Article
Engineering, Chemical
Abhishek Dutta, Sifat Kalam, Jongho Lee
Summary: This study examines the impact of membrane fouling on ammonia recovery in membrane contactors (MCs) and demonstrates the potential of isothermal MCs for reliable and sustainable ammonia recovery from wastewater.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Environmental
Yuan Yang, Weihang Deng, Lulu Zha, Junjie Qiu, Yisong Hu, Yanzheng Liu, Rong Chen
Summary: This study proposes a novel electroflocculation-membrane (EFM) reactor for pre-concentrating domestic wastewater (DWW) and compares it with a conventional direct membrane filtration (DMF) reactor. The EFM shows superior performance in terms of organic recovery efficiency and membrane fouling mitigation compared to DMF.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Chemistry, Multidisciplinary
Weikun Chen, Stefan Grimberg, Shane Rogers, Taeyoung Kim
Summary: A new electrochemical method utilizing a proton-mediated redox couple was developed to selectively recover ammonia from wastewater by increasing solution pH. This method demonstrated successful separation and recovery of ammonia with low energy consumption.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Engineering, Environmental
Jinlong Wang, Xiaobin Tang, Yuyao Liu, Binghan Xie, Guibai Li, Heng Liang
Summary: The coupling of vermifiltration (VF) and self-sustained ultrafiltration (SUF) in this study achieved effective removal of dissolved pollutants and various microorganisms, while also improving membrane flux to ensure water safety. The synergistic effects among the modified biofouling layer structure, reduction of extracellular polymeric substances, and increase of inorganics contents contributed to the improved membrane flux, with further enhancement observed with the usage of reflux.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Engineering, Chemical
Feng Li, Chenyi Fang, Wei Liu, Liming Yang, Bingyi Guo, Sui Zhang
Summary: High permeability and good fouling resistance can save energy and maximize freshwater output for desalination. By optimizing operating parameters and fabricating membranes with excellent performance, significant water recovery and energy savings can be achieved.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Environmental
Xinyi Wang, Sungju Im, Bongyeon Jung, Jishan Wu, Arpita Iddya, Quezada-Renteria A. Javier, Minhao Xiao, Shengcun Ma, Sidan Lu, Byun Jaewon, Jeffrey Zhang, Zhiyong Jason Ren, Christos T. T. Maravelias, Eric M. V. Hoek, David Jassby
Summary: Low-cost and simple recovery of ammonia from wastewater is achieved using a carbon fiber-based electrochemical membrane contactor. The membrane consists of a porous carbon cloth and a hydrophobic polypropylene support, forming an electrically conductive membrane. By applying a cathodic potential, ammonium ions are transformed into volatile ammonia and stripped across the hydrophobic membrane using an acid-stripping solution. The membrane showed a high ammonia flux and sensitivity to current density and acid circulation rate.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Cong Chen, Zhinan Dai, Yifan Li, Qin Zeng, Yang Yu, Xin Wang, Changyong Zhang, Le Han
Summary: This study proposes a novel membrane stripping process by integrating a cation exchange membrane (CEM) in alkali-driven Donnan dialysis prior to hydrophobic gas permeable membranes (GPMs) for efficient ammonia recovery. The new process significantly mitigates membrane fouling and shows potential for ammonia recovery from high-strength complex streams.
Article
Engineering, Chemical
Chang Liu, Liang Zhu, Rongping Ji, Shanfu Tang
Summary: A hybrid ultrasonic stripping-membrane distillation (US-MD) system was established for efficient purification of mariculture wastewater. The US pretreatment significantly improved NH4+-N removal without pH adjustment and promoted protein denaturation and salt crystallization. With a period of standing treatment between US and MD, denatured protein floccules and salt crystals could be effectively removed, reducing fouling behavior. This highlights the importance of standing treatment in the US-MD system.
Article
Environmental Sciences
Selina Hube, Seonki Lee, Tzyy Haur Chong, Sigurdur Brynjolfsson, Bing Wu
Summary: In this study, the performance of two GDM reactors operated at different temperatures for treating primary wastewater effluent was investigated. Despite less efficient removal of biodegradable organics at 8°C, both systems showed comparable fouling resistance distribution patterns. Cleaning effectiveness followed the sequence of ultrasonication-enhanced physical cleaning, two-phase flow cleaning, chemical-enhanced physical cleaning, and physical cleaning, regardless of temperature. The presence of periodic cleaning led to differences in dominant microbial communities in the cake layers, but the temperature did not affect permeate quality, which met EU discharge standards.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Bing Zhang, Jing Shen, Jianhui Xiong, Yu Shen, Bing Zhang, Wenxin Shi
Summary: This study investigates the effects of various factors on the efficiency and membrane fouling during ammonia rejection by direct contact membrane distillation (DCMD) in recirculating aquaculture. It found that the elevation of ammonia concentration led to an increase in concentration polarization, resulting in elevated rejection for ammonia and aggravated membrane fouling. Lower temperature, pH, and flow rate were found to be more favorable for ammonia rejection.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Chungheon Shin, Sebastien H. Tilmans, Felipe Chen, Perry L. McCarty, Craig S. Criddle
Summary: Our study demonstrates net energy positive operation of a pilot-scale anaerobic secondary treatment system in a temperate climate, utilizing a second-generation anaerobic fluidized membrane bioreactor (SAF-MBR 2.0) to treat domestic wastewater efficiently. Energy recovery from produced methane exceeds energy consumption due to fluidization and gas sparging, optimizing treatment costs.
Article
Green & Sustainable Science & Technology
Suellen Pereira Espindola, Mario Pronk, Jure Zlopasa, Stephen J. Picken, Mark C. M. van Loosdrecht
Summary: This study focuses on extracting cellulose from wastewater solids and obtaining high-purity cellulose nanocrystals through acid hydrolysis. The cellulose derived from wastewater shows similar properties to commercial nanocrystals, with high cellulose content and crystallinity. The use of wastewater-derived cellulose in the preparation of nanocellulose for bio-nanocomposites demonstrates a positive impact on the mechanical properties of the composite materials.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Chemical
Lei Wen, Lu Elfa Peng, Xiao-yan Li
Summary: In this study, a contactless membrane distillation (MD) system was developed to effectively recover ammonia from waste sludge with significantly reduced membrane fouling issues. The new system achieved high NH3 recovery rates in short operation times, outperforming conventional MD systems which failed due to membrane fouling after 12 hours. This innovative contactless MD technology has the potential to recover ammonia from various waste liquids efficiently.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Review
Engineering, Chemical
Yingyuan Zhu, Haiqing Chang, Zhongsen Yan, Caihong Liu, Ying Liang, Fangshu Qu, Heng Liang, Radisav D. Vidic
Summary: This comprehensive review summarizes the practical applications and mass transfer models of ammonia recovery from wastewater using membrane distillation and membrane contactor technologies. The review found that the operating conditions played a significant role in ammonia removal, while the characteristics of the feed and permeate solutions had a relatively smaller impact. The characteristics of the membrane and devices were of great interest in research.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Review
Engineering, Environmental
Irene Gonzalez-Salgado, Christelle Guigui, Mathieu Sperandio
Summary: Technologies for recovering nitrogen from wastewater for alternative fertilizer production have gained global attention. Transmembrane chemical absorption, using hydrophobic membrane contactors, is a promising process for recovering ammonia from wastewater to produce ammonium-based products. However, challenges such as wastewater pretreatment, membrane fouling, and wetting need to be addressed in order to fully utilize this technology.
CHEMICAL ENGINEERING JOURNAL
(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)