Article
Environmental Sciences
Wenqiang Wang, Dong Li, Shuai Li, Ziqing Wei, Huiping Zeng, Jie Zhang
Summary: A study on anammox granulation in CFR and SBR showed that CFR performed better under decreasing temperature and no strict anaerobic condition, providing a stable and suitable environment for AnAOB to self-aggregate and secrete EPS. Granules in CFR had better rheological properties than that in SBR.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Aiyu Zhang, Shuai Wang, Mingming Yang, Hanxiang Li, Han Wang, Fang Fang, Jinsong Guo
Summary: This study investigated the effects of salinity on the aggregation and surface characteristics of Anammox granules, revealing that increased salt concentration led to a decrease in granule size, aggregation index, and extracellular protein to polysaccharide ratio. Analysis showed that higher salinity reduced zeta potential and hydrophobicity of the sludge while increasing the repulsive barrier. Additionally, changes in EPS surface groups reduced hydrophobicity of Anammox granules, but did not enhance aggregation.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Wen-Jie Ma, Jiang-Tao Zhang, Ye Wang, Gui-Feng Li, Xin-Xin Wu, Yu-Xi Yao, Ya-Fei Cheng, Bao-Cheng Huang, Ren-Cun Jin
Summary: Arsenic has a negative impact on anammox treatment technology, while extracellular polymeric substances (EPS) play an important role in resisting this toxicity. In this study, it was found that proteins are the main component in EPS that forms complexes with arsenic, and complexation and hydrophobic interactions are the main forces preventing arsenic invasion.
Article
Agricultural Engineering
Jinxing Wang, Jidong Liang, Li Sun, Jianqing Shen, Meng Wang
Summary: The study demonstrates that the addition of PVA gel beads can significantly improve the PN/A process for treating synthetic and municipal wastewater, enhancing total nitrogen removal efficiency. The microbial stratification within the PVA gel beads facilitates synergistic cooperation and protection of different bacteria, providing a promising solution for wastewater treatment.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Gui-Feng Li, Zhi-Qi Ren, Ye Wang, Jing-Peng Li, Wen-Jie Ma, Ya-Fei Cheng, Bao-Cheng Huang, Ren-Cun Jin
Summary: This study explored the interaction between phenol and EPSs as well as the Amt domain at the molecular level. The results showed that EPSs played a protective role in preventing phenol toxicity, while the interaction between phenol and the Amt domain affected the activity of Anammox sludge.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biotechnology & Applied Microbiology
Deyuan Jin, Gaigai Li, Dingying Ning, Wuke Guo, Wenqing Tian, Jidong Liang, Hua Ji
Summary: In this study, anammox biofilter (A-BF) was tested as an advanced nitrogen removal process for municipal wastewater. The results showed that A-BF could be successfully started up and achieve a high nitrogen removal rate under low TN concentration and high nitrogen load conditions. The ceramsite bed in the A-BF played a crucial role in the formation of biofilm and enrichment of functional microorganisms.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Engineering, Environmental
Liang Qiao, Jian Cheng, Na Meng, Yulan Qian, Ye Yuan, Yan Li, Tianming Chen, Yanqiu Zhang, Cheng Ding
Summary: The study investigated the adsorption effect of EPS from AnAOB on different substrates and found that EPS proteins can effectively adsorb NH4+-N and NO2--N, playing a role in bacterial growth. EPS proteins were consistent with those involved in the anammox reaction in cells, and the Langmuir model showed high maximum adsorption concentrations for NO2--N.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Agricultural Engineering
Huan Li, Teng Cai, Yijing Gao, Qicai Dai, Xinyu Liu, Xue Chen, Xueqin Lu, Guangyin Zhen
Summary: An upflow blanket filter (UBF) reactor with porous fixed cylinder carriers was used to investigate the formation mechanism of anammox granules. The UBF achieved the highest nitrogen removal efficiency of 93.19 +/- 3.39% at a nitrogen loading rate of 3.6 kg-N/m3/d and HRT of 2 h. Tryptophan-like proteins were found to be vital for granule formation, and the analysis of 16s rRNA revealed the important role of SBR1031 in cell aggregation. The anammox granules developed a two-layered spatial structure consisting of an outer-layer of ammonia oxidizing bacteria and an inner-core of anaerobic ammonia oxidizing bacteria. Introduction of porous fixed cylinder carriers effectively prevented biomass loss and flotation.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jing Zhang, Lin-hua Zhang, Peng Sun, Jie-ya He, Jun Li
Summary: This study revealed the crucial role of AHLs in maintaining the stability and activity of Anammox granules at 11-23 degrees C. Exogenous C8-HSL significantly improved granule stability at temperatures of 11-16 degrees C, while C6-HSL and 3OC8-HSL promoted granule activity at temperatures of 11-23 degrees C. This research provides a novel approach to enhance the performance of Anammox granules at low temperatures.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Engineering, Environmental
Wen-Jie Ma, Zhi-Qi Ren, Lin-Qian Yu, Xin-Xin Wu, Yu-Xi Yao, Jiang-Tao Zhang, Jie-Yun Guo, Nian-Si Fan, Ren-Cun Jin
Summary: The study found that anammox bacteria exhibit resistance to arsenic stress, but nitrogen removal capacity deteriorates significantly under the joint action of arsenic and sulfonamides. Arsenic and sulfonamides also impact the protection of EPS and denitrification capacity.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Environmental Sciences
Parin Izadi, Parnian Izadi, Ahmed Eldyasti
Summary: Anaerobic ammonia oxidation (anammox) process is a favorable and innovative method for treating nitrogen-rich wastewater, mainly operated through biofilm or granular sludge structures to enhance stability. Extracellular Polymeric Substance (EPS) plays important roles in promoting biofilm properties and biopolymer production, contributing to waste sludge recovery and environmental sustainability.
Article
Environmental Sciences
Shuya Wang, Fen Wang, Ruying Li, Min Ji
Summary: The study investigates the performance of using the anaerobic ammonia oxidation (anammox) biofilm process to treat iron-containing industrial wastewater with a low carbon-nitrogen ratio. It is found that low levels of Fe (III) do not affect the performance of anammox nitrogen removal, but high concentrations have a negative effect. The inhibitory effect can be reversed by introducing the ferric ion complex EDTA center dot 2Na into the system.
Article
Engineering, Environmental
Biru Zhou, Guangjiao Chen, Chifei Dong, Yushi Jiang, Haoyu Chen, Tong Ouyang, Yu-You Li, Yanlong Zhang
Summary: Fe(II) has concentration-dependent effects on specific anammox activity (SAA) and reactor performance, with low concentrations enhancing SAA and high concentrations inhibiting SAA. Long-term exposure to low Fe(II) concentrations can improve the tolerance of anammox to Fe(II). Fe(II) also affects extracellular polymeric substance (EPS) and the performance of anammox granules.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Agricultural Engineering
Jinxing Wang, Jidong Liang
Summary: The newly developed carrier granular sludge (CGS) with gel beads assistance showed higher intensity and anammox activity than natural granular sludge (NGS). The gel beads provided a stable framework and unimpeded mass transfer, improving sludge activity and overall performance. The results suggest potential application of CGS in full-scale anammox processes.
BIORESOURCE TECHNOLOGY
(2021)
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
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)