Article
Environmental Sciences
Yu Jin, Wei Xiong, Nan Zhou, Gang Xiao, Shaojie Wang, Haijia Su
Summary: The structure of bacterial community in seed sludge varies greatly from different sources, influencing the characteristics of sludge. This study investigated the role of different functional bacteria in AGS granulation and pollutant degradation using seed sludge obtained from different sources. Results showed that the initial bacterial community significantly affected AGS formation and pollutants removal, with seed sludge from municipal sludge granulating faster and achieving better settling performance and granulation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Microbiology
Siew Herng Chan, Muhammad Hafiz Ismail, Chuan Hao Tan, Scott A. Rice, Diane McDougald
Summary: The study found that predation by protozoa and bacteriophage positively correlated with the formation of aerobic granules. The increase in abundance of filamentous phages may promote the structural formation of granules, while the absence of protozoa after chemical treatment delayed the initiation of granules formation.
Article
Engineering, Environmental
Marie Riisgaard-Jensen, Giulia Dottorini, Marta Nierychlo, Per Halkjaer Nielsen
Summary: The immigration of bacteria in influent wastewater has a strong impact on the microbial community of activated sludge in wastewater treatment plants. The use of primary settlers can selectively increase or reduce the abundance of certain bacteria. The process of primary settling changes the microbial community of influent wastewater and can be a candidate for upstream control to optimize the assembly of microbial communities in activated sludge.
Article
Environmental Sciences
Lilong Yan, Wanting Chen, Caixu Wang, Shuang Liu, Cong Liu, Liangbin Yu, Yaoqi Zheng, Jishuang Jiang, Yaoli Zhang, Changlei Xia, Su Shiung Lam
Summary: This study investigated the influence of high concentration tetracycline on the formation of aerobic granular sludge, showing that tetracycline can accelerate sludge granulation, induce microbial community succession, and increase the presence of tetracycline-degrading bacteria or antibiotic resistance genus.
Article
Green & Sustainable Science & Technology
Yingying Yang, Xueyang Hu, Xinyu Zhang, Xiurong Chen, Xiao Wei, Zhichong Chen, Hao Gu, Shanshan Linghu, Yuqing Gao
Summary: This study investigates the degradation of resorcinol in domestic coal gas wastewater by aerobic activated sludge. The results show that the effluent resorcinol concentration and chemical oxygen demand concentration tend to increase and then decrease with increasing influent resorcinol concentration. The study also identifies the dominant bacterial population involved in the degradation process.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Sadiye Kosar, Onur Isik, Yasemin Akdag, Hazal Gulhan, Ismail Koyuncu, Hale Ozgun, Mustafa Evren Ersahin
Summary: Characteristics of seed sludge are crucial for the granulation and treatment performance of aerobic granular sludge process. Different types of seed sludge can affect the size of granules and the efficiency of nitrogen and phosphorus removal in the sludge.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Yanqiong Wang, Hongwu Wang, Hongbin Chen
Summary: This study investigated the impact of 50% and 100% edible oil on activated sludge in comparison to glucose. Results showed that both concentrations of edible oil influenced the system's performance, with 100% oil having a more significant negative effect. Edible oil inhibited sludge settling performance through promoting the formation of floating particles and enrichment of filamentous bacteria.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Long Cheng, Mingyu Wei, Qixing Hu, Bingtang Li, Bo Li, Wenjia Wang, Zaidun Naji Abudi, Zhiquan Hu
Summary: This study investigated the establishment and stable operation of enhanced biological phosphorus removal by aerobic granular sludge under mixed stress conditions induced by multiple antibiotics. The results showed that the AGS system was efficient in removing TP, COD, and NH4+-N, and that the microorganisms in the AGS system secreted more polysaccharides, which contributed to the system's tolerance to antibiotics and facilitated granulation by enhancing protein production. The study proposed a three-stage granulation mechanism based on analysis of extracellular polymeric substances, XDLVO theory, and microbial community.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Yi-Jing Shi, Lei Yang, Sheng-Fa Liao, Li-Guo Zhang, Zi-Cong Liao, Min-Yi Lan, Feng Sun, Guang-Guo Ying
Summary: This study found that under high levels of ammonium, aerobic granular sludge (AGS) showed good removal efficiency for three fluoroquinolones (FQs), with ciprofloxacin (CFX) and norfloxacin (NFX) being more effectively removed. Antibiotic resistance genes (ARGs) and mobile genetic elements (MGEs) related to FQs tended to exist in denitrifying bacteria, indicating a preference for denitrifiers in the distribution of these elements.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Yu Jin, Wei Xiong, Dan Liu, Zhiqing Wu, Gang Xiao, Shaojie Wang, Haijia Su
Summary: By developing a straw foam-based aerobic granular sludge (SF-AGS), the drug tolerance and biodegradation efficiency of atrazine (ATZ) can be greatly improved. The results showed that ATZ, as well as chemical oxygen demand (COD), ammonium nitrogen (NH4+-N), total phosphorus (TP), and total nitrogen (TN), were effectively removed within 6 hours, with removal efficiencies as high as 93.37%, 85.33%, 84.7%, and 70%, respectively. The SF-AGS also stimulated the secretion of three times more extracellular polymers by microbial consortia. The study demonstrated the feasibility of SF-AGS for the treatment of ATZ-laden low-strength wastewater.
Article
Environmental Sciences
Xiaoying Zheng, Zongshuo Han, Xiaoyao Shao, Zhilin Zhao, Huijie Zhang, Tao Lin, Shanshan Yang, Chao Zhou
Summary: Microplastics, specifically polyethylene microplastics (PE MPs), have been found to significantly impact the aerobic granular sludge (AGS) in wastewater treatment plants. The presence of PE MPs affects the particle structure, settling properties, particle size distribution, and extracellular polymeric substance characteristics of the AGS. Exposure to PE MPs also leads to an increase in reactive oxygen species and lactate dehydrogenase, resulting in disruption of cellular structure. Additionally, the activities of enzymes related to denitrification and phosphorus removal decrease.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Agricultural Engineering
Wei Xiong, Shaojie Wang, Qiuhua Zhang, Yiran Hou, Yu Jin, Biqiang Chen, Haijia Su
Summary: This study evaluated the effect of neglected PAN MPs on AGS at different concentrations. The results showed that 1 and 10 mg/L concentrations of PAN MPs had no significant impact on granular stability and nutrient removal, but greatly increased EPS secretion. However, at 100 mg/L, PAN MPs severely damaged the granule structure. Microbial community analysis revealed the dominance of phylum Proteobacteria in resisting PAN MPs. Metabolic analysis also showed significant inhibition of genes related to denitrification pathway and membrane transport under PAN MPs stress. This study provides additional information on microplastics wastewater treatment using AGS.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Mingyue Geng, Shijie You, Haijuan Guo, Fang Ma, Xiao Xiao, Xiping Ma
Summary: This study investigated a system where flocs and granules coexist, and compared the differences between them on a proteomic level. The results showed that the coexistence system had excellent nutrient removal and different functional bacteria in flocs and granules.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Huihua Lin, Shichang Sun, Zipeng Lin, Manting Chen, Lin Fang, Rui Ma, Junhao Lin, Juan Luo
Summary: The inoculation of bio-carrier promotes rapid granulation and enhances microbial secretion of EPS, leading to better granule morphology. However, stability issues may arise in the long run due to strong shearing forces causing disintegration of the granules.
Article
Engineering, Environmental
Lijian Zhao, Chengyuan Su, Anliu Wang, Cuiping Fan, Xinyue Huang, Feiqian Li, Ruting Li
Summary: This study found that sodium acetate had the highest efficiency in removing dissolved organic nitrogen in an aerobic granular sludge system. Analysis of microbial communities showed that members of Paracoccus and Anaerorhabdus were less in glucose and sucrose groups. Additionally, the sodium acetate group had the highest abundance of membrane transport function genes.
JOURNAL OF WATER PROCESS ENGINEERING
(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)