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Momin SC, Pradhan RB, Nath J, Lalmuanzeli R, Kar A, Mehta SK. Metal sequestration by Microcystis extracellular polymers: a promising path to greener water treatment. Environ Sci Pollut Res Int 2024; 31:11192-11213. [PMID: 38217816 DOI: 10.1007/s11356-023-31755-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 12/23/2023] [Indexed: 01/15/2024]
Abstract
The problem of heavy metal pollution in water bodies poses a significant threat to both the environment and human health, as these toxic substances can persist in aquatic ecosystems and accumulate in the food chain. This study investigates the promising potential of using Microcystis aeruginosa extracellular polymeric substances (EPS) as an environmentally friendly, highly efficient solution for capturing copper (Cu2+) and nickel (Ni2+) ions in water treatment, emphasizing their exceptional ability to promote green technology in heavy metal sequestration. We quantified saccharides, proteins, and amino acids in M. aeruginosa biomass and isolated EPS, highlighting their metal-chelating capabilities. Saccharide content was 36.5 mg g-1 in biomass and 21.4 mg g-1 in EPS, emphasizing their metal-binding ability. Proteins and amino acids were also prevalent, particularly in EPS. Scanning electron microscopy (SEM) revealed intricate 3D EPS structures, with pronounced porosity and branching configurations enhancing metal sorption. Elemental composition via energy dispersive X-ray analysis (EDAX) identified essential elements in both biomass and EPS. Fourier transform infrared (FTIR) spectroscopy unveiled molecular changes after metal treatment, indicating various binding mechanisms, including oxygen atom coordination, π-electron interactions, and electrostatic forces. Kinetic studies showed EPS expedited and enhanced Cu2+ and Ni2+ sorption compared to biomass. Thermodynamic analysis confirmed exothermic, spontaneous sorption. Equilibrium biosorption studies displayed strong binding and competitive interactions in binary metal systems. Importantly, EPS exhibited impressive maximum sorption capacities of 44.81 mg g-1 for Ni2+ and 37.06 mg g-1 for Cu2+. These findings underscore the potential of Microcystis EPS as a highly efficient sorbent for heavy metal removal in water treatment, with significant implications for environmental remediation and sustainable water purification.
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Affiliation(s)
- Sengjrang Ch Momin
- Laboratory of Algal Physiology and Biochemistry, Department of Botany, Mizoram University, Aizawl, 796004, India
| | - Ran Bahadur Pradhan
- Laboratory of Algal Physiology and Biochemistry, Department of Botany, Mizoram University, Aizawl, 796004, India
| | - Jyotishma Nath
- Laboratory of Algal Physiology and Biochemistry, Department of Botany, Mizoram University, Aizawl, 796004, India
| | - Ruthi Lalmuanzeli
- Laboratory of Algal Physiology and Biochemistry, Department of Botany, Mizoram University, Aizawl, 796004, India
| | - Agniv Kar
- Laboratory of Algal Physiology and Biochemistry, Department of Botany, Mizoram University, Aizawl, 796004, India
| | - Surya Kant Mehta
- Laboratory of Algal Physiology and Biochemistry, Department of Botany, Mizoram University, Aizawl, 796004, India.
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Zulfiqar N, Shariatipour M, Inam F. Sequestration of chromium(vi) and nickel(ii) heavy metals from unhygienic water via sustainable and innovative magnetic nanotechnology. Nanoscale Adv 2023; 6:287-301. [PMID: 38125608 PMCID: PMC10729917 DOI: 10.1039/d3na00923h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023]
Abstract
In a stride towards sustainable solutions, this research endeavors to address the critical issue of water pollution via heavy metals by coupling the power of magnetic nanotechnology, in combination with a green chemistry approach, to eliminate two noxious inorganic pollutants: chromium(vi) and nickel(ii) from aqueous environments. The synthesis of magnetite (Fe3O4) nanoparticles was achieved using ferric chloride hexahydrate (FeCl3·6H2O) as a precursor, with the assistance of Ziziphus mauritiana Lam. leaves extract, known for its remarkable salt-reducing properties. A range of bio-adsorbents, derived from corncob biomass, corncob pyrolyzed biochar, and magnetite/corncob biochar nanocomposite (NC), were engineered for their eco-friendly and biocompatible characteristics. Extensive parametric optimizations, including variations in pH, contact time, dose rate, and concentration, were carried out to gain insights into the adsorption behavior and capacity of these bioadsorbents concerning Cr(vi) and Ni(ii). Equilibrium and kinetic studies were undertaken to comprehensively understand the adsorption dynamics. In the case of Ni(ii), the Freundlich isotherm model provided a satisfactory fit for all bio-adsorbents, demonstrating R2 values of 0.91, 0.95, and 0.96 for BM, BC, and NC, respectively. Furthermore, the pseudo 1st order model emerged as the most suitable fit for Cr(vi) sequestration in corncob BM with an R2 value of 0.98, while pseudo 2nd order models were robustly fitted for BC and NC, yielding R2 values of 0.88 and 0.99, respectively. The magnetite/corncob nanocomposite outperformed other bioadsorbents in removing heavy metals from wastewater due to its environmental friendliness, larger surface area, reusability, and cost-effectiveness at an industrial scale.
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Affiliation(s)
- Noor Zulfiqar
- Department of Chemistry, Faculty of Science, University of Agriculture Faisalabad Pakistan
| | - Monireh Shariatipour
- Department of Chemistry, Faculty of Science, Tarbiat Modares University Tehran Iran
| | - Fawad Inam
- School of Architecture, Computing and Engineering, University of East London EB 1.102 Docklands Campus, University Way London E16 2RD UK
- Executive Principal Office, Oxford Business College 23-38 Hythe Bridge Street Oxford OX1 2EP UK
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Devi B, Goswami M, Rabha S, Kalita S, Sarma HP, Devi A. Efficacious Sorption Capacities for Pb(II) from Contaminated Water: A Comparative Study Using Biowaste and Its Activated Carbon as Potential Adsorbents. ACS Omega 2023; 8:15141-15151. [PMID: 37151526 PMCID: PMC10157841 DOI: 10.1021/acsomega.3c00142] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 04/11/2023] [Indexed: 05/09/2023]
Abstract
Heavy-metal pollution is a persevering environmental menace, which demands the necessity of its removal by green and ecofriendly adsorbents. To combat this problem, discarded plant biomass can be used as an efficient substitute. Herein, a comparative study has been highlighted for the removal of Pb2+ ions using Euryale ferox Salisbury seed coat and its activated carbon, which is prepared by a first-time-reported activating agent that is a novel and non-hazardous bioresource. The batch investigation revealed a 99.9% removal efficiency of Pb(II) by the activated carbon compared to Euryale ferox Salisbury seed coat, which shows only an 89.5% removal efficiency at neutral pH. The adsorption mechanism is mainly a multilayered process, which involves electrostatic, van der Waals, and hydrogen bonding interactions. The adsorption equilibrium, kinetic, and thermodynamic studies were examined for the biosorbents, which revealed the adsorption process to be feasible, spontaneous, and exothermic with both physisorption and chemisorption adsorption mechanisms. The desorption study asserted the reusability of both the biosorbents to a maximum of three cycles.
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Affiliation(s)
- Bhaswati Devi
- Environmental
Chemistry Laboratory, Resource Management and Environment Section,
Life Science Division, Institute of Advanced
Study in Science and Technology, Guwahati 781035, Assam, India
| | - Manisha Goswami
- Environmental
Chemistry Laboratory, Resource Management and Environment Section,
Life Science Division, Institute of Advanced
Study in Science and Technology, Guwahati 781035, Assam, India
| | - Suprakash Rabha
- Environmental
Chemistry Laboratory, Resource Management and Environment Section,
Life Science Division, Institute of Advanced
Study in Science and Technology, Guwahati 781035, Assam, India
| | - Suravi Kalita
- Environmental
Chemistry Laboratory, Resource Management and Environment Section,
Life Science Division, Institute of Advanced
Study in Science and Technology, Guwahati 781035, Assam, India
- Homi
Bhabha Centre for Science Education, Tata
Institute of Fundamental Research, Mumbai 400088, Maharashtra, India
| | - Hari Prasad Sarma
- Department
of Environmental Science, Gauhati University, Guwahati 781014, Assam, India
| | - Arundhuti Devi
- Environmental
Chemistry Laboratory, Resource Management and Environment Section,
Life Science Division, Institute of Advanced
Study in Science and Technology, Guwahati 781035, Assam, India
- . Fax: +91-361-2273062
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Kushwaha R, Singh RS, Mohan D. Comparative study for sorption of arsenic on peanut shell biochar and modified peanut shell biochar. Bioresour Technol 2023; 375:128831. [PMID: 36878372 DOI: 10.1016/j.biortech.2023.128831] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/28/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
In this study, arsenite [As(III)] and arsenate [As(V)] removal efficiency of peanut shell biochar (PSB) and modified peanut shell biochar (MPSB) was compared in aqueous solutions. The modification was carried out with KMnO4 and KOH. Sorption efficiency of MPSB was relatively higher than PSB at pH 6 for As(III) (86%) and for As(V) (91.26%) for initial concentration of 1 mg/L, adsorbent dose of 0.5 g/L and 240 min equilibrium time at 100 rpm. Freundlich isotherm and pseudo-second order kinetic model suggested possible multilayer chemisorption. Fourier transform infrared spectroscopy showed that -OH, C-C, CC and C-O-C groups contributed significantly in adsorption for both PSB and MPSB. Thermodynamic study showed that the adsorption process was spontaneous and endothermic. Regeneration studies revealed that PSB and MPSB can be successfully used for three cycles. This study established that peanut shell is a low-cost, environment friendly and efficient biochar for removal of arsenic from water.
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Affiliation(s)
- Rohit Kushwaha
- Civil Engineering Department, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Ram Sharan Singh
- Department of Chemical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Devendra Mohan
- Civil Engineering Department, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India.
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John B, Nair KK, Krishnan KA. Synthesis and application of a thiol functionalized clay for borewell water purification: Microchemical characteristics and adsorption studies. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.11.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Zhang R, Richardson JJ, Masters AF, Maschmeyer T. Removal of Pb 2+ from Water Using Sustainable Brown Seaweed Phlorotannins. Langmuir 2022; 38:8324-8333. [PMID: 35758845 DOI: 10.1021/acs.langmuir.2c00849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Bioadsorption is a promising technology to sequester heavy metal ions from water, and brown seaweed has been identified as one of the most appropriate adsorbents as it is abundant, low cost, and efficient at removing various metal ion contaminations. The ability to remove heavy metals from water arises from the high concentration of polysaccharides and phlorotannins in brown seaweed; however, remediation can be hampered by the salinity, location, and coexistence of pollutants in the contaminated water. Maintaining the adsorbent properties of brown seaweed while avoiding the fragility of living organisms could allow for the development of better adsorbents. Herein, we demonstrate that polymerized phlorotannin particles, synthesized from phlorotannins extracted from a species of brown seaweed (Carpophyllum flexuosum), were able to remove 460 mg of Pb2+ from water per gram of adsorbent. Scanning electron microscopy (SEM), attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR), and thermogravimetric analysis (TGA) were used to characterize the polymerization process and the polymerized phlorotannin particles. Importantly, there was no direct correlation between the Pb2+ removal capacity and the phlorotannin content of various algal derivatives of three species of brown seaweed, C. flexuosum, Carpophyllum plumosum, and Ecklonia radiata, as all three had similar adsorption capacities despite differences in phlorotannin content. This work shows that naturally abundant, "green" materials can be used to help remediate the environment.
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Affiliation(s)
- Rui Zhang
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, Zhejiang Province, China
| | - Joseph J Richardson
- Department of Materials Engineering, School of Engineering, University of Tokyo, Tokyo 113-8656, Japan
| | - Anthony F Masters
- Laboratory of Advanced Catalysis for Sustainability, School of Chemistry F11, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Thomas Maschmeyer
- Laboratory of Advanced Catalysis for Sustainability, School of Chemistry F11, The University of Sydney, Sydney, New South Wales 2006, Australia
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Rana A, Sindhu M, Kumar A, Dhaka RK, Chahar M, Singh S, Nain L. Restoration of heavy metal-contaminated soil and water through biosorbents: A review of current understanding and future challenges. Physiol Plant 2021; 173:394-417. [PMID: 33724481 DOI: 10.1111/ppl.13397] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/13/2021] [Accepted: 03/07/2021] [Indexed: 06/12/2023]
Abstract
Heavy metal pollution in soil and water is a potential threat to human health as it renders food quality substandard. Different biosorbents such as microbial and agricultural biomass have been exploited for heavy metal immobilization in soil and sorptive removal in waters. Biosorption is an effective and sustainable method for heavy metal removal in soil and water, but the inherent challenges are to find cheap, selective, robust, and cost-effective bioadsorbents. Microbial and agricultural biomass and their modified forms such as nanocomposites and carbonaceous materials (viz., biochar, nanobiochar, biocarbon), might be useful for sequestration of heavy metals in soil via adsorption, ion exchange, complexation, precipitation, and enzymatic transformation mechanisms. In this review, potential biosorbents and their metal removal capacity in soil and water are discussed. The microbial adsorbents and modified composites of agricultural biomasses show improved performance, stability, reusability, and effectively immobilize heavy metals from soil and water. In the future, researchers may consider the modified composites, encapsulated biosorbents for soil and water remediation.
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Affiliation(s)
- Anuj Rana
- Department of Microbiology (COBS & H), CCS Haryana Agricultural University, Hisar, India
| | - Meena Sindhu
- Department of Microbiology (COBS & H), CCS Haryana Agricultural University, Hisar, India
| | - Ajay Kumar
- Department of Microbiology (COBS & H), CCS Haryana Agricultural University, Hisar, India
| | - Rahul Kumar Dhaka
- Department of Chemistry, Environmental Sciences, and Centre for Bio-Nanotechnology, CCS Haryana Agricultural University, Hisar, India
| | - Madhvi Chahar
- Department of food quality and safety, Institute of Post Harvest, Agricultural Research Organization, The Volcani Research Center, Bet-Dagan, Israel
| | - Surender Singh
- Department of Microbiology, Central University of Haryana, Mahendragarh, India
| | - Lata Nain
- Division of Microbiology, ICAR-Indian Agricultural Research Institute, New Delhi, India
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Batur E, Baytar O, Kutluay S, Horoz S, Şahin Ö. A comprehensive new study on the removal of Pb (II) from aqueous solution by şırnak coal-derived char. Environ Technol 2021; 42:505-520. [PMID: 32804581 DOI: 10.1080/09593330.2020.1811397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 08/10/2020] [Indexed: 06/11/2023]
Abstract
In this study, char was prepared from the Şırnak coal derivative as a new adsorbent by the pyrolysis process and successfully applied for Pb (II) removal. Prepared char adsorbent was characterized by analysis techniques such as thermogravimetric (TG)/differential thermogravimetric (DTG), iodine number, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and Brunauer-Emmett-Teller (BET) surface area. In the experimental design of the Pb (II) removal process, the relationship between operating factors (contact time, initial Pb (II) concentration and temperature) and process responses (adsorption capacity and removal efficiency) was modelled by applying response surface methodology (RSM). After that, the operating factors for the maximum adsorption capacity and removal efficiency of Pb (II) by char were optimized. In the removal of Pb (II), pseudo-first order and pseudo-second order kinetic models were used to determine the process mechanism. In addition, adsorption isotherm models such as Langmuir, Freundlich, and Dubinin-Radushkevich were applied to the equilibrium data to explain the adsorption mechanism between the adsorbent and adsorbate molecules. According to the results obtained, it was determined that kinetic and equilibrium isotherm data were better defined with pseudo-second order kinetic and Dubinin-Radushkevich isotherm models, respectively. The optimum values of the contact time, initial Pb (II) concentration, and temperature for maximum adsorption capacity (124.64 mg/g) and removal efficiency (92.35%) of Pb (II) were found as 150.00 min, 144.81 ppm, and 35.06°C, respectively. This study indicated the application potential of Şırnak coal-derived char as a promising cost-effective adsorbent for the removal of heavy metals.
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Affiliation(s)
- Ebru Batur
- Department of Chemical Engineering, Siirt University, Siirt, Turkey
| | - Orhan Baytar
- Department of Chemical Engineering, Siirt University, Siirt, Turkey
| | - Sinan Kutluay
- Department of Chemical Engineering, Siirt University, Siirt, Turkey
| | - Sabit Horoz
- Department of Electrical &Electronics Engineering, Siirt University, Siirt, Turkey
| | - Ömer Şahin
- Department of Chemical Engineering, Siirt University, Siirt, Turkey
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Naseem K, Farooqi ZH, Begum R, Rehman MZU, Shahbaz A, Farooq U, Ali M, Rahman HMAU, Irfan A, Al-Sehemi AG. Removal of Cadmium (II) from Aqueous Medium Using Vigna radiata Leave Biomass: Equilibrium Isotherms, Kinetics and Thermodynamics. Z PHYS CHEM 2018. [DOI: 10.1515/zpch-2018-1223] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In the present study, a novel biosorbent Vigna radiata leaves biomass (L. biomass) was utilized for cadmium (II) extraction from aqueous medium. Cadmium (II) free and cadmium (II) loaded L. biomass was analyzed by Fourier transform infrared (FTIR) spectroscopy. Adsorption of cadmium (II) from aqueous medium was studied under various conditions such as adsorbent dose, agitation time, pH and temperature of the medium to optimize the process variables. Different models including Langmuir, Freundlich, Temkin and Dubinin–Radushkevich (DR) were used to elaborate the insight of adsorption process. Best interpretation of biosorption process was given by Langmuir model. Value of maximum adsorption capacity (qm) calculated from Langmuir isotherm model was found to be 13.44 mg/g. Results indicated the establishment of physical interaction between cadmium (II) ions and functional groups of L. biomass. Kinetic study for adsorption of cadmium (II) ions on L. biomass was done by applying pseudo first order, pseudo second order, elovich and intra-particles diffusion models. Biosorption process best followed the pseudo second order kinetics. Value of standard Gibbs energy (ΔG°) and standard enthalpy change (ΔH°) showed the feasibility, spontaneity and endothermic nature of adsorption process. Percentage removal efficiency of L. biomass for cadmium (II) was successfully maintained for four cycles. Biomass has a potential to be used as an efficient adsorbent for the removal of cadmium (II) from different polluted water samples.
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Affiliation(s)
- Khalida Naseem
- Institute of Chemistry, University of the Punjab, New Campus , Lahore 54590 , Pakistan
| | - Zahoor H. Farooqi
- Institute of Chemistry, University of the Punjab, New Campus , Lahore 54590 , Pakistan , Tel.: +92-42-9230463 (off.) Ext. 817, Fax: 92-42-9231269, e-mail:
| | - Robina Begum
- Center for Undergraduate Studies, University of the Punjab , New Campus, Lahore 54590 , Pakistan
| | - Muhammad Zia Ur Rehman
- Department of Chemical Engineering , University of Engineering and Technology , Lahore 54890 , Pakistan
| | - Aiman Shahbaz
- Department of Chemistry , Kinnaird College for Women , Lahore 54000 , Pakistan
| | - Umar Farooq
- Institute of Chemistry, University of the Punjab, New Campus , Lahore 54590 , Pakistan
| | - Muhammad Ali
- Institute of Agriculture Sciences, University of the Punjab , Lahore 54590 , Pakistan
| | | | - Ahmad Irfan
- Research Center for Advanced Materials Science (RCAMS), King Khalid University , P.O. Box 9004 , Abha 61413 , Saudi Arabia ; Department of Chemistry , Faculty of Science, King Khalid University , P.O. Box 9004 , Abha 61413 , Saudi Arabia
| | - Abdullah G. Al-Sehemi
- Research Center for Advanced Materials Science (RCAMS), King Khalid University , P.O. Box 9004 , Abha 61413 , Saudi Arabia ; Department of Chemistry , Faculty of Science, King Khalid University , P.O. Box 9004 , Abha 61413 , Saudi Arabia
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Li J, Shen F, Yang G, Zhang Y, Deng S, Zhang J, Zeng Y, Luo T, Mei Z. Valorizing Rice Straw and Its Anaerobically Digested Residues for Biochar to Remove Pb(II) from Aqueous Solution. INT J POLYM SCI 2018; 2018:1-11. [DOI: 10.1155/2018/2684962] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
To seek a new path to valorize rice straw (RS) and its anaerobically digested residues (DRS), biochar production at different temperatures for removing Pb(II) from aqueous solution and its basic physicochemical characteristics for elucidating potentially adsorption mechanisms were investigated. Overall, pH, electrical conductivity (EC), ash, specific surface area (SA), micronutrient content, and aromaticity of RS biochars (RSBCs) and DRS biochars (DRSBCs) increased with the promoted pyrolysis temperature, and opposite trends were found on the yield, volatile matter, H, N, and O. Lower pH and K content but higher yield, carbon stability, and N and P content were achieved by DRSBCs. Consequently, DRSBCs exhibited lower Pb(II) removal, which was 0.15–0.35 of RSBCs. Maximum adsorption capacities of 276.3 and 90.5 mg·g−1 were achieved by RSBC and DRSBC, respectively, at 500°C. However, distinct mechanisms dominated Pb(II) removal, in which carbonates and carboxylates were responsible for RSBCs, and phosphate silicate precipitation and complexation with carboxylate groups controlled DRSBCs.
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Almasian A, Najafi F, Maleknia L, Giahi M. Mesoporous MgO/PPG hybrid nanofibers: synthesis, optimization, characterization and heavy metal removal property. NEW J CHEM 2018. [DOI: 10.1039/c7nj03200e] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this research, mesoporous magnesium oxide/poly(propylene glycol) (MgO/PPG) hybrid nanofibers were synthesized as a new adsorbent for the removal of heavy metal ions from solutions.
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Affiliation(s)
- A. Almasian
- Nanotechnology Research Center
- Islamic Azad University
- South Tehran Branch
- Tehran
- Iran
| | - F. Najafi
- Nanotechnology Research Center
- Islamic Azad University
- South Tehran Branch
- Tehran
- Iran
| | - L. Maleknia
- Nanotechnology Research Center
- Islamic Azad University
- South Tehran Branch
- Tehran
- Iran
| | - M. Giahi
- Nanotechnology Research Center
- Islamic Azad University
- South Tehran Branch
- Tehran
- Iran
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Zhang X, Hao Y, Wang X, Chen Z. Adsorption of iron(III), cobalt(II), and nickel(II) on activated carbon derived from Xanthoceras Sorbifolia Bunge hull: mechanisms, kinetics and influencing parameters. Water Sci Technol 2017; 75:1849-1861. [PMID: 28452777 DOI: 10.2166/wst.2017.067] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Xanthoceras Sorbifolia Bunge hull activated carbon (XSA) was prepared and characterized by Brunauer-Emmett-Teller analysis, scanning electron microscopy and energy dispersive X-ray (EDX) spectroscopy. The ability of XSA as an adsorbent was investigated for the removal of the iron group ions Fe(III), Co(II), and Ni(II) from aqueous solution. Optimum adsorption parameters were determined based on the initial concentrations of the iron group ions, pH, adsorption temperature, and adsorption time in adsorption studies. The maximum monolayer adsorption capacities were 241.13 mg/g for Fe(III), 126.05 mg/g for Co(II), and 187.96 mg/g for Ni(II), respectively. Adsorption kinetics and isotherms showed that the adsorption process best fitted the nonlinear pseudo-second-order and Langmuir models, and the affinity of the ions for XSA decreased as follows: Fe(III) > Ni(II) > Co(II). Regeneration studies indicated that XSA could be used after several consecutive adsorption/desorption cycles using HNO3. Fourier transform infrared and EDX spectra revealed the chemical adsorption value of XSA as an adsorbent for removing iron group ions from aqueous solutions.
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Affiliation(s)
- Xiaotao Zhang
- College of Science, Inner Mongolia Agricultural University, Hohhot 010018, China; College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, China E-mail:
| | - Yinan Hao
- College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, China E-mail:
| | - Ximing Wang
- College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, China E-mail:
| | - Zhangjing Chen
- Department of Sustainable Biomaterials, Virginia Tech University, Blacksburg, VA 24061, USA
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Zhang Q, Lin B, Hong J, Chang CT. Removal of ammonium and heavy metals by cost-effective zeolite synthesized from waste quartz sand and calcium fluoride sludge. Water Sci Technol 2017; 75:587-597. [PMID: 28192353 DOI: 10.2166/wst.2016.508] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This study focuses on the effectiveness of zeolite (10% CF-Z [0.5]) hydrothermally synthesized from waste quartz sand and calcium fluoride (CF) for ammonium ion and heavy metal removal. Zeolite was characterized through powder X-ray diffraction, Fourier-transform infrared spectroscopy, micromeritics N2 adsorption/desorption analysis, and field emission scanning electron microscopy. The effects of CF addition, Si/Al ratio, initial ammonium concentration, solution pH, and temperature on the adsorption of ammonium on 10% CF-Z (0.5) were further examined. Results showed that 10% CF-Z (0.5) was a single-phase zeolite A with cubic-shaped crystals and 10% CF-Z (0.5) efficiently adsorbs ammonium and heavy metals. For instance, 91% ammonium (10 mg L-1) and 93% lead (10 mg L-1) are removed. The adsorption isotherm, kinetics, and thermodynamics of ammonium adsorption on 10% CF-Z (0.5) were also theoretically analyzed. The adsorption isotherm of ammonium and lead on 10% CF-Z (0.5) in single systems indicated that Freundlich model provides the best fit for the equilibrium data, whereas pseudo-second-order model best describes the adsorption kinetics. The adsorption degree of ions on 10% CF-Z (0.5) in mixed systems exhibits the following pattern: lead > ammonium > cadmium > chromium.
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Affiliation(s)
- Qian Zhang
- College of Chemical Engineering, Huaqiao University, Xiamen, China E-mail:
| | - Bing Lin
- College of Chemical Engineering, Huaqiao University, Xiamen, China E-mail:
| | - Junming Hong
- College of Chemical Engineering, Huaqiao University, Xiamen, China E-mail:
| | - Chang-Tang Chang
- Department of Environmental Engineering, National I-Lan University, Ilan, Taiwan
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Yi Y, Lv J, Liu Y, Wu G. Synthesis and application of modified Litchi peel for removal of hexavalent chromium from aqueous solutions. J Mol Liq 2017; 225:28-33. [DOI: 10.1016/j.molliq.2016.10.140] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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