Article
Nanoscience & Nanotechnology
Jinsong Xia, Harshit Mahandra, Ahmad Ghahreman
Summary: The magnetic activated carbon with good magnetism and specific surface area can efficiently recover gold from cyanide solution, showing faster adsorption rate compared to commercial activated carbon. The magnetic activated carbon is easily separated from the solution with an external magnet and has good reusability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Paper & Wood
Qi Zhang, Yangyang Luo, Dengke Wang, Zheming Yang, Jinxia Zheng, Mali Xie, Linjun Shao, Yijun Du, Chenze Qi
Summary: In this study, chitosan composite nanofibers were prepared by electrospinning and annealing process to improve their solvent resistance. The results showed that these composite nanofibers had better adsorption performance, especially for Pd2+ cations. The study also found that these composite nanofibers exhibited good adsorption selectivity and reusability.
Article
Environmental Sciences
Ke Wang, Xingzhen Qin, Kungang Chai, Zongwu Wei, Fan Deng, Bingyu Liao, Jinyu Wu, Fang Shen, Zhi Zhang
Summary: A cross-linking strategy combined with chemical activation was used to synthesize starch polyurethane-activated carbon (STPU-AC) for the removal of endocrine-disrupting compounds (EDCs) from water. STPU-AC exhibited a large surface area and abundant functional groups, resulting in high adsorption capacity for bisphenol-A (BPA). The adsorption of BPA by STPU-AC followed a pseudo-second-order kinetic model and a Freundlich isotherm model. Solution chemistry and the presence of other contaminants also affected BPA adsorption. The primary adsorption sites were found to be hydroxyl oxygen and pyrrole nitrogen.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Zhuo Wang, Su Bin Kang, Sung Wook Won
Summary: PEI-crosslinked chitin biosorbent showed efficient adsorption performance for recovering Pd(II) from acid solution, achieving adsorption equilibrium within 30 minutes for Pd(II) concentrations of 50-200 mg/L. The biosorbent demonstrated good reusability after up to three adsorption-desorption cycles.
Article
Environmental Sciences
Yuwei Song, Yuanyuan Wang, Runping Han
Summary: In this study, a novel adsorbent PSAC developed from pine sawdust's pyrolytic carbon was successfully used to adsorb 2,4-DCP and 4-CP. The adsorption capacity of PSAC was significantly enhanced compared to PSPC. The adsorbents were characterized and the key factors influencing the adsorption process were investigated. PSAC exhibited strong adsorption capacities for 2,4-DCP and 4-CP and could be regenerated for reuse.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Chang Liu, Bingqiao Yang, Feifei Jia, Shaoxian Song
Summary: In this study, a MoS2@activated alumina bead composite was used as a catalyst to recover gold from thiosulfate leaching solution. The recovery efficiency reached 98%, much higher than traditional methods, and the reduced gold could be desorbed from the composite using a supersonic method, achieving one-step gold recovery.
Article
Engineering, Chemical
Yan Zhang, Bin Xu, Yunquan Zheng, Qian Li, Yongbin Yang, Xiaoliang Liu, Tao Jiang, Xianjun Lyu
Summary: Hexaamminecobalt(III) is an efficient catalyst for gold thiosulfate leaching, surpassing Co(II) and Cu(II), enabling more efficient gold recovery through resin adsorption. This catalyst shows promise in replacing Cu(II) for gold extraction and recovery from ores.
MINERALS ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Diana Daminescu, Narcis Duteanu, Mihaela Ciopec, Adina Negrea, Petru Negrea, Nicoleta Sorina Nemes, Adina Berbecea, Gheorghe Dobra, Sorin Iliev, Lucian Cotet, Alina Boiangiu, Laurentiu Filipescu
Summary: In this paper, the adsorption of scandium from aqueous solutions on the surface of low-temperature-activated alumina products (GDAH) was studied. The thermodynamic and kinetic studies related to the adsorption process were also conducted.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Szu-Han Wang, Feng-Cheng Chang
Summary: This study aimed to develop lignosulfonate activated carbon fibers (LACFs) and investigate the metal recovery mechanisms. The LACFs were prepared through electrospinning and CO2-based physical activation. The activated LACF exhibited a larger specific surface area, total pore volume, and micropore ratio, as well as more acidic and sulfur functional groups. The adsorption behaviors of Cu(II) and Au(III) on LACF could be described using the Freundlich and Langmuir model, respectively. Both systems involved physisorption and chemisorption, with mechanisms including electrostatic forces, Van der Walls forces, cation exchange, and surface complexation. Overall, this study provides a foundation for developing physically activated lignosulfonate carbon for metal ion recovery.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Multidisciplinary
Davoud Balarak, Amir Hossein Mahvi, Saeideh Shahbaksh, Md A. Wahab, Ahmed Abdala
Summary: This study investigated the adsorptive removal of azithromycin from reclaimed water using activated porous carbon prepared from Azolla filiculoides. The AFAC showed high efficiency in removing azithromycin, indicating its potential as a low-cost adsorbent for AZM in aqueous solutions.
Article
Engineering, Environmental
Ratthakarn Jumroonrat, Thaksina Poyai, Seoktae Kang, Hyojeon Kim, Pharkphum Rakruam, Nattawin Chawaloesphonsiya, Pisut Painmanakul
Summary: This study investigates the recycling of ethyl lactate (EL) contaminated with oil by adsorption using granular activated carbon (GAC). Batch experiments show that oil in EL can be favorably and endothermically adsorbed by GAC, with a maximum adsorptive capacity of 1053 mg g-1 at 35 degrees C. The adsorption process follows the Freundlich isotherm and pseudo-first order kinetic models, and is mainly controlled by film diffusion, hydrophobic interaction, and coalescence. Column adsorption experiments demonstrate that GAC can achieve a maximum breakthrough removal efficiency of 99.3% under specific conditions. The spent GAC can be regenerated with a efficiency of 95% after five adsorption-desorption cycles. The estimated payback period for using EL extraction and recovery is 1.8 years. These findings highlight the industrial applicability of GAC adsorption for solvent recovery and promote EL as a more economically feasible solvent for greener management of oil-contaminated drill cuttings.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Yi Fang, Ke Yang, Yipeng Zhang, Changsheng Peng, Aurora Robledo-Cabrera, Alejandro Lopez-Valdivieso
Summary: The efficiency of Cr(VI) removal by ballmilled highly activated carbon (HAC) under neutral conditions was significantly improved due to the increased content of surface acid functional groups. Two mechanisms for Cr(VI) removal were proposed, involving reduction of Cr(VI) to Cr(III) and formation of chromium hydroxides on the surface of HAC, as well as bonding of CrO42- on the surface COOH groups.
ENVIRONMENTAL RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Jinlong Fan, Li Duan, Xiangbo Zhang, Zhiming Li, Pengju Qiu, Yajiao He, Pei Shang
Summary: The synthesis of S-doped porous carbons derived from passionfruit shells was investigated for the effective recovery of silver from waste sources. The introduction of sulfur elements through ammonium sulfate activation not only increased the proportion of mesopores but also improved the adsorption capacity for silver ions. The study provides new insights into designing environmentally friendly and efficient adsorbents for the selective recovery of silver from acidic aqueous media.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biotechnology & Applied Microbiology
A. Wang, C. Liu, X. Ge, W. Meng, Y. Pi, C. Liu
Summary: The study evaluated the adsorption behavior and mechanisms of surface modified activated carbon with bacteria. Results showed that modified activated carbon had high adsorption efficiency under weakly acidic pH, with adsorption capacity increasing with temperature. The adsorption of Congo red by bacteria surface modified activated carbon fitted well with the Langmuir's model, and the process was endothermic with physical adsorption as the main driving force.
JOURNAL OF APPLIED MICROBIOLOGY
(2021)
Article
Chemistry, Physical
Wei Hu, Yaolan Niu, Kun Dong, Dunqiu Wang
Summary: This study developed a highly efficient and low-cost activated carbon (BAC-600) derived from bagasse, which was used for the removal of sulfamethoxazole (SMZ) from water. The adsorption conditions were optimized using response surface methodology (RSM) with a Box-Behnken design (BBD). BAC-600 exhibited excellent adsorption performance, fitting well with the pseudo-second-order model. The adsorption mechanism of SMZ on BAC-600 involved hydrogen bonding, electrostatic interaction, and p-p interaction. This research provides a potential solution for eliminating environmental pollution caused by antibiotics in water.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Review
Chemistry, Physical
Oualid Alioui, Michael Badawi, Alessandro Erto, Mohammed A. Amin, Vineet Tirth, Byong-Hun Jeon, Saiful Islam, Marco Balsamo, Mirella Virginie, Barbara Ernst, Yacine Benguerba
Summary: Density Functional Theory (DFT) simulations play a significant role in gaining insights into the Dry Reforming of Methane (DRM) process and designing appropriate catalytic systems.
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Environmental
Lotfi Sellaoui, Mohamed Bouzidi, Dison S. P. Franco, Abdullah S. Alshammari, Mohamed Gandouzi, Jordana Georgin, Naim Bel Haj Mohamed, Alessandro Erto, Michael Badawi
Summary: This paper examines the adsorption of methylene blue (MB) and crystal violet (CV) dyes onto Bauhinia forficata residual fruit powder (BFRFP) as a potential adsorbent. The results show that BFRFP has a higher affinity for CV dye, and it can be a competitive material for removing MB and CV dyes from polluted water. A physical model is used to interpret the adsorption mechanisms, indicating the presence of physical interactions during the adsorption process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Yanan Chen, Jawad Ali, Lotfi Sellaoui, Fatma Dhaouadi, Muhammad Naeem, Dison S. P. Franco, Jordana Georgin, Alessandro Erto, Michael Badawi
Summary: This paper experimentally and analytically analyzes the adsorption of the herbicide 2,4-D and the drug ketoprofen on wheat husks treated with H2SO4. The adsorbent is fully characterized using techniques such as FT-IR, SEM, and XRD. The study investigates the optimum conditions for adsorption, the impact of temperature, and the adsorption mechanism of the compounds. The results indicate that physical interactions play a significant role in the adsorption process on the tested adsorbent.
Article
Engineering, Chemical
D. Flagiello, D. Tammaro, A. Erto, P. L. Maffettone, A. Lancia, F. Di Natale
Summary: In this study, pilot-scale tests were conducted on a new design of Y-type corrugated polylactic acid (PLA) packing produced by a one-step 3D foam-printing process. Experimental tests showed that the FT.Y packing exhibited comparable or superior performance to the benchmark commercial Mellapak 250Y packing in terms of pressure drops and mass transfer coefficients. The FT.Y packing also demonstrated higher desulfurization efficiencies in wet Flue Gas Desulfurization than the benchmark packing. Overall, the 3D foam-printed FT.Y packing shows great potential in process intensification for absorption and distillation processes.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Engineering, Chemical
D. Flagiello, A. Erto, A. Lancia, Di Natale
Summary: Wet Oxidative Scrubbing (WOS) is a process that can simultaneously remove SO2, NOx, and other pollutants from exhaust gases. It is gaining attention for its high efficiency, compactness, and reduced chemical usage. However, the application of WOS requires proper treatment of washwater, which has been investigated in this work using a washwater treatment process called R-PCF. The experiments show that R-PCF is effective in reducing the concentration of chlorine species, making it a valuable technique for washwater cleaning in WOS processes.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Engineering, Chemical
Luigi Piero Di Bonito, Lelio Campanile, Erasmo Napolitano, Mauro Iacono, Alberto Portolano, Francesco Di Natale
Summary: This paper presents the performances of a marine SO2 absorption scrubber on a large Ro-Ro cargo ship. The study reconstructs a one-year continuous monitoring dataset to interpret and predict the scrubber's performances using analytical and artificial intelligence models. The results show that combined analytical/AI models can significantly improve the design and control of marine scrubbers and other chemical equipment.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Chemistry, Physical
Mohamed Bouzidi, Lotfi Sellaoui, Mansour Mohamed, Dison S. P. Franco, Alessandro Erto, Michael Badawi
Summary: The paper presents experimental and theoretical research on the adsorption of paracetamol (PCM) and ibuprofen (IBP) on a new activated carbon derived from Erythrina speciosa tree pods. The adsorbent exhibits excellent porous properties with a BET surface area of 795.1 m2/g and an average pore volume of 0.422 cm3 g-1. The adsorption tests show that the maximum adsorption capacity of both IBP and PCM is achieved at pH = 3, where the adsorbate molecules are in their neutral form. The theoretical analysis suggests that both IBP and PCM are adsorbed through a multi-molecular mechanism on the surface of the adsorbent.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Ouahiba Moumeni, Mouna Mehri, Rachida Kerkour, Abir Boublia, Fouad Mihoub, Khallil Rebai, Azmat Ali Khan, Alessandro Erto, Ahmad S. Darwish, Tarek Lemaoui, Nadjib Chafai, Yacine Benguerba
Summary: This study evaluated the potential of two specific alpha-aminophosphonate molecules as anticorrosion agents for XC48 carbon steel under acidic conditions. The results showed high inhibition efficiency for both molecules, with AMP1 and AMP2 having inhibition efficiencies of 83.34% and 63.82% for EIS and 82.70% and 74.57% for PDP, respectively. The study also demonstrated the influence of temperature on inhibition efficiency and revealed the formation of chemisorption coating inhibiting acid attack.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Environmental Sciences
Maroua Nessaibia, Houria Ghodbane, Hana Ferkous, Slimane Merouani, Manawwer Alam, Marco Balsamo, Yacine Benguerba, Alessandro Erto
Summary: The photoactivated periodate (UV/IO4-) process was used to degrade acid orange 10 (AO10) dye. Periodate ions produce reactive radicals that accelerate the degradation. Increasing initial periodate concentration enhances dye removal rate, but concentrations over 3 mM slow down the degradation. On the other hand, increasing initial dye concentrations reduces the degradation performance. pH is critical for AO10 breakdown. Salts slow down dye degradation, while UV/IO4- is more efficient in distilled water. Surfactants and sucrose affect the dye's decomposition rate. Tertbutanol does not affect dye breakdown, indicating a non-(OH)-O-center dot pathway. The UV/IO4- system eliminates 56.5% and 60.5% of initial COD after 60 and 120 min, suggesting its effectiveness for treating effluents with textile dyes.
Article
Green & Sustainable Science & Technology
Paolo Trucillo, Alessandro Erto
Summary: The concept of sustainability is used to compare manufacturing processes or material selection. Sustainability is defined as maximizing an objective function related to economic, environmental, and social impacts. Sustainability indicators are calculated and represented using radar diagrams to identify weaknesses and propose optimization methods.
Article
Engineering, Chemical
Maroua Nessaibia, Houria Ghodbane, Ilhem Djaghout, Abdelhalim Fetimi, Slimane Merouani, Manawwer Alam, Marco Balsamo, Alessandro Erto, Yacine Benguerba
Summary: This study investigates the decomposition of Acid Orange 10 dye using the H2O2/IO4- reactive system and evaluates the impact of various factors on the process efficiency. It found that the concentrations of H2O2 and IO4- exert a nonmonotonic effect on the removal of AO10, and acidic conditions significantly promote the degradation efficiency. Moreover, an increase in salinity decreases the effectiveness of AO10 removal.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Ali Zerriouh, Amani Deghiche, Walid Bououden, Dario Cavallo, Fabrizio Rainone, Alessandro Erto, Nacerddine Haddaoui
Summary: This research explores the effect of tetraethyl orthosilicate (TEOS) on the interaction mechanism in the hybrid polyvinyl alcohol (PVA)/graphene oxide (GO) material. The addition of TEOS significantly reduces the crystallinity of PVA and improves the thermal stability of PVA/GO. Theoretical simulations suggest that the bonding interaction energies are enhanced by the addition of SiO2, and the compatibility between PVA and GO is increased with the presence of SiO2.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Biochemistry & Molecular Biology
Soumeya Khaled-Khodja, Hassen Cheraitia, Karima Rouibah, Hana Ferkous, Gael Durand, Semia Cherif, Gamal A. El-Hiti, Krishna Kumar Yadav, Alessandro Erto, Yacine Benguerba
Summary: In this study, the contamination of persistent organic pollutants (POPs) in Annaba Bay, Algeria, was investigated using multivariate analysis. The results showed that the main sources of PCB emissions in the bay are urban/domestic and agricultural/industrial. This research provides a potential procedure and methodological analysis for future case studies.
Article
Engineering, Environmental
Yanan Chen, Jawad Ali, Lotfi Sellaoui, Fatma Dhaoudi, Dison S. P. Franco, Jordana Georgin, Alessandro Erto, Julien Vieillard, Michael Badawi
Summary: The activated carbons derived from Calophyllum inophyllum and Manihot esculenta were used for the removal of Diuron herbicide and exhibited different performances. The adsorbent from Manihot esculenta showed better results with a maximum adsorption capacity of 220 mg/g. The analysis of the adsorption mechanism using a physical model revealed that an endothermic aggregation process occurs, and the adsorption is based on physical forces.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Fatma Dhaouadi, Fatma Aouaini, Laila A. A. Al-Essa, Noura Khemiri, Alessandro Erto, Abdelmottaleb Ben Lamine
Summary: The research investigates the adsorption of aspirin and paracetamol using N-CNT/beta-CD and Fe/N-CNT/beta-CD nanocomposite polymers. A multilayer model is used to explain the molecular scale adsorption isotherms and overcome limitations of classical models. Results show that adsorption occurs through 3 to 5 adsorbate layers, and multiple molecules can be captured by each site. The presence of Fe enhances the removal of pharmaceutical molecules, and the adsorption involves weak physical interactions.
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)