Article
Environmental Sciences
Mengchang Xu, Wenhu Zhou, Xuncai Chen, Ying Zhou, Binsheng He, Songwen Tan
Summary: Wastewaters containing disinfectants, such as NaClO, can be effectively treated in a saline MBBR-MBR system with marine microorganisms. Low concentrations of NaCl can impact bioactivity and lead to membrane biofouling. The highest removal efficiencies for COD and NH3-N were observed at a salinity of 30 g/L in marine bioreactors.
Article
Engineering, Chemical
Liumo Ren, Shuili Yu, Haijun Yang, Lei Li, Luyang Cai, Qing Xia, Zhiyuan Shi, Guicai Liu
Summary: The study systematically investigated the aging effects of NaClO on PVDF ultrafiltration membranes, finding a significant decline in antifouling performance for aged membranes, with stabilized fouling layers leading to increased irreversible fouling resistance. The intermolecular forces in combination with the interfacial free energies were used to evaluate the fouling behaviors of aged membranes, indicating a more spontaneous foulant-membrane adhesion and reduced flux recovery after physical cleaning. Comparatively, foulant-membrane interfacial free energies were found to be more sensitive and reliable indicators of membrane fouling.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Huarong Yu, Siyuan Shangguan, Chenyu Xie, Haiyang Yang, Chunhai Wei, Hongwei Rong, Fangshu Qu
Summary: This study investigated the aging of different membranes in MBRs for textile wastewater treatment, finding that the PVDF membrane was most susceptible to chemical cleaning.
Article
Biochemistry & Molecular Biology
Wenxiu Zhang, Xiaoyi Xu, Guanghui Zhang, Shengjiang Jin, Lihua Dong, Ping Gu
Summary: An integrated membrane bioreactor (MBR) was used to treat wastewater from a thermal power plant, achieving a high removal rate of organic pollutants and meeting the discharge standards. Membrane fouling was mainly caused by the cake layer and concentration polarization. Membrane flux could be recovered through specific cleaning methods.
Article
Environmental Sciences
Adem Yurtsever, Erkan Basaran, Deniz Ucar, Erkan Sahinkaya
Summary: The study investigated the robustness of AnDMBR for synthetic textile wastewater treatment, finding that in the absence of sulfate addition, the removal rate of total COD and filtered COD was 91% and 93% respectively, but decreased to 79% after sulfate addition. The suspended solids concentration in textile wastewater was low, while the dye removal rate was high.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agricultural Engineering
Jialing Ni, Jiayuan Ji, Kengo Kubota, Yu-You Li
Summary: This study investigated the concentration-dependent effects of sodium hypochlorite on biodegradation performance and microbial activity. The results showed that methane production and microbial community were almost unaffected within a certain concentration range. At high concentrations, microbial products could protect or recover the activity of anaerobic microorganisms.
BIORESOURCE TECHNOLOGY
(2022)
Review
Agricultural Engineering
Thanh Ngoc-Dan Cao, Xuan-Thanh Bui, Linh-Thy Le, Bao-Trong Dang, Duyen Phuc-Hanh Tran, Thi-Kim-Quyen Vo, Huu-Tuan Tran, Thanh-Binh Nguyen, Hussnain Mukhtar, Shu-Yuan Pan, Sunita Varjani, Huu Hao Ngo, Thi-Dieu-Hien Vo
Summary: The discharged saline wastewater has a severe impact on the aquatic environment due to the limited treatment performance of many wastewater treatment techniques. Membrane bioreactor (MBR) processes, on the other hand, have shown potential in treating saline wastewater under different salinity levels depending on the adaptation of the microbial community. This study systematically reviews the application of MBR in the treatment of saline wastewater, focusing on microbial structure and treatment efficiencies. The concept of carbon dioxide capture and storage is also proposed for MBR-based saline wastewater treatment technologies to achieve zero emission targets in the circular economy.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Chemical
Hengyang Mao, Shouyong Zhou, Shuo Shi, Ailian Xue, Meisheng Li, Jianjian Cai, Yijiang Zhao, Weihong Xing
Summary: Membrane technology can minimize virus spread during pandemics, but biofouling limits its efficiency. A composite membrane of PVDF and t-ATP has been developed, with t-ATP acting as a hydrophilic modifier and releasing adhesion between membrane and biofoulants through temperature changes. The modified membrane exhibits superior biofouling resistance and easy biofoulant removal through a temperature-change coupling ultrasonic cleaning process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Xingfu Xue
Summary: This study summarizes several aspects to be considered in the design of ultrasonic on-line cleaning device in a membrane bioreactor, based on the study of the design principle, technology, and application of ultrasonic cleaning. The results of a 60-day continuous test show that ultrasonic cleaning with specific parameters has a good cleaning effect on Polyvinylidene Fluoride membrane without adverse effects on microorganism growth and effluent quality.
INTERNATIONAL CONFERENCE ON OPTOELECTRONIC MATERIALS AND DEVICES (ICOMD 2021)
(2022)
Article
Engineering, Environmental
Rong Huang, Tong Zhang, Qiaoying Wang, Hongbo Gu, Zhen Zhou, Zhichao Wu, Zhiwei Wang
Summary: Membrane fouling can be effectively alleviated by using conductive membrane and external electric field in membrane bioreactor. This study investigated the degradation mechanisms and cleaning efficiency of organic foulants on composite conductive microfiltration membranes. It was found that electrochemical oxidation and sodium hypochlorite (NaClO) showed high degradation efficiency for bovine serum albumin (BSA). Electrochemical oxidation converted BSA into foams and flocs, while NaClO oxidation decomposed BSA into small molecules. The combination of electric fields and NaClO exhibited great membrane cleaning efficiency and reduced secondary pollution.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Zeyuan Gao, Zhi-Ping Zhao, Weiwei Cai
Summary: This study simulated reactions between PACs and NaClO under current online membrane cleaning practices. The results showed that NaClO-induced PAC variations weakened PAC adsorption capacities and increased PAC deposition on membrane surfaces. Applying altered PACs in PAC/UF water treatment system led to aggravated membrane fouling and decreased surface water treatment performances.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Shams Forruque Ahmed, Fatema Mehejabin, Adiba Momtahin, Nuzaba Tasannum, Nishat Tasnim Faria, M. Mofijur, Anh Tuan Hoang, Dai-Viet N. Vo, T. M. Mahlia
Summary: Membrane technology is gaining popularity in wastewater treatment due to its cost-effectiveness and environmentally friendly characteristics. This review addresses the key techniques for improving membrane performance and highlights the challenges and solutions associated with the membrane process. Hybrid techniques are also explored for enhancing membrane performance. The control strategies for membrane fouling still require optimization, and more research is needed for long-term direct membrane filtering operation.
Article
Engineering, Environmental
Saleh Najafi Chaleshtori, Mehrdad Shamskilani, Azadeh Babaei, Masoomeh Behrang
Summary: This study investigated the performance of microalgal-activated sludge membrane bioreactor (MAS-MBR) as a self-biological treatment or post-treatment for conventional biological treatments. The results showed that cultivating mixed algae/sludge in raw wastewater achieved the best performance in terms of ammonium and phosphorus removal efficiency, as well as the highest oxygen production rate and oxygen uptake rate. However, membrane fouling was increased in this case, highlighting the need for regular membrane cleaning.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Fatemeh Dolatkhah, Toraj Mohammadi, Maryam Ahmadzadeh Tofighy
Summary: In this study, charcoal-carbon nanomaterial was used to modify the polysulfone-based hollow fiber ultrafiltration membrane. The optimized membrane showed increased porosity and mean pore size, reduced surface roughness, and improved hydrophilicity. It also demonstrated high COD removal and protein rejection, as well as a high pure water flux.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Review
Agricultural Engineering
Akashdeep Singh Oberoi, K. C. Surendra, Di Wu, Hui Lu, Jonathan W. C. Wong, Samir Kumar Khanal
Summary: This review critically examines the behavior and removal of pharmaceuticals in anaerobic membrane bioreactors (AnMBR), focusing on removal efficiencies, mechanisms, influencing factors, and microbial community structures. The inhibitory effects of pharmaceuticals on AnMBR performance and membrane fouling are discussed, and the importance of membrane biofouling layer and its components in pharmaceuticals removal is highlighted. Recent advancements in AnMBR configurations for membrane fouling control and enhanced pharmaceuticals removal are also systematically discussed.
BIORESOURCE TECHNOLOGY
(2022)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)