Article
Nanoscience & Nanotechnology
Zhihua Deng, Qiuhan Zhang, Qing Deng, Zhanhu Guo, Ilwoo Seok
Summary: In this study, the impregnation method was used to modify coconut shell activated carbon for purifying acetone exhaust gas. The results showed that 1% KOH modified activated carbon exhibited the highest adsorption performance, with the Langmuir adsorption isotherm model and Bangham kinetic model fitting the adsorption process well.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Engineering, Environmental
Changkai Zhou, Ke Zhou, Huan Li, Xiang Xu, Baogen Liu, Hailong Li, Zheng Zeng, Weiwu Ma, Liqing Li
Summary: The study explores the application of pressure swing adsorption (PSA) for removing and recycling VOCs, with a focus on nonequilibrium time, effective length, and enrichment ratio. Various experiments were conducted to investigate the mechanism and industrial parameters of PSA, revealing that factors such as kinetic diameter, polarity, pore size, and boiling point influence the efficiency of VOCs removal. Methanol and acetone showed shorter effective lengths for complete removal compared to toluene, and the desorption performance was found to be related to desorption activation energy and the boiling point of the adsorbate. Ultimately, the study found that acetone had the highest recovery ratio among the three VOCs studied, presenting new opportunities for VOCs removal and recovery.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Forouzan Vakili, Alimorad Rashidi, Lobat Taghavi, Nabiollah Mansouri
Summary: The study presents the synthesis of a nitrogen and sulfur dual-doped waste-derived graphene-like nanoporous carbon and investigates its capability in removing mercury vapor from gas streams. The doped graphene-like carbon nanosheets showed enhanced activity towards mercury vapor adsorption compared to pristine graphene-like carbon. The best performing sample achieved 94.5% mercury removal, outperforming sulfur-impregnated commercial activated carbon.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Chemical
Wenhao Li, Wenlong Tu, Jie Cheng, Fu Yang, Xuyu Wang, Lulu Li, Danhong Shang, Xinwei Zhou, Chao Yu, Aihua Yuan, Jianming Pan
Summary: Gas adsorption sieving for CO2/CH4/N-2 is explored using two types of N-doping biomass activated carbon derived from banana peel and grapefruit peel. The N-doped ACs show higher CO2 adsorption capacity and improved selectivity for CO2/N-2, CO2/CH4, and CH4/N-2 binary mixtures compared to traditional adsorbents. The optimal adsorbents demonstrate good reversibility and reusability for CO2 adsorption at room temperature.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Bi Lepohi Guy Laurent Zanli, Wei Tang, Jiawei Chen
Summary: This study synthesized nitrogen-doped biochar (N-A) from cocoa shell wastes and investigated its adsorption capacity for norfloxacin. The results showed that nitrogen doping greatly improved the performance of biochar in norfloxacin adsorption. The N-A-CSB700 exhibited the highest adsorption capacity and was less affected by environmental factors. This environmentally sustainable alternative has a high potential for future practical applications.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Xiao-Su Lu, Yin-Xian Peng, Hao Chen, Jian Dai, Ni Bai, Jing Wang
Summary: In this study, N-doped mesoporous molecular sieve adsorbents were prepared by using templates of cetyltrimethylammonium bromide, urea, and melamine. The addition of urea and melamine improved the periodicity of the mesoporous structure and increased the specific surface area, pore size, and pore volume. The adsorption capacity of the N-doped adsorbent for acetone was significantly higher than that of pristine mesoporous silica, and it maintained a high adsorption capacity after multiple cycles. This N-doped mesoporous molecular sieve shows promise as an ideal adsorbent for reducing VOCs emissions and protecting the environment.
Article
Chemistry, Applied
Song He, Qilin Chen, Guanyu Chen, Guibin Shi, Chichi Ruan, Mengmeng Feng, Yuansheng Ma, Xin Jin, Xinyu Liu, Chunhua Du, Chunxiang He, Huaming Dai, Chengyang Cao
Summary: This study prepared high specific surface area activated carbon from rice husk for the removal of ofloxacin from medical wastewater. The activated carbon exhibited a large surface area, pore volume, and good thermal stability. Batch experiments revealed the influence of pH, initial concentration, temperature, and coexisting ions on the ofloxacin adsorption. Langmuir and general-order kinetic models were used to describe the adsorption equilibrium data and process, respectively. Thermodynamic studies indicated that the adsorption process was autogenous and endothermic. Treatment of synthetic medical wastewater with activated carbon achieved a high removal rate. The material's superior adsorption properties, ease of preparation and regeneration, make it potentially effective for the removal of ofloxacin from real medical wastewater.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xiaomi Meng, Lin Yang, Wenju Jiang, Lu Yao
Summary: In this study, a N-functionalized porous carbon derived from ZIF-8 (NFPC) was prepared and used for the adsorption removal of gaseous acetone and toluene. NFPC showed good adsorption performance and was found to be more favorable for aromatic compounds adsorption.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Engineering, Chemical
Jinsong Shi, Hongmin Cui, Jianguo Xu, Nanfu Yan
Summary: In this study, N-doped monodisperse carbon nanospheres with high surface area were synthesized using KHCO3 activation. These carbon nanospheres showed high CO2 adsorption performance, surpassing many previous reported results, and they also had high nitrogen content.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Energy & Fuels
Mohamed A. El-Nemr, Mohamed A. Hassaan, Ibrahim Ashour
Summary: Nitrogen-doped activated carbon (NDAC) was prepared from saw dust/zinc chloride mixture and tested for its adsorption capacity of Acid Brown 14 (AB14) dye. The NDAC synthesized at 600 degrees C showed the best adsorption performance for removing AB14 dye from water.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Environmental Sciences
Xinyu Li, Yanling Yang, Xing Li, Nan Wang, Tingting Zhang, Siyang Ji, Zhiwei Zhou
Summary: Wooden PAC showed the best adsorption capacities among the three types compared in this study. Modification with formic acid significantly improved the adsorption efficiency, while NaOH modification decreased the adsorption capacity.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ghazanfar Nazir, Adeela Rehman, Soo-Jin Park
Summary: This study presents a single-step synthesis method for the preparation of self-activated heteroatom-doped carbon cryogels. The N-doped cryogels exhibit a highly porous structure, abundant narrow micropores, and high CO2 adsorption performance.
Article
Chemistry, Physical
Kexin Wei, Tao Lv, Ting Wang, Haitao Zhou, Yiting Jiang, Xueren Qin, Zuguang Liu
Summary: Nitrogen-doped activated carbons are gaining increasing interest in environmental protection, pharmaceutical, and food industries due to their tunable pore structures, surface functional groups, and variable charges. This study produced a low-cost nitrogen-doped activated carbon derived from kraft lignin in black liquor using a self-activation method and demonstrated its efficacy as an adsorbent for anionic methyl orange. The activated carbon exhibited a rich pore structure, with a specific surface area of 1124.78 m2 g-1 and a total pore volume of 0.60 cm3 g-1. Under optimized conditions, it showed a maximum adsorption capacity of 373.95 mg g-1 for methyl orange in simulated wastewater. The adsorption process followed the Pseudo-second-order kinetic model and the Langmuir model. This research provides a novel strategy for producing low-cost lignin-derived activated carbon from dried black liquor through self-activation.
SURFACES AND INTERFACES
(2023)
Article
Green & Sustainable Science & Technology
Lidia Dominguez-Ramos, Ainoha Prieto-Estalrich, Giulio Malucelli, Diego Gomez-Diaz, Maria Sonia Freire, Massimo Lazzari, Julia Gonzalez-Alvarez
Summary: This study analyzes the effect of doping agents in carbon materials on the adsorption and separation of carbon dioxide. The results show that non-activated carbons doped with sulfur exhibit high selectivity and adsorption heat values, making them suitable for carbon dioxide separation from nitrogen mixtures.
Article
Chemistry, Physical
Yong Li, Hong Zhao, Siyuan Chen, Shuhao Bao, Feifei Xing, Biao Jiang
Summary: Phosphorus-doped activated carbon (P@AC) can serve as an efficient metal-free catalyst for the dehydroaromatization of n-hexane to benzene under mild conditions. The active sites for dehydroaromatization catalysis are believed to be functional groups containing -P(O)(OH) on the carbon surface, as indicated by characterization analysis.
CATALYSIS COMMUNICATIONS
(2021)
Article
Chemistry, Applied
QingSheng Zhang, SiJia Chen, Lin Zhang, Qun Cui, ZongJian Liu, HaiYan Wang
JOURNAL OF POROUS MATERIALS
(2016)
Article
Engineering, Chemical
Lin Zhang, Gang Qian, Zongjian Liu, Qun Cui, Haiyan Wang, Huqing Yao
SEPARATION AND PURIFICATION TECHNOLOGY
(2015)
Article
Nanoscience & Nanotechnology
Sijia Chen, Lin Zhang, Zhao Zhang, Gang Qian, Zongjian Liu, Qun Cui, Haiyan Wang
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Chemistry, Physical
Jian Liu, Zhanyong Li, Xuan Zhang, Ken-ichi Otake, Lin Zhang, Aaron W. Peters, Matthias J. Young, Nicholas M. Bedford, Steven P. Letourneau, David J. Mandia, Jeffrey W. Elam, Omar K. Farha, Joseph T. Hupp
Article
Chemistry, Physical
Haoyuan Chen, Zhijie Chen, Lin Zhang, Peng Li, Jian Liu, Louis R. Redfern, Shinya Moribe, Qun Cui, Randall Q. Snurr, Omar K. Farha
CHEMISTRY OF MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Qing-Hui Guo, Zhichang Liu, Peng Li, Dengke Shen, Yaobin Xu, Matthew R. Ryder, Haoyuan Chen, Charlotte L. Stern, Christos D. Malliakas, Xuan Zhang, Lin Zhang, Yunyan Qiu, Yi Shi, Randall Q. Snurr, Douglas Philp, Omar K. Farha, J. Fraser Stoddart
Article
Thermodynamics
Zhou Xu, Yu Yin, Junpeng Shao, Yerong Liu, Lin Zhang, Qun Cui, Haiyan Wang
Article
Engineering, Environmental
Peipei Fan, Lin Zhang, Zongjian Liu, Weidong Zhang, Qun Cui, Haiyan Wang
WATER SCIENCE AND TECHNOLOGY
(2020)
Article
Chemistry, Applied
Zongjian Liu, Zhicong Sun, Zhao Zhang, Lifei Xu, Lin Zhang, Qun Cui, Haiyan Wang
Summary: In this paper, UiO-66-Z with uniform mesopores was synthesized using a hydrothermal method, showing better adsorption performance compared to UiO-66, especially in terms of the adsorption rate of MCH.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jiaxu Liu, Shenjie Zhu, Lin Zhang, Zongjian Liu, Qun Cui, Haiyan Wang
Article
Nanoscience & Nanotechnology
Lee Robison, Lin Zhang, Riki J. Drout, Peng Li, Chad R. Haney, Anlil Brikha, Hyunho Noh, B. Layla Mehdi, Nigel D. Browning, Vinayak P. Dravid, Qun Cui, Timur Islamoglu, Omar K. Farha
ACS APPLIED BIO MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Yijun Liao, Lin Zhang, Mitchell H. Weston, William Morris, Joseph T. Hupp, Omar K. Farha
CHEMICAL COMMUNICATIONS
(2017)
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)