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Ou JH, Wang CC, Verpoort F, Chien CC, Zhong HB, Kao CM. Development of innovative and green adsorbents for in situ cleanup of fluoride-polluted groundwater: Mechanisms and field-scale studies. CHEMOSPHERE 2024; 350:141035. [PMID: 38160954 DOI: 10.1016/j.chemosphere.2023.141035] [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: 06/22/2023] [Revised: 10/20/2023] [Accepted: 12/23/2023] [Indexed: 01/03/2024]
Abstract
In this study, the magnesium oxide (MgO)-based adsorbents [granulated MgO aggregates (GA-MgO) and surface-modified MgO powder (SM-MgO)] were developed to remediate a fluoride-contaminated groundwater site. Both GA-MgO and SM-MgO had porous, spherical, and crystalline structures. Diameters for GA-MgO and SM-MgO were 1-1.7 mm and 1-10 μm, respectively. The pseudo second-order dynamic adsorption and the Freundlich isotherm could be applied to express the chemical adsorption phenomena. The monolayer adsorption was the dominant mechanism at the initial adsorption period. During the latter part of fluoride adsorption, the multilayer adsorption became the dominant mechanism for fluoride removal from the water phase, which also resulted in the increased adsorption capacity. Higher hydroxide, phosphate, and carbonate concentrations caused a decreased fluoride removal efficiency due to the competition of sorption sites between fluoride and other anions with similar electronic properties. Fluoride removal mechanism using GA-MgO and SM-MgO as the adsorbents was mainly carried out by the chemical adsorption. Reaction paths contained two main processes: (1) formation of magnesium hydroxide after the reaction of MgO with water, and (2) the hydroxyl group of the magnesium hydroxide was replaced by fluoride ions to form magnesium fluoride precipitation. Results from column tests show that up to 61 and 73% of fluoride removal (initial fluoride concentration = 9.3 mg/L) could be obtained after 50 pore volumes of groundwater pumping with GA-MgO and SM-MgO injection, respectively. The GA-MgO system could be applied to contain and remediate fluoride-contaminated groundwater, and SM-MgO could be applied as an immediate fluoride removal alternative to achieve a rapid pollutant removal for emergency responses. Up to 71% of fluoride removal (fluoride concentration = 10.8 mg/L) could be obtained with GA-MgO injection after 30 days of operation. The developed GA-MgO system is a potential and green remediation alternative to contain the fluoride plume significantly.
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Affiliation(s)
- Jiun-Hau Ou
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Chih-Chieh Wang
- Hershey Environmental Technology Corp., Ltd., Kaohsiung, Taiwan
| | - Francis Verpoort
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, PR China
| | - Chih-Ching Chien
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Chung-Li City, Taoyuan, Taiwan
| | - Hua-Bin Zhong
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan.
| | - Chih-Ming Kao
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan.
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Taye A, Yifru A, Getachew N, Mehretie S, Admassie S. Adsorption of hexavalent chromium using Water Hyacinth Leaf Protein Concentrate/Graphene Oxide hydrogel. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1342. [PMID: 37857926 DOI: 10.1007/s10661-023-11960-w] [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: 05/08/2023] [Accepted: 10/05/2023] [Indexed: 10/21/2023]
Abstract
Water Hyacinth Leaf Protein Concentrate/Graphene Oxide (WHLPC/GO) hydrogel was synthesized for the removal of Cr(VI) from wastewater. About 90% of the prepared hydrogel constitutes WHLPC. The prepared material was characterized by FT-IR and XRD. The process variables such as pH, contact time, adsorbent dosage, initial Cr(VI) concentration, and temperature were optimized using a batch mode experiment. Kinetic studies were also conducted and it was observed that the chemosorptive pseudo-second-order best described the adsorption system with a correlation coefficient (R2) of 0.984. The highest adsorption capacity of 322.00 mg/g was achieved at pH 1.0, and equilibrium was achieved within 420 min. Various isotherm models were analyzed using non-linear fitting. It was found that the Sips model provides the best fit, indicating heterogeneous and uniform active site surface adsorption of Cr(VI) on the WHLPC/GO. The reuse efficiency of the synthesized material was also found to be greater than 84% for five consecutive cycles. Thermodynamic studies were conducted and results revealed that the adsorption was spontaneous and endothermic.
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Affiliation(s)
- Asmamaw Taye
- Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia.
| | - Alemayehu Yifru
- Department of Chemistry, College of Natural Science, Jimma University, P.O. Box 378, Jimma, Ethiopia
| | - Negash Getachew
- Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
| | - Solomon Mehretie
- Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
| | - Shimelis Admassie
- Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
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Nguyen NTT, Nguyen LM, Nguyen TTT, Tran UPN, Nguyen DTC, Tran TV. A critical review on the bio-mediated green synthesis and multiple applications of magnesium oxide nanoparticles. CHEMOSPHERE 2023; 312:137301. [PMID: 36410506 DOI: 10.1016/j.chemosphere.2022.137301] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 09/05/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
Nowadays, advancements in nanotechnology have efficiently solved many global problems, such as environmental pollution, climate change, and infectious diseases. Nano-scaled materials have played a central role in this evolution. Chemical synthesis of nanomaterials, however, required hazardous chemicals, unsafe, eco-unfriendly, and cost-ineffective, calling for green synthesis methods. Here, we review the green synthesis of MgO nanoparticles and their applications in biochemical, environmental remediation, catalysis, and energy production. Green MgO nanoparticles can be safely produced using biomolecules extracted from plants, fungus, bacteria, algae, and lichens. They exhibited fascinating and unique properties in morphology, surface area, particle size, and stabilization. Green MgO nanoparticles served as excellent antimicrobial agents, adsorbents, colorimetric sensors, and had enormous potential in biomedical therapies against cancers, oxidants, diseases, and the sensing detection of dopamine. In addition, green MgO nanoparticles are of great interests in plant pathogens, phytoremediation, plant cell and organ culture, and seed germination in the agricultural sector. This review also highlighted recent advances in using green MgO nanoparticles as nanocatalysts, nano-fertilizers, and nano-pesticides. Thanks to many emerging applications, green MgO nanoparticles can become a promising platform for future studies.
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Affiliation(s)
- Ngoan Thi Thao Nguyen
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam; Department of Chemical Engineering and Processing, Nong Lam University, Thu Duc District, Ho Chi Minh City, 700000, Viet Nam
| | - Luan Minh Nguyen
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam; Department of Chemical Engineering and Processing, Nong Lam University, Thu Duc District, Ho Chi Minh City, 700000, Viet Nam
| | - Thuy Thi Thanh Nguyen
- Department of Chemical Engineering and Processing, Nong Lam University, Thu Duc District, Ho Chi Minh City, 700000, Viet Nam; Faculty of Science, Nong Lam University, Thu Duc District, Ho Chi Minh City, 700000, Viet Nam
| | - Uyen P N Tran
- Faculty of Engineering and Technology, Van Hien University, Ho Chi Minh City, Viet Nam
| | - Duyen Thi Cam Nguyen
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam; NTT Hi-Tech Institute, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam.
| | - Thuan Van Tran
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam; NTT Hi-Tech Institute, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam.
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Sahoo A, Satapathy KB, Sahoo SK, Panigrahi GK. Microbased biorefinery for gold nanoparticle production: recent advancements, applications and future aspects. Prep Biochem Biotechnol 2022:1-12. [PMID: 36137172 DOI: 10.1080/10826068.2022.2122065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Multifaceted utility of nanomaterials is indispensable to meet the environmental challenges across the globe. Nanomaterials substantially contribute in delineating the rapidly advancing field of nanotechnology. Recently, primary emphasis has been laid down on augmenting the biological methodologies for the synthesis of nanomaterials. In this aspect, green nanotechnology has revolutionized the entire process of nanosynthesis. Essentially biofabrication of nanoparticles have long-range applications, primarily in the field of medical applications such as drug delivery, cancer diagnostics and genetic engineering processes. Biocompatible and stable nanoparticles synthesized from biological source can be an effective approach against the chemically synthesized owing to their non-expensive and eco-friendly attributes. Biological systems including bacteria, yeasts, fungi and plants have already been exploited in the field of nanotechnology. Use of fungi seems to be a very effective and economical approach for the synthesis of gold nanoparticles. Gold nanoparticles possess anti-oxidation activity, are highly stable and biocompatible in nature. Fungi-mediated nanoparticle biosynthesis is more advantageous as compared to bacterial synthesis. Fungi secrete large amounts of enzymes, whereas the enzyme secretion of yeasts is weak. Here, we have reported the recent advancements and future implications in the field of gold nanoparticle production and applications.
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Affiliation(s)
- Annapurna Sahoo
- School of Applied Sciences, Centurion University of Technology and Management, Bhubaneswar, India
| | - Kunja Bihari Satapathy
- School of Applied Sciences, Centurion University of Technology and Management, Bhubaneswar, India
| | - Shraban Kumar Sahoo
- School of Applied Sciences, Centurion University of Technology and Management, Bhubaneswar, India
| | - Gagan Kumar Panigrahi
- School of Applied Sciences, Centurion University of Technology and Management, Bhubaneswar, India
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Sahoo SK, Panigrahi GK, Dhal JP, Sahoo JK, Behera AK, Panda PC, Patel P, Mund SK, Muduli SM, Panda L. Co-axial electrospun hollow MgO nanofibers for efficient removal of fluoride ions from water. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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