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Shi K, Xu Z, Wang Y, Fu W, Chen B. Study on regeneration characteristics of granular activated carbon using ultrasonic and thermal methods. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:26580-26591. [PMID: 38451460 DOI: 10.1007/s11356-024-32734-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/27/2024] [Indexed: 03/08/2024]
Abstract
Dye wastewater is a type of high-concentration, high chromaticity, and high salinity organic wastewater, which is generally treated with activated carbon adsorbent. The effective regeneration of granular activated carbon (GAC) is the key to reducing the operating cost of GAC in the wastewater treatment process. The regeneration characteristics of saturated GAC adsorbed on 288 orange dye wastewater were studied by using the ultrasonic coupled thermal regeneration method. The results showed that the regeneration efficiency of GAC adsorbed on 288 orange dye wastewater increased with the increase of ultrasound power. The optimal ultrasound frequency and regeneration temperature were determined to be 45 kHz and 60 ℃, and the relationship between regeneration times and carbon loss rate was explored. The combination of ultrasound and high-temperature heating methods has successfully improved the regeneration efficiency of GAC and significantly reduced the high-temperature thermal regeneration time of GAC, thereby reducing the mass loss rate of GAC. The performance changes of fresh activated carbon (FAC), saturated activated carbon (SAC), ultrasonic regeneration of activated carbon (UAC), and thermal regeneration of activated carbon (TAC) during the combined regeneration process were explored by characterizing the regenerated GAC. Infrared characterization showed that the C-O group of GAC was significantly weakened after coupling treatment, indicating that ultrasonic treatment can significantly enhance the desorption effect of thermal regeneration. The microjet, shock wave, and cavitation effects generated by ultrasonic treatment restore the specific surface area of GAC, mainly increasing the micropore volume and pore size of GAC, and enhancing the treatment effect of thermal regeneration.
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Affiliation(s)
- Kaizheng Shi
- Zhejiang University of Technology College of Mechanical Engineering, Hangzhou, China
| | - Zhang Xu
- Zhejiang University of Technology College of Mechanical Engineering, Hangzhou, China.
| | - Yong Wang
- Zhejiang Dibang Chemical Company Limited, Shaoxing, 312369, China
| | - Weisong Fu
- Zhejiang Dibang Chemical Company Limited, Shaoxing, 312369, China
| | - Bo Chen
- Zhejiang Dibang Chemical Company Limited, Shaoxing, 312369, China
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Chetima A, Nde Bup D, Kewir F, Wahaboua A. Activated carbons from open air and microwave-assisted impregnation of cotton and neem husks efficiently decolorize neutral cotton oil. Heliyon 2024; 10:e24060. [PMID: 38283249 PMCID: PMC10818195 DOI: 10.1016/j.heliyon.2024.e24060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 12/06/2023] [Accepted: 01/03/2024] [Indexed: 01/30/2024] Open
Abstract
The decolorization of cottonseed oil with activated carbons (ACs) from neem and cotton husks has a dual interest: elimination of undesirable pigments in oil and valorization of the husks; by-products of neem and cottonseed processing, which would otherwise be dumped along riverbanks and farms causing environmental pollution. ACs were produced from neem and cottonseed husks after acid impregnation assisted by microwave heating and in ambient air for the decolorization of neutral cottonseed oil. The experimental data were analyzed by the intraparticle diffusion and the pseudo-second-order kinetic models as well as the Langmuir and Freundlich isotherm models. The method of impregnation and carbonization time had dramatic effects on the specific surface area (800-1500 g/m2), the quantity of burn-off (50-70 %), and methylene blue index (300-5000 mg/g) values which indicated the potential of the prepared activated carbons in the bleaching of vegetable oil and in other applications such as environmental clean-up and in agriculture. Pigment adsorption increased with temperature for all ACs indicating that the decolorization process was endothermic. The quantity of adsorbent equally had a significant effect on the pigment adsorption process for all ACs. All the activated carbons prepared in this work were 30-80 % more efficient in pigment adsorption than bleaching earth that is normally used in decolorizing neutral cotton seed oil in industries. All tested models are adequate to describe pigment adsorption by the ACs. Both methods of preparation of ACs were effective for oil decolorization, but microwave impregnation is more appealing because it requires only 1 h compared to 6 h for ambient air. Optimum decolorization conditions were 90 °C for 40min and adsorbent concentration of 2 %.
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Affiliation(s)
- Abba Chetima
- Department of Inorganic Chemistry, Faculty of Science, University of Maroua, Cameroon
| | - Divine Nde Bup
- Department of Nutrition Food and Bio-resource Technology, College of Technology, University of Bamenda, Cameroon
| | - Fannyuy Kewir
- Department of Nutrition Food and Bio-resource Technology, College of Technology, University of Bamenda, Cameroon
| | - Abdoul Wahaboua
- Department of Inorganic Chemistry, Faculty of Science, University of Maroua, Cameroon
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Chen X, Tian Z, Yang Q, Zhang L, Yang Q, Chen L, Lu Z. Cost-Effective H 2 O 2 -Regeneration of Powdered Activated Carbon by Isolated Fe Sites. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2204079. [PMID: 36399640 PMCID: PMC9839841 DOI: 10.1002/advs.202204079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/14/2022] [Indexed: 06/16/2023]
Abstract
The reuse of powdered activated carbon (PAC) vitally determines the economics and security of the PAC-based adsorption process, while state-of-the-art PAC regeneration technologies are usually unsatisfactory. Here, it is demonstrated that isolated Fe sites anchored on commercial PAC enable fast H2 O2 activation to produce Fe-based reactive oxygen species for highly efficient PAC regeneration at room temperature. Taking rhodamine B as a representative pollutant, PAC decorated with isolated Fe sites realize H2 O2 based regeneration with negligible adsorption capacity degradation for 10 cycles. Moreover, in terms of the PAC loss rate, this technology is greatly superior to traditional Fenton-based regeneration technology. Further operando experiments and theoretical calculations reveal that the high regeneration performance can be attributed to the isolated HOFeO motifs, which activate H2 O2 via a nonradical reaction pathway. These findings provide a very promising strategy toward reducing the cost of H2 O2 -based PAC regeneration technology.
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Affiliation(s)
- Xu Chen
- Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang ProvinceQianwan Institute of CNITECHNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboZhejiang315201P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Ziqi Tian
- Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang ProvinceQianwan Institute of CNITECHNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboZhejiang315201P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Qihao Yang
- Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang ProvinceQianwan Institute of CNITECHNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboZhejiang315201P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Linjuan Zhang
- Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang ProvinceQianwan Institute of CNITECHNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboZhejiang315201P. R. China
- Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai201800P. R. China
| | - Qiu Yang
- Ningbo New Material Testing and Evaluation Center Co., LtdNingbo New Materials Innovation CenterNingboZhejiang315201P. R. China
| | - Liang Chen
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Zhiyi Lu
- Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang ProvinceQianwan Institute of CNITECHNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboZhejiang315201P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
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Sanz-Santos E, Álvarez-Torrellas S, Larriba M, Calleja-Cascajero D, García J. Enhanced removal of neonicotinoid pesticides present in the Decision 2018/840/EU by new sewage sludge-based carbon materials. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 313:115020. [PMID: 35398643 DOI: 10.1016/j.jenvman.2022.115020] [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: 10/21/2021] [Revised: 03/03/2022] [Accepted: 04/03/2022] [Indexed: 06/14/2023]
Abstract
Due to the increasingly strict legislation about the disposal of sewage sludge, it is necessary to find sustainable solutions to manage this waste at low-cost conditions. In addition, priority contaminants are now attracting much attention since they are usually detected in WWTP effluents. In this work, five sludge have been used as precursors for the synthesis of activated carbons subsequently tested in the removal by adsorption of three neonicotinoid pesticides listed in the EU Watch List: acetamiprid (ACT), thiamethoxam (THM), and imidacloprid (IMD). Generally, the activated carbons were prepared by chemical activation using ZnCl2 as an activating agent and then the resulting materials were pyrolyzed at 800 °C for 2 h. The synthesized activated carbons showed different textural properties; thus, the best adsorption results were found for AC-Industrial activated carbon, obtained from an industrial origin sewage sludge, with high equilibrium adsorption capacities (qe = 104.2, 137.0, and 119.9 mg g-1), for ACT, THM, and IMD, respectively. Furthermore, it was elucidated that the use of CO2 in the synthesis generated an opening, followed by widening, of the narrowest microporosity, increasing the specific surface area of the carbon materials. The kinetic and isotherm adsorption experimental data were obtained for each of the pesticide-activated carbon systems; thus, the kinetic curves were well-fitted to the pseudo-second-order kinetic model, as well as, Freundlich and Guggenheim-Anderson-de Boer (GAB) empirical models were used for the fitting of the equilibrium adsorption isotherms, finding that GAB model best fitted the experimental data. Additionally, the regeneration of the activated carbons using methanol as a regenerating agent and the single and simultaneous adsorption of a hospital wastewater effluent, fortified with the three studied pesticides have been explored.
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Affiliation(s)
- Eva Sanz-Santos
- Catalysis and Separation Processes Group, Chemical Engineering and Materials Department, Faculty of Chemistry, Complutense University, Avda. Complutense S/n, 28040, Madrid, Spain
| | - Silvia Álvarez-Torrellas
- Catalysis and Separation Processes Group, Chemical Engineering and Materials Department, Faculty of Chemistry, Complutense University, Avda. Complutense S/n, 28040, Madrid, Spain.
| | - Marcos Larriba
- Catalysis and Separation Processes Group, Chemical Engineering and Materials Department, Faculty of Chemistry, Complutense University, Avda. Complutense S/n, 28040, Madrid, Spain
| | - David Calleja-Cascajero
- Catalysis and Separation Processes Group, Chemical Engineering and Materials Department, Faculty of Chemistry, Complutense University, Avda. Complutense S/n, 28040, Madrid, Spain
| | - Juan García
- Catalysis and Separation Processes Group, Chemical Engineering and Materials Department, Faculty of Chemistry, Complutense University, Avda. Complutense S/n, 28040, Madrid, Spain
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Abstract
The thermal catalytic conversion of biomass is currently a prevalent method for producing activated carbon with superb textural properties and excellent adsorption performance. However, activated carbon suffers severely from its poor thermal stability, which can easily result in spontaneous burning. In contrast, silica material is famed for its easy accessibility, high specific surface area, and remarkable thermal stability; however, its broader applications are restricted by its strong hydrophilicity. Based on this, the present review summarizes the recent progress made in carbon-silica composite materials, including the various preparation methods using diverse carbon (including biomass resources) and silica precursors, their corresponding structure–function relationship, and their applications in adsorption, insulation, batteries, and sensors. Through their combination, the drawbacks of the individual materials are circumvented while their original advantages are maintained. Finally, several bottlenecks existing in the field of carbon-silica composites, from synthesis to applications, are discussed in this paper, and possible solutions are given accordingly.
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Purge gas humidity improves microwave-assisted regeneration of polymeric and zeolite adsorbents. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120640] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Liu C, Wang L, Peng J, Zhang L. Ultrasound and microwave-assisted recycling of spent mercuric chloride catalyst. ENVIRONMENTAL TECHNOLOGY 2022; 43:1405-1416. [PMID: 33001744 DOI: 10.1080/09593330.2020.1831618] [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: 04/26/2020] [Accepted: 09/24/2020] [Indexed: 06/11/2023]
Abstract
It is urgent to develop a high-efficient process for recycling the spent mercuric chlorides catalyst (SMC) from vinyl chloride monomer (VCM) production with the implementation of the 'Minamata Convention on mercury'. A ultrasound and microwave-assisted technology were developed to treat SMC in this study. Firstly, organic carbon deposition was separated from SMC by pretreatment (ultrasonic-assisted ethanol extraction). The optimized extraction conditions were: ultrasonic time 2 h, ultrasonic power 700 W, extraction temperature 65°C, and liquid-solid ratio 7:1. Under these conditions, 90% of hazardous Cl-containing organics were separated from SMC. Then the pretreated SMC was treated by microwave heating for mercury removal. Residual mercury concentration of SMC decreased from original 1.33% to only 11.92 mg/kg at the preferred conditions of 500°C for 60 min and the treated SMC passed the Toxicity Characteristics Leaching Procedure (TCLP) test. Simultaneously, catalyst support activated carbon (AC) was regenerated with specific surface area increasing from original 263.85 to 627.5 m2/g. The organics from macropores and surface of AC was removed by pretreatment, intensifying the subsequent Hg removal and regeneration of AC as revealed by the comparative studies. Finally, SMC was subjected to water leaching for recovering metal values. 88.7% of Ba and 95.3% of Ce were leached with ultrasonic power 500 W and ultrasonic time 120 min. SMC was detoxified and valuable components Hg, AC, Ba, Ce were recovered by this new process, which may provide a new idea for industrial treatment of SMC.
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Affiliation(s)
- Chao Liu
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, People's Republic of China
| | - Lu Wang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, People's Republic of China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, People's Republic of China
- National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, People's Republic of China
| | - Jinhui Peng
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, People's Republic of China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, People's Republic of China
- National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, People's Republic of China
| | - Libo Zhang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, People's Republic of China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, People's Republic of China
- National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, People's Republic of China
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8
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Activated Carbon as Superadsorbent and Sustainable Material for Diverse Applications. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/4184809] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Activated carbon is a carbonaceous material with highly porous structure. Different functionalities can be introduced to its surface by various physical and chemical treatments. Various precursors can be used for the synthesis of activated carbon such as fossil fuels, agricultural wastes, and lignocellulosic wastes, etc. Number of papers have been reported in literature devoted to the synthesis, characterization, and various applications of activated carbon. Herein, in this review, special attention has been paid to the basic properties of activated carbon and its surface chemistry originated due to physical and chemical treatment. In addition, a general introduction to adsorption process, various adsorption isotherms, and adsorption kinetics is also included. A brief description of mechanism of adsorption onto activated carbon is also presented. At last, most probable applications of activated carbon such as adsorption of pollutants (e.g., dyes, heavy metal ions, pesticides, pharmaceutical waste products, and volatile organic organic), as catalyst support, anduse in food and pharmaceutical industries is also presented.
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Lim KY, Foo KY. One-step synthesis of carbonaceous adsorbent from soybean bio-residue by microwave heating: Adsorptive, antimicrobial and antifungal behavior. ENVIRONMENTAL RESEARCH 2022; 204:112044. [PMID: 34516977 DOI: 10.1016/j.envres.2021.112044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 08/23/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
In this work, the transformation of soybean industrial bio-residue with limited practical applications, into a multifunctional carbonaceous adsorbent (SBAC) via one-step microwave-irradiation has been succeeded. The surface porosity, chemical compositions, functionalities and surface chemistry were featured by microscopic pore-textural analysis, elemental constitution analysis, morphological characterization and Fourier transform infra-red spectroscopy. The adsorptive performance of SBAC was evaluated in a batch experiment by adopting different classes of water pollutants, specifically methylene blue (MB), acetaminophen and 2,4-dichlorophenoxyacetic acid (2,4-D). The equilibrium uptakes were analyzed with respect to the non-linearized Langmuir, Freundlich and Temkin isotherm equations. The unique features of SBAC, specifically the antimicrobial and antifungal efficacies were examined against gram-positive/negative bacteria and fungi species. An ordered microporous-mesoporous structure of SBAC, with the BET surface area and total pore volume of 1696 m2/g and 0.94 m3/g, respectively, has been achieved. The equilibrium data of MB and acetaminophen were found to be in good agreement with the Langmuir isotherm model, with the monolayer adsorption capacities (Qo) of 434.57 mg/g and 393.31 mg/g, respectively. The adsorptive experiment of 2,4-D was best fitted to the Freundlich isotherm equation, with the Qo of 253.17 mg/g. The regeneration performance of the spent SBAC under microwave-irradiation could maintain at 69.42-79.31%, even after five (5) adsorption-regeneration cycles. SBAC exhibited excellent inhibition efficiencies against gram-positive/negative bacteria and fungi species, with the inhibition zones at 14.0-28.0 mm. This newly developed SBAC appears to be a new powerful candidate for the remediation of different classes of water contaminants, and novel antibacterial and antifungal agents against biological contaminations. The novel concept of "turn waste into wealth" in a cost-effective and energy saving manner for environmental preservation has been successfully accomplished.
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Affiliation(s)
- Kah Yee Lim
- River Engineering and Urban Drainage Research Centre (REDAC), Universiti Sains Malaysia (USM), Engineering Campus, Seri Ampangan, 14300, Nibong Tebal, Penang, Malaysia.
| | - Keng Yuen Foo
- River Engineering and Urban Drainage Research Centre (REDAC), Universiti Sains Malaysia (USM), Engineering Campus, Seri Ampangan, 14300, Nibong Tebal, Penang, Malaysia.
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Hussin F, Aroua MK, Szlachta M. Biochar derived from fruit by-products using pyrolysis process for the elimination of Pb(II) ion: An updated review. CHEMOSPHERE 2022; 287:132250. [PMID: 34547565 DOI: 10.1016/j.chemosphere.2021.132250] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/02/2021] [Accepted: 09/12/2021] [Indexed: 06/13/2023]
Abstract
Water pollution is one of the most concerning global environmental problems in this century with the severity and complexity of the issue increases every day. One of the major contributors to water pollution is the discharge of harmful heavy metal wastes into the rivers and water bodies. Without proper treatment, the release of these harmful inorganic waste would endanger the environment by contaminating the food chains of living organisms, hence, leading to potential health risks to humans. The adsorption method has become one of the cost-effective alternative treatments to eliminate heavy metal ions. Since the type of adsorbent material is the most vital factor that determines the effectiveness of the adsorption, continuous efforts have been made in search of cheap adsorbents derived from a variety of waste materials. Fruit waste can be transformed into valuable products, such as biochar, as they are composed of many functional groups, including carboxylic groups and lignin, which is effective in metal binding. The main objective of this study was to review the potential of various types of fruit wastes as an alternative adsorbent for Pb(II) removal. Following a brief overview of the properties and effects of Pb(II), this study discussed the equilibrium isotherms and adsorption kinetic by various adsorption models. The possible adsorption mechanisms and regeneration study for Pb(II) removal were also elaborated in detail to provide a clear understanding of biochar produced using the pyrolysis technique. The future prospects of fruit waste as an adsorbent for the removal of Pb(II) was also highlighted.
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Affiliation(s)
- Farihahusnah Hussin
- Research Centre for Carbon Dioxide Capture and Utilisation (CCDCU), School of Engineering and Technology, Sunway University, No. 5 Jalan Universiti, Bandar Sunway, 47500, Petaling Jaya, Selangor, Malaysia.
| | - Mohamed Kheireddine Aroua
- Research Centre for Carbon Dioxide Capture and Utilisation (CCDCU), School of Engineering and Technology, Sunway University, No. 5 Jalan Universiti, Bandar Sunway, 47500, Petaling Jaya, Selangor, Malaysia; Department of Engineering, Lancaster University, Lancaster, LA1 4YW, UK
| | - Małgorzata Szlachta
- Faculty of Environmental Engineering, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland; Geological Survey of Finland, P.O. Box 96, FI-02151, Espoo, Finland
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11
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Enhanced microwave regeneration of a polymeric adsorbent through carbon nanotubes deposition. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119616] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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The Influence of Mesh Granularity on the Accuracy of FEM Modelling of the Resonant State in a Microwave Chamber. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11177932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Microwave technology is widely used in different areas of advanced industry when energy must be provided to water-containing and other materials. The main barrier in the development of microwave devices is the possibility of efficient design by modelling a microwave system in a resonant state. For technical systems, the finite element method is widely used. However, the convergence process in the microwave finite element solver is sophisticated. The process itself and the influence of mesh granularity on the accuracy of modelling of microwave chambers in resonant states have not been investigated previously. The present paper aims to fill this gap. The resonance conditions of a microwave chamber were tested from the point of view of spatial resolution of the tetrahedral mesh used for open-source ELMER FEM software. The presented results experimentally determine the limits of accuracy of the geometry of microwave resonant chamber finite element method-based models. The determined values of microwave resonant chamber dimension tolerances should be considered for both open-source and commercial software for microwave modelling.
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13
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Palladium particles supported on porous CeMnO3 perovskite for catalytic oxidation of benzene. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126687] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Bakdash RS, Aljundi IH, Basheer C, Abdulazeez I, Al‐Saadi AA. Porous Fluorocarbon from Rice Husk for the Efficient Separation of Gases. GLOBAL CHALLENGES (HOBOKEN, NJ) 2021; 5:2000124. [PMID: 34267928 PMCID: PMC8272015 DOI: 10.1002/gch2.202000124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 03/13/2021] [Indexed: 06/13/2023]
Abstract
A porous fluorocarbon sorbent is synthesized from rice husk (RH) in a microwave reactor and then evaluated for the adsorption of different gases (CH4, CO2, and N2). The fluorocarbon is characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), Raman spectroscopy, Thermal gravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS). Significant enhancement in the surface area of activated carbon material is obtained from 29 to 531 m2 g-1 after removing naturally present silica in RH. Results reveal that rice husk fluorocarbon (RHF) has a higher adsorption affinity for CO2 (1.8 mmol g-1) than that of the sulfonated rice husk (RHS) (1.4 mmol g-1) at 298 K while the corresponding separation factor of CO2/CH4 is 4 and 3; respectively. Higher separation factors of 12 and 10 are observed for the binary system of CO2/N2, respectively. Quantum chemical density functional theory (DFT) calculations agree with the experimental observations. They reveal that RHF exhibits strong columbic interactions with considerable interaction energies of -87.85, -76.75, and -55.65 kcal mol-1 with CO2, CH4, and N2 gases; respectively. Finally, the adsorption process results are highly reproducible, with a small decrease in the adsorption capacity of less than 5% after repeated trials.
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Affiliation(s)
- Rashed S. Bakdash
- Department of ChemistryKing Fahd University of Petroleum and MineralsDhahran31261Saudi Arabia
| | - Isam H. Aljundi
- Department of Chemical EngineeringKing Fahd University of Petroleum and MineralsDhahran31261Saudi Arabia
| | - Chanbasha Basheer
- Department of ChemistryKing Fahd University of Petroleum and MineralsDhahran31261Saudi Arabia
| | - Ismail Abdulazeez
- Department of ChemistryKing Fahd University of Petroleum and MineralsDhahran31261Saudi Arabia
| | - Abdulaziz A. Al‐Saadi
- Department of ChemistryKing Fahd University of Petroleum and MineralsDhahran31261Saudi Arabia
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15
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Microwave Irradiation in Technologies of Wastewater and Wastewater Sludge Treatment: A Review. WATER 2021. [DOI: 10.3390/w13131784] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Every year, the human impact on the world’s water sources becomes more pronounced. One of the triggers to this increase is the use of ineffective wastewater and sludge treatment systems. Recently, the number of studies of microwave processing in handling liquid municipal and industrial waste has increased. This paper discusses heat treatment, change in properties, decomposition of substances, removal of metals, demulsification, pyrolysis, biogas processing, disinfection, and other topics. The findings of European, Chinese, Russian, and other authors are summarised and presented in this review. In addition, the most notable Russian patents for microwave installations/devices and reactors suitable for a wide variety of applications are discussed. In this article, the authors look at microwave wastewater and sludge treatment from the perspective of practical application in various fields of human economic activity.
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16
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Gagliano E, Falciglia PP, Zaker Y, Karanfil T, Roccaro P. Microwave regeneration of granular activated carbon saturated with PFAS. WATER RESEARCH 2021; 198:117121. [PMID: 33910144 DOI: 10.1016/j.watres.2021.117121] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/29/2021] [Accepted: 04/03/2021] [Indexed: 06/12/2023]
Abstract
This study investigated the regeneration of PFAS-saturated granular activated carbons (GACs) by microwave (MW) irradiation. Two commercially available GACs (bituminous coal based GAC [BCGAC] and lignite coal based GAC [LCGAC]) were saturated with perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) and then irradiated at different MW conditions (applied power = 125 - 500 W, irradiation time = 3 - 12 min). The performance of MW regeneration for PFOS- or PFOA-saturated GACs was assessed by evaluating the variation of GAC adsorption capacity (regeneration efficiency, RE) and weight loss percentage (WL). Moreover, the effect of MW irradiation on GAC textural properties (e.g., surface area and pore volume) was examined through N2 adsorption isotherms. Additionally, five successive adsorption/regeneration cycles were carried out at the MW operational condition that allowed to reach the target temperature (T>600°C) while minimizing the WL. Both GACs exhibited a strong ability to convert MW irradiation into a rapid temperature increase (~150°C min-1 at 500 W). The highest values of RE (>90%) for both PFOA- and PFOS-saturated GACs were obtained at MW irradiation conditions that employed short regeneration time (3 min) and optimal temperature. Indeed, the highest RE did not occur at the highest temperatures (>750°C) due to the damage of GAC porous structure, particularly for LCGAC. After five cycles, the observed values of RE (~65%) and a moderate weight loss (<7%) demonstrated the good performance of MW irradiation for regenerating PFOA- and PFOS-saturated BCGAC. The obtained findings pointed out that MW irradiation is a promising alternative regeneration technique for PFAS-saturated GAC.
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Affiliation(s)
- Erica Gagliano
- Department of Civil Engineering and Architecture, University of Catania, Catania, 95125, Italy
| | - Pietro P Falciglia
- Department of Civil Engineering and Architecture, University of Catania, Catania, 95125, Italy
| | - Yeakub Zaker
- Department of Environmental Engineering and Earth Science, Clemson University, Clemson (SC), 29634, United States of America
| | - Tanju Karanfil
- Department of Environmental Engineering and Earth Science, Clemson University, Clemson (SC), 29634, United States of America.
| | - Paolo Roccaro
- Department of Civil Engineering and Architecture, University of Catania, Catania, 95125, Italy.
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17
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Ali SH, Emran MY, Gomaa H. Rice Husk-Derived Nanomaterials for Potential Applications. WASTE RECYCLING TECHNOLOGIES FOR NANOMATERIALS MANUFACTURING 2021:541-588. [DOI: 10.1007/978-3-030-68031-2_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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18
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Zhang Z, Wang J, Feng Y, Zhang W, Zuo S, Guo J. Microwave desorption mechanism and microwave effect based on SO 2 chemical dissociation and mass transfer of basic aluminium sulfate desulfurization rich liquid. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00109d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A microwave liquid-phase desorption technique for enhancing mass transfer with chemical dissociation has been proposed for the first time.
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Affiliation(s)
- Zijing Zhang
- College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, P. R. China
| | - Junna Wang
- College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, P. R. China
| | - Yu Feng
- College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, P. R. China
| | - Weiwei Zhang
- College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, P. R. China
| | - Shuangji Zuo
- College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, P. R. China
| | - Jianmin Guo
- College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, P. R. China
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19
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Agani I, Fatombi JK, Osseni SA, Idohou EA, Neumeyer D, Verelst M, Mauricot R, Aminou T. Removal of atrazine from aqueous solutions onto a magnetite/chitosan/activated carbon composite in a fixed-bed column system: optimization using response surface methodology. RSC Adv 2020; 10:41588-41599. [PMID: 35516539 PMCID: PMC9057781 DOI: 10.1039/d0ra07873e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 11/02/2020] [Indexed: 01/01/2023] Open
Abstract
In this study, a magnetite/chitosan/activated carbon (MCHAC) composite is proposed as an efficient adsorbent for the removal of atrazine from aqueous solutions. The prepared composite was characterized using Fourier-transform infrared (FTIR) and X-ray diffraction (XRD) methods. Response surface methodology (RSM) coupled with composite central design (CCD) were used to optimize the effects of the four independent variables, pH, initial concentration of atrazine (C0), bed depth (H), and flow rate (Q), which influence the adsorption process. The experimental results modeled using response surface methodology (RSM) coupled with central composite design (CCD) (RSM–CCD) indicated a quadratic relationship with p < 0.0001 for adsorption capacity at saturation (qs) and fraction of bed utilization (FBU). The results of the experiments performed under the optimized conditions, pH = 5.07, C0 = 137.86 mg L−1, H = 2.99 cm and Q = 1.038 mL min−1, showed a qs value of 62.32 mg g−1 and FBU of 72.26%, with a deviation value of less than 0.05 from the predicted qs and FBU values. The obtained breakthrough curves were fitted with four mathematical models, Thomas, Bohart–Adams, Yan and Yoon–Nelson, in order to determine the limiting step of the mass transfer of the atrazine adsorption onto the composite. A desorption study of the composite revealed the high reuse potential for MCHAC, thus, the prepared material could be used as a low-cost and efficient adsorbent for the decontamination of polluted wastewater. In this study, a magnetite/chitosan/activated carbon (MCHAC) composite is proposed as an efficient adsorbent for the removal of atrazine from aqueous solutions.![]()
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Affiliation(s)
- Ignace Agani
- Laboratoire de Chimie de l'Eau et de l'Environnement (LCEE), Ecole Normale Supérieure de Natitingou Benin +229-97895404
| | - Jacques K Fatombi
- Laboratoire de Chimie de l'Eau et de l'Environnement (LCEE), Ecole Normale Supérieure de Natitingou Benin +229-97895404.,Laboratoire d'Expertise et de Recherche en Chimie de l'Eau et de l'Environnement (LERCEE), UAC Benin
| | - Sèmiyou A Osseni
- Laboratoire de Chimie de l'Eau et de l'Environnement (LCEE), Ecole Normale Supérieure de Natitingou Benin +229-97895404
| | - Esta A Idohou
- Laboratoire de Chimie de l'Eau et de l'Environnement (LCEE), Ecole Normale Supérieure de Natitingou Benin +229-97895404
| | - David Neumeyer
- Centre d'Elaboration de Matériaux et d'Etudes Structurales, Université de Toulouse - UPS 29 rue Jeanne Marvig, Cedex 4 31055 Toulouse BP 94347 France
| | - Marc Verelst
- Centre d'Elaboration de Matériaux et d'Etudes Structurales, Université de Toulouse - UPS 29 rue Jeanne Marvig, Cedex 4 31055 Toulouse BP 94347 France
| | - Robert Mauricot
- Centre d'Elaboration de Matériaux et d'Etudes Structurales, Université de Toulouse - UPS 29 rue Jeanne Marvig, Cedex 4 31055 Toulouse BP 94347 France
| | - Taofiki Aminou
- Laboratoire d'Expertise et de Recherche en Chimie de l'Eau et de l'Environnement (LERCEE), UAC Benin
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20
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Wang Y, Duan X, Xie Y, Sun H, Wang S. Nanocarbon-Based Catalytic Ozonation for Aqueous Oxidation: Engineering Defects for Active Sites and Tunable Reaction Pathways. ACS Catal 2020. [DOI: 10.1021/acscatal.0c04232] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yuxian Wang
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum-Beijing, Beijing 102249, China
| | - Xiaoguang Duan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Yongbing Xie
- Division of Environment Technology and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Hongqi Sun
- School of Engineering, Edith Cowan University, Joondalup, Western Australia 6027, Australia
| | - Shaobin Wang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
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21
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dos Reis GS, Larsson SH, de Oliveira HP, Thyrel M, Claudio Lima E. Sustainable Biomass Activated Carbons as Electrodes for Battery and Supercapacitors-A Mini-Review. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1398. [PMID: 32708405 PMCID: PMC7407268 DOI: 10.3390/nano10071398] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/12/2020] [Accepted: 07/14/2020] [Indexed: 01/08/2023]
Abstract
Some recent developments in the preparation of biomass carbon electrodes (CEs) using various biomass residues for application in energy storage devices, such as batteries and supercapacitors, are presented in this work. The application of biomass residues as the primary precursor for the production of CEs has been increasing over the last years due to it being a renewable source with comparably low processing cost, providing prerequisites for a process that is economically and technically sustainable. Electrochemical energy storage technology is key to the sustainable development of autonomous and wearable electronic devices. This article highlights the application of various types of biomass in the production of CEs by using different types of pyrolysis and experimental conditions and denotes some possible effects on their final characteristics. An overview is provided on the use of different biomass types for the synthesis of CEs with efficient electrochemical properties for batteries and supercapacitors. This review showed that, from different biomass residues, it is possible to obtain CEs with different electrochemical properties and that they can be successfully applied in high-performance batteries and supercapacitors. As the research and development of producing CEs still faces a gap by linking the type and composition of biomass residues with the carbon electrodes' electrochemical performances in supercapacitor and battery applications, this work tries to diminish this gap. Physical and chemical characteristics of the CEs, such as porosity, chemical composition, and surface functionalities, are reflected in the electrochemical performances. It is expected that this review not only provides the reader with a good overview of using various biomass residues in the energy storage applications, but also highlights some goals and challenges remaining in the future research and development of this topic.
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Affiliation(s)
- Glaydson Simões dos Reis
- Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences, Biomass Technology Centre, SE-901 83 Umeå, Sweden; (S.H.L.); (M.T.)
| | - Sylvia H. Larsson
- Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences, Biomass Technology Centre, SE-901 83 Umeå, Sweden; (S.H.L.); (M.T.)
| | | | - Mikael Thyrel
- Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences, Biomass Technology Centre, SE-901 83 Umeå, Sweden; (S.H.L.); (M.T.)
| | - Eder Claudio Lima
- Institute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves 9500, Porto Alegre 91501-970, Brazil;
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22
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Sustainable Activated Carbon Production via Microwave for Wastewater Treatment: A Comparative Review. BORNEO JOURNAL OF RESOURCE SCIENCE AND TECHNOLOGY 2020. [DOI: 10.33736/bjrst.2030.2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This is an era where the application of adsorption and usage of activated carbons (AC) are considered as mainstream water treatments. The upgrade of these materials may only be through its preparation methods, where most researchers have transitioned from using the conventional furnace methods to using microwave ovens. Derived from various precursors, ACs can be the key in developing numerous environmental applications. This paper reviews the development of production processes of AC from various precursors in the past decades by microwave heating. The importance of the applied methodology and how activating conditions play an influential role, such as carbonisation temperature, activation time, and impregnation ratio are also outlined in this review. From the review of AC production processes, ACs produced from various precursors by chemical method with microwave heating have shown to be the significant factor in developing ACs with relatively higher surface area compared to conventional heating ACs.
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23
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Ge X, Wu Z, Manzoli M, Wu Z, Cravotto G. Feasibility and the Mechanism of Desorption of Phenolic Compounds from Activated Carbons. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01402] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xinyu Ge
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin 10125, Italy
| | - Zhilin Wu
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin 10125, Italy
- Nanjing Institute of Environmental Science of the Ministry of Environment Protection of China, Nanjing 210042, China
| | - Maela Manzoli
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin 10125, Italy
| | - Zhansheng Wu
- School of Environmental and Chemical Engineering, Xi’an Polytechnic University, Xi’an 710048, China
| | - Giancarlo Cravotto
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin 10125, Italy
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24
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Singh S, Kumar V, Datta S, Dhanjal DS, Sharma K, Samuel J, Singh J. Current advancement and future prospect of biosorbents for bioremediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 709:135895. [PMID: 31884296 DOI: 10.1016/j.scitotenv.2019.135895] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/02/2019] [Accepted: 12/01/2019] [Indexed: 05/12/2023]
Abstract
The increasing use of heavy metals, synthetic dyes and pesticides is a major environmental concern. Wastewaters containing heavy metals and dyes, extensively released from small and large scale industries enter excessively into food chains resulting in mutagenesis, carcinogenicity and serious health impairments in living systems. The arrays of technologies are implemented to date to remediate both inorganic and organic contaminants from wastewaters. Among which, adsorption is the most attractive method as it employs eco-friendly, sustainable and cost-effective biomaterials. Use of bioadsorbents is advantageous over the conventional adsorbents. Clay, chitin, peat, microbial biomass and agricultural wastes are commonly used bioadsorbants. These bioadsorbents are extensively used for elimination of dyes, heavy metals, adsorption of toxic industrial effluents, removal of fertilizers/pesticides, atmospheric pollutants and nuclear waste from the environment. The current review presents state of the art knowledge on various types of biosorbents, their uses, and mechanism of action. Various strategies to enhance the efficiency of bioadsorbents and physicochemical conditions to remediate dyes and heavy metals from waste streams are also incorporated in this review. Use of nano-bioadsorbents in industries to minimize the hazardous effect of solid and liquid waste has also been discussed.
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Affiliation(s)
- Simranjeet Singh
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India; Punjab Biotechnology Incubators, Mohali 160059, Punjab, India; Regional Advanced Water Testing Laboratory, Mohali 160059, Punjab, India
| | - Vijay Kumar
- Regional Ayurveda Research Institute for Drug Development, Gwalior 474009, MP, India
| | - Shivika Datta
- Department of Zoology, Doaba College Jalandhar, Punjab, India
| | - Daljeet Singh Dhanjal
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Kankan Sharma
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Jastin Samuel
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India; Waste Valorization Research Lab, Lovely Professional University, Phagwara - 144411, Punjab, India
| | - Joginder Singh
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India.
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25
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Wei L, Zietzschmann F, Rietveld LC, van Halem D. Fluoride removal by Ca-Al-CO 3 layered double hydroxides at environmentally-relevant concentrations. CHEMOSPHERE 2020; 243:125307. [PMID: 31733543 DOI: 10.1016/j.chemosphere.2019.125307] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 10/31/2019] [Accepted: 11/03/2019] [Indexed: 06/10/2023]
Abstract
In this study, F- removal by Ca-Al-CO3 layered double hydroxides (LDHs) was investigated at environmentally-relevant concentration ranges (2-12 mg/L) to below the WHO guideline, with an emphasis on the effect of LDHs' modification, as well as the effects of initial F- concentration, adsorbent dose, pH, temperature and co-existing ions. Ca-Al-CO3 LDHs, either untreated, calcined or microwave treated, showed affinity for the removal of F- from synthetic groundwater with capacities of 6.7-8.4 mg F-/g LDHs at groundwater-relevant pH, with a higher F- removal capacity at lower pH (<8) and lower temperature (12 °C, as compared to 25 °C & 35 °C). Since calcination and microwave treatment resulted in only marginal defluorination improvements, using untreated LDHs appears the practically most feasible option. For the untreated LDHs, competition with Cl- and NO3- was not observed, whereas at higher HCO3- and SO42- concentrations (>250 mg/L) a slight reduction in F- removal was observed. This study indicates the potential of Ca-Al-CO3 LDHs as a cost-effective F- removal technology, particularly when locally sourced and in combination with low-cost pH correction.
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Affiliation(s)
- Liangfu Wei
- Faculty of Civil Engineering and Geosciences, Department of Sanitary Engineering, Delft University of Technology, P.O. Box 5048, 2600 GA, Delft, the Netherlands.
| | - Frederik Zietzschmann
- Faculty of Civil Engineering and Geosciences, Department of Sanitary Engineering, Delft University of Technology, P.O. Box 5048, 2600 GA, Delft, the Netherlands
| | - Luuk C Rietveld
- Faculty of Civil Engineering and Geosciences, Department of Sanitary Engineering, Delft University of Technology, P.O. Box 5048, 2600 GA, Delft, the Netherlands
| | - Doris van Halem
- Faculty of Civil Engineering and Geosciences, Department of Sanitary Engineering, Delft University of Technology, P.O. Box 5048, 2600 GA, Delft, the Netherlands
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26
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Shirazi EK, Metzger JW, Fischer K, Hassani AH. Simultaneous removal of a cationic and an anionic textile dye from water by a mixed sorbent of vermicompost and Persian charred dolomite. CHEMOSPHERE 2019; 234:618-629. [PMID: 31229723 DOI: 10.1016/j.chemosphere.2019.05.224] [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: 01/18/2019] [Revised: 05/22/2019] [Accepted: 05/25/2019] [Indexed: 06/09/2023]
Abstract
The potential of a mixed sorbent consisting of vermicompost and Persian charred dolomite for simultaneous adsorption of Basic Violet 16 (BV16) and Reactive Red 195 (RR195) was investigated. First-order derivative spectrophotometry was used for simultaneous analysis of the two dyes. In single dye experiments, the maximum adsorption capacity of vermicompost for BV16 was found to be 16 mg g-1 and the adsorption capacity of charred dolomite for RR195 was 7.3 mg g-1. Anionic RR195 was not noticeably adsorbed by vermicompost (negative surface charge) and cationic BV16 not by charred dolomite (positive surface charge) but adsorbed by the oppositely charged adsorbents which indicates a selective electrostatic adsorption mechanism. In binary dye solution, BV16 adsorption onto charred dolomite was increased in the presence of RR195 (synergistic effect), yet RR195 adsorption on charred dolomite was not influenced by BV16. An antagonistic effect of RR195 was concluded for BV16 adsorption onto vermicompost. The adsorption equilibrium data for both adsorbents fitted more acceptable to the Langmuir isotherm model than to the Freundlich model in single and binary solutions, but other than the adsorption of BV16 on vermicompost in binary solution which followed the Freundlich model. More than 50% of the removal efficiencies determined for both dyes onto the mixed sorbents were >70% which highlights that the mixed sorbent investigated is highly efficacious for the simultaneous removal of cationic and anionic dyes from contaminated groundwater. Eight cycles reusing vermicompost with 1 N NaOH for regeneration demonstrates the practicability and economic advantage of this natural biosorbent.
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Affiliation(s)
- Elham Khalilzadeh Shirazi
- Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Stuttgart, Germany.
| | - Jörg W Metzger
- Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Stuttgart, Germany.
| | - Klaus Fischer
- Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Stuttgart, Germany.
| | - Amir Hessam Hassani
- Faculty of Natural Sciences and Environment, Department of Environmental Engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran.
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27
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Quesada HB, Baptista ATA, Cusioli LF, Seibert D, de Oliveira Bezerra C, Bergamasco R. Surface water pollution by pharmaceuticals and an alternative of removal by low-cost adsorbents: A review. CHEMOSPHERE 2019; 222:766-780. [PMID: 30738319 DOI: 10.1016/j.chemosphere.2019.02.009] [Citation(s) in RCA: 174] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 01/31/2019] [Accepted: 02/03/2019] [Indexed: 05/17/2023]
Abstract
Micropollutants, also called emerging contaminants, consist of an extensive group of synthetic and natural substances, including pharmaceuticals, personal care products, steroid hormones, and agrochemicals. Currently, the monitoring of residual pharmaceuticals in the environment has been highlighted due to the fact that many of these substances are found in wastewater treatment plants effluents and surface waters, in concentrations ranging from ng L-1 to μg L-1. Most of these compounds are discharged into the environment continuously through domestic sewage treatment systems. In the present work, it is presented an overview of water pollution by these pollutants, as well as a review of the recent literature about the use of low-cost adsorbents for the removal of the main pharmaceuticals found in surface water, focusing on municipal and agroindustrial wastes as precursors. It was possible to observe several examples of high adsorption capacities of these compounds with such materials, however other aspects must be considered in order to evaluate the real applicability in water and wastewater treatment, such as competition, recyclability and production cost.
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Affiliation(s)
- Heloise Beatriz Quesada
- State University of Maringa, Department of Chemical Engineering, Maringa, 87020-900, Parana, Brazil.
| | | | - Luís Fernando Cusioli
- State University of Maringa, Department of Chemical Engineering, Maringa, 87020-900, Parana, Brazil.
| | - Daiana Seibert
- State University of Maringa, Department of Chemical Engineering, Maringa, 87020-900, Parana, Brazil.
| | | | - Rosângela Bergamasco
- State University of Maringa, Department of Chemical Engineering, Maringa, 87020-900, Parana, Brazil.
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28
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Lindroos M, Hörnström D, Larsson G, Gustavsson M, van Maris AJA. Continuous removal of the model pharmaceutical chloroquine from water using melanin-covered Escherichia coli in a membrane bioreactor. JOURNAL OF HAZARDOUS MATERIALS 2019; 365:74-80. [PMID: 30412809 DOI: 10.1016/j.jhazmat.2018.10.081] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/17/2018] [Accepted: 10/26/2018] [Indexed: 05/20/2023]
Abstract
Environmental release and accumulation of pharmaceuticals and personal care products is a global concern in view of increased awareness of ecotoxicological effects. Adsorbent properties make the biopolymer melanin an interesting alternative to remove micropollutants from water. Recently, tyrosinase-surface-displaying Escherichia coli was shown to be an interesting self-replicating production system for melanin-covered cells for batch-wise absorption of the model pharmaceutical chloroquine. This work explores the suitability of these melanin-covered E. coli for the continuous removal of pharmaceuticals from wastewater. A continuous-flow membrane bioreactor containing melanized E. coli cells was used for adsorption of chloroquine from the influent until saturation and subsequent regeneration. At a low loading of cells (10 g/L) and high influent concentration of chloroquine (0.1 mM), chloroquine adsorbed until saturation after 26 ± 2 treated reactor volumes (39 ± 3 L). The average effluent concentration during the first 20 h was 0.0018 mM, corresponding to 98.2% removal. Up to 140 ± 6 mg chloroquine bound per gram of cells following mixed homo- and heterogeneous adsorption kinetics. In situ low-pH regeneration released all chloroquine without apparent capacity loss over three consecutive cycles. This shows the potential of melanized cells for treatment of conventional wastewater or highly concentrated upstream sources such as hospitals or manufacturing sites.
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Affiliation(s)
- Magnus Lindroos
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Industrial Biotechnology, AlbaNova University Center, 114 21, Stockholm, Sweden.
| | - David Hörnström
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Industrial Biotechnology, AlbaNova University Center, 114 21, Stockholm, Sweden.
| | - Gen Larsson
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Industrial Biotechnology, AlbaNova University Center, 114 21, Stockholm, Sweden.
| | - Martin Gustavsson
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Industrial Biotechnology, AlbaNova University Center, 114 21, Stockholm, Sweden.
| | - Antonius J A van Maris
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Industrial Biotechnology, AlbaNova University Center, 114 21, Stockholm, Sweden.
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29
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New and Advanced Porous Carbon Materials in Fine Chemical Synthesis. Emerging Precursors of Porous Carbons. Catalysts 2019. [DOI: 10.3390/catal9020133] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The efficiency of porous carbons in fine chemical synthesis, among other application fields, has been demonstrated since both the porous structure and chemical surface provide the appropriated chemical environment favoring a great variety of relevant chemical transformations. In recent years, metal organic frameworks (MOFs) and covalent organic frameworks (COFs) have emerged as interesting opportunities in the preparation of porous carbons with improved physico-chemical properties. Direct calcination of MOFs or COFs, in the presence or not of others carbon or heteroatom sources, could be considered an easy and practical approach for the synthesis of highly dispersed heteroatom-doped porous carbons but also new porous carbons in which single atoms of metallic species are present, showing a great development of the porosity; both characteristics of supreme importance for catalytic applications. The goal of this review is to provide an overview of the traditional methodologies for the synthesis of new porous carbon structures together with emerging ones that use MOFs or COFs as carbon precursors. As mentioned below, the catalytic application in fine chemical synthesis of these kinds of materials is at present barely explored, but probably will expand in the near future.
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Moradi Alvand Z, Rajabi HR, Mirzaei A, Masoumiasl A, Sadatfaraji H. Rapid and green synthesis of cadmium telluride quantum dots with low toxicity based on a plant-mediated approach after microwave and ultrasonic assisted extraction: Synthesis, characterization, biological potentials and comparison study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 98:535-544. [PMID: 30813055 DOI: 10.1016/j.msec.2019.01.010] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 12/30/2018] [Accepted: 01/03/2019] [Indexed: 02/05/2023]
Abstract
In this work, a quick, facile and efficient approach was presented for green synthesis of cadmium telluride quantum dots (CdTe QDs) based on an aqueous extract of the Ficus johannis plant. Two extraction methods involving microwave assisted extraction (MWAE; 90 and 270 w; 15 min) and ultrasonic assisted extraction (USAE; 15 min; 45 °C) were performed as eco-friendly, effective, green and fast techniques for the extract preparation of the fruit's plant. The as-prepared plant extracts were used as natural stabilizing precursors in the synthesis of CdTe QDs. The synthesized QDs were characterized using various techniques. The average particle size of the QDs from the X-ray diffraction patterns was calculated to be 1.2 nm. UV-Vis absorption and fluorescence spectroscopic studies show a wide absorption band from 400 to 425 nm and a maximum emission peak around 470 nm, which confirmed the successful synthesis of CdTe QDs via the applied synthetic method. After synthesis and characterization of the samples, the antimicrobial properties, genotoxicity, toxicity and antifungal activities of the as-prepared CdTe QDs were investigated. In addition, antioxidant properties of the samples (QDs and extracts), were evaluated by different antioxidant assays. The results indicate the significant antimicrobial activity of the extract and CdTe QDs samples, with negligible toxicity and genotoxicity impacts.
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Affiliation(s)
| | | | - Ali Mirzaei
- Medicinal Plant Research Center, Yasuj University of Medical sciences, Yasuj, Iran.
| | - Asad Masoumiasl
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj 75918-74831, Iran
| | - Hamed Sadatfaraji
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Science, Mashhad, Iran
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31
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Liu C, Chen W, Li M, Hong S, Li W, Pan M, Wu Q, Mei C. Rapid microwave activation of waste palm into hierarchical porous carbons for supercapacitors using biochars from different carbonization temperatures as catalysts. RSC Adv 2019; 9:19441-19449. [PMID: 35519395 PMCID: PMC9065327 DOI: 10.1039/c9ra03031j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 06/13/2019] [Indexed: 11/30/2022] Open
Abstract
A rapid, simple and cost-effective approach to prepare hierarchical porous carbons (PCs) for supercapacitors is reported by microwave activation of abundant and low-cost waste palm, biochar (BC) and KOH. BCs from waste palm at different carbonization temperatures (300–700 °C), as catalysts and microwave receptors, were used here for the first time to facilitate the conversion of waste palm into hierarchical PCs. As a result, the high-graphitization PC obtained at a BC carbonization temperature of 300 °C (PC-300) possessed a high surface area (1755 m2 g−1), a high pore volume (0.942 cm3 g−1) and a moderate mesoporosity (37.79%). Besides their high-graphitization and hierarchical porous structure, the oxygen doping in PC-300 can also promote the rapid transport of electrolyte ions. The symmetric supercapacitor based on the PC-300 even in PVA/LiCl gel electrolyte exhibited a high specific capacitance of 164.8 F g−1 at a current density of 0.5 A g−1 and retained a specific capacitance of 121.3 F g−1 at 10 A g−1, demonstrating a superior rate capacity of 73.6%. Additionally, the PC-300 supercapacitor delivered a high energy density of 14.6 W h kg−1 at a power density of 398.9 W kg−1 and maintained an energy density of 10.8 W h kg−1 at a high power density of 8016.5 W kg−1, as well as an excellent cycling stability after 2000 cycles with a capacitance retention of 92.06%. A rapid, simple and cost-effective approach to prepare hierarchical porous carbons (PCs) for supercapacitors is reported by microwave activation of abundant and low-cost waste palm, biochar (BC) and KOH.![]()
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Affiliation(s)
- Chaozheng Liu
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
- Jiangsu Engineering Research Center of Fast-growing Trees and Agri-fiber Materials
| | - Weimin Chen
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
- Jiangsu Engineering Research Center of Fast-growing Trees and Agri-fiber Materials
| | - Meichun Li
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
- Jiangsu Engineering Research Center of Fast-growing Trees and Agri-fiber Materials
| | - Shu Hong
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
- Jiangsu Engineering Research Center of Fast-growing Trees and Agri-fiber Materials
| | - Wanzhao Li
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
- Jiangsu Engineering Research Center of Fast-growing Trees and Agri-fiber Materials
| | - Mingzhu Pan
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
- Jiangsu Engineering Research Center of Fast-growing Trees and Agri-fiber Materials
| | - Qinglin Wu
- School of Renewable Natural Resources
- Louisiana State University
- Baton Rouge
- USA
| | - Changtong Mei
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
- Jiangsu Engineering Research Center of Fast-growing Trees and Agri-fiber Materials
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32
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Shengli S, Junping L, Qi L, Fangru N, Jia F, Shulian X. Optimized preparation of Phragmites australis activated carbon using the Box-Behnken method and desirability function to remove hydroquinone. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 165:411-422. [PMID: 30218964 DOI: 10.1016/j.ecoenv.2018.09.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 09/05/2018] [Accepted: 09/06/2018] [Indexed: 06/08/2023]
Abstract
In this study, preparation of Phragmites australis activated carbon (PAAC) was optimized and applied for the removal of hydroquinone from aqueous solution. The Box-Behnken surface design (33) was used to statistically visualize the interactions among microwave power (A), microwave radiation time (B) and the ingredient ratio (C) (H3PO4: P. australis powder, in g). The desirability function was utilized to simultaneously optimize the multi-response indicators. A regression analysis showed that the experimental data of BBD optimization experimental results fit well to a quadratic model. PAAC was characterized according to its morphology, structure and composition. Dynamic adsorption data showed that the best fit was obtained by a pseudo-second-order model and the Freundlich isotherm model. The maximum adsorption capacity for hydroquinone adsorption onto PAAC was 156.25 mg/g at 30 ℃ and the adsorption mechanism may be attributed to multi-layer surface and chemisorption via donor-acceptor and coupling interaction of the electron. The present study showed that PAAC has the potential for use as a biosorbent for the adsorption treatment of water pollutants.
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Affiliation(s)
- Shi Shengli
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Lv Junping
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Liu Qi
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Nan Fangru
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Feng Jia
- School of Life Science, Shanxi University, Taiyuan 030006, China.
| | - Xie Shulian
- School of Life Science, Shanxi University, Taiyuan 030006, China.
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Oladunni J, Zain JH, Hai A, Banat F, Bharath G, Alhseinat E. A comprehensive review on recently developed carbon based nanocomposites for capacitive deionization: From theory to practice. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.06.046] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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A Review on the Synthesis and Characterization of Biomass-Derived Carbons for Adsorption of Emerging Contaminants from Water. C — JOURNAL OF CARBON RESEARCH 2018. [DOI: 10.3390/c4040063] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This review analyzes the preparation and characterization of biomass-derived carbons and their application as adsorbents of emerging contaminants from water. The study begins by identifying the different types of emerging contaminants more often found in water streams, including a brief reference to the available technologies for their removal. It also describes the biomass sources that could be used for the synthesis of biochars and activated carbons (AC). The characterization of the adsorbents and the different approaches that can be followed to learn about the adsorption processes are also detailed. Finally, the work reviews literature studies focused on the adsorption of emerging contaminants on biochars and activated carbons synthesized from biomass precursors.
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35
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Namal OO, Kalipci E. Adsorption kinetics of methylene blue using alkali and microwave-modified apricot stones. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1541469] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Osman Onder Namal
- Department of Environmental Engineering, Nevsehir Haci Bektas Veli University, Nevsehir, Turkey
| | - Erkan Kalipci
- Department of Environmental Engineering, Nevsehir Haci Bektas Veli University, Nevsehir, Turkey
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36
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Lin G, Cheng S, Wang S, Hu T, Peng J, Xia H, Jiang F, Li S, Zhang L. Process optimization of spent catalyst regeneration under microwave and ultrasonic spray-assisted. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.09.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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37
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Ge X, Wu Z, Cravotto G, Manzoli M, Cintas P, Wu Z. Cork wastewater purification in a cooperative flocculation/adsorption process with microwave-regenerated activated carbon. JOURNAL OF HAZARDOUS MATERIALS 2018; 360:412-419. [PMID: 30130699 DOI: 10.1016/j.jhazmat.2018.08.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 07/10/2018] [Accepted: 08/06/2018] [Indexed: 06/08/2023]
Abstract
The aim of this work is to investigate a novel cork wastewater (CW) purification method that combines flocculation/adsorption with the microwave assisted regeneration of coconut powder activated carbon (CPAC). The flocculation treatment made use of FeSO4·7H2O/NaOH and provided high removal efficiency, as shown by the observed values of UV254 (90%), chemical oxygen demand (COD, 86%), polyphenols (PP, 81%),total solid (TS, 40%), total suspended solid (TSS, 62%), and total dissolved solid (TDS, 18%). After the flocculation and filtration, CPAC was used to further remove left TSS, TDS and dissolved organics. The effects of CPAC amount, pH value and adsorption time have been studied. It was found that 250 mg is the optimum CPAC amount for the treatment of 50 mL CW at pH 3.5 for 10 min. Overall process effectiveness can be summarised as follows: UV254 (100%), COD (98%), PP (100%), TS (58%), TSS (93%), and TDS (24%), while the characteristic colour of the CW completely disappeared. The microwave regenerated CPAC can undergo five runs without appreciable losses in removal efficiency. Predictably, this simple and scalable process could afford a promising treatment method for other industrial wastewaters with high content of organic matters such as PP, phenolic acids and tannins.
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Affiliation(s)
- Xinyu Ge
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin 10125, Italy
| | - Zhilin Wu
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin 10125, Italy; Nanjing Institute of Environmental Science of the Ministry of Environmental Protection of China, Nanjing, China
| | - Giancarlo Cravotto
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin 10125, Italy.
| | - Maela Manzoli
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Turin 10125, Italy
| | - Pedro Cintas
- Departamento de Química Orgánica e Inorgánica and IACYS-Unidad de Química Verde Desarrollo Sostenible, Universidad de Extremadura, 06006 Badajoz, Spain
| | - Zhansheng Wu
- School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
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38
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Characteristics and Treatment Methods of Medical Waste Incinerator Fly Ash: A Review. Processes (Basel) 2018. [DOI: 10.3390/pr6100173] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Medical waste incinerator fly ash (MWIFA) is quite different from municipal solid waste incinerator fly ash (MSWIFA) due to its special characteristics of high levels of chlorines, dioxins, carbon constituents, and heavy metals, which may cause irreversible harm to environment and human beings if managed improperly. However, treatment of MWIFA has rarely been specifically mentioned. In this review, various treatment techniques for MSWIFA, and their merits, demerits, applicability, and limitations for MWIFA are reviewed. Natural properties of MWIFA including the high contents of chlorine and carbonaceous matter that might affect the treatment effects of MWIFA are also depicted. Finally, several commendatory and feasible technologies such as roasting, residual carbon melting, the mechanochemical technique, flotation, and microwave treatment are recommended after an overall consideration of the special characteristics of MWIFA, balancing environmental, technological, economical information.
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39
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İzgi MS, Saka C, Baytar O, Saraçoğlu G, Şahin Ö. Preparation and Characterization of Activated Carbon from Microwave and Conventional Heated Almond Shells Using Phosphoric Acid Activation. ANAL LETT 2018. [DOI: 10.1080/00032719.2018.1495223] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Mehmet Sait İzgi
- Faculty of Engineering and Architecture, Siirt University, Siirt, Turkey
| | - Cafer Saka
- School of Health, Siirt University, Siirt, Turkey
| | - Orhan Baytar
- Faculty of Engineering and Architecture, Siirt University, Siirt, Turkey
| | - Gamze Saraçoğlu
- Faculty of Engineering and Architecture, Siirt University, Siirt, Turkey
| | - Ömer Şahin
- Faculty of Engineering and Architecture, Siirt University, Siirt, Turkey
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40
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Cave G, Fatehi P. Adsorption optimization of a biomass-based fly ash for treating thermomechanical pulping (TMP) pressate using definitive screening design (DSD). CAN J CHEM ENG 2018. [DOI: 10.1002/cjce.23128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Germaine Cave
- Chemical Engineering Department; Lakehead University; 955 Oliver Road, Thunder Bay, ON, P7B5E1, Canada
| | - Pedram Fatehi
- Chemical Engineering Department; Lakehead University; 955 Oliver Road, Thunder Bay, ON, P7B5E1, Canada
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41
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Atamanyuk V, Huzova I, Gnativ Z. Intensification of Drying Process During Activated Carbon Regeneration. CHEMISTRY & CHEMICAL TECHNOLOGY 2018. [DOI: 10.23939/chcht12.02.263] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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42
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Liu C, Liu C, Zhang L, Peng J, Ma A, Hu T, Xia H. Microwave heating behaviors of used mercury-containing catalysts. CHEM ENG COMMUN 2018. [DOI: 10.1080/00986445.2018.1463525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Chao Liu
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan, China
- National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Chenhui Liu
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan, China
- National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, Yunnan, China
| | - Libo Zhang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan, China
- National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Jinhui Peng
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan, China
- National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Aiyuan Ma
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan, China
- National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Tu Hu
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan, China
- National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Hongying Xia
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan, China
- National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
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43
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Sharif YM, Saka C, Baytar O, Şahin Ö. Preparation and Characterization of Activated Carbon from Sesame Seed Shells by Microwave and Conventional Heating with Zinc Chloride Activation. ANAL LETT 2018. [DOI: 10.1080/00032719.2018.1450415] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
| | - Cafer Saka
- School of Health, Siirt University, Siirt, Turkey
| | - Orhan Baytar
- Faculty of Engineering and Architecture, Siirt University, Siirt, Turkey
| | - Ömer Şahin
- Faculty of Engineering and Architecture, Siirt University, Siirt, Turkey
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45
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Huang J, Yan Z. Adsorption Mechanism of Oil by Resilient Graphene Aerogels from Oil-Water Emulsion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:1890-1898. [PMID: 29307185 DOI: 10.1021/acs.langmuir.7b03866] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A facile synthesis strategy was adopted to prepare resilient graphene aerogel (GA) with properties of high emulsified oil adsorption capacities, excellent rebounding performance, oil-water selectivity, and recycling abilities. The maximum adsorption capacity of GA for emulsified diesel oil was 2.5 × 104 mg g-1. The microscopic kinetic and thermodynamic mutual reaction models of diesel oil emulsion adsorption onto GA were investigated to describe the adsorption mechanism. The emulsified diesel oil was able to be separated efficiently from the oil-water emulsion by GA because of their high oil selectivity. Interestingly, both kinetics and thermodynamic experiments show that emulsified oil adsorption on GA is a physical adsorption and spontaneous process. Besides, GA can be reused with prominent repeatability for at least 10 cycles, demonstrating feasibility in practical applications of GA-based oily water treatment.
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Affiliation(s)
- Jiankun Huang
- State Key Laboratory for Heavy Oil Processing, PetroChina Key Laboratory of Catalysis, China University of Petroleum (East) , Qingdao, Shandong 266580, People's Republic of China
| | - Zifeng Yan
- State Key Laboratory for Heavy Oil Processing, PetroChina Key Laboratory of Catalysis, China University of Petroleum (East) , Qingdao, Shandong 266580, People's Republic of China
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46
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Removal of Hexavalent Chromium by Adsorption on Microwave Assisted Activated Carbon Prepared from Stems of Leucas Aspera. Z PHYS CHEM 2018. [DOI: 10.1515/zpch-2017-0998] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
This study reports adsorption of Cr(VI) ions from aqueous solution using activated carbon that was prepared from stems of Leucas aspera. Eight hundred and fifty watts power of microwave radiation, 12 min of radiation time, 60% of ZnCl2 solution and 24 h of impregnation time are the optimal parameters to prepare efficient carbon effective activated carbon. It was designated as MWLAC (Microwave assisted Zinc chloride activated Leucas aspera carbon). Various adsorption characteristics such as dose of the adsorbent, agitation time, initial Cr(VI) ion concentration, pH of the solution and temperature on adsorption were studied for removal of Cr(VI) ions from aqueous solution by batch mode. Also the equilibrium adsorption was analyzed by the Langmuir, Freundlich, Tempkin and D-R isotherm models. The order of best describing isotherms was given based on R2 value. The pseudo-second-order kinetic model best fitted with the Cr(VI) adsorption data. Thermodynamic parameters were also determined and results suggest that the adsorption process is a spontaneous, endothermic and proceeded with increased randomness.
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47
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Performance Study of a Novel Solar Solid Dehumidification/Regeneration Bed for Use in Buildings Air Conditioning Systems. ENERGIES 2017. [DOI: 10.3390/en10091335] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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48
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Sivarajasekar N, Balasubramani K, Mohanraj N, Prakash Maran J, Sivamani S, Ajmal Koya P, Karthik V. Fixed-bed adsorption of atrazine onto microwave irradiated Aegle marmelos Correa fruit shell: Statistical optimization, process design and breakthrough modeling. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.06.064] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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49
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Lin G, Liu C, Zhang L, Hu T, Peng J, Li J, Wang S. High temperature dielectric properties of spent adsorbent with zinc sulfate by cavity perturbation technique. JOURNAL OF HAZARDOUS MATERIALS 2017; 330:36-45. [PMID: 28208091 DOI: 10.1016/j.jhazmat.2017.02.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 02/06/2017] [Accepted: 02/07/2017] [Indexed: 06/06/2023]
Abstract
Dielectric properties of spent adsorbent with zinc sulfate are investigated by cavity perturbation technique at 2450MHz from 20°C to approximately 1000°C. Two weight loss stages are observed for spent adsorbent by thermogravimetric-differential scanning calorimeter (TG-DSC) analysis, and zinc sulfate is decomposed to ZnO·2ZnSO4 and ZnO at about 750°C and 860°C. Microwave absorption capability of ZnSO4 increases with increasing temperature and declines after ZnO generation on account of the poor dielectric properties. Dielectric properties of spent adsorbent are dependent on apparent density and noticed an interestingly linearly relationship at room temperature. The three parameters increase gently from 20°C to 400°C, but a sharp increase both in real part and imaginary part are found subsequently due to the volatiles release and regeneration of carbon. And material conductivity is improved, which contributes to the π-electron conduction appearance. Relationship between penetration depth and temperature further elaborate spent adsorbent is an excellent microwave absorber and the microwave absorption capability order of zinc compounds is ZnO·2ZnSO4, ZnSO4 and ZnO. Heating characteristics suggest that heating rate is related with dielectric properties of materials. The pore structures of spent adsorbent are improved significantly and the surface is smoother after microwave-regeneration.
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Affiliation(s)
- Guo Lin
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming, Yunnan 650093, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, Yunnan 650093, China
| | - Chenhui Liu
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming, Yunnan 650093, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, Yunnan 650093, China; Faculty of Chemistry and Environment, Yunnan Minzu University, Kunming, Yunnan 650093, China
| | - Libo Zhang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming, Yunnan 650093, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, Yunnan 650093, China.
| | - Tu Hu
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming, Yunnan 650093, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, Yunnan 650093, China
| | - Jinhui Peng
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming, Yunnan 650093, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, Yunnan 650093, China
| | - Jing Li
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming, Yunnan 650093, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, Yunnan 650093, China
| | - Shixing Wang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming, Yunnan 650093, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming, Yunnan 650093, China
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Fixed-Bed Adsorption of Ranitidine Hydrochloride Onto Microwave Assisted—Activated Aegle marmelos Correa Fruit Shell: Statistical Optimization and Breakthrough Modelling. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2017. [DOI: 10.1007/s13369-017-2565-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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