Article
Engineering, Chemical
Yusmel Gonzalez-Hernandez, Ulises Javier Jauregui-Haza
Summary: This article presents the modeling of a submerged membrane bioreactor (SMBR) using experimental values at laboratory and pilot scale for urban and hospital wastewater treatment, and successfully develops an improved model integrating a biological model with a membrane fouling model, with improved precision and calibration.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Green & Sustainable Science & Technology
Xueqin Lu, Chaoting Zheng, Guangyin Zhen, Yujie Tan, Yuhan Zhou, Zhongyi Zhang, Chengxin Niu, Wanjiang Li, Dilibaierkezi Kudisi, Yue Wang, Yu-You Li
Summary: The study on a lab-scale AnMBR treating low-strength methanolic wastewater demonstrated good performance and process stability, but membrane fouling due to the production of colloidal particles and soluble biopolymers remains a major challenge.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Jingxin Shi, Jiahui Wang, Shuhui Yang, Siqi Li, Jingchun Liu
Summary: This study investigated the mechanisms of membrane fouling in a commercial ceramic flat membrane bioreactor. It was found that the duration of backwash, charged particles, and suspended solids content are important factors influencing membrane fouling. Adjusting operating parameters and using appropriate cleaning methods can effectively reduce membrane fouling.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
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
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
Biotechnology & Applied Microbiology
Thi-Kim-Quyen Vo, Bao-Trong Dang, Huu Hao Ngo, Thanh-Tin Nguyen, Van-Truc Nguyen, Thi-Dieu-Hien Vo, Thi-Tra-My Ngo, Thanh-Binh Nguyen, Chitsan Lin, Kun-Yi Andrew Lin, Xuan-Thanh Bui
Summary: The Sponge membrane bioreactor (Sponge-MBR) demonstrated effective performance in treating tannery wastewater, despite the inhibition of suspended biomass growth by the wastewater. The attached biomass of sponge carriers significantly contributed to the removal of organic matters and a portion of total nitrogen. Additionally, the dynamic movement of sponge carriers helped reduce fouling rate in the system.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Environmental
Hau-Ming Chang, Shiao-Shing Chen, Shiang-Sheng Hsiao, Wen-Shing Chang, I-Chieh Chien, Chinh Cong Duong, Thi Xuan Quynh Nguyen
Summary: A hybrid system combining anaerobic osmotic membrane bioreactor (AnOMBR) and membrane distillation (MD) was developed to remove TMAH from wastewater while investigating microbial communities. Microfiltration extraction and regular physical cleaning were used to achieve efficient TMAH removal. Analysis of fluorescence excitation-emission matrix (FEEM) and 16S rRNA meta-genomics revealed important factors in membrane fouling and methane production.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Marek Gryta, Piotr Wozniak
Summary: This study investigated the application of microfiltration polypropylene (PP) membranes and polytetrafluoroethylene (PTFE) membranes for treating carwash wastewater. The fouling phenomenon limited the effectiveness of the process, but the PP membranes were able to effectively remove turbidity and Escherichia coli from the wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
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
Environmental Sciences
S. Gunes-Durak, A. S. Ciggin, N. Tufekci
Summary: The effects of polyvinylpyrrolidone modification on the performance of polyacrylonitrile and polyetherimide membranes in a submerged membrane bioreactor were studied. The performance of all membranes increased with an increase in sludge retention times, while the increase in organic loading rates decreased soluble microbial products. The modification with polyvinylpyrrolidone provided higher total permeate volumes with higher rejection of soluble microbial product fractions, especially in polyacrylonitrile membranes. Membrane fouling was found to be inversely proportional to the membrane pore size, with carbohydrates and proteins identified as the main foulants on the membrane surface. The modification of polyacrylonitrile with polyvinylpyrrolidone was determined to be an appropriate approach to improve treatment efficiency and membrane lifetime in a submerged membrane bioreactor operated at high sludge retention time.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Qilin Gu, Tze Chiang Albert Ng, Weijie Poh, Chin Ho Kirk, Zhiyang Lyu, Lei Zhang, John Wang, How Yong Ng
Summary: The rational design of ceramic membrane cross-sectional microstructure has been shown to improve membrane filtration efficacy without affecting rejection performance. Gradient membrane layers generated through 3D spray-coating technique showed higher pure water flux and lower membrane resistance, with better filtration performance in aerobic membrane bioreactors.
Article
Environmental Sciences
Mohammad Heidari Farsani, Reza Jalilzadeh Yengejeh, Alireza Hajiseyed Mirzahosseini, Masoud Monavari, Amir Hessam Hassani, Nezamaddin Mengelizadeh
Summary: Comparative study on the efficiency of SEMBR and MBR in the treatment of landfill leachate showed that SEMBR had significant improvements in the removal of COD, PO43--P, NH3+-N, UV254, and heavy metals, with a higher removal efficiency of humic acid substances and the possibility of further treatment in wastewater treatment plants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(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
Engineering, Chemical
Kaiqi Xiao, Kaichong Wang, Siqi Yu, Yao Yuan, Yangjie Qin, Ying An, Xiaodan Zhao, Zhen Zhou
Summary: A novel pretreatment process using chemically enhanced primary treatment (CEPT) and ammonia nitrogen ion exchange and regeneration (AIR) was proposed to improve membrane fouling in membrane bioreactors (MBRs). The pretreated MBRs showed comparable levels of COD and NH4+-N with conventional MBRs, but much lower concentrations of total nitrogen and total phosphorous. The pretreatment process effectively removed particles and soluble proteins, inhibited EPS secretion, and alleviated membrane fouling.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Yuyin Wang, Qiwei Chen, Yuxin Lin, Kuizu Su, Tianwei Hao, Li Liu, Guoping Sheng
Summary: Introduction of aerobic granules into FOMBRs can improve wastewater treatment efficiency, especially in the removal of ammonia-nitrogen. The results show that aerobic granule-based FOMBR achieved higher removal efficiency of ammonia-nitrogen compared to activated sludge-based FOMBR.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Polymer Science
Sutida Marthosa, Wirote Youravong, Chaiwat Kongmanklang, Watsa Khongnakorn
JOURNAL OF POLYMER ENGINEERING
(2019)
Article
Engineering, Environmental
W. Maknakorn, P. Jutaporn, W. Khongnakorn
WATER SCIENCE AND TECHNOLOGY
(2019)
Article
Engineering, Environmental
Watsa Khongnakorn, Weerapong Bootluck, Panitan Jutaporn
JOURNAL OF WATER PROCESS ENGINEERING
(2020)
Article
Chemistry, Analytical
Pankaj Kumar Jha, Watsa Khongnakorn, Chamorn Chawenjkigwanich, Md Shahariar Chowdhury, Kuaanan Techato
Summary: This paper reports the green synthesis of reduced graphene oxide (r-GO) nanomaterials using Callistemon viminalis leaf extract for the first time, which shows potential for water filtration. The synthesized r-GO nanomaterials were used to prepare a nanofilter membrane and effectively remove iron from water. Higher amounts of r-GO nanomaterials in the membrane resulted in better water flux and increased iron rejection rate.
Article
Biochemistry & Molecular Biology
Wiparat Chaipetch, Arisa Jaiyu, Panitan Jutaporn, Marc Heran, Watsa Khongnakorn
Summary: The study found that the formation and accumulation of protein EPS in the cake layer of a submerged anaerobic membrane bioreactor were the main contributors to membrane fouling. The attachment, adsorption, and entrapment of protein EPS in membrane pores were key processes, and the hydrophilic charge of proteins and polysaccharides influenced the adsorption mechanism.
Article
Chemistry, Physical
Weerapong Bootluck, Thawat Chittrakarn, Kuaanan Techato, Panitan Jutaporn, Watsa Khongnakorn
Summary: By synthesizing photocatalysts with hematite, titanium dioxide, and palladium nanoparticles, the efficiency and stability of photocatalytic hydrogen production were improved. The experimental results demonstrate the high potential of the ternary photocatalysts for hydrogen production.
Article
Environmental Sciences
Panitan Jutaporn, Watjanee Laolertworakul, Kitiyot Tungsudjawong, Watsa Khongnakorn, Suchat Leungprasert
Summary: This study investigated the relationships between the optical characteristics of DOM and their total THM-FP through fluorescence spectroscopy analysis, even at sites with different speciation of THMs.
Article
Biochemistry & Molecular Biology
Siti Hawa Mohamed Noor, Mohd Hafiz Dzarfan Othman, Watsa Khongnakorn, Oulavanh Sinsamphanh, Huda Abdullah, Mohd Hafiz Puteh, Tonni Agustiono Kurniawan, Hazirah Syahirah Zakria, Tijjani El-badawy, Ahmad Fauzi Ismail, Mukhlis A. Rahman, Juhana Jaafar
Summary: In this study, a Cu2O/PVDF dual layer hollow fiber membrane was used to remove BPA. The membrane showed high porosity, hydrophilicity, and high flux, and was able to effectively remove BPA under visible light irradiation.
Article
Biochemistry & Molecular Biology
Roziana Kamaludin, Lubna Abdul Majid, Mohd Hafiz Dzarfan Othman, Sumarni Mansur, Siti Hamimah Sheikh Abdul Kadir, Keng Yinn Wong, Watsa Khongnakorn, Mohd Hafiz Puteh
Summary: The study fabricated antibacterial hollow fiber membranes with zinc oxide nanoparticles, improving membrane anti-biofouling characteristics and achieving good pure water flux and protein rejection rate.
Article
Biochemistry & Molecular Biology
Nurul Natasha Mohammad Jafri, Juhana Jaafar, Farhana Aziz, Wan Norharyati Wan Salleh, Norhaniza Yusof, Mohd Hafiz Dzarfan Othman, Mukhlis A. Rahman, Ahmad Fauzi Ismail, Roshanida A. Rahman, Watsa Khongnakorn
Summary: Novel free-standing TiO2 hollow nanofibers have been developed to overcome the shortcomings of traditional TiO2 hollow nanofibers, showing better recyclability and excellent performance in degrading BPA, suggesting high potential for application in wastewater treatment.
Article
Engineering, Chemical
Watsa Khongnakorn, Phudis Pattanasattayavong, Kathayut Tanthai, Panitan Jutaporn
Summary: This study investigated the effects of different binders on the performance of ceramic photocatalytic membrane reactors (PMRs) in treating secondary effluent from hospitals. The results showed that the PMRs with TiO2-PEG and TiO2-SLS membranes achieved DOC removal efficiencies of 20.0% and 28.5%, respectively. The EEM characterization revealed the presence of four fractions of organic matter in the system, with preferential removal of protein-like dissolved organic matter by hydroxyl radicals in the reactor.
DESALINATION AND WATER TREATMENT
(2021)
Article
Engineering, Environmental
Weerapong Bootluck, Thawat Chittrakarn, Kuaanan Techato, Watsa Khongnakorn
Summary: The plasma treatment modified the crystal structure, particle size, and optical properties of anatase TiO2, leading to improved photocatalytic activity for H-2 evolution. Surface modification by plasma treatment resulted in the generation of oxygen vacancies and Ti3+ species, contributing to enhanced photocatalytic performance under visible light irradiation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Kanidta Poojamnong, Kitiyot Tungsudjawong, Watsa Khongnakorn, Panitan Jutaporn
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)
Proceedings Paper
Energy & Fuels
Chotinath Vongvichiankul, Jirawan Deebao, Watsa Khongnakorn
2017 INTERNATIONAL CONFERENCE ON ALTERNATIVE ENERGY IN DEVELOPING COUNTRIES AND EMERGING ECONOMIES
(2017)
Article
Engineering, Multidisciplinary
Penporn Sriniworn, Wirote Youravong, Wassa Khongnakorn
JOURNAL OF ENGINEERING SCIENCE AND TECHNOLOGY
(2016)