Article
Environmental Sciences
Saiou Fu, Junzhen Di, Xuying Guo, Yanrong Dong, Sihang Bao, Hanzhe Li
Summary: In this study, lignite-loaded nano-FeS was prepared and its potential for treating acid Cr(VI)-containing wastewater was explored. The results showed that nFeS@Lignite had a high adsorption capacity for Cr(VI) and the adsorption process followed a pseudo-second-order model and Langmuir isotherm model. Coexisting anions inhibited the removal of Cr(VI), with higher ionic strength resulting in stronger inhibition.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Zecong Ding, Guangzhao Sun, Fenglian Fu, Chujia Ye
Summary: This study investigated the phase transformation of Cr(VI)-adsorbed ferrihydrite at different pH in the presence of aqueous Mn(II), as well as the fate of Mn(II) and Cr(VI) in the transformation process of ferrihydrite. The results showed that the presence of Cr(VI) and Mn(II) had an impact on the transformation and stability of ferrihydrite.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2022)
Review
Environmental Sciences
Nazeer Abdul Azeez, Swati Sucharita Dash, Sathyanarayana Naidu Gummadi, Vijaykumar Sudarshana Deepa
Summary: This article discusses the pollution of the environment with toxic heavy metals due to industrialization and modern agricultural practices, with a focus on hexavalent chromium. Various methods, including nano and bioremediation, have been employed to reduce heavy metal concentrations, improving efficiency and lowering costs.
Article
Chemistry, Inorganic & Nuclear
Hossein Ashrafi, Fatemeh Rahnama, Morteza Akhond, Ghodratollah Absalan
Summary: Nanocubic MoS2-FeS2, as a photocatalyst, exhibits high efficiency in adsorption and degradation of methylene blue and reduction of Cr(VI) through hole-mediated photodegradation process.
INORGANIC CHEMISTRY
(2022)
Article
Environmental Sciences
Na Chen, Shiyu Cao, Lin Zhang, Xing Peng, Xiaobing Wang, Zhihui Ai, Lizhi Zhang
Summary: This study compared the Cr(VI) removal processes of hydrochar and pyrochar in dark and under simulated sunlight, revealing that hydrochar showed higher Cr(VI) reduction percentage through direct surface electron reduction and indirect solution O-2(-) reduction pathways compared to pyrochar. The different Cr(VI) reduction pathways were attributed to the structural dependent Cr(VI) adsorption models of hydrochar and pyrochar, suggesting an efficient Cr(VI) removal strategy with sunlight and hydrochar.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Xiaofeng Jiang, Wenjun Long, Liangqiong Peng, Teng Xu, Faming He, Yuling Tang, Wenhua Zhang
Summary: The rapid immobilization of Cr(VI) from aqueous solution was achieved by reducing it to Cr(III) using tannic acid, followed by pH-triggered precipitation of organo-Cr(III) complexes formed in the redox reaction. This eco-friendly and cost-effective method utilizes natural polyphenols derived from plants.
Article
Chemistry, Inorganic & Nuclear
Bo Zhang, Jun Li, Ying-Shuo Wang, Hui-Meng Zhao, Jia-Hui Yu, Meng-Zhen Liu
Summary: This study demonstrates that Cu2I2-bipy is a suitable material for photocatalytic reduction of highly toxic Cr(VI), with advantages such as low cost, easy preparation, good stability, and appropriate band gap. Further experiments show that Cu2I2-bipy is highly efficient for Cr(VI) reduction with rapid kinetics, high conversion rate, and excellent cycling stability, which may be attributed to the separation of valence bands and conduction bands in the material.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Wei Ma, Jian Gao, Zhen Chen, Jinglu Hu, Gang Xin, Yuzhen Pan, Zhe Zhang, Dazhi Tan
Summary: This study proposed a novel method to detoxify and recover chromium effectively from highly toxic wastewater by electroreducing Cr(VI) to Cr(III) with SiC doped carbon electrode. The modified electrode showed enhanced redox ability and increased pseudo-capacitance, resulting in a higher reduction efficiency of Cr(VI). Hydrothermal precipitation process also obtained high purity hydroxyl chromium from the acid conditions. The combined method demonstrates certain industrial application potential for detoxification and recovery of Cr(VI) wastewater.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Biochemistry & Molecular Biology
Peiyuan Xiao, Junqing Xu, Hongliang Shi, Fengyang Du, Huanzheng Du, Guangming Li
Summary: A chitosan-based magnetic porous microsphere (PPy@PMCS) was proposed for simultaneous Cr(VI) reduction and Cr(III) sequestration in a wide pH range. The abundant interaction sites of PPy@PMCS allowed for effective Cr(VI) adsorption and immediate reduction to less toxic Cr(III). The resulting Cr(III) was in-situ sequestrated by the complexation of chitosan matrix. PPy@PMCS exhibited superior adsorption capacity, even at near neutral pH, and could be easily separated and regenerated under an external magnetic field.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Environmental
Xin Nie, Guiying Li, Yun Wang, Yingmei Luo, Lei Song, Shuguang Yang, Quan Wan
Summary: Pyrite nanomaterials are effective in remediation of Cr(VI) contaminated wastewater, with hexapod-like pyrite nanosheet clusters showing higher removal efficiency than microspherulites. The enhanced removal rate of Cr(VI) is attributed to the increased dissolution of Fe(II) and S(-II) into the suspension. Additionally, the stability and longevity of hexapod-like pyrite nanosheet clusters make them promising for remediation of Cr(VI) contaminated environments.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Shuya Liu, Jincan Han, Daoqing Ma, Hangxi Liu, Ming Fang, Xiaoli Tan
Summary: In this work, MXene@MIL-53-NH2 nanocomposite with superior performance in removing Cr(VI) was fabricated. The hybrid material exhibited high binding affinity and enhanced adsorption capacity for Cr(VI). It also facilitated the reduction of Cr(VI) to Cr(III). The nanocomposite showed excellent adsorption kinetics and thermodynamics, and demonstrated resistance to ionic interference and recyclability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Aiqun Kong, Yawei Sun, Mao Peng, Hongzhi Gu, Yan Fu, Jinli Zhang, Wei Li
Summary: Amino-functionalized MXenes have strong adsorption and reduction abilities for Cr(VI) ions in aqueous solution. The synergy between amino groups and Ti3C2Tx nanosheets enhances the binding energy of MXene toward Cr(VI) and improves selectivity and reusability for Cr(VI) removal.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Engineering, Environmental
Yang Wang, Jiachunxiu Zhang, Wenyi Wang, Tianshu Wu, Yingxue Sun, Haiming Wu, Da Chen, Hai Liu
Summary: Fabricating polyaniline nanorod forests-modified carbon fiber felt has been shown to enhance the reduction of Cr(VI) and improve detoxification efficiency. The optimized CFF-PANI cathode with a larger BET and electrochemical surface area exhibited higher Cr(VI) removal and lower specific energy consumption compared to the CFF cathode. Additionally, operating the FES system at 0.8 V resulted in the lowest specific energy consumption and maintained high energy efficiency for Cr(VI) reduction.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Yushan Ni, Jie Zhang, Dongjiang You
Summary: In this study, a composite electrode material of homemade paulownia biochar and MoS2 was developed for the efficient and selective removal of Cr(vi) from wastewater. The material exhibited excellent adsorption capacity and could achieve electrode regeneration. The results showed that the material had both electrosorption and reduction effects, effectively reducing the toxicity of Cr(vi) to Cr(iii).
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Environmental Sciences
Chun Yang, Chazhong Ge, Xiaoliang Li, Lu Li, Bin Wang, Aijun Lin, Wenjie Yang
Summary: The novel material nZVI/SS/BC synthesized for the removal of hexavalent chromium from simulated wastewater showed promising results with the use of biochar pyrolyzed at 600 degrees Celsius and soluble starch during synthesis. The material exhibited high adsorption capacity, increased surface area, and improved removal efficiency.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Chemistry, Physical
Devipriya Gogoi, Ashutosh Namdeo, Animes Kumar Golder, Nageswara Rao Peela
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Analytical
Smruti Ranjan Dash, Subhendu Sekhar, Animes Kumar Golder
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Multidisciplinary
Paulomi Bose, Chandan Mukherjee, Animes Kumar Golder
Article
Energy & Fuels
Devipriya Gogoi, Ravi Koyani, Animes Kumar Golder, Nageswara Rao Peela
Article
Environmental Sciences
Animes Kumar Golder, Soma Chauhan, Ravi Ravi
Summary: This study focused on designing and characterizing bentonite, Duranta erecta, and their hybrid beads for removing CTAB from water. The treated beads showed high adsorption capacity and efficiency under various physicochemical conditions, indicating their potential for removing surfactants from industrial waste water to improve water quality.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Devipriya Gogoi, Adit Kumar Shah, Ponnala Rambabu, Mohammad Qureshi, Animes Kumar Golder, Nageswara Rao Peela
Summary: The spatial separation and transport of photo-generated charge carriers are crucial for the efficiency of a photocatalyst for solar energy conversion. In this study, a step-scheme CdS/MnOx-BiVO4 photocatalyst was synthesized and showed excellent photocatalytic activity for overall water-splitting reaction under visible light irradiation without sacrificial reagents. The presence of oxygen vacancies, effective charge separation/transfer properties, and strong interaction of cocatalysts with the photocatalysts in the heterojunction contributed to the high photoactivity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Analytical
Smruti Ranjan Dash, Subhendu Sekhar Bag, Animes Kumar Golder
Summary: The study successfully prepared PtNPs/graphene nanocomposite for sensing of metabolites of dipyrone. The fabrication process was simple and showed good sensing performance. The nanocomposite exhibited stable sensing signals in different samples.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Physical
Devipriya Gogoi, Adit Kumar Shah, Mohammad Qureshi, Animes Kumar Golder, Nageswara Rao Peela
Summary: In this study, ternary Ag-grafted gC3N4-gC3N4 heterostructures were successfully synthesized to achieve higher H2 production rates. The addition of Ag enhanced the localized surface plasmon resonance effect, broadening visible light absorption, and contributed to electron capture due to a high Schottky barrier, leading to improved photocatalytic activity.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Environmental
Ardhendu Sekhar Giri, Animes Kumar Golder, Sankar Chakma
Summary: The study aimed to explore the effectiveness of the UV/H2O2 photolysis process in degrading chloramphenicol (CHPL) drug, finding a pseudo-first-order model for CHPL degradation and identifying 13 intermediate products. Inactivation rates of E. coli decreased due to the reduction of -NO2 group into -NH2 functional group in CHPL during degradation. Anions Cl-, NO3-, and HCO3- showed different inhibitory effects on CHPL degradation.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Anirban Chowdhury, Nageswara Rao Peela, Animes Kumar Golder
Summary: In this study, Cu2O NPs were successfully synthesized from bioactive compounds present in Sechium edule fruit and efficiently decorated on the electrode to catalyze CO2 reduction to HCOO. However, Cu2O NPs undergo oxidation to CuO after a certain number of cycles, leading to a decline in reaction rate.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Analytical
Smruti Ranjan Dash, Subhendu Sekhar Bag, Animes Kumar Golder
Summary: Carbon dots modified glassy carbon electrode was successfully used for electrochemical sensing of Chlorpyrifos. The reduction of CHL involved an irreversible two-electron process with good repeatability and sensitivity. The electrochemical sensing of CHL showed comparable results with HPLC (around 5% variation).
Article
Engineering, Environmental
Paulomi Bose, Chandan Mukherjee, Animes Kumar Golder
Summary: Electrochemical reduction of CO2 using Pb(II)-salen complexes as catalysts deposited on graphite electrodes was explored. The presence of different functional groups facilitated the formation of different carbon products, depending on the ligand framework. The study provides insights into the role of ligands in modifying the substrate and proton concentrations for CO2 reduction.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Anirban Chowdhury, Chandra Bhan, Nageswara Rao Peela, Animes Kumar Golder
Summary: This study focuses on the bioinspired synthesis of SnO2 nanoparticles using S. edule fruit. A mechanistic route for the synthesis of SnO2 nanoparticles has been proposed. The study shows that these nanoparticles can efficiently catalyze the electrochemical reduction of CO2 to formate under specific conditions.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Engineering, Environmental
Subhendu Sekhar Bag, Sayantan Sinha, Aniket Banerjee, Animes Golder
Summary: Careless discharge of textile/industry effluents containing carcinogenic organic dyes into local water bodies has become a major source of wastewater pollution in India. To address this issue, the researchers developed I5+/TiO2 as a smart catalyst with dual functions: colorimetric visual sensing and degradation of the dyes. The catalyst showed excellent ability in both colorimetric sensing and degradation of methyl orange and methylene blue dyes. The treated water was found to be safe for plants and human health, making it suitable for agricultural and household activities.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Santosh Kumar Yedla, Bharath Velaga, Souradip Choudhury, Ashutosh Namdeo, Animes Kumar Golder, Nageswara Rao Peela
REACTION CHEMISTRY & ENGINEERING
(2020)
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)
