Article
Biochemistry & Molecular Biology
Xitao Luo, Lingling Sun, Qinghui Shou, Xiangfeng Liang, Huizhou Liu
Summary: Acid saccharification of hemicelluloses is a sustainable approach for diversifying revenue in the lignocellulose biorefinery industry. Electrodialysis has been used to separate inorganic acids from acid hydrolysate, resulting in improved acid recovery and reduced chemical consumption. However, membrane fouling remains a significant issue in the electrodialysis process.
Article
Engineering, Environmental
Shanshan Zhang, Shangqing Chen, Junfeng Wang, Yi Nie, Yahui Li, Suojiang Zhang
Summary: The study investigated the membrane fouling and cleaning strategy in the process of metal ion removal from ionic liquid (IL) aqueous solution using selective electrodialysis (SED) method. Various operating parameters were studied to understand the formation of membrane fouling. Ion exchange capacity (IEC), contact angle, resistance, and XPS were used to reveal the fouling mechanism. The results showed that the physicochemical properties of membranes changed with the formation of fouling, and the [Emim]+ cation formed physical/chemical bonds with the fixed groups in MSCM. EIS demonstrated a change in ion migration path during the formation of [Emim]+, Mg2+, Ca2+ fouling layer. A specific cleaning strategy with the order of H2O, 0.1 M HCl, and 0.1 M NaCl was proposed, resulting in stable separation performance and physicochemical properties of the membranes within 6 cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Byung Min An, Shine Lin Aung, Jihyeok Choi, Hoyoung Cha, Jinsoo Cho, Battuya Byambaa, Kyung Guen Song
Summary: The purpose of this study is to confirm the efficiency of the electrodialysis system in removing nutrient ions from actual wastewater and to investigate the fouling propensity of ion exchange membranes by dissolved organic matter and micropollutants. The results showed that the ED system was particularly effective in removing ammonium, with a removal rate of 92.1%, and phosphate, with a removal rate of 52.4%. It was found that low-molecular-weight organic matter was a major cause of membrane fouling, and acid-base cleaning was effective in removing organic foulants. Additionally, certain micropollutants could be removed by the ED system based on their ionic characteristics, but some were presumed to be adsorbed on the membrane due to their hydrophobicity.
Article
Engineering, Environmental
Xi Wang, Xiaoyu Zhou, Shuang Ma, Zhe Wang, Erqiang Wang, Zengxi Li
Summary: White carbon black (WCB) is an important silica product widely used in industries. However, the production of WCB using the precipitation method generates a large amount of wastewater containing sodium sulfate and silica. This study explores the use of electrodialysis (ED) as a treatment method for WCB wastewater. The results demonstrate that ED is an effective, low energy-cost, and reliable process for treating WCB wastewater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Wanjun Cui, Jizhong Meng, Shun Wang, Zhenhu Hu, Guangli Liu, Xinmin Zhan
Summary: This study investigated the removal of 17 beta-estradiol (E2), a natural estrogen found in manure digestate, during nutrient recovery through electrodialysis technology (ED). The results showed that E2 was primarily removed through membrane adsorption in conventional ED, while anode-ED effectively removed E2 through electrochemical oxidation.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Biochemistry & Molecular Biology
Mahamuda Akter, Jin-Soo Park
Summary: This study investigates the impact of surface roughness and hydrophilicity on membrane fouling using two types of ion exchange membranes. The commercially available membranes have rough and hydrophilic surfaces, while the lab-made membranes have smooth and hydrophobic surfaces. The fouling tests confirm that electrical attraction is the main cause of membrane fouling, with anionic and cationic foulants affecting anion and cation exchange membranes, respectively. The results show that a rough surface has a higher fouling tendency in short-term tests, but the fouling can be easily mitigated due to the hydrophilic surface. Conversely, a smooth surface initially reduces fouling, but leads to irreversible fouling due to the accumulation of foulants on the hydrophobic surface.
Article
Engineering, Chemical
Jizhong Meng, Lin Shi, Shun Wang, Zhenhu Hu, Akihiko Terada, Xinmin Zhan
Summary: Electrodialysis (ED) is a potential technique for nutrient recovery from digestate, but fouling caused by dissolved organic matter (DOM) remains a challenge. This study investigated the effect of molecular size on DOM fouling in ED membranes using an ultrafiltration-ED design. It was found that the fouling of anion-exchange membranes was significantly influenced by molecular size, while the cation-exchange membranes were antifouling. DOM with a molecular size smaller than 10 kDa caused the most significant deterioration of the anion-exchange membrane.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Wenyu Xiang, Minyuan Han, Ting Dong, Jingmei Yao, Le Han
Summary: The study on fouling dynamics of APAM towards AEM during ED reveals that monitoring the variation of the solution and membrane properties can help understand the fouling process. Deposition of APAM gradually hinders current transfer, leading to the formation of a gel layer and blockage of free volume, resulting in increased membrane resistance. Water splitting causes significant pH variation, altering the particle size of APAM and accelerating fouling formation.
Article
Engineering, Chemical
Yongzheng Lin, Tao Yang, Huiqing Lian, Yanxia Zhao, Tao Yan, Xuguang Li, Wen Song, Wei Liu, Liangguo Yan
Summary: This study developed a highly efficient polytitanium sulfate (EPTS) through electrodialysis for membrane fouling control. The EPTS showed strong coagulation capability and achieved high removal efficiency of various pollutants. It also enabled high flux ceramic membrane filtration with no fouling issues, making it a promising approach for water purification.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Review
Food Science & Technology
Subin R. C. K. Rajendran, Beth Mason, Alan A. Doucette
Summary: Membrane-based separation technologies have the potential to reduce production costs and enhance versatile multiproduct processing capabilities, making them valuable for large-scale production of bioactive compounds in the food industry.
FOOD AND BIOPROCESS TECHNOLOGY
(2021)
Article
Engineering, Chemical
Guanyu Ma, Xuesong Xu, Million Tesfai, Yanyan Zhang, Huiyao Wang, Pei Xu
Summary: The use of PEI-TiO2 and PEI-GO nanocomposites for modifying membranes resulted in enhanced antifouling properties and improved desalination efficiency during electrodialysis. The modified membranes demonstrated better resistance to organic fouling and increased salt removal in treating synthetic water containing HA and BSA compared to unmodified membranes. Additionally, long-term fouling experiments with wastewater effluent showed superior antifouling capacity of nanocomposite membranes, especially the PEI-GO membrane.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Ivan Merino-Garcia, Svetlozar Velizarov
Summary: Ion exchange membranes play a crucial role in various separation processes, but their performance is significantly limited by fouling issues caused by the heterogeneous and multivalent ionic composition of natural feedwaters. Efficient membrane cleaning strategies are essential to control and mitigate the impacts of fouling phenomena, with a focus on membrane type, characterization, and target application. Promising membrane cleaning approaches, including physical, chemical, and mechanical methods, are summarized and discussed in this review.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Zhen Zhou, Maonan Zhang, Qing Xia, Xiaodan Zhao, Qiang Ming, Li Zeng
Summary: This study compares the treatment effect and fouling property of the NF-ED hybrid system and single ED system for flue gas desulfurization wastewater treatment. The optimal operation conditions of the ED and NF process are determined, and the fouling properties of NF membranes and IEMs are explored. The economic impact of membrane fouling is calculated in detail, and the total operating cost for the NF-ED system is found to be 35.9% more expensive than the single ED system.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Xinbo Zhang, Haojie Huang, Qing Du, Fu Gao, Zhiwen Wang, Guangxue Wu, Wenshan Guo, Huu Hao Ngo
Summary: This study investigated the effects of sulfadiazine (SDZ) on the performance of an anaerobic membrane bioreactor system for treating swine wastewater. It was found that higher concentrations of SDZ significantly suppressed the system's performance, but lower concentrations still achieved high COD removal and biogas production. The presence of SDZ increased the levels of soluble microbial product and extracellular polymeric substances, leading to a shorter membrane fouling cycle and changes in microbial community.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Diego Pintossi, Michel Saakes, Zandrie Borneman, Kitty Nijmeijer
Summary: Fouling is a major concern in harvesting salinity gradient energy using reverse electrodialysis (RED). This study focused on developing antifouling membranes by surface modification of a commercial anion exchange membrane with zwitterionic layers. While zwitterionic monomers effectively delayed fouling onset, zwitterionic brushes not only delayed the onset but also slowed down the growth of the fouling layer, leading to higher power density outputs in RED applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)