1
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Zhou L, Zhang G, Zeng Y, Bao X, Liu B, Cheng L. Endogenous iron-enriched biochar derived from steel mill wastewater sludge for tetracycline removal: Heavy metals stabilization, adsorption performance and mechanism. CHEMOSPHERE 2024; 359:142263. [PMID: 38719127 DOI: 10.1016/j.chemosphere.2024.142263] [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: 02/03/2024] [Revised: 04/24/2024] [Accepted: 05/04/2024] [Indexed: 05/13/2024]
Abstract
Steel mill wastewater sludge, as an iron-enriched solid waste, was expected to be converted into iron-enriched biochar with acceptable environmental risk by pyrolysis. The purpose of our study was to evaluate the chemical speciation transformation of heavy metals in biochar under various pyrolysis temperatures and its reutilization for tetracycline (TC) removal. The experimental data indicated that pyrolysis temperature was a key factor affecting the heavy metals speciation and bioavailability in biochar, and biochar with pyrolysis temperature at 450 °C was the most feasible for reutilization without potential risk. The endogenous iron-enriched biochar (FSB450) showed highly efficient adsorption towards TC, and its maximum adsorption capacity could reach 240.38 mg g-1, which should be attributed to its excellent mesoporous structure, abundant functional groups and endogenous iron cycling. The endogenous iron was converted to a stable iron oxide crystalline phase (Fe3O4 and MgFe2O4) by pyrolysis, which underwent a valence transition to form a coordination complex with TC by electron shuttling in the FSB450 matrix. The study provides a win-win approach for resource utilization of steel wastewater sludge and treatment of antibiotic contamination in wastewater.
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Affiliation(s)
- Lu Zhou
- School of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha 410114, PR China
| | - Guanhao Zhang
- School of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha 410114, PR China
| | - Yulin Zeng
- School of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha 410114, PR China
| | - Xunli Bao
- School of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha 410114, PR China
| | - Bei Liu
- School of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha 410114, PR China.
| | - Liang Cheng
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, PR China; Clinical College of Changsha Medical University, Changsha 410219, PR China.
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2
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Kang K, Hu Y, Khan I, He S, Fetahi P. Recent advances in the synthesis and application of magnetic biochar for wastewater treatment. BIORESOURCE TECHNOLOGY 2023; 390:129786. [PMID: 37758029 DOI: 10.1016/j.biortech.2023.129786] [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: 06/30/2023] [Revised: 08/23/2023] [Accepted: 09/12/2023] [Indexed: 10/03/2023]
Abstract
Magnetic biochar (MBC) is a novel bio-carbon material with both desired properties as adsorbent and magnetic characteristics. This review provides an up-to-date summary and discussion on the latest development of MBC, which covers the progress on its synthesis, application, and techno-economic analysis. The review indicates that the direct hydrothermal synthesis has been catching more research attention to produce MBC due to its mild reaction conditions. Instead of the Fe-loaded MBC, there is a trend of using Mn for the magnetization. For the MBC application, how to improve its adsorption performance for water decontamination, ideally to match that of the biochar (BC) or activated carbon, is important. In addition, more studies on the environmental impacts of MBC and life-cycle assessment decoding the process optimization options are necessary. This review will provide valuable references for the development of MBC and MBC-based materials for wastewater treatment.
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Affiliation(s)
- Kang Kang
- Biorefining Research Institute (BRI) and Chemical Engineering Department, Lakehead University, Thunder Bay, Ontario, P7B 5E1, 955 Oliver Road, Canada
| | - Yulin Hu
- Faculty of Sustainable Design Engineering, University of Prince Edward Island, Charlottetown PE C1A 4P3, Prince Edward Island, Canada
| | - Iltaf Khan
- Biorefining Research Institute (BRI) and Chemical Engineering Department, Lakehead University, Thunder Bay, Ontario, P7B 5E1, 955 Oliver Road, Canada
| | - Sophie He
- Department of Engineering, Dalhousie University, Truro, NS B2N 5E3, Canada
| | - Pedram Fetahi
- Biorefining Research Institute (BRI) and Chemical Engineering Department, Lakehead University, Thunder Bay, Ontario, P7B 5E1, 955 Oliver Road, Canada.
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3
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Zhu H, An Q, Syafika Mohd Nasir A, Babin A, Lucero Saucedo S, Vallenas A, Li L, Baldwin SA, Lau A, Bi X. Emerging applications of biochar: A review on techno-environmental-economic aspects. BIORESOURCE TECHNOLOGY 2023; 388:129745. [PMID: 37690489 DOI: 10.1016/j.biortech.2023.129745] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/15/2023] [Accepted: 09/06/2023] [Indexed: 09/12/2023]
Abstract
Biomass fast pyrolysis produces bio-oil and biochar achieving circular economy. This review explored the emerging applications of biochar. Biochar possesses the unique properties for removing emerging contaminants and for mine remediation, owing to its negative charge surface, high specific surface area, large pore size distribution and surface functional groups. Additionally, biochar could adsorb impurities such as CO2, moisture, and H2S to upgrade the biogas. Customizing pyrolysis treatments, optimizing the feedstock and pyrolysis operating conditions enhance biochar production and improve its surface properties for the emerging applications. Life cycle assessment and techno-economic assessment indicated the benefits of replacing conventional activated carbon with biochar.
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Affiliation(s)
- Hui Zhu
- Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Qing An
- Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada; Thermal and Environmental Engineering Institute, Mechanical Engineering College, Tongji University, Shanghai 201800, China
| | - Amirah Syafika Mohd Nasir
- Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Alexandre Babin
- Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Sofia Lucero Saucedo
- Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Amzy Vallenas
- Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Loretta Li
- Department of Civil Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Susan Anne Baldwin
- Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Anthony Lau
- Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Xiaotao Bi
- Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada.
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4
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Sun J, Benavente V, Jansson S, Mašek O. Comparative characterisation and phytotoxicity assessment of biochar and hydrochar derived from municipal wastewater microalgae biomass. BIORESOURCE TECHNOLOGY 2023; 386:129567. [PMID: 37506941 DOI: 10.1016/j.biortech.2023.129567] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/20/2023] [Accepted: 07/25/2023] [Indexed: 07/30/2023]
Abstract
Microalgae, originating from a tertiary treatment of municipal wastewater, is considered a sustainable feedstock for producing biochar and hydrochar, offering great potential for agricultural use due to nutrient content and carbon storage ability. However, there are risks related to contamination and these need to be carefully assessed to ensure safe use of material from wastewater microalgae. Therefore, this study compared the properties and phototoxicity of biochar and hydrochar produced via pyrolysis and hydrothermal carbonisation (HTC) of microalgae under different temperatures and residence times. While biochar promoted germination and seedling growth by up to 11.0% and 70.0%, respectively, raw hydrochar showed strong phytotoxicity, due to the high content of volatile matter. Two post-treatments, dichloromethane (DCM) washing and further pyrolysis, proved to be effective methods for mitigating phytotoxicity of hydrochar. Additionally, biochar had 35.8-38.6% fixed carbon, resulting in higher carbon sequestration potential compared to hydrochar.
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Affiliation(s)
- Jiacheng Sun
- UK Biochar Research Centre, School of Geosciences, University of Edinburgh, Crew Building, Alexander Crum Brown Road, Edinburgh EH9 3FF, UK.
| | - Veronica Benavente
- Department of Chemistry, Umeå University, SE-90187 Umeå, Sweden; RISE Processum AB, SE-89122 Örnsköldsvik, Sweden
| | - Stina Jansson
- Department of Chemistry, Umeå University, SE-90187 Umeå, Sweden
| | - Ondřej Mašek
- UK Biochar Research Centre, School of Geosciences, University of Edinburgh, Crew Building, Alexander Crum Brown Road, Edinburgh EH9 3FF, UK
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5
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Sun M, Ma Y, Yang Y, Zhu X. Effect of iron impregnation ratio on the properties and adsorption of KOH activated biochar for removal of tetracycline and heavy metals. BIORESOURCE TECHNOLOGY 2023; 380:129081. [PMID: 37100302 DOI: 10.1016/j.biortech.2023.129081] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/16/2023] [Accepted: 04/20/2023] [Indexed: 05/14/2023]
Abstract
The effect of iron impregnation ratio on magnetic biochars (MBCs) prepared by biomass pyrolysis accompanied by KOH activation has been less reported. In this study, MBCs were produced by one-step pyrolysis/KOH-activation of walnut shell, rice husk and cornstalk with different impregnation ratios (0.3-0.6). The properties, adsorption capacity and cycling performance for Pb(II), Cd(II) and tetracycline of MBCs were determined. MBCs prepared with low impregnation ratio (0.3) showed stronger adsorption capacity on tetracycline. The adsorption capacity of WS-0.3 toward tetracycline was up to 405.01 mg g-1, while that of WS-0.6 was only 213.81 mg g-1. It is noteworthy that rice husk and cornstalk biochar with an impregnation ratio of 0.6 were more effective in removing Pb(II) and Cd(II), and the content of Fe0 crystals on surface strengthened the ion exchange and chemical precipitation. This work highlights that the impregnation ratio should be changed according to the actual application scenarios of MBC.
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Affiliation(s)
- Mengchao Sun
- Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Yakai Ma
- Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Yaojun Yang
- Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Xifeng Zhu
- Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
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6
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Wurzer C, Oesterle P, Jansson S, Mašek O. Hydrothermal recycling of carbon absorbents loaded with emerging wastewater contaminants. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120532. [PMID: 36323358 DOI: 10.1016/j.envpol.2022.120532] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/06/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
Adsorption using carbon materials is one of the most efficient techniques for removal of emerging contaminants such as pharmaceuticals from wastewater. However, high costs are a major hurdle for their large-scale application in areas currently under economic constraints. While most research focuses on decreasing the adsorbent price by increasing its capacity, treatment costs for exhausted adsorbents and their respective end-of-life scenarios are often neglected. Here, we assessed a novel technique for recycling of exhausted activated biochars based on hydrothermal treatment at temperatures of 160-320 °C. While a treatment temperature of 280 °C was sufficient to fully degrade all 10 evaluated pharmaceuticals in solution, when adsorbed on activated biochars certain compounds were shielded and could not be fully decomposed even at the highest treatment temperature tested. However, the use of engineered biochar doped with Fe-species successfully increased the treatment efficiency, resulting in full degradation of all 10 parent compounds at 320 °C. The proposed recycling technique showed a high carbon retention in biochar with only minor losses, making the treatment a viable candidate for environmentally sound recycling of biochars. Recycled biochars displayed potentially beneficial structural changes ranging from an increased mesoporosity to additional oxygen bearing functional groups, providing synergies for subsequent applications as part of a sequential biochar system.
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Affiliation(s)
- Christian Wurzer
- UK Biochar Research Centre, School of GeoSciences, Crew Building, The King's Buildings, University of Edinburgh, EH9 3FF Edinburgh, UK.
| | - Pierre Oesterle
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
| | - Stina Jansson
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
| | - Ondřej Mašek
- UK Biochar Research Centre, School of GeoSciences, Crew Building, The King's Buildings, University of Edinburgh, EH9 3FF Edinburgh, UK
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7
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Patel AK, Katiyar R, Chen CW, Singhania RR, Awasthi MK, Bhatia S, Bhaskar T, Dong CD. Antibiotic bioremediation by new generation biochar: Recent updates. BIORESOURCE TECHNOLOGY 2022; 358:127384. [PMID: 35644454 DOI: 10.1016/j.biortech.2022.127384] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
The evolving multidrug resistance in microbes with increasing antibiotic pollution is becoming a severe global crisis. Recent developments on antibiotic remediations by biochar are promising. Advancements in biochar engineering enhanced biochar remediation efficiency to another level through developing new interactions and bonding abilities with antibiotic pollutants. Especially chemical/metal-composite modification significantly increased catalysis of biochar. The review's main focus is to underline biochar efficiency for the abatement of emerging antibiotic pollutants. Moreover, to relate feedstock, production conditions, and engineering techniques with biochar properties. Also, modification strategies are reviewed to obtain biochar or their composites before examining improved remediation potential ranging from 20 to 552 mg g-1 for various antibiotics. Biochar offers different interactions depending on the surface functionalities e.g., π-π stacking, electrostatic, H-bonding, etc. Biochar and related composites have also been reviewed for remarkable properties e.g., photocatalysis, adsorption, and oxidation processes. Furthermore, future research directions and opportunities for biochar research are discussed.
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Affiliation(s)
- Anil Kumar Patel
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Sustainable Environment Research Center, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Centre for Energy and Environmental Sustainability, Lucknow 226 029, Uttar Pradesh, India
| | - Ravi Katiyar
- Institute of Marine Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Chiu-Wen Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Sustainable Environment Research Center, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Reeta Rani Singhania
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Sustainable Environment Research Center, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Centre for Energy and Environmental Sustainability, Lucknow 226 029, Uttar Pradesh, India
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, People's Republic of China
| | - Shashikant Bhatia
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Thallada Bhaskar
- Academy of Scientific and Innovation Research (AcSIR) at CSIR-Indian Institute of Petroleum (IIP), Dehradun 248005, Uttarakhand, India; Biomass Conversion Area (BCA), Material Resource Efficiency Division (MRED), CSIR-Indian Institute of Petroleum (IIP), Dehradun 248005, Uttarakhand, India
| | - Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Sustainable Environment Research Center, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
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8
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Fito J, Kefeni KK, Nkambule TTI. The potential of biochar-photocatalytic nanocomposites for removal of organic micropollutants from wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 829:154648. [PMID: 35306069 DOI: 10.1016/j.scitotenv.2022.154648] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 02/25/2022] [Accepted: 03/14/2022] [Indexed: 06/14/2023]
Abstract
Biochar (BC)-photocatalyst nanocomposites have emerged as appealing water and wastewater treatment technology. Such nanocomposite materials benefit from the synergistic effect of adsorption and photocatalysis to attain improved removal of pollutants from water and wastewater. Under this review, three BC-based nanocomposite photocatalysts such as BC-TiO2, BC-ZnO, and BC-spinel ferrites were considered. These nanocomposites acquire intrinsic properties to improve the practical limitations of the pristine BC and photocatalysts. The BC-based nanocomposites attained high photocatalytic activity, mechanical hardness, thermal stability, chemically non-reactive, magnetically permeable, reduced energy band gaps, improved reusability, and simplified recovery. Moreover, BC-based photocatalytic nanocomposites showed reduced recombination rates of the electron-hole pairs which are desirable for photocatalytic applications. However, the surface areas of the composites are usually smaller than that of the BC but higher than those of the pristine photocatalysts. Practically, the performances of the nanocomposites are much superior to those of the corresponding pristine components. This hybrid treatment technology is an emerging field and its industrial application is still at an early stage of the investigation. Therefore, exploring the full potential and practical applications of this technology is highly encouraging. Hence, this review focused on the critical evaluation of the most recent research on the synthesis, characterization, and photocatalytic treatment efficiency of the BC photocatalyst nanocomposites towards emerging pollutants in the aqueous medium. Moreover, the influence of various sources of BC feedstocks and their limitations on adsorption and photodegradation activities are discussed in detail. Finally, concluding remarks and future research directions are given to assist and shape the exploration of BC-based nanocomposite photocatalysts in water treatment.
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Affiliation(s)
- Jemal Fito
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, 1710, South Africa.
| | - Kebede K Kefeni
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, 1710, South Africa.
| | - Thabo T I Nkambule
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, 1710, South Africa.
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9
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Wang Y, Akbarzadeh A, Chong L, Du J, Tahir N, Awasthi MK. Catalytic pyrolysis of lignocellulosic biomass for bio-oil production: A review. CHEMOSPHERE 2022; 297:134181. [PMID: 35248592 DOI: 10.1016/j.chemosphere.2022.134181] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 02/19/2022] [Accepted: 02/28/2022] [Indexed: 06/14/2023]
Abstract
Catalytic pyrolysis has been widely explored for bio-oil production from lignocellulosic biomass owing to its high feasibility and large-scale production potential. The aim of this review was to summarize recent findings on bio-oil production through catalytic pyrolysis using lignocellulosic biomass as feedstock. Lignocellulosic biomass, structural components and fundamentals of biomass catalytic pyrolysis were explored and summarized. The current status of bio-oil yield and quality from catalytic fast pyrolysis was reviewed and presented in the current review. The potential effects of pyrolysis process parameters, including catalysts, pyrolysis conditions, reactor types and reaction modes on bio-oil production are also presented. Techno-economic analysis of full-scale commercialization of bio-oil production through the catalytic pyrolysis pathway was reviewed. Further, limitations associated with current practices and future prospects of catalytic pyrolysis for production of high-quality bio-oils were summarized. This review summarizes the process of bio-oil production from catalytic pyrolysis and provides a general scientific reference for further studies.
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Affiliation(s)
- Yi Wang
- MOA Key Laboratory of New Materials and Facilities for Rural Renewable Energy, Henan Agricultural University, Zhengzhou, 450002, China; Henan International Joint Laboratory of Biomass Energy and Nanomaterials, Zhengzhou, 450002, China
| | - Abdolhamid Akbarzadeh
- Department of Bioresource Engineering, McGill University, Montreal, QC, H9X 3V9, Canada
| | - Li Chong
- Biomass Energy Engineering Research Centre, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jinyu Du
- School of Energy and Power Engineering, Henan University of Animal Husbandry and Economy, Henan Province, Zhengzhou, 450011, China
| | - Nadeem Tahir
- MOA Key Laboratory of New Materials and Facilities for Rural Renewable Energy, Henan Agricultural University, Zhengzhou, 450002, China; Henan International Joint Laboratory of Biomass Energy and Nanomaterials, Zhengzhou, 450002, China.
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Taicheng Road 3#, Yangling, Shaanxi, 712100, China.
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10
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Gillingham MD, Gomes RL, Ferrari R, West HM. Sorption, separation and recycling of ammonium in agricultural soils: A viable application for magnetic biochar? THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 812:151440. [PMID: 34742971 PMCID: PMC8811483 DOI: 10.1016/j.scitotenv.2021.151440] [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: 08/05/2021] [Revised: 10/23/2021] [Accepted: 11/01/2021] [Indexed: 05/24/2023]
Abstract
Recent research on the magnetisation of biochar, a carbon-based material that can be used as a sorbent, has opened novel opportunities in the field of environmental remediation, as incorporating magnetic particles into biochar can simplify subsequent separation. This could offer a sustainable circular economy-based solution in two areas of waste management; firstly, pyrolysis of agricultural waste for magnetic biochar synthesis could reduce greenhouse gas emissions derived from traditional agricultural waste processing, such as landfill and incineration, while secondly, application of magnetic biochar to remove excess nitrogen from soils (made possible through magnetic separation) could provide opportunities for this pollutant to be used as a recycled fertiliser. While sorption of pollutants by magnetic biochar has been researched in wastewater, few studies have investigated magnetic biochar use in polluted soils. Nitrogen pollution (e.g. NH4+), stemming from agricultural fertiliser management, is a major environmental and economic issue that could be significantly reduced before losses from soils occur. This review demonstrates that the use of magnetic biochar tailored to NH4+ adsorption has potential to remove (and recycle for reuse) excess nitrogen from soils. Analysis of research into recovery of NH4+ by sorption/desorption, biochar magnetisation and biochar-soil interactions, suggests that this is a promising application, but a more cohesive, interdisciplinary approach is called for to elucidate its feasibility. Furthermore, research shows variable impacts of biochar upon soil chemistry and biology, such as pH and microbial diversity. Considering wide concerns surrounding global biodiversity depletion, a more comprehensive understanding of biochar-soil dynamics is required to protect and support soil ecosystems. Finally, addressing research gaps, such as optimisation and scaling-up of magnetic biochar synthesis, would benefit from systems thinking approaches, ensuring the many complex considerations across science, industry, policy and economics are connected by circular-economy principles.
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Affiliation(s)
- Max D Gillingham
- Faculty of Engineering, University of Nottingham, Nottingham, United Kingdom.
| | - Rachel L Gomes
- Faculty of Engineering, University of Nottingham, Nottingham, United Kingdom
| | - Rebecca Ferrari
- Faculty of Engineering, University of Nottingham, Nottingham, United Kingdom
| | - Helen M West
- School of Biosciences, University of Nottingham, Nottingham, United Kingdom
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11
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Effective separation of uranium(VI) from wastewater using a magnetic carbon as a recyclable adsorbent. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120140] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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12
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A novel mesoporous Fe-silica aerogel composite with phenomenal adsorption capacity for malachite green. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.119950] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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13
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Kozyatnyk I, Oesterle P, Wurzer C, Mašek O, Jansson S. Removal of contaminants of emerging concern from multicomponent systems using carbon dioxide activated biochar from lignocellulosic feedstocks. BIORESOURCE TECHNOLOGY 2021; 340:125561. [PMID: 34332442 DOI: 10.1016/j.biortech.2021.125561] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/08/2021] [Accepted: 07/10/2021] [Indexed: 06/13/2023]
Abstract
Adsorption of six contaminants of emerging concern (CECs) - caffeine, chloramphenicol, carbamazepine, bisphenol A, diclofenac, and triclosan - from a multicomponent solution was studied using activated biochars obtained from three lignocellulosic feedstocks: wheat straw, softwood, and peach stones. Structural parameters related to the porosity and ash content of activated biochar and the hydrophobic properties of the CECs were found to influence the adsorption efficiency. For straw and softwood biochar, activation resulted in a more developed mesoporosity, whereas activation of peach stone biochar increased only the microporosity. The most hydrophilic CECs studied, caffeine and chloramphenicol, displayed the highest adsorption (22.8 and 11.3 mg g-1) onto activated wheat straw biochar which had the highest ash content of the studied adsorbents (20 wt%). Adsorption of bisphenol A and triclosan, both relatively hydrophobic substances, was highest (31.6 and 30.2 mg g-1) onto activated biochar from softwood, which displayed a well-developed mesoporosity and low ash content.
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Affiliation(s)
- Ivan Kozyatnyk
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
| | - Pierre Oesterle
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
| | - Christian Wurzer
- UK Biochar Research Centre, School of GeoSciences, University of Edinburgh, EH9 3FF Edinburgh, UK
| | - Ondřej Mašek
- UK Biochar Research Centre, School of GeoSciences, University of Edinburgh, EH9 3FF Edinburgh, UK
| | - Stina Jansson
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden.
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14
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A Review on the Removal of Carbamazepine from Aqueous Solution by Using Activated Carbon and Biochar. SUSTAINABILITY 2021. [DOI: 10.3390/su132111760] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Carbamazepine (CBZ), one of the most used pharmaceuticals worldwide and a Contaminant of Emerging Concern, represents a potential risk for the environment and human health. Wastewater treatment plants (WWTPs) are a significant source of CBZ to the environment, polluting the whole water cycle. In this review, the CBZ presence and fate in the urban water cycle are addressed, with a focus on adsorption as a possible solution for its removal. Specifically, the scientific literature on CBZ removal by activated carbon and its possible substitute Biochar, is comprehensively scanned and summed up, in view of increasing the circularity in water treatments. CBZ adsorption onto activated carbon and biochar is analyzed considering several aspects, such as physicochemical characteristics of the adsorbents, operational conditions of the adsorption processes and adsorption kinetics and isotherms models. WWTPs usually show almost no removal of CBZ (even negative), whereas removal is witnessed in drinking water treatment plants through advanced treatments (even >90%). Among these, adsorption is considered one of the preferable methods, being economical and easier to operate. Adsorption capacity of CBZ is influenced by the characteristics of the adsorbent precursors, pyrolysis temperature and modification or activation processes. Among operational conditions, pH shows low influence on the process, as CBZ has no charge in most pH ranges. Differently, increasing temperature and rotational speed favor the adsorption of CBZ. The presence of other micro-contaminants and organic matter decreases the CBZ adsorption due to competition effects. These results, however, concern mainly laboratory-scale studies, hence, full-scale investigations are recommended to take into account the complexity of the real conditions.
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Zhu Y, Wang X, Li Z, Fan Y, Zhang X, Chen J, Zhang Y, Dong C, Zhu Y. Husbandry waste derived coralline-like composite biomass material for efficient heavy metal ions removal. BIORESOURCE TECHNOLOGY 2021; 337:125408. [PMID: 34153864 DOI: 10.1016/j.biortech.2021.125408] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/08/2021] [Accepted: 06/09/2021] [Indexed: 06/13/2023]
Abstract
The resource utilization of biological solid waste is crucial for practical environmental remediation. By comprehensively utilizing LiBr treatment and dopamine chemistry, herein the cow dung waste was successfully converted into the composite biomass material for efficient heavy metal ions removal. A selective etching mechanism of cellulose was discovered in the LiBr treatment process, achieving the large-scale preparation of coralline-like porous biomass material with hundred times increased specific surface. Benefiting from the co-deposition of polyethyleneimine and Fe3O4, the fabricated material showed significantly higher adsorption capacity (183.82 and 231.48 mg·g-1 for Cu2+ and Cd2+) than that of raw cow dung (0.95 and 1.25 mg·g-1 for Cu2+ and Cd2+). Furthermore, this composite biomass adsorbent also exhibited rapid adsorption equilibrium, magnetic separation capability, monolayer chemisorption feature and feasible recycling use. Collectively, this work contributes to both the resource utilization of husbandry solid waste and the development of advanced biomass adsorbent.
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Affiliation(s)
- Yanchen Zhu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China; School of Light Industry and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Xin Wang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China; School of Light Industry and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China.
| | - Zilong Li
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China; School of Light Industry and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Yunxiang Fan
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China; School of Light Industry and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Xujing Zhang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China; School of Light Industry and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Jian Chen
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China; School of Light Industry and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Yali Zhang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China; School of Light Industry and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Cuihua Dong
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China; School of Light Industry and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Ying Zhu
- Advanced Materials Institute, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250014, PR China
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