng Zhang
Summary: By comparing an ecological anaerobic reactor (EAR) with a physical anaerobic reactor (PAR), it was found that EAR achieved a higher organic loading rate (OLR) due to its ecological distribution, while PAR had a lower OLR due to its physical distribution. These findings suggest that promoting ecological distribution and weakening hydraulic selection can improve reactor performance.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Yanxu Liu, Wen Liu, Yu-You Li, Jianyong Liu
Summary: Layered inoculation of anaerobic digestion and anammox granular sludges can lead to rapid start-up of anammox, with increased nitrogen loading rate and nitrogen removal rate. The study found that AD granular sludge exhibited anammox activity and could be cultured into anammox granular sludge for accelerated reactor start-up. Adsorption, interception, and domestication enhanced the biomass of anammox bacteria, addressing slow start-up issues in industrial applications.
BIORESOURCE TECHNOLOGY
(2021)
Article
Energy & Fuels
Yufang Wei, Hongbing Zhao, Xuejiao Qi, Tianxue Yang, Junping Zhang, Wangmi Chen, Mingxiao Li, Beidou Xi
Summary: The magnetite nanoparticle-anaerobic granular sludge complex (Fe-AnGS) was used in microbial electrolysis cells (MEC) to enhance the direct interspecies electron transfer (DIET) pathway for biogas production. Fe-AnGS improved magnetization and conductivity, and enriched specific electrogenic microorganisms. It also increased the gene expression for carbon dioxide reduction and enhanced methane production. Inoculation of Fe-AnGS in MEC established and enhanced the DIET pathway for methane production.
Review
Environmental Sciences
Anna Christine Trego, Simon Mills, Gavin Collins
Summary: Anaerobic digestion is recognized as a sustainable method for waste management, producing methane-rich biogas. Different specialized granules, including anaerobic and aerobic granules, have opened up new opportunities in wastewater treatment and resource recovery biotechnology. Each type of granule has unique characteristics, biochemical processes, and microbial community compositions.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Ana S. Oliveira, Catarina L. Amorim, Jure Zlopasa, Mark van Loosdrecht, Paula M. L. Castro
Summary: This study successfully used extracellular polymeric substances (EPS) from aerobic granular sludge as a natural carrier to immobilize a specific microbial strain capable of degrading 2-fluorophenol. The method showed significant degradation and improved nutrient removal efficiency in wastewater containing 2-FP.
Article
Agricultural Engineering
Han Yan, Jianzheng Li, Jia Meng, Jiuling Li, Avinash Kumar Jha, Yafei Zhang, Yiyang Fan, Xin Wang
Summary: The performance of anaerobic sludge and microbial social behaviors in an expanded granular sludge bed (EGSB) were evaluated by increasing reflux ratio from 50% to 500% in stages. The study found that a reflux ratio of 100% - 200% was most favorable for EGSB with a methane production of 2.4 m3/m3.d. Acylhomoserine lactones (AHLs)-mediated quorum sensing (QS) played a key role in balancing microbial populations and enhancing the anaerobic digestion process.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Chemical
Huihui Zhou, Defeng Xing, Jun Ma, Yanyan Su, Yifeng Zhang
Summary: Bioelectrochemical anaerobic digestion (BEAD) is an attractive method for enhancing biogas production. This study explores the use of intact anaerobic granular sludge (AGS) as a biocatalyst for efficient methane production. The BEAD system was optimized by controlling the applied voltage and acetate load, and the AGS-based system showed promising results for degrading highly concentrated organic waste. The microbial communities at the anode and cathode were also analyzed.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Mohammad Nabi, Jinsong Liang, Panyue Zhang, Yan Wu, Chuan Fu, Siqi Wang, Junpei Ye, Dawen Gao, Fayyaz Ali Shah, Jiaqi Dai
Summary: The study investigated biogas production from sewage sludge pretreated by high pressure homogenization in an expanded granular sludge blanket (EGSB) reactor. By optimizing parameters, biogas production and organic degradation efficiency were significantly improved.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Zhanyao Zheng, Junlin Ji, Hong Yang, Fang Yin, Wudi Zhang, Xingling Zhao, Changmei Wang, Kai Wu, Jing Liu
Summary: In this study, the anaerobic treatment and microbial characteristics of high-concentration corn alcohol wastewater were investigated. It was found that the self-designed anaerobic expanded granular sludge bed (EGSB) reactor was able to efficiently remove chemical oxygen demand and produce methane gas when operated at the appropriate temperature and organic loading rate. After the experiment, sludge granulation was achieved and Methanosaeta was identified as the dominant microorganism in the reactor.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Review
Engineering, Environmental
Zhiwei Wang, Keyang Jiang, Yunpeng Zhu, Ling Liu, Xuelian Zou, Xiao Yang, Yihu Xu, Jian Zhang, Yubao Chen, Wenhua Gao, Shuangfei Wang
Summary: During the anaerobic treatment of high-calcium organic wastewater, the formation of calcium carbonate or calcium phosphate precipitates on the biofilm surface affects the mass transfer and microbial breeding space of anaerobic granular sludge (AnGS), resulting in biomass reduction and decreased AnGS activity. This study analyzed the mechanisms of AnGS calcification and the migration of calcium precipitation into the interior of AnGS. Traditional methods for controlling calcification and removing calcified AnGS are costly and ineffective. A new approach for resolving AnGS calcification is proposed by optimizing flora and improving sludge activity.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Jialing Tian, Yi Han, Pengna Yin, Jianbing Zhang, Tingting Guo, Haibo Li, Yanan Hou, Yuanyuan Song, Jianbo Guo
Summary: In this study, DPR-GS was successfully cultivated in a reactor and showed excellent perchlorate removal efficiency. Microbial community analysis revealed that the dominant genera in mature DPR-GS were Sulfurospirillum and Acinetobacter. 3D-EEM analysis was used to investigate the changes in EPS components during the starvation period.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Lei Zhang, Yiyang Yuan, Yingdi Zhang, Yang Liu
Summary: This study investigates the feasibility of using calcium hypochlorite (Ca(ClO)(2)) to improve the thermophilic digestion of anaerobic wasted activated sludge (WAS). The results show that Ca(ClO)(2) pretreatment significantly enhances the removal efficiency and methane yield of WAS under low organic loading rate (OLR) conditions. However, the pretreatment effect is not significant under high OLR conditions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Juan Castilla-Archilla, Danfei Zeng, Yifeng Zhang, Piet N. L. Lens
Summary: A continuous production and in-line recovery of VFAs was achieved by coupling an electrochemical cell (EC) to the recycling line of an up-flow anaerobic sludge bed (UASB) reactor. The EC allowed simultaneous recovery of VFAs while producing alkali equivalent and hydrogen, reducing caustic addition and promoting VFA production.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Agricultural Engineering
Hui Liu, Xiao Yang, Kaili Zhu, Wenhao Dang, Wencai Fu, Jian Zhang, Zhiwei Wang, Guoning Chen, Shuangfei Wang
Summary: This study suggests that electrocoagulation pretreatment can effectively mitigate the negative effects of micro stickies and Ca2+ on anaerobic granular sludge. By removing micro stickies and Ca2+ before anaerobic digestion, the functional microorganisms can thrive and the calcification of granular sludge can be delayed, leading to improved digestion performance.
INDUSTRIAL CROPS AND PRODUCTS
(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)