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Tan L, Nie Y, Chang H, Zhu L, Guo K, Ran X, Zhong N, Zhong D, Xu Y, Ho SH. Adsorption performance of Ni(II) by KOH-modified biochar derived from different microalgae species. BIORESOURCE TECHNOLOGY 2024; 394:130287. [PMID: 38181998 DOI: 10.1016/j.biortech.2023.130287] [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: 11/06/2023] [Revised: 12/28/2023] [Accepted: 12/30/2023] [Indexed: 01/07/2024]
Abstract
Microalgae biochar is potential adsorbents to remove heavy metals from wastewater due to abundant functional groups, high porosity and wide sources, but performance is not fully developed since it depends on microalgae species attributing to distinct morphology and biomass compositions. Here, two microalgae species Chlorella Pyrenoidosa and Scenedesmus Obliquus were used for biochar preparation via KOH-modification, biochar properties and their influences on Ni(II) adsorption were investigated. Ni(II) adsorption performances responding to biochar properties and operating conditions were upgraded via progressive optimization and response surface methodology. Together, adsorption isotherms and kinetics were analyzed to obtain significant factors for Ni(II) removal. As results, 100 % of Ni(II) removal was achieved under 100 mg/L initial Ni(II) concentration as pH was higher than the biochar zero-charge point of 6.87 with low biochar dosage (0.5 g/L), which provides an efficient approach for heavy metal removal from wastewater with microalgae biochar.
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Affiliation(s)
- Ling Tan
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China; School of Resources & Environmental Science, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Yudong Nie
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Haixing Chang
- School of Resources & Environmental Science, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, China.
| | - Liandong Zhu
- School of Resources & Environmental Science, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Kehong Guo
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Xiongwei Ran
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Nianbing Zhong
- Intelligent Fiber Sensing Technology of Chongqing Municipal Engineering Research Center of Institutions of Higher Education, Chongqing Key Laboratory of Fiber Optic Sensor and Photodetector, Chongqing University of Technology, Chongqing 400054, China
| | - Dengjie Zhong
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Yunlan Xu
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Shih-Hsin Ho
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, Heilongjiang Province 150090, China
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2
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Wu G, Tham PE, Chew KW, Munawaroh HSH, Tan IS, Wan-Mohtar WAAQI, Sriariyanun M, Show PL. Net zero emission in circular bioeconomy from microalgae biochar production: A renewed possibility. BIORESOURCE TECHNOLOGY 2023; 388:129748. [PMID: 37714493 DOI: 10.1016/j.biortech.2023.129748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/09/2023] [Accepted: 09/06/2023] [Indexed: 09/17/2023]
Abstract
The rapid expansion of industrialization and continuous population growth have caused a steady increase in energy consumption. Despite using renewable energy, such as bioethanol, to replace fossil fuels had been strongly promoted, however the outcomes were underwhelming, resulting in excessive greenhouse gases (GHG) emissions. Microalgal biochar, as a carbon-rich material produced from the pyrolysis of biomass, provides a promising solution for achieving net zero emission. By utilizing microalgal biochar, these GHG emissions can be captured and stored efficiently. It also enhances soil fertility, improves water retention, and conduct bioremediation in agriculture and environmental remediation field. Moreover, incorporating microalgal biochar into a zero-waste biorefinery could boost the employ of biomass feedstocks effectively to produce valuable bioproducts while minimizing waste. This contributes to sustainability and aligns with the concepts of a circular bioeconomy. In addition, some challenges like commercialization and standardization will be addressed in the future.
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Affiliation(s)
- Guowei Wu
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Malaysia
| | - Pei En Tham
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Malaysia
| | - Kit Wayne Chew
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Heli Siti Halimatul Munawaroh
- Study Program of Chemistry, Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia, Jalan Dr. Setiabudi 229, Bandung 40154, Indonesia
| | - Inn Shi Tan
- Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, Miri, Sarawak 98009, Malaysia
| | - Wan Abd Al Qadr Imad Wan-Mohtar
- Functional Omics and Bioprocess Development Laboratory, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Malinee Sriariyanun
- Biorefinery and Process Automation Engineering Center, Department of Chemical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering, King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Malaysia; Department of Chemical Engineering, Khalifa University, Shakhbout Bin Sultan St - Zone 1, Abu Dhabi, United Arab Emirates.
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3
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Ahmad W, Jaiswal KK, Bajetha A, Naresh N, Verma R, Banerjee I. Microwave-irradiated bio-fabrication of TiO 2 nanoparticles stabilized by phytoconstituents from Phyllanthus emblica seeds and its antibacterial activities. INORG NANO-MET CHEM 2023. [DOI: 10.1080/24701556.2023.2184385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- Waseem Ahmad
- Department of Chemistry, Graphic Era (Deemed to Be University), Dehradun, Uttarakhand, India
| | - Krishna Kumar Jaiswal
- Bioprocess Engineering Laboratory, Department of Green Energy Technology, Pondicherry University, Puducherry, India
| | - Asha Bajetha
- Department of Chemistry, Uttaranchal University, Dehradun, Uttarakhand, India
| | - Nibagani Naresh
- Department of Physics, Pondicherry University, Puducherry, India
| | - Ravikant Verma
- Department of Ecology and Environmental Sciences, Pondicherry University, Puducherry, India
| | - Ishita Banerjee
- Department of Biochemistry & Cellular and Molecular Biology, The University of Tennessee, Knoxville, TN, USA
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4
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Xia L, Tan J, Huang R, Zhang Z, Zhou K, Hu Y, Song S, Xu L, Farías ME, Sánchez RMT. Enhanced Cd(II) biomineralization induced by microalgae after cultivating modification in high-phosphorus culture. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130243. [PMID: 36308883 DOI: 10.1016/j.jhazmat.2022.130243] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 10/09/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
In this study, high-phosphorus beared microalgae was prepared by cultivating modification in high-phosphorus culture, and used for the enhanced Cd(II) biomineralization in soil. Batch experiment results showed that Chlorella sorokiniana FK was modified successfully in highly phosphate culture. Both intracellular P (Poly-P, 29.7 mg/kg) and surface P (phosphoryl based functional groups, 3.7 mol/kg) were greatly enhanced, and the Cd(II) removal capacity surged to 45.98 mg/g at equilibrium in the Langmuir simulation. The EXAFS analysis indicated that Cd tended to form a more stable bidentate complex (RPO4)2Cd when bounding with phosphate groups on the surface of the high-phosphorus microalgae. Moreover, high-phosphorus beared microalgae not only had higher immobilization amount of Cd(II), but also promoted immobilized Cd from adsorbed state to mineralized state. After high-phosphate cultured, increased density of P-related groups provided more adsorption sites, while the decomposition of intracellular Poly-P released phosphate ions into cell surface microenvironment, which combined and promoted the formation of Cd3(PO4)2/Cd(H2PO4)2 on cell surface. Cd-contaminated soil remediation experiments applying high-surface-phosphate beared microalgae further showed that more Cd stabilized as a residue fraction within 49 days. This study proposes that the high-phosphate culture strategy is a good way to improve the immobilization of heavy metals in soil induced by microorganisms.
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Affiliation(s)
- Ling Xia
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, Wuhan University of Technology, Wenzhi Street 34, Wuhan, Hubei 430070, China
| | - Jiaqi Tan
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, Wuhan University of Technology, Wenzhi Street 34, Wuhan, Hubei 430070, China
| | - Rong Huang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, Wuhan University of Technology, Wenzhi Street 34, Wuhan, Hubei 430070, China
| | - Zijia Zhang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, Wuhan University of Technology, Wenzhi Street 34, Wuhan, Hubei 430070, China; Instituto de Física de la Universidad Autónoma de San Luis Potosí, Álvaro Obregón 64, 78000 San Luis Potosí, Mexico
| | - Keqiang Zhou
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, Wuhan University of Technology, Wenzhi Street 34, Wuhan, Hubei 430070, China; Instituto de Física de la Universidad Autónoma de San Luis Potosí, Álvaro Obregón 64, 78000 San Luis Potosí, Mexico.
| | - Yaxi Hu
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, Wuhan University of Technology, Wenzhi Street 34, Wuhan, Hubei 430070, China
| | - Shaoxian Song
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, Wuhan University of Technology, Wenzhi Street 34, Wuhan, Hubei 430070, China
| | - Lei Xu
- Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Key Laboratory for Protected Agricultural Engineering in the Middle and Lower Reaches of Yangtze River, Ministry of Agriculture and Rural Affairs, Nanjing 210014, Jiangsu, China.
| | - María Eugenia Farías
- Laboratorio de Investigaciones Microbiológicas de Lagunas Andinas (LIMLA), Planta Piloto de Procesos Industriales Microbiológicos (PROIMI), CCT, CONICET, San Miguel de Tucumán, Tucumán, Argentina
| | - Rosa María Torres Sánchez
- CETMIC, CONICET, CCT La Plata, CICBA, Camino Centenario y 506, 1897 M. B. Gonnet, La Plata, Argentina
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5
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Leon-Vaz A, Cubero-Cardoso J, Trujillo-Reyes Á, Fermoso FG, León R, Funk C, Vigara J, Urbano J. Enhanced wastewater bioremediation by a sulfur-based copolymer as scaffold for microalgae immobilization (AlgaPol). CHEMOSPHERE 2023; 315:137761. [PMID: 36610507 DOI: 10.1016/j.chemosphere.2023.137761] [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: 11/02/2022] [Revised: 12/28/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
In recent years, there has been an increasing concern related to the contamination of aqueous ecosystems by heavy metals, highlighting the need to improve the current techniques for remediation. This work intends to address the problem of removing heavy metals from waterbodies by combining two complementary methodologies: adsorption to a copolymer synthesized by inverse vulcanization of sulfur and vegetable oils and phytoremediation by the microalga Chlorella sorokiniana to enhance the metal adsorption. After studying the tolerance and growth of Chlorella sorokiniana in the presence of the copolymer, the adsorption of highly concentrated Cd2+ (50 mg L-1) by the copolymer and microalgae on their own and the combined immobilized system (AlgaPol) was compared. Additionally, adsorption studies have been performed on mixtures of the heavy metals Cd2+ and Cu2+ at a concentration of 8 mg L-1 each. AlgaPol biofilm is able to remove these metals from the growth medium by more than 90%. The excellent metal adsorption capacity of this biofilm can be kinetically described by a pseudo-second-order model.
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Affiliation(s)
- Antonio Leon-Vaz
- Laboratory of Biochemistry, Faculty of Experimental Sciences. Marine International Campus of Excellence and REMSMA. University of Huelva, 210071, Huelva, Spain; Department of Chemistry, Umeå University, 901 87, Umeå, Sweden.
| | - Juan Cubero-Cardoso
- Laboratory of Sustainable and Circular Technology, CIDERTA and Chemistry Department, Faculty of Experimental Sciences, Campus de "El Carmen", University of Huelva, 21071, Huelva, Spain; Instituto de Grasa, Spanish National Research Council (CSIC), Ctra. de Utrera, km. 1, 41013, Seville, Spain.
| | - Ángeles Trujillo-Reyes
- Instituto de Grasa, Spanish National Research Council (CSIC), Ctra. de Utrera, km. 1, 41013, Seville, Spain.
| | - Fernando G Fermoso
- Instituto de Grasa, Spanish National Research Council (CSIC), Ctra. de Utrera, km. 1, 41013, Seville, Spain.
| | - Rosa León
- Laboratory of Biochemistry, Faculty of Experimental Sciences. Marine International Campus of Excellence and REMSMA. University of Huelva, 210071, Huelva, Spain.
| | - Christiane Funk
- Department of Chemistry, Umeå University, 901 87, Umeå, Sweden.
| | - Javier Vigara
- Laboratory of Biochemistry, Faculty of Experimental Sciences. Marine International Campus of Excellence and REMSMA. University of Huelva, 210071, Huelva, Spain.
| | - Juan Urbano
- Laboratory of Sustainable and Circular Technology, CIDERTA and Chemistry Department, Faculty of Experimental Sciences, Campus de "El Carmen", University of Huelva, 21071, Huelva, Spain.
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6
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Purev O, Park C, Kim H, Myung E, Choi N, Cho K. Spirulina platensis Immobilized Alginate Beads for Removal of Pb(II) from Aqueous Solutions. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:1106. [PMID: 36673865 PMCID: PMC9859109 DOI: 10.3390/ijerph20021106] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/02/2023] [Accepted: 01/06/2023] [Indexed: 06/17/2023]
Abstract
Microalgae contain a diversity of functional groups that can be used as environmental adsorbents. Spirulina platensis is a blue-green microalga that comprises protein-N, which is advantageous for use in nitrogen-containing biomass as adsorbents. This study aimed to enhance the adsorption properties of alginate hydrogels by employing Spirulina platensis. Spirulina platensis was immobilized on sodium alginate (S.P@Ca-SA) via crosslinking. The results of field-emission scanning electron microscopy, Fourier-transform infrared, and X-ray photoelectron spectroscopy analyses of the N-containing functional groups indicated that Spirulina platensis was successfully immobilized on the alginate matrix. We evaluated the effects of pH, concentration, and contact time on Pb(II) adsorption by S.P@Ca-SA. The results demonstrated that S.P@Ca-SA could effectively eliminate Pb(II) at pH 5, reaching equilibrium within 6 h, and the maximum Pb(II) sorption capacity of S.P@Ca-SA was 87.9 mg/g. Our results indicated that S.P@Ca-SA fits well with the pseudo-second-order and Freundlich models. Compared with Spirulina platensis and blank alginate beads, S.P@Ca-SA exhibited an enhanced Pb(II) adsorption efficiency. The correlation implies that the amino groups act as adsorption sites facilitating the elimination of Pb(II).
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Affiliation(s)
- Oyunbileg Purev
- Department of Energy and Resource Engineering, Chosun University, Gwangju 61452, Republic of Korea
| | - Chulhyun Park
- Department of Energy and Resource Engineering, Chosun University, Gwangju 61452, Republic of Korea
| | - Hyunsoo Kim
- Department of Energy and Resource Engineering, Chosun University, Gwangju 61452, Republic of Korea
| | - Eunji Myung
- Green-Bio Research Facility Center, Seoul National University, Seoul 25354, Republic of Korea
| | - Nagchoul Choi
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Kanghee Cho
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
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7
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Liang L, Bai X, Hua Z. Enhancement of the immobilization on microalgae protective effects and carbamazepine removal by Chlorella vulgaris. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:79567-79578. [PMID: 35715671 DOI: 10.1007/s11356-022-21418-0] [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: 02/03/2022] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
Carbamazepine (CBZ) has drawn extensive attention due to their environmental threats. In this study, polyvinyl alcohol-sodium alginate polymers to immobilize Chlorella vulgaris (FACHB-8) were used to investigate whether immobilization can facilitate microalgae to alleviate the CBZ stress and enhance CBZ removal. The results showed that after immobilized treatment, the biomass of microalgae increased by approximately 20%, the maximum level of malondialdehyde content decreased from 28 to 13 μmol/g, and the photosynthetic capacity of FV/FM recovered to 90% of the control group. The CBZ removal rate increased from 67 to 84% by immobilization at a CBZ concentration of 80 mg·L-1. The results indicated that immobilization technology can effectively protect microalgae from CBZ toxicity and improve the removal of CBZ, especially at high concentrations (> 50 mg/L). Biodegradation was the dominant pathway for microalgae to remove carbamazepine. This study added the understanding of the microalgae responses under immobilization and the interactions between immobilized microalgae and CBZ removal, thereby providing a novel insight into microalgae technology in high concentration wastewater treatments.
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Affiliation(s)
- Lu Liang
- College of Environment, Hohai University, Xikang road 1#, Gulou District, Nanjing, 210098, China
| | - Xue Bai
- College of Environment, Hohai University, Xikang road 1#, Gulou District, Nanjing, 210098, China
| | - Zulin Hua
- College of Environment, Hohai University, Xikang road 1#, Gulou District, Nanjing, 210098, China.
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8
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Han J, Pei L, Du Y, Zhu Y. Tripolycyanamide-2,4,6-triformyl pyrogallol covalent organic frameworks with many coordination sites for detection and removal of heavy metal ions. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2021.11.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Kim H, Yang S, Lim YH, Ha JM, Kim DH. Upgrading bio-oil model compound over bifunctional Ru/HZSM-5 catalysts in biphasic system: Complete hydrodeoxygenation of vanillin. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:126525. [PMID: 34246521 DOI: 10.1016/j.jhazmat.2021.126525] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 06/21/2021] [Accepted: 06/25/2021] [Indexed: 06/13/2023]
Abstract
A complete hydrodeoxygenation(HDO) of vanillin to yield cycloalkanes was performed using bifunctional Ru loaded HZSM-5 catalysts with different metal loadings (0.1, 0.5, 1, 3, and 5 wt%) and Si/Al2 ratios (Si/Al2 = 23,300) in n-octane/water biphasic system. Both the reaction pathway and product distribution were influenced by the metal/acid balance of the catalysts. Higher metal/acid ratio promoted Caryl-C cleavage reaction, resulting in the increased yield of cyclohexane. Synergetic effect of metal and acid sites was observed in the bifunctional catalyst, attaining as high as 40-fold increase of metal efficiency in the ring hydrogenation reaction, compared to lone metal site catalyst. The effect of solvent composition was evaluated, revealing that the presence of water promoted the overall HDO reaction. By balancing metal/acid and introducing appropriate solvent system, efficient catalytic system that minimized carbon loss and improved metal efficiency for vanillin HDO was obtained.
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Affiliation(s)
- Hyungjoo Kim
- School of Chemical and Biological Engineering, Institute of Chemical Process, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Seungdo Yang
- School of Chemical and Biological Engineering, Institute of Chemical Process, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Yong Hyun Lim
- School of Chemical and Biological Engineering, Institute of Chemical Process, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jeong-Myeong Ha
- Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Do Heui Kim
- School of Chemical and Biological Engineering, Institute of Chemical Process, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.
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10
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Zhou X, Zhao J, Chen M, Zhao G, Wu S. Influence of catalyst and solvent on the hydrothermal liquefaction of woody biomass. BIORESOURCE TECHNOLOGY 2022; 346:126354. [PMID: 34798249 DOI: 10.1016/j.biortech.2021.126354] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/09/2021] [Accepted: 11/11/2021] [Indexed: 06/13/2023]
Abstract
Hydrothermal liquefaction of woody biomass with catalysts was commonly applied in bio-energy research, but the effects of catalyst and solvent on yield and properties of bio-energy are not clear. In this work, the influences of catalyst and solvent on bio-energy production were studied, during which four solvents and three catalysts were used, and the liquefaction parameters were optimized by experimental and Machine learning (ML) method. Results show that the maximum yields of bio-oil and biochar are 65.0% and 32.0%, respectively, and the caloricvalues of bio-oil and biochar are 31.2 MJ/kg and 26.5 MJ/kg, respectively. Alkaline catalysts and 1,4-butanediol-triethanolamine mix solvent can benefit the bio-energy generation. In addition, a Random Forest (RF) was developed to forecast the yields, and the method performed well with experimental results.
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Affiliation(s)
- Xinxing Zhou
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; Key Laboratory of Highway Construction and Maintenance Technology in Loess Region of Ministry of Transport, Shanxi Transportation Technology Research & Development Co., Ltd, Taiyuan 030032, China.
| | - Jun Zhao
- Institute of Bioresource and Agriculture, Department of Biology, Hong Kong Baptist University, Hong Kong SAR, China
| | - Meizhu Chen
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.
| | - Guangyuan Zhao
- Department of Civil and Environmental Engineering, University of Waterloo, Waterloo N2L 3G1, Canada
| | - Shaopeng Wu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
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11
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Hydrothermal Carbonization of Residual Algal Biomass for Production of Hydrochar as a Biobased Metal Adsorbent. SUSTAINABILITY 2022. [DOI: 10.3390/su14010455] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Conversion of residual algal biomass to value-added products is essential for enhancing the economics of algae cultivation. Algal hydrochar produced via hydrothermal carbonization of lipid-extracted Picochlorum oculatum is a material rich in oxygen functional groups and carbon (up to 67.3%) and hence a promising candidate for remediation of wastewaters. The hydrothermal carbonization conditions were optimized and the adsorption capacity of the hydrochar was tested for metal removal. By the end of the remediation process, cumulative removal of Al3+, Cu2+, Fe2+, Mg2+, Mn2+, and Pb2+ reached 89, 98, 75, 88, 75, and 100%, respectively. The adsorption of all metals was found to follow pseudo second-order kinetics and the Langmuir isotherm. Overall, when hydrothermal carbonization is applied to lipid-extracted algae, it generates a promising biobased adsorbent with value-added potential in metal remediation.
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12
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Verma M, Lee I, Sharma S, Kumar R, Kumar V, Kim H. Simultaneous Removal of Heavy Metals and Ciprofloxacin Micropollutants from Wastewater Using Ethylenediaminetetraacetic Acid-Functionalized β-Cyclodextrin-Chitosan Adsorbent. ACS OMEGA 2021; 6:34624-34634. [PMID: 34963947 PMCID: PMC8697388 DOI: 10.1021/acsomega.1c05015] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 12/02/2021] [Indexed: 05/15/2023]
Abstract
The current study pertains to the synthesis of an EDTA-functionalized β-cyclodextrin-chitosan (β-CD-CS-EDTA) composite via a two-step process for the adsorptive removal of toxic heavy metallic ions (i.e., Pb(II), Cu(II), and Ni(II)) and antibiotic micropollutant, i.e., ciprofloxacin (CIP), from water. Different batch adsorption experiments such as pH, reaction time and initial pollutant concentration effects were carried out to identify the adsorption condition to attain the maximum removal efficiency. Kinetics results fit well with the pseudo-second order (PSO) kinetics model for both inorganic and organic pollutants. However, adsorption of heavy metal ions to the adsorbent was faster than that of CIP. Isotherms results showed excellent monolayer adsorption capacities of 330.90, 161, and 118.90 mg g-1 for Pb(II), Cu(II), and Ni(II), respectively, with a heterogeneous adsorption capacity of 25.40 mg g-1 for CIP. The adsorption mechanism was investigated using energy dispersive X-ray (EDX), elemental mapping, and Fourier transform infrared (FTIR) techniques. More significantly, the synthesized adsorbent gave good removal efficiencies when it was applied to simultaneously adsorb metal ions and CIP from real wastewater. Furthermore, excellent reusability could be obtained, making it a viable alternative to remove the inorganic and organic micropollutants for wastewater treatment.
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Affiliation(s)
- Monu Verma
- Water-Energy
Nexus Laboratory, Department of Environmental Engineering, University of Seoul, Seoul 02504, Republic
of Korea
| | - Ingyu Lee
- Water-Energy
Nexus Laboratory, Department of Environmental Engineering, University of Seoul, Seoul 02504, Republic
of Korea
| | - Shaveta Sharma
- Water-Energy
Nexus Laboratory, Department of Environmental Engineering, University of Seoul, Seoul 02504, Republic
of Korea
| | - Ravi Kumar
- Department
of Chemistry, National Institute of Technology
Srinagar, Jammu
& Kashmir 190006, India
| | - Vinod Kumar
- Department
of Life Sciences, Graphic Era (Deemed to
Be University), Dehradun, Uttarakhand 248002, India
- Peoples’
Friendship University of Russia (RUDN University), Moscow 117198, Russian Federation
| | - Hyunook Kim
- Water-Energy
Nexus Laboratory, Department of Environmental Engineering, University of Seoul, Seoul 02504, Republic
of Korea
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Gaur VK, Sharma P, Gaur P, Varjani S, Ngo HH, Guo W, Chaturvedi P, Singhania RR. Sustainable mitigation of heavy metals from effluents: Toxicity and fate with recent technological advancements. Bioengineered 2021; 12:7297-7313. [PMID: 34569893 PMCID: PMC8806687 DOI: 10.1080/21655979.2021.1978616] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Accepted: 09/04/2021] [Indexed: 12/23/2022] Open
Abstract
Increase in anthropogenic activities due to rapid industrialization had caused an elevation in heavy metal contamination of aquatic and terrestrial ecosystems. These pollutants have detrimental effects on human and environmental health. The majority of these pollutants are carcinogenic, neurotoxic, and are very poisonous even at very low concentrations. Contamination caused by heavy metals has become a global concern for which the traditional treatment approaches lack in providing a cost-effective and eco-friendly solution. Therefore, the use of microorganisms and plants to reduce the free available heavy metal present in the environment has become the most acceptable method by researchers. Also, in microbial- and phyto-remediation the redox reaction shifts the valence which makes these metals less toxic. In addition to this, the use of biochar as a remediation tool has provided a sustainable solution that needs further investigations toward its implementation on a larger scale. Enzymes secreted by microbes and whole microbial cell are considered an eco-efficient biocatalyst for mitigation of heavy metals from contaminated sites. To the best of our knowledge there is very less literature available covering remediation of heavy metals aspect along with the sensors used for detection of heavy metals. Systematic management should be implemented to overcome the technical and practical limitations in the use of these bioremediation techniques. The knowledge gaps have been identified in terms of its limitation and possible future directions have been discussed.
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Affiliation(s)
- Vivek Kumar Gaur
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow Campus, Lucknow, India
| | - Poonam Sharma
- Department of Bioengineering, Integral University, Lucknow, India
| | - Prachi Gaur
- Department of Microbiology, Indian Institute of Management and Technology, Aligarh, India
| | - Sunita Varjani
- Paryavaran Bhavan, Gujarat Pollution Control Board, Gandhinagar, GujaratIndia
| | - Huu Hao Ngo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental, Engineering, University of Technology Sydney, Sydney, NSW – Australia
| | - Wenshan Guo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental, Engineering, University of Technology Sydney, Sydney, NSW – Australia
| | - Preeti Chaturvedi
- Aquatic Toxicology Laboratory, Environmental Toxicology Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology Research (Csir-iitr), LucknowUttar Pradesh, India
| | - Reeta Rani Singhania
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
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Qu W, Zhang C, Chen X, Ho SH. New concept in swine wastewater treatment: development of a self-sustaining synergetic microalgae-bacteria symbiosis (ABS) system to achieve environmental sustainability. JOURNAL OF HAZARDOUS MATERIALS 2021; 418:126264. [PMID: 34118545 DOI: 10.1016/j.jhazmat.2021.126264] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/12/2021] [Accepted: 05/28/2021] [Indexed: 06/12/2023]
Abstract
Much attention has been paid to developing methods capable of synchronous removal of pollutants from swine wastewater. Due to the natural symbiotic interactions between microalgae and bacteria, the microalgae-bacteria symbiosis (ABS) system has been found to have potential for treating wastewater. However, the corresponding biological mechanisms in the ABS system and the role of dynamic microbial community evolution in pollutant removal systems remain poorly understood. Therefore, we investigate the potential of an ABS system for pollutant removal applications and analyze the bacterial consortium symbiotically combined with Chlorella sp. MA1 and Coelastrella sp. KE4. The NH4+-N and PO43--P removal efficiencies were significantly increased from 12.79% to 99.52% and 35.66% to 96.06% due to biotic interactions between the microalgae and bacteria. The abundance of bacterial taxa and genes related to oxidative stress, cell growth and nitrogen transfer were found to increase in response to photosynthesis, respiration and NH4+-N uptake. Furthermore, pathogen inactivation was induced via microalgae, co-driven by microbial succession under high dissolved oxygen conditions. In this microalgae-enhanced ABS system, the interactions between microalgae and bacteria are established for pathogens elimination and nitrogen cycling, verifying that the ABS system is an effective and environmentally sustainable swine wastewater treatment method.
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Affiliation(s)
- Wenying Qu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Chaofan Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Xi Chen
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Shih-Hsin Ho
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
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