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K AK, Jujaru M, Panwar J, Gupta S. Non-derivatizing solvent assisted waste-derived cellulose/ MOF composite porous matrix for efficient metal ion removal: comprehensive analysis of batch and continuous packed-bed column sorption studies. RSC Adv 2024; 14:20254-20277. [PMID: 38953057 PMCID: PMC11215655 DOI: 10.1039/d4ra02566k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 06/17/2024] [Indexed: 07/03/2024] Open
Abstract
The use of metal-organic frameworks (MOFs) for wastewater treatment in continuous operation is a major challenge. To address this, the present study demonstrates the eco-friendly and economic synthesis of Ca-MOF immobilized cellulose beads (Ca-MOF-CB) derived from paper waste. The synthesized Ca-MOF-CB were characterized using standard analytical techniques. Batch sorption studies were performed to check the effect of cellulose composition (wt%), Ca-MOF loading, contact time, and initial metal ion (Pb2+, Cd2+, and Cu2+) concentration. Ca-MOF-CB beads exhibited outstanding equilibrium sorption capacities for Pb2+, Cd2+, and Cu2+, with estimated values of 281.22 ± 7.8, 104.01 ± 10.58, and 114.21 ± 9.68 mg g-1, respectively. Different non-linear isotherms and kinetic models were applied which confirmed the spontaneous, endothermic reactions for the physisorption of Pb2+, Cd2+, and Cu2+. Based on the highest equilibrium sorption capacity for Pb2+ ion, in-depth parametric column studies were conducted in an indigenously developed packed-bed column set-up. The effect of packed-bed height (10 and 20 cm), inlet flow rate (5 and 10 mL min-1), and inlet Pb2+ ion concentration (200, 300, and 500 mg L-1) were studied. The breakthrough curves obtained at different operating conditions were fitted with the empirical models viz. the bed depth service time (BDST), Yoon-Nelson, Thomas, and Yan to estimate the column design parameters. In order to determine the financial implications at large-scale industrial operations, an affordable synthesis cost of 1 kg of Ca-MOF-CB was estimated. Conclusively, the present study showed the feasibility of the developed Ca-MOF-CB for the continuous removal of metal ions at an industrial scale.
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Affiliation(s)
- Anil Kumar K
- Department of Chemical Engineering, Birla Institute of Technology and Science Pilani 333 031 India
| | - Mohan Jujaru
- Department of Chemical Engineering, Birla Institute of Technology and Science Pilani 333 031 India
| | - Jitendra Panwar
- Department of Biological Sciences, Birla Institute of Technology and Science Pilani 333 031 India
| | - Suresh Gupta
- Department of Chemical Engineering, Birla Institute of Technology and Science Pilani 333 031 India
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Raj V, Lee S. State-of-the-art progress on tamarind seed polysaccharide (Tamarindus indica) and its diverse potential applications, a review with insight. Carbohydr Polym 2024; 331:121847. [PMID: 38388032 DOI: 10.1016/j.carbpol.2024.121847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/11/2024] [Accepted: 01/18/2024] [Indexed: 02/24/2024]
Abstract
Tamarind seed polysaccharide (TSP) is a biocompatible, non-ionic polymer with antioxidant properties. Its uses include drug delivery, food industry, and wastewater treatment. TSP has various hydroxy functional groups, one of the most favorable sites for graft copolymerization of different monomers. Hence, various chemical methods for TSP modification were developed to satisfy increasing industrial demand. Of particular interest in scientific community are the methods of graft copolymerization because of their ability to alter the physicochemical properties of TSP, including pH sensitivity and the swelling index, leading to improvements in the adsorption efficiency of hazardous heavy metals and dyes from wastewater effluents. Moreover, in recent years, TSP has been used for controlled drug delivery applications due to its unique advantages of high viscosity, broad pH tolerance, non-carcinogenicity, mucoadhesive properties, biocompatibility, and high drug entrapment capacity. In light of the plethora of literature on the topic, a comprehensive review of TSP-based graft copolymers and unmodified and modified TSP important applications is necessary. Therefore, this review comprehensively highlights several synthetic strategies for TSP-grafted copolymers and discusses unmodified and modified TSP potential applications, including cutting-edge pharmaceutical, environmental applications, etc. In brief, its many advantages make TSP-based polysaccharide a promising material for applications in various industries.
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Affiliation(s)
- Vinit Raj
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea
| | - Sangkil Lee
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea.
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K AK, Mahesh Y, Panwar J, Gupta S. Remediation of multifarious metal ions and molecular docking assessment for pathogenic microbe disinfection in aqueous solution by waste-derived Ca-MOF. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:21545-21567. [PMID: 38393560 DOI: 10.1007/s11356-024-32311-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 01/29/2024] [Indexed: 02/25/2024]
Abstract
The present study demonstrates an eco-friendly and cost-effective synthesis of calcium terephthalate metal-organic frameworks (Ca-MOF). The Ca-MOF were composed of metal ions (Ca2+) and organic ligands (terephthalic acid; TPA); the former was obtained from egg shells, and the latter was obtained from processing waste plastic bottles. Detailed characterization using standard techniques confirmed the synthesis of Ca-MOF with an average particle size of 461.9 ± 15 nm. The synthesized Ca-MOF was screened for its ability to remove multiple metal ions from an aqueous solution. Based on the maximum sorption capacity, Pb2+, Cd2+, and Cu2+ ions were selected for individual parametric batch studies. The obtained results were interpreted using standard isotherms and kinetic models. The maximum sorption capacity (qm) obtained from the Langmuir model was found to be 644.07 ± 47, 391.4 ± 26, and 260.5 ± 14 mg g-1 for Pb2+, Cd2+, and Cu2+, respectively. Moreover, Ca-MOF also showed an excellent ability to remove all three metal ions simultaneously from a mixed solution. The metal nodes and bonded TPA from Ca-MOF were dissociated by the acid dissolution method, which protonated and isolated TPA for reuse. Further, the crystal structure of Ca-MOF was prepared and docked with protein targets of selected pathogenic water-borne microbes, which showed its disinfection potential. Overall, multiple metal sorption capability, regeneration studies, and broad-spectrum antimicrobial activity confirmed the versatility of synthesized Ca-MOF for industrial wastewater treatment.
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Affiliation(s)
- Anil Kumar K
- Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani, 333031, India
| | - Yeshwanth Mahesh
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Jitendra Panwar
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, 333031, India
| | - Suresh Gupta
- Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani, 333031, India.
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K AK, Panwar J, Gupta S. One-pot synthesis of metal oxide-clay composite for the evaluation of dye removal studies: Taguchi optimization of parameters and environmental toxicity studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:61541-61561. [PMID: 36280640 DOI: 10.1007/s11356-022-23752-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 10/17/2022] [Indexed: 05/10/2023]
Abstract
The present study demonstrates the synthesis of eco-friendly metal oxide-clay composites (MgO-clay and CaO-clay) with phytochemical functionalization. The physical and chemical properties of prepared composites were characterized using standard techniques viz. scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction. The effect of pH on the dye adsorption capability of the synthesized composites was studied. The adsorption of an anionic dye methyl orange (MO) and a cationic due methylene blue (MB) was favored in the acidic and basic regions, respectively. The Taguchi design approach was adopted for the removal of MO and MB from wastewater using the synthesized composites. The obtained results suggest that initial dye concentration and composite dosage were the most influential parameters in dye removal among all the studied parameters. The adsorption experiments were carried out using MgO-clay and CaO-clay composites with the optimum conditions obtained from Taguchi optimization to validate the predicted response. The experimental parameters viz. the effect of contact time, initial dye concentration, and solution temperature were studied for screened composite (CaO-clay) with optimized conditions. The obtained results were interpreted using standard isotherms and kinetic models. A maximum adsorption capacity of 571 ± 10 and 859 ± 14 mg g-1 was obtained from the Langmuir adsorption isotherm for MO and MB, respectively. Regeneration studies suggested that the CaO-clay composite can be utilized up to 3 cycles with reduced adsorption capacity of the dyes over cycles due to the solid binding nature of dyes on the CaO-clay composite. The fresh and utilized CaO-clay composite were tested for their environmental toxicity analysis using ecologically important soil microorganisms. The obtained results suggested no detrimental effects on soil microbe's functionality, indicating their threat-free disposal in the soil environment.
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Affiliation(s)
- Anil Kumar K
- Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani, 333 031, India
| | - Jitendra Panwar
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, 333 031, India
| | - Suresh Gupta
- Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani, 333 031, India.
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Pathy A, Pokharel P, Chen X, Balasubramanian P, Chang SX. Activation methods increase biochar's potential for heavy-metal adsorption and environmental remediation: A global meta-analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 865:161252. [PMID: 36587691 DOI: 10.1016/j.scitotenv.2022.161252] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 12/23/2022] [Accepted: 12/24/2022] [Indexed: 06/17/2023]
Abstract
Removal of heavy metals (HMs) by adsorption on biochar's surface has shown promising results in the remediation of contaminated soil and water. The adsorption capacity of biochar can be altered by pre- or post-pyrolysis activation; however, the effect of activation methods on biochar's adsorption capacity varies widely. Here, we conducted a meta-analysis to identify the most effective methods for activation to enhance HM removal by biochar using 321 paired observations from 50 published articles. Activation of biochar significantly improves the adsorption capacity and removal efficiency of HMs by 136 and 80 %, respectively. This study also attempts to find suitable feedstocks, pyrolysis conditions, and physicochemical properties of biochar for maximizing the effect of activation of biochar for HMs adsorption. Activation of agricultural wastes and under pyrolysis temperatures of 350-550 °C produces biochars that are the most effective for HM adsorption. Activation of biochars with a moderate particle size (0.25-0.80 mm), low N/C (<0.01) and H/C ratios (<0.03), and high surface area (> 100 m2 g-1) and pore volume (> 0.1 cm3 g-1) are the most desirable characteristics for enhancing HM adsorption. We conclude that pre-pyrolysis activation with metal salts/oxides was the most effective method of enhancing biochar's potential for adsorption and removal of a wide range of HMs. The results obtained from this study can be helpful in choosing appropriate methods of activations and the suitable choice of feedstocks and pyrolysis conditions. This will maximize HM adsorption on biochar surfaces, ultimately benefiting the remediation of contaminated environments.
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Affiliation(s)
- Abhijeet Pathy
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada; Land Reclamation International Graduate School, University of Alberta, Edmonton, Alberta, Canada
| | - Prem Pokharel
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
| | - Xinli Chen
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
| | - Paramasivan Balasubramanian
- Agricultural and Environmental Biotechnology Group, Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, India
| | - Scott X Chang
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada; Land Reclamation International Graduate School, University of Alberta, Edmonton, Alberta, Canada.
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Bisla V, Kawamura I, Yoshitake H. Cross-linked cellulose acetate aminosilane (CAAS) for aqueous arsenic (V) adsorption. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2022. [DOI: 10.1016/j.carpta.2022.100259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Narayanasamy S, Sundaram V, Sundaram T, Vo DVN. Biosorptive ascendency of plant based biosorbents in removing hexavalent chromium from aqueous solutions - Insights into isotherm and kinetic studies. ENVIRONMENTAL RESEARCH 2022; 210:112902. [PMID: 35167851 DOI: 10.1016/j.envres.2022.112902] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/22/2022] [Accepted: 02/04/2022] [Indexed: 06/14/2023]
Abstract
Chromium is a toxic heavy metal prevalent in higher levels in aqueous matrices owing to industrial applications. Whilst being a key player in industries, the environmental issues caused by Cr(VI) are highly deleterious. Adsorptive remediation is found to be an effective method adopted by researchers in the past decades for Cr(VI) removal from water streams in which variety of naturally available biosorbents have been explored for handling Cr(VI). This review article briefly sketches up the biosorptive potential of plant-based biosorbents used in raw and chemically modified form for the optimum exclusion of Cr(VI) from aqueous sources. Mechanisms and kinetic behavior of the removal process are also discussed. pH of the solution and initial Cr(VI) concentration were found to be the key parameters in Cr removal. The mechanism of Cr removal from aqueous systems was elucidated to be either adsorption or adsorption-coupled-reduction. After precise discussion on various plant-based biosorbents with their maximum adsorption capacities, desorption and regeneration potential, it is perceived that plant-based biosorbents are superior options for Cr(VI) elimination from aqueous streams.
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Affiliation(s)
- Saranya Narayanasamy
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, Tamil Nadu, India
| | - Vickram Sundaram
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, Tamil Nadu, India
| | - Thanigaivel Sundaram
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, Tamil Nadu, India.
| | - Dai-Viet N Vo
- Institute of Environmental Technology and Sustainable Development, Nguyen Tat Thanh University, Ho Chi Minh City, 755414, Viet Nam.
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Nairat N, Hamed O, Berisha A, Jodeh S, Algarra M, Azzaoui K, Dagdag O, Samhan S. Cellulose polymers with β-amino ester pendant group: design, synthesis, molecular docking and application in adsorption of toxic metals from wastewater. BMC Chem 2022; 16:43. [PMID: 35689266 PMCID: PMC9188135 DOI: 10.1186/s13065-022-00837-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 05/31/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cellulose polymers with multidentate chelating functionalities that have high efficiency for toxic metal ions present in water were designed, synthesized, and analyzed. The synthesis was carried out by reacting microcrystalline cellulose extracted from the solid waste of the olive industry with tert-Butyl acetoacetate (Cell-AA), produced cellulose with β-ketoester functionality was then reacted with aniline and the amino acid glycine to produce Cell-β-AN and Cell-β-GL, respectively. RESULTS The adsorption efficiency of the three polymers toward Pb(II) and various toxic metal ions present in sewage was evaluated as a function of adsorbent dose, time, temperature, pH value, and initial ion concentration to determine optimum adsorption conditions. The three polymers showed excellent efficiency toward about 20 metal ions present in a sewage sample collected from the sewer. The adsorption process follows the Langmuir adsorption isotherm model with a second-order of adsorption rate, the calculated qe values (2.675, 15.252, 20.856 mg/g) were close to the experimental qe values (2.133, 13.91, 18.786 mg/g) for the three polymers Cell-AA, Cell-β-AG and Cell-β-AN, respectively. Molecular Dynamic (MD) and Monte Carlo (MC) simulations were performed on the three polymers complexed with Pb(II). CONCLUSION The waste material of the olive industry was used as a precursor for making the target cellulose polymers with β-Amino Ester Pendant Group. The polymer was characterized by SEM, proton NMR, TGA, and FT-IR spectroscopy. The efficacy of adsorption was quantitative for metal ions present in a real sample of wastewater and the efficiency didn't drop even after 7 cycles of use. The results indicate the existence of strong complexation. The thermodynamic study results showed a spontaneous bonding between of Pb(II) and the polymers pendant groups expressed by the negative value of the Gibbs free energy.
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Affiliation(s)
- Noor Nairat
- Chemistry Department, Faculty of Science, An-Najah National University, P.O. Box 7, Nablus, Palestine
| | - Othman Hamed
- Chemistry Department, Faculty of Science, An-Najah National University, P.O. Box 7, Nablus, Palestine.
| | - Avni Berisha
- Department of Chemistry, Faculty of Natural and Mathematics Science, University of Prishtina, Prishtina, 10000, Kosovo.,Materials Science-Nanochemistry Research Group, NanoAlb-Unit of Albanian Nanoscience and Nanotechnology, 1000, Tirana, Albania
| | - Shehdeh Jodeh
- Chemistry Department, Faculty of Science, An-Najah National University, P.O. Box 7, Nablus, Palestine.
| | - Manuel Algarra
- Department of Science, INAMAT2 Institute for Advanced Materials and Mathematics, Public University of Navarra, Campus of Arrosadia, 31006, Pamplona, Spain
| | - Khalil Azzaoui
- Laboratory of Mineral Solid and Analytical Chemistry LMSAC, Department of Chemistry, Faculty of Sciences, Mohamed 1st University, P.O. Box 717, Oujda, Morocco
| | - Omar Dagdag
- Institute of Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg, South Africa
| | - Subhi Samhan
- Palestine Water Authority, Ramallah, 00001, Palestine
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Nguyen TB, Truong QM, Chen CW, Chen WH, Dong CD. Pyrolysis of marine algae for biochar production for adsorption of Ciprofloxacin from aqueous solutions. BIORESOURCE TECHNOLOGY 2022; 351:127043. [PMID: 35337990 DOI: 10.1016/j.biortech.2022.127043] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Abstract
Biochars derived from three species of algae was synthesized by impregnating the green algae Ulva Ohnoi, red algae Agardhiella subulata, and brown algae Sargassum hemiphyllum with ZnCl2 chemical activator and employed as a long-term adsorbent for ciprofloxacin (CIP) removal from water. The results revealed that combination of brown algae and ZnCl2 chemical activator (ZBAB) successfully produced mesoporous biochar with excellent physicochemical characteristics and gave the best CIP adsorption capacity. The ZBAB yielded a high CIP adsorption capacity (190-300 mg g-1) under various parameter effects (initial pH, temperature and major ions). Throughought the surface characterization techniques, the proposed adsorption mechanisms were electrostatic interaction, π-π EDA interaction, pore filling and hydrogen bonding. Moreover, not only algal biochars exhibited innovative and potential adsorbent for rapid and effective remediate pollution from water, but combination of algal biomass and ZnCl2 activator also created renewable source of energy from biomass pyrolysis.
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Affiliation(s)
- Thanh-Binh Nguyen
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Quoc-Minh Truong
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Faculty of Management Science, Thu Dau Mot University, Binh Duong 75000, Vietnam
| | - Chiu-Wen Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Wei-Hsin Chen
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan
| | - Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
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Malik V, Saya L, Gautam D, Sachdeva S, Dheer N, Arya DK, Gambhir G, Hooda S. Review on adsorptive removal of metal ions and dyes from wastewater using tamarind-based bio-composites. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03991-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Basnet P, Gyawali D, Nath Ghimire K, Paudyal H. An assessment of the lignocellulose-based biosorbents in removing Cr(VI) from contaminated water: A critical review. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Samuel MS, Selvarajan E, Chidambaram R, Patel H, Brindhadevi K. Clean approach for chromium removal in aqueous environments and role of nanomaterials in bioremediation: Present research and future perspective. CHEMOSPHERE 2021; 284:131368. [PMID: 34225115 DOI: 10.1016/j.chemosphere.2021.131368] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 06/14/2021] [Accepted: 06/26/2021] [Indexed: 05/25/2023]
Abstract
Chromium is an insidious ecological pollutant that is of huge value for its toxicity. The existing ecological objective to lower the heights of toxic materials in marine systems and to stimulate the existing water to recycle after suitable treatment of wastewater. Chromium is a hazard element that appears in discharges of numerous industries that must be diminished to accomplish the goals. Nearly all of the findings described in the literature related to the usage of various materials such as fungal, algal, bacterial biomass, and nanomaterials for chromium adsorption. The current work evaluates the findings of research commenced in the preceding on the use of a variety of adsorbents to decrease chromium concentrations in contaminated waters. This review article focuses on the issue of chromium contamination, its chemistry, causes, consequences, biological agent remediation techniques, and the detailed process of chromium detoxification in microbial cells. It also lists a description of the in situ and ex situ chromium bioremediation methods used. This can help design more effective Cr(VI) removal methods, thus bridging the difference between laboratory discoveries and industrial chromium remediation applications.
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Affiliation(s)
- Melvin S Samuel
- Department of Materials Science and Engineering, CEAS, University of Wisconsin-Milwaukee, Milwaukee, WI, 53211, United States
| | - E Selvarajan
- Department of Genetic Engineering, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
| | | | - Himanshu Patel
- Applied Science and Humanities Department, Pacific School of Engineering, Kadodara, Palasana Road, Surat, 394305, Gujarat, India
| | - Kathirvel Brindhadevi
- Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
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Rajesh Kumar, Verma S, Harwani G, Patidar D. Adsorptive and Kinetic Studies of the Extraction of Toxic Metal Ion from Contaminated Water Using Modified Montmorillonites. J WATER CHEM TECHNO+ 2021. [DOI: 10.3103/s1063455x21040068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Papaoikonomou L, Labanaris K, Kaderides K, Goula AM. Adsorption-desorption of phenolic compounds from olive mill wastewater using a novel low-cost biosorbent. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:24230-24244. [PMID: 31865583 DOI: 10.1007/s11356-019-07277-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
Several materials have been investigated for the adsorption of olive mill wastewater phenolic compounds. However, researchers have focused on the development of novel, low-cost, with high adsorption capacity adsorbents, originated from the food industry as by-products. The aim of this work was the investigation of the effectiveness of a juice industry by-product, pomegranate seed, for the adsorption of olive mill wastewater phenols. Furthermore, chemical activation and thermal activation of the adsorbent took place in order to improve total phenols uptake and afterwards, desorption process in hydrochloric acid was studied. After the determination of equilibrium time, the effects of temperature (20-60 °C), solution's pH (4.0-8.0), initial sorbate concentration (50-500 mg/L), sorbent mass concentration (0.01-0.05 g/mL OMW), and sorbent particle size (0.149-1.180 mm) on adsorption yield were studied performing batch experiments. The maximum phenols uptake observed was 92.8% after 10 min, at 30 °C and a pH of 5.0, with an initial sorbate concentration of 162.5 mg/L, a sorbent mass concentration of 0.02 g/mL, and a sorbent particle size of 0.922 mm. Langmuir, Freundlich, and Temkin isotherms were developed for the equilibrium description, while pseudo-first-order, pseudo-second-order, and intra-particle diffusion models were applied to investigate adsorption kinetics. The experimental data were best fitted to the Langmuir model, whereas the kinetic data followed the pseudo-first-order kinetic model. The results of the study were promising indicating that pomegranate seed could be used as a novel and low-cost biosorbent. Graphical abstract.
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Affiliation(s)
- Lygeri Papaoikonomou
- Department of Food Science and Technology, School of Agriculture, Forestry and Natural Environment, Aristotle University, 541 24, Thessaloniki, Greece
| | - Konstantinos Labanaris
- Department of Food Science and Technology, School of Agriculture, Forestry and Natural Environment, Aristotle University, 541 24, Thessaloniki, Greece
| | - Kyriakos Kaderides
- Department of Food Science and Technology, School of Agriculture, Forestry and Natural Environment, Aristotle University, 541 24, Thessaloniki, Greece
| | - Athanasia M Goula
- Department of Food Science and Technology, School of Agriculture, Forestry and Natural Environment, Aristotle University, 541 24, Thessaloniki, Greece.
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Aloulou H, Ghorbel A, Aloulou W, Ben Amar R, Khemakhem S. Removal of fluoride ions (F -) from aqueous solutions using modified Turkish zeolite with quaternary ammonium. ENVIRONMENTAL TECHNOLOGY 2021; 42:1353-1365. [PMID: 31524562 DOI: 10.1080/09593330.2019.1668863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 09/11/2019] [Indexed: 06/10/2023]
Abstract
The natural Turkish zeolite has been modified with hexadecyltrimethylammonium bromide (CTAB) for the elimination of fluoride (F-) from aqueous solutions. The parent natural zeolite (NZ) and modified zeolite (MZ) have been characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), zeta potentials and Brunauer-Emmett-Teller (BET) method. The effect of pH, adsorbent dose, contact time, initial concentration and temperature on adsorption of fluoride ions onto modified zeolite (MZ) has been determined in batch experiments. Fluoride concentration can be reduced to 1.5 mg/L under the optimum condition (pH = 5, adsorbent dose = 20 mg/L, contact time = 60 min and T = 293 K) when initial fluoride concentration of 10 mg/L is employed. The fluoride adsorption on MZ has been described by the Langmuir isotherm and the maximum fluoride adsorption capacity was found as 2.994 mg/g. Kinetics data were best described by the pseudo-second-order model. The thermodynamic studies proved that the adsorption was exothermic and spontaneous.
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Affiliation(s)
- Hajer Aloulou
- Faculté des Sciences de Sfax, Laboratoire Sciences des Matériaux et Environnement, Université de Sfax, Sfax, Tunisia
| | - Ali Ghorbel
- Faculté des Sciences de Monastir, Laboratoire de Chimie Hétérocyclique, Produits Naturels et Réactivité (CHPNR), Monastir, Tunisia
| | - Wala Aloulou
- Faculté des Sciences de Sfax, Laboratoire Sciences des Matériaux et Environnement, Université de Sfax, Sfax, Tunisia
| | - Raja Ben Amar
- Faculté des Sciences de Sfax, Laboratoire Sciences des Matériaux et Environnement, Université de Sfax, Sfax, Tunisia
| | - Sabeur Khemakhem
- Faculté des Sciences de Sfax, Laboratoire Sciences des Matériaux et Environnement, Université de Sfax, Sfax, Tunisia
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16
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Removal of aqueous Cr(VI) by magnetic biochar derived from bagasse. Sci Rep 2020; 10:21473. [PMID: 33293648 PMCID: PMC7722720 DOI: 10.1038/s41598-020-78142-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 11/11/2020] [Indexed: 01/24/2023] Open
Abstract
We prepared a novel adsorbent functionalized by bagasse magnetic biochar (BMBC). To study the removal behaviors and mechanisms of Cr(VI) by BMBC, batch adsorption experiments were conducted by modifying variables, such as pH, adsorption time, BMBC dosages, initial Cr concentration, co-existing ions, and ionic strength, and characterizing BMBC before and after Cr(VI) adsorption. BMBC was primarily composed of Fe2O3 and Fe3O4 on bagasse boichar with an amorphous structure. The specific surface area of BMBC was 81.94 m2 g−1, and the pHpzc of BMBC was 6.2. The fabricated BMBC showed high adsorption performance of Cr(VI) in aqueous solution. The maximum Cr(VI) adsorption capacity of BMBC was 29.08 mg g−1 at 25 ºC, which was much higher than that of conventional biochar sorbents. The adsorption process followed pseudo-second-order kinetics and could be explained by the involvement of the Langmuir isotherm in monolayer adsorption. The crystalline structure of Fe3O4 in the BMBC changed slightly during the adsorption process; Fe3O4 improved the adsorption of Cr(VI) on BMB. The desorption capacity of Cr(VI) was 8.21 mg g−1 when 0.2 mol L−1 NaOH was used as the desorption solution. After being reused three times, the removal efficiency is still as high as 80.36%.
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17
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Jiang H, Yang Y, Lin Z, Zhao B, Wang J, Xie J, Zhang A. Preparation of a novel bio-adsorbent of sodium alginate grafted polyacrylamide/graphene oxide hydrogel for the adsorption of heavy metal ion. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 744:140653. [PMID: 32693272 DOI: 10.1016/j.scitotenv.2020.140653] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/22/2020] [Accepted: 06/29/2020] [Indexed: 05/27/2023]
Abstract
A novel bio-adsorbent named SA-PAM/GO hydrogel composites was synthesized through free radical polymerization. The structure and performance were characterized and analyzed by BET, SEM-EDS, FTIR and TGA. After modification, the BET surface area increased more than tripled, which was consistent with SEM results. Under optimal conditions, the maximum adsorption capacity of Cu2+ and Pb2+ were 68.76 mg/g and 240.69 mg/g, respectively. In addition, the research of kinetics and isotherms displayed that the pseudo-second-order kinetic model and the Langmuir isotherm model fitted the data well. After further research, the different adsorption mechanism including physical adsorption, chemical adsorption and electrostatic interactions were discussed. The chemical adsorption accompanying the ion exchange process was confirmed as the staple adsorption mechanism. Furthermore, the adsorbent still maintained good adsorption capacity after 5 cycles of adsorption-regeneration. Therefore, the SA-PAM/GO hydrogel composites have potential to remove the heavy metal ions from water body effectively.
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Affiliation(s)
- Huabin Jiang
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, PR China
| | - Yuru Yang
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, PR China
| | - Zongkun Lin
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, PR China
| | - Binchan Zhao
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, PR China
| | - Jing Wang
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, PR China
| | - Jun Xie
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, PR China
| | - Aiping Zhang
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, PR China.
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18
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Exhaustive studies on toxic Cr(VI) removal mechanism from aqueous solution using activated carbon of Aloe vera waste leaves. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112956] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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19
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Fan H, Ma Y, Wan J, Wang Y, Li Z, Chen Y. Adsorption properties and mechanisms of novel biomaterials from banyan aerial roots via simple modification for ciprofloxacin removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 708:134630. [PMID: 31806343 DOI: 10.1016/j.scitotenv.2019.134630] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 08/26/2019] [Accepted: 09/22/2019] [Indexed: 06/10/2023]
Abstract
The study investigated ciprofloxacin (CIP) adsorption capacity of the novel biomaterials prepared from banyan aerial roots by simple thermochemical modification. Pretreated banyan aerial root fibers were modified with a green reagent citric acid (1 M) at 90, 120 and 150 °C, which enhanced the fiber adsorption capacity revealed by characterization and adsorption tests. Several characterization methods were applied to exploring the surface morphologies and physicochemical properties of unmodified banyan aerial roots (UBARs) and modified banyan aerial roots (T-MBARs, T stands for the modification temperature). Based on SEM images and N2 adsorption/desorption isotherms, the modification resulted in decrease of the specific surface area owing to cellulose molecular linking. In that case, the improved CIP adsorption of MBARs might be attributed to the larger carboxyl quantity and stronger electronegativity manifested via FTIR spectra and zeta potential analysis. Through the adsorption experiments, the optimal pH value of 8 and the suitable absorbent dosage of 0.03 g were obtained. The simulation results showed that the Freundlich model can fit the adsorption thermodynamic data quite well, while the kinetic data was simulated preferably by the pseudo-second-order kinetic equation signifying the chemical adsorption process, and the intra-particle diffusion was involved in the adsorption consisted of three stages. The findings of batch experiments under diverse operations represented that MBARs purified aqueous CIP better than UBARs, closely related to the superior electronegativity. Both characterization and adsorption studies illustrated the dominant role of electrostatic interaction during CIP removal, accompanied by hydrogen bonding and diffusion interaction besides. The present work suggested that MBAR fibers could possess a promising application to ciprofloxacin potent removal from aqueous solutions.
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Affiliation(s)
- Huimin Fan
- School of Environment and Energy, South China University of Technology, 382 Zhonghuan Road East, Panyu District, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China.
| | - Yongwen Ma
- School of Environment and Energy, South China University of Technology, 382 Zhonghuan Road East, Panyu District, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Sino-Singapore International Joint Research Institute, Guangzhou 510006, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou 510640, China.
| | - Jinquan Wan
- School of Environment and Energy, South China University of Technology, 382 Zhonghuan Road East, Panyu District, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Sino-Singapore International Joint Research Institute, Guangzhou 510006, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou 510640, China.
| | - Yan Wang
- School of Environment and Energy, South China University of Technology, 382 Zhonghuan Road East, Panyu District, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Guangdong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center, Guangzhou 510640, China.
| | - Zhen Li
- School of Environment and Energy, South China University of Technology, 382 Zhonghuan Road East, Panyu District, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Yun Chen
- School of Environment and Energy, South China University of Technology, 382 Zhonghuan Road East, Panyu District, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
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20
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Ezekoye OM, Akpomie KG, Eze SI, Chukwujindu CN, Ani JU, Ujam OT. Biosorptive interaction of alkaline modified Dialium guineense seed powders with ciprofloxacin in contaminated solution: central composite, kinetics, isotherm, thermodynamics, and desorption. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2020; 22:1028-1037. [PMID: 32062984 DOI: 10.1080/15226514.2020.1725869] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This work evaluated the use of Dialium guineense seed waste (DGS) and its sodium hydroxide modified form (NH-DGS) as biosorbent for ciprofloxacin (CPF) from synthetic solution as well as the desorption potentials. Central composite design (CCD) was applied for optimization of the alkaline treated biosorbent by response surface methodology using design expert. Both biosorbents were characterized by FTIR, SEM, EDX, and BET analysis. The CCD showed NaOH concentration of 0.46 M and temperature of 96 °C to be effective for optimized modification of NH-DGS. Optimum removal of CPF was obtained at pH 6.0, contact time 120 min, temperature 300 K, and dosage of 0.1 g. The Freundlich model gave the best fit compared to the other isotherms tested with R2 values >0.97951. NH-DGS exhibited a maximum uptake capacity of 120.34 mg/g higher than some reported adsorbents for CPF. The pseudo-second-order model was suitable in the fitting of the kinetic data. A non-spontaneous process was obtained for CPF biosorption on DGS which became spontaneous after alkaline treatment. Over 84% desorption of CPF was achieved on both biosorbents using 0.3 M HCl which envisaged the use of NH-DGS as an efficient material for treatment of waters contaminated with CPF.
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Affiliation(s)
- Oluchi M Ezekoye
- Department of Pure & Industrial Chemistry, University of Nigeria, Nsukka, Nigeria
| | - Kovo G Akpomie
- Department of Pure & Industrial Chemistry, University of Nigeria, Nsukka, Nigeria
- Department of Chemistry, University of the Free State, Bloemfontein, South Africa
| | - Samson I Eze
- Department of Pure & Industrial Chemistry, University of Nigeria, Nsukka, Nigeria
| | - Christian N Chukwujindu
- Materials and Energy Technology Department, Projects Development Institute (PRODA), Enugu, Nigeria
| | - Julius U Ani
- Department of Pure & Industrial Chemistry, University of Nigeria, Nsukka, Nigeria
| | - Oguejiofo T Ujam
- Department of Pure & Industrial Chemistry, University of Nigeria, Nsukka, Nigeria
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21
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Kumar R, Malodia P, Kachwaha M, Verma S. Adsorptive and Kinetic Studies of Resin for Removal of Cs+ and Sr2+ from Aqueous Solution. J WATER CHEM TECHNO+ 2019. [DOI: 10.3103/s1063455x19050047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Removal of Cr(VI) from aqueous solution using amine-impregnated crab shells in the batch process. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.04.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Hamed O, Lail BA, Deghles A, Qasem B, Azzaoui K, Obied AA, Algarra M, Jodeh S. Synthesis of a cross-linked cellulose-based amine polymer and its application in wastewater purification. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:28080-28091. [PMID: 31363973 DOI: 10.1007/s11356-019-06001-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 07/16/2019] [Indexed: 06/10/2023]
Abstract
A cross-linked cellulose-amine polymer composed of nanocrystalline cellulose and 1,4-pheneylnediamine was synthesized, and its application as an adsorbent of metal ions from wastewater was dementated. The nanocrystalline cellulose was generated from an olive industry solid waste. The cross-linked polymer analysis results of FTIR, NMR, TEM, SEM, and XRD were generated. The adsorption efficiency of the cellulose-amine polymer toward Cu(II) and Pb(II) was investigated as a function of adsorbent dose, temperature, pH, and time. The adsorption parameters that lead to an excellent adsorption efficiency were determined. The polymer also showed an excellent extraction efficiency toward 20 metal ions present in a sewage sample. The various functional groups present on polymer surface such as amino, hydroxyl, and aryl played a crucial role on metal adsorption. Thermodynamic analysis results support the high efficiency of the polymer toward the metal ions. Kinetic study results reveal that the adsorption process fits well with the pseudo-second-order model and the adsorption isotherm follows a Langmuir isotherm model.
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Affiliation(s)
- Othman Hamed
- Department of Chemistry, College of Science, An-Najah National University, Nablus, Palestinian Territories.
| | - Bahia Abu Lail
- Department of Chemistry, College of Science, An-Najah National University, Nablus, Palestinian Territories
| | - Abdalhadi Deghles
- Graduate Studies Department, Al-Istiqlal University, Ariha, Palestinian Territories.
| | - Basima Qasem
- Graduate Studies Department, Al-Istiqlal University, Ariha, Palestinian Territories
| | - Khalil Azzaoui
- Laboratory of Mineral Solid and Analytical Chemistry LMSAC, Department of Chemistry, Faculty of Sciences, Mohamed 1st University, P.O. Box 717, Oujda, Morocco
| | - Ahmad Abu Obied
- Department of Chemistry, College of Science, An-Najah National University, Nablus, Palestinian Territories
| | - Manuel Algarra
- CQM-Centro de Química da Madeira, Universidade da Madeira, Campus da Penteada, 9020-105, Funchal, Portugal
| | - Shehdeh Jodeh
- Department of Chemistry, College of Science, An-Najah National University, Nablus, Palestinian Territories
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24
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Liu X, Huang L, Wang L, Wang C, Wu X, Dong G, Liu Y. Preparation, adsorptive properties and chemical regeneration studies of high-porous activated carbon derived from Platanus orientalis leaves for Cr(VI) removal. JOURNAL OF WATER AND HEALTH 2018; 16:814-826. [PMID: 30285962 DOI: 10.2166/wh.2018.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Activated carbon (AC) was prepared from Platanus orientalis leaves by H3PO4 activation using a microwave heating method and characterized by SEM (scanning electron microscopy), Brunauer-Emmett-Teller (BET) surface area analysis and FTIR (Fourier transform infrared spectroscopy) techniques. AC exhibited a surface area of 1089.67 m2/g and a relatively high pore volume of 1.468 cm3/g. Utilization of AC for the removal of Cr(VI) from aqueous solution was researched. The adsorption efficiency was highly pH dependent and adsorption capacity of AC for Cr(VI) could reach up to 135.24 mg/g. Adsorption equilibrium could be quickly reached within 2 h. A kinetic study indicated that the adsorption of Cr(VI) conformed to the pseudo-second-order model (R2 > 0.99). An intraparticle diffusion model was applied to describe the adsorption kinetics, and the results showed that there are other factors that affect the rate. Chemical regeneration for AC saturated with Cr(VI) was performed and HNO3 displayed the best regeneration performance among the four chemical regeneration agents (HNO3, H2SO4, NaOH, NaCl). The regeneration performance increased at first and then decreased with the rise of HNO3 concentration, and regeneration reaction could reach equilibrium within 4 h in the first cycle. The FTIR spectra revealed that HNO3 successfully introduced N-H bonds onto the AC surface in the regeneration process.
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Affiliation(s)
- Xiaowei Liu
- School of Environmental Science and Engineering, Shandong University, No. 27, Shandanan Road, Jinan 250100, Shandong, China E-mail:
| | - Lihui Huang
- School of Environmental Science and Engineering, Shandong University, No. 27, Shandanan Road, Jinan 250100, Shandong, China E-mail:
| | - Lisha Wang
- School of Environmental Science and Engineering, Shandong University, No. 27, Shandanan Road, Jinan 250100, Shandong, China E-mail:
| | - Chuang Wang
- School of Environmental Science and Engineering, Shandong University, No. 27, Shandanan Road, Jinan 250100, Shandong, China E-mail:
| | - Xueyuan Wu
- School of Environmental Science and Engineering, Shandong University, No. 27, Shandanan Road, Jinan 250100, Shandong, China E-mail:
| | - Guihua Dong
- School of Environmental Science and Engineering, Shandong University, No. 27, Shandanan Road, Jinan 250100, Shandong, China E-mail:
| | - Yangyang Liu
- School of Environmental Science and Engineering, Shandong University, No. 27, Shandanan Road, Jinan 250100, Shandong, China E-mail:
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25
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Başaran Kankiliç G, Metin AÜ, Aluç Y, Bozkaya O. Bioremoval of mercury (II) from aqueous solutions by Phragmites australis: Kinetic and equilibrium studies. J DISPER SCI TECHNOL 2018. [DOI: 10.1080/01932691.2018.1463243] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Gökben Başaran Kankiliç
- Department of Biology, Faculty of Arts and Sciences, Kırıkkale University, Kırıkkale, Turkey
| | - Ayşegül Ülkü Metin
- Department of Chemistry, Faculty of Arts and Sciences, Kırıkkale University, Kırıkkale, Turkey
| | - Yaşar Aluç
- Kırıkkale University Scientific and Technological Research Application and Research Center, Kırıkkale, Turkey
| | - Ogün Bozkaya
- Kırıkkale University Scientific and Technological Research Application and Research Center, Kırıkkale, Turkey
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26
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Chatterjee S, Mukherjee M, De S. Defluoridation using novel chemically treated carbonized bone meal: batch and dynamic performance with scale-up studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:18161-18178. [PMID: 29696535 DOI: 10.1007/s11356-018-2025-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 04/12/2018] [Indexed: 06/08/2023]
Abstract
Novel defluoridating adsorbent was synthesized by chemical treatment of carbonized bone meal using aluminum sulfate and calcium oxide. Precursor for chemical treatment was prepared by partial carbonization of raw bone meal at 550 °C for 4 h. Maximum fluoride removal capacity was 150 mg/g when carbonized bone meal (100 g/L) was treated with aluminum sulfate (500 g/L) and calcium oxide (15 g/L). Morphological analysis revealed formation of a coating layer consisting of aluminum compounds on the precursor surface. This was verified by stretching frequency of aluminum hydroxide (602 cm-1) in the infrared spectra. Presence of hydroxylapatite (2θ = 30° and 2θ = 24°) and aluminum mineral phases (2θ = 44°) in the adsorbent were identified from the X-ray diffractograms. Adsorption capacity decreased from 150 mg/g (30 °C) to 120 mg/g (50 °C) indicating exothermic adsorption. Adsorption experiments under batch kinetic mode were simulated using shrinking core model. Effective fluoride diffusivity in the adsorbent and the mass transfer coefficient were estimated as 5.8 × 10-12 m2/s and 9 × 10-4 m/s, respectively. Desorption was maximum at basic pH and desorption efficiency was decreased by 31% after third cycle. Dynamic filtration with artificially fluoride-spiked solution showed that the empty bed contact time for a packed column with equal weight of carbonized and chemically treated adsorbent was 4.7 min and number of bed volumes treated (till WHO limit of 1.5 mg/L) was 340 for a column of 3-cm diameter and 18-cm length. The system was successfully tested using contaminated groundwater from an affected area. Fixed-bed column experiments were simulated from the first principles using convective pore diffusion-adsorption model for both synthetic solution and contaminated groundwater. Axial dispersion coefficient was found to be one order of magnitude less than the pore diffusivity indicating dominance of fluoride diffusion within porous network of adsorbent. The developed adsorbent exhibited antibacterial property as well.
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Affiliation(s)
- Somak Chatterjee
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Munmun Mukherjee
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Sirshendu De
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India.
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27
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Venkatesan G, Narayanan SL. Synthesis of Fe2O3-coated and HCl-treated bauxite ore waste for the adsorption of arsenic (III) from aqueous solution: Isotherm and kinetic models. CHEM ENG COMMUN 2017. [DOI: 10.1080/00986445.2017.1370708] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- G. Venkatesan
- Department of Civil Engineering, University College of Engineering (BIT Campus), Anna University, Tiruchirappalli, India
| | - S. Lakshmi Narayanan
- Department of Civil Engineering, University College of Engineering (BIT Campus), Anna University, Tiruchirappalli, India
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28
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Pourfadakari S, Jorfi S, Ahmadi M, Takdastan A. Experimental data on adsorption of Cr(VI) from aqueous solution using nanosized cellulose fibers obtained from rice husk. Data Brief 2017; 15:887-895. [PMID: 29159226 PMCID: PMC5681337 DOI: 10.1016/j.dib.2017.10.043] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 10/14/2017] [Accepted: 10/18/2017] [Indexed: 12/07/2022] Open
Abstract
The aim of this study was to evaluate the efficiency of nano-sized cellulose obtained from rice husk for Cr(VI) adsorption. The effect of operational parameters including initial pH (3-10), contact time (0-120 min), adsorbent dosage (0.2-1.5 g/L), and initial Cr(VI) concentration (5-50 mg/L) were investigated according to one factor at time method. The results showed, in pH=6, contact time=100 min, adsorbent dose=1.5 g/L and 30 mg/L initial chromium concentration, the adsorption efficiency reached to 92.99%. Also Langmuir isotherm with (R2=0.998 at 303 °K) and pseudo-first-order kinetic model (R2=0.993) were the best models for describing the Cr(VI) adsorption reactions. The negative values of [Formula: see text] and positive value of [Formula: see text] showed that, the Cr(VI) adsorption on NCFs was endothermic and spontaneously process. Therefore, it can be concluded that the application this method is recommended for removing Cr(VI) from aqueous solutions.
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Affiliation(s)
- Sudabeh Pourfadakari
- Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Sahand Jorfi
- Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mehdi Ahmadi
- Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Afshin Takdastan
- Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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29
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Ravi T, Anuradha Jabasingh S. Preparation and characterization of higher degree-deacetylated chitosan-coated magnetic adsorbent for the removal of chromium(VI) from its aqueous mixture. J Appl Polym Sci 2017. [DOI: 10.1002/app.45878] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- T. Ravi
- Department of Chemical Engineering, School of Bio and Chemical Engineering; Sathyabama University; Chennai 600119 Tamil Nadu India
| | - S. Anuradha Jabasingh
- Process Engineering Division, School of Chemical and Bio Engineering; Addis Ababa Institute of Technology, Addis Ababa University; Addis Ababa Ethiopia
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30
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Cao E, Duan W, Yi L, Wang A, Zheng Y. Poly( m -phenylenediamine) functionalized Calotropis gigantea fiber for coupled adsorption reduction for Cr(VI). J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.05.087] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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32
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Ahmadi M, Kouhgardi E, Ramavandi B. Physico-chemical study of dew melon peel biochar for chromium attenuation from simulated and actual wastewaters. KOREAN J CHEM ENG 2016. [DOI: 10.1007/s11814-016-0135-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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33
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Ren H, Gao Z, Wu D, Jiang J, Sun Y, Luo C. Efficient Pb(II) removal using sodium alginate–carboxymethyl cellulose gel beads: Preparation, characterization, and adsorption mechanism. Carbohydr Polym 2016; 137:402-409. [DOI: 10.1016/j.carbpol.2015.11.002] [Citation(s) in RCA: 220] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 11/01/2015] [Accepted: 11/02/2015] [Indexed: 11/28/2022]
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34
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Zheng L, Meng P. Preparation, characterization of corn stalk xanthates and its feasibility for Cd (II) removal from aqueous solution. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.06.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Characterization and Properties of Activated Carbon Prepared from Tamarind Seeds by KOH Activation for Fe(III) Adsorption from Aqueous Solution. ScientificWorldJournal 2015; 2015:415961. [PMID: 26689357 PMCID: PMC4673353 DOI: 10.1155/2015/415961] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Revised: 10/20/2015] [Accepted: 11/09/2015] [Indexed: 11/25/2022] Open
Abstract
This research studies the characterization of activated carbon from tamarind seed with KOH activation. The effects of 0.5 : 1–1.5 : 1 KOH : tamarind seed charcoal ratios and 500–700°C activation temperatures were studied. FTIR, SEM-EDS, XRD, and BET were used to characterize tamarind seed and the activated carbon prepared from them. Proximate analysis, percent yield, iodine number, methylene blue number, and preliminary test of Fe(III) adsorption were also studied. Fe(III) adsorption was carried out by 30 mL column with 5–20 ppm Fe(III) initial concentrations. The percent yield of activated carbon prepared from tamarind seed with KOH activation decreased with increasing activation temperature and impregnation ratios, which were in the range from 54.09 to 82.03 wt%. The surface functional groups of activated carbon are O–H, C=O, C–O, –CO3, C–H, and Si–H. The XRD result showed high crystallinity coming from a potassium compound in the activated carbon. The main elements found in the activated carbon by EDS are C, O, Si, and K. The results of iodine and methylene blue adsorption indicate that the pore size of the activated carbon is mostly in the range of mesopore and macropore. The average BET pore size and BET surface area of activated carbon are 67.9764 Å and 2.7167 m2/g, respectively. Finally, the tamarind seed based activated carbon produced with 500°C activation temperature and 1.0 : 1 KOH : tamarind seed charcoal ratio was used for Fe(III) adsorption test. It was shown that Fe(III) was adsorbed in alkaline conditions and adsorption increased with increasing Fe(III) initial concentration from 5 to 20 ppm with capacity adsorption of 0.0069–0.019 mg/g.
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Srivastava S, Agrawal SB, Mondal MK. A review on progress of heavy metal removal using adsorbents of microbial and plant origin. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:15386-415. [PMID: 26315592 DOI: 10.1007/s11356-015-5278-9] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 08/19/2015] [Indexed: 05/15/2023]
Abstract
Heavy metals released into the water bodies and on land surfaces by industries are highly toxic and carcinogenic in nature. These heavy metals create serious threats to all the flora and fauna due to their bioaccumulatory and biomagnifying nature at various levels of food chain. Existing conventional technologies for heavy metal removal are witnessing a downfall due to high operational cost and generation of huge quantity of chemical sludge. Adsorption by various adsorbents appears to be a potential alternative of conventional technologies. Its low cost, high efficiency, and possibility of adsorbent regeneration for reuse and recovery of metal ions for various purposes have allured the scientists to work on this technique. The present review compiles the exhaustive information available on the utilization of bacteria, algae, fungi, endophytes, aquatic plants, and agrowastes as source of adsorbent in adsorption process for removal of heavy metals from aquatic medium. During the last few years, a lot of work has been conducted on development of adsorbents after modification with various chemical and physical techniques. Adsorption of heavy metal ions is a complex process affected by operating conditions. As evident from the literature, Langmuir and Freundlich are the most widely used isotherm models, while pseudo first and second order are popularly studied kinetic models. Further, more researches are required in continuous column system and its practical application in wastewater treatment.
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Affiliation(s)
- Shalini Srivastava
- Department of Botany, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - S B Agrawal
- Department of Botany, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - M K Mondal
- Department of Chemical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India.
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Rangabhashiyam S, Selvaraju N. Efficacy of unmodified and chemically modified Swietenia mahagoni shells for the removal of hexavalent chromium from simulated wastewater. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.06.033] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Rangabhashiyam S, Selvaraju N. Adsorptive remediation of hexavalent chromium from synthetic wastewater by a natural and ZnCl2 activated Sterculia guttata shell. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.03.018] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Du Y, Wang L, Wang J, Zheng G, Wu J, Dai H. Flower-, wire-, and sheet-like MnO2-deposited diatomites: Highly efficient absorbents for the removal of Cr(VI). J Environ Sci (China) 2015; 29:71-81. [PMID: 25766015 DOI: 10.1016/j.jes.2014.06.047] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 06/04/2014] [Accepted: 06/13/2014] [Indexed: 05/24/2023]
Abstract
Flower-, wire-, and sheet-like MnO2-deposited diatomites have been prepared using a hydrothermal method with Mn(Ac)2, KMnO4 and/or MnSO4 as Mn source and diatomite as support. Physical properties of the materials were characterized by means of numerous analytical techniques, and their behaviors in the adsorption of chromium(VI) were evaluated. It is shown that the MnO2-deposited diatomite samples with different morphologies possessed high surface areas and abundant surface hydroxyl groups (especially the wire-like MnO2/diatomite sample). The wire-like MnO2/diatomite sample showed the best performance in the removal of Cr(VI), giving the maximum Cr(VI) adsorption capacity of 101 mg/g.
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Affiliation(s)
- Yucheng Du
- Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China.
| | - Liping Wang
- Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Jinshu Wang
- Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China.
| | - Guangwei Zheng
- Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Junshu Wu
- Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Hongxing Dai
- Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China.
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Utilization of diatomite/chitosan–Fe (III) composite for the removal of anionic azo dyes from wastewater: Equilibrium, kinetics and thermodynamics. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.12.015] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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41
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Rangabhashiyam S, Selvaraju N. Evaluation of the biosorption potential of a novel Caryota urens inflorescence waste biomass for the removal of hexavalent chromium from aqueous solutions. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2014.09.034] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Maheshwari U, Gupta S. Removal of Cr(VI) from Wastewater Using a Natural Nanoporous Adsorbent: Experimental, Kinetic and Optimization Studies. ADSORPT SCI TECHNOL 2015. [DOI: 10.1260/0263-6174.33.1.71] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- Utkarsh Maheshwari
- Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Suresh Gupta
- Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
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Synthesis and use of alumina nanoparticles as an adsorbent for the removal of Zn(II) and CBG dye from wastewater. INTERNATIONAL JOURNAL OF INDUSTRIAL CHEMISTRY 2014. [DOI: 10.1007/s40090-014-0029-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Niu X, Zheng L, Zhou J, Dang Z, Li Z. Synthesis of an adsorbent from sugarcane bagass by graft copolymerization and its utilization to remove Cd (II) ions from aqueous solution. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.06.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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45
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Competitive sorption of Cu(II) and Ni(II) ions from aqueous solutions: Kinetics, thermodynamics and desorption studies. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.02.022] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Omorogie MO, Babalola JO, Unuabonah EI, Gong JR. Hybrid materials from agro-waste and nanoparticles: implications on the kinetics of the adsorption of inorganic pollutants. ENVIRONMENTAL TECHNOLOGY 2014; 35:611-619. [PMID: 24645440 DOI: 10.1080/09593330.2013.839747] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This study is a first-hand report of the immobilization of Nauclea diderrichii seed waste biomass (ND) (an agro-waste) with eco-friendly mesoporous silica (MS) and graphene oxide-MS (GO + MS) nanoparticles, producing two new hybrid materials namely: MND adsorbent for agro-waste modified with MS and GND adsorbent for agro-waste modified with GO + MS nanoparticles showed improved surface area, pore size and pore volume over those of the agro-waste. The abstractive potential of the new hybrid materials was explored for uptake of Cr(III) and Pb(II) ions. Analysis of experimental data from these new hybrid materials showed increased initial sorption rate of Cr(III) and Pb(II) ions uptake. The amounts of Cr(III) and Pb(II) ions adsorbed by MND and GND adsorbents were greater than those of ND. Modification of N. diderrichii seed waste significantly improved its rate of adsorption and diffusion coefficient for Cr(III) and Pb(II) more than its adsorption capacity. The rate of adsorption of the heavy metal ions was higher with GO + MS nanoparticles than for other adsorbents. Kinetic data were found to fit well the pseudo-second-order and the diffusion-chemisorption kinetic models suggesting that the adsorption of Cr(III) and Pb(II) onto these adsorbents is mainly through chemisorption mechanism. Analysis of kinetic data with the homogeneous particle diffusion kinetic model suggests that particle diffusion (diffusion of ions through the adsorbent) is the rate-limiting step for the adsorption process.
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Krishna D, Sree RP. Artificial Neural Network and Response Surface Methodology Approach for Modeling and Optimization of Chromium (VI) Adsorption from Waste Water using Ragi Husk Powder. INDIAN CHEMICAL ENGINEER 2013. [DOI: 10.1080/00194506.2013.829257] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Metin AÜ, Çiftçi H, Alver E. Efficient Removal of Acidic Dye Using Low-Cost Biocomposite Beads. Ind Eng Chem Res 2013. [DOI: 10.1021/ie400480s] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ayşegül Ü. Metin
- Department
of Chemistry, Faculty of Arts and Sciences, Kırıkkale University, 71450 Yahşihan, Kırıkkale,
Turkey
| | - Hakan Çiftçi
- Department of Chemistry
and Chemical Processing Technologies, Kırıkkale Vocational
High School, Kırıkkale University, 71450 Yahşihan, Kırıkkale, Turkey
| | - Erol Alver
- Department of Chemical Engineering,
Faculty of Engineering, Hitit University, 19030, Çorum, Turkey
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49
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Metin AÜ. Immobilization of laccase onto polyethyleneimine grafted chitosan films: Effect of system parameters. Macromol Res 2013. [DOI: 10.1007/s13233-013-1146-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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50
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Varga M, Takács M, Záray G, Varga I. Comparative study of sorption kinetics and equilibrium of chromium (VI) on charcoals prepared from different low-cost materials. Microchem J 2013. [DOI: 10.1016/j.microc.2012.08.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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