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Kachhadiya K, Patel D, Vijaybhai GJ, Raghuvanshi P, Surya DV, Dharaskar S, Kumar GP, Reddy BR, Remya N, Kumar TH, Basak T. Conversion of waste polystyrene into valuable aromatic hydrocarbons via microwave-assisted pyrolysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:57509-57522. [PMID: 37365360 DOI: 10.1007/s11356-023-28294-2] [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: 02/03/2023] [Accepted: 06/12/2023] [Indexed: 06/28/2023]
Abstract
The prime objective of the current research work was to understand the role of microwave-assisted pyrolysis for the upgradation of expanded polystyrene (EPS) waste into valuable aromatic hydrocarbons. Ethyl acetate solvent was used to dissolve the EPS to enhance the homogeneous dispersion of EPS with susceptor particles. Biochar obtained from the pyrolysis was used as a susceptor. The design of experiments method was used to understand the role of microwave power (300 W, 450 W, and 600 W) and susceptor quantity (5 g, 10 g, and 15 g) in the pyrolysis process. The pyrolysis was conducted till the temperature reached up to 600 °C, and this temperature was achieved in the time interval of 14-38 min based on the experimental conditions. The obtained average heating rates varied in the range of 15 to 41 °C/min to attain the pyrolysis temperature. The EPS feed was converted into char (~ 2.5 wt.%), oil (51 to 60 wt.%), and gaseous (37 to 47 wt.%) products. The specific microwave energy (J/g) was calculated to know the energy requirement; it increased with an increase in susceptor quantity and microwave power, whereas specific microwave power (W/g) was a function of microwave power and increased from 15 to 30 W/g. The predicted values calculated using the model equations closely matched the actual values showing that the developed model equations via optimization had a good fit. The obtained pyrolysis oil physicochemical properties including viscosity (1 to 1.4 cP), density (990 to 1030 kg/m3), heating value (39 to 42 MJ/kg), and flash point (98 to 101 °C) were thoroughly analyzed. The pyrolysis oil was rich in aromatic hydrocarbons and it was predominantly composed of styrene, cyclopropyl methylbenzene, and alkylbenzene derivates.
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Affiliation(s)
- Kevin Kachhadiya
- Department of Chemical Engineering, Pandit Deendayal Energy University, Gandhinagar, 382426, India
| | - Dhruv Patel
- Department of Chemical Engineering, Pandit Deendayal Energy University, Gandhinagar, 382426, India
| | - Gajera Jalpa Vijaybhai
- Department of Chemical Engineering, Pandit Deendayal Energy University, Gandhinagar, 382426, India
| | - Payal Raghuvanshi
- Department of Chemical Engineering, Pandit Deendayal Energy University, Gandhinagar, 382426, India
| | - Dadi Venkata Surya
- Department of Chemical Engineering, Pandit Deendayal Energy University, Gandhinagar, 382426, India.
| | - Swapnil Dharaskar
- Department of Chemical Engineering, Pandit Deendayal Energy University, Gandhinagar, 382426, India
| | - Gurrala Pavan Kumar
- Department of Mechanical Engineering, Pandit Deendayal Energy University, Gandhinagar, 382426, India
| | - Busigari Rajasekhar Reddy
- Department of Fuel, Mineral and Metallurgical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India
| | - Neelancherry Remya
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, Bhubaneswar, 752050, India
| | - Tanneru Hemanth Kumar
- Department of Chemical Engineering, Indian Institute of Petroleum Energy, Visakhapatnam, 530003, India
| | - Tanmay Basak
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai, 600036, India
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Palla S, Surya DV, Pritam K, Puppala H, Basak T, Palla VCS. A critical review on the influence of operating parameters and feedstock characteristics on microwave pyrolysis of biomass. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:57570-57593. [PMID: 38888826 DOI: 10.1007/s11356-024-33607-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 05/04/2024] [Indexed: 06/20/2024]
Abstract
Biomass pyrolysis is the most effective process to convert abundant organic matter into value-added products that could be an alternative to depleting fossil fuels. A comprehensive understanding of the biomass pyrolysis is essential in designing the experiments. However, pyrolysis is a complex process dependent on multiple feedstock characteristics, such as biomass consisting of volatile matter, moisture content, fixed carbon, and ash content, all of which can influence yield formation. On top of that, product composition can also be affected by the particle size, shape, susceptors used, and pre-treatment conditions of the feedstock. Compared to conventional pyrolysis, microwave-assisted pyrolysis (MAP) is a novel thermochemical process that improves internal heat transfer. MAP experiments complicate the operation due to additional governing factors (i.e. operating parameters) such as heating rate, temperature, and microwave power. In most instances, a single parameter or the interaction of parameters, i.e. the influence of other parameter integration, plays a crucial role in pyrolysis. Although various studies on a few operating parameters or feedstock characteristics have been discussed in the literature, a comprehensive review still needs to be provided. Consequently, this review paper deconstructed biomass and its sources, including microwave-assisted pyrolysis, and discussed the impact of operating parameters and biomass properties on pyrolysis products. This paper addresses the challenge of handling multivariate problems in MAP and delivers solutions by application of the machine learning technique to minimise experimental effort. Techno-economic analysis of the biomass pyrolysis process and suggestions for future research are also discussed.
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Affiliation(s)
- Sridhar Palla
- Department of Chemical Engineering, Indian Institute of Petroleum and Energy Visakhapatnam, Visakhapatnam, Andhra Pradesh, 530003, India
| | - Dadi Venkata Surya
- Department of Chemical Engineering, Pandit Deendayal Energy University, Gandhinagar, 382426, India.
| | - Kocherlakota Pritam
- Department of Mathematics, Pandit Deendayal Energy University, Gandhinagar, 382426, India
| | - Harish Puppala
- 1Department of Civil Engineering, SRM University AP, Mangalagiri, Andhra Pradesh, 522502, India
| | - Tanmay Basak
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Venkata Chandra Sekhar Palla
- Materials Resource Efficiency Division (MRED), CSIR-Indian Institute of Petroleum (IIP), Dehradun, 248005, India
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Minaei S, Zoroufchi Benis K, McPhedran KN, Soltan J. Adsorption of sulfamethoxazole and lincomycin from single and binary aqueous systems using acid-modified biochar from activated sludge biomass. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 358:120742. [PMID: 38593733 DOI: 10.1016/j.jenvman.2024.120742] [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: 10/13/2023] [Revised: 03/10/2024] [Accepted: 03/19/2024] [Indexed: 04/11/2024]
Abstract
The extensive use of pharmaceuticals has raised growing concerns regarding their presence in surface waters. High concentrations of sulfamethoxazole (SMX) and lincomycin (LIN), as commonly prescribed antibiotics, persist in various wastewaters and surface waters, posing risks to public health and the environment. Biochar derived from accessible biowaste, like activated sludge biomass, offers a sustainable and eco-friendly solution to mitigate antibiotic release into water systems. This study investigates the effectiveness of H3PO4-modified activated sludge-based biochar (PBC) synthesized through microwave (MW) heating for the adsorption of SMX and LIN antibiotics. The synthesis parameters of PBC were optimized using a central composite design considering MW power, time, and H3PO4 concentration. Characterization results validate the efficacy of the synthesis process creating a specific surface area of 365 m2/g, and well-developed porosity with abundant oxygen-containing functional groups. Batch and dynamic adsorption experiments were piloted to assess the adsorption performance of PBC in single and binary antibiotic systems. Results show that PBC exhibits a higher affinity for SMX rather than LIN, with maximum adsorption capacities of 45.6 mg/g and 26.6 mg/g, respectively. Based on kinetic studies chemisorption is suggested as the primary mechanism for SMX and LIN removal. Equilibrium studies show a strong agreement with the Redlich-Peterson isotherm, suggesting a composite adsorption mechanism with a greater probability of multilayer adsorption for both antibiotics. Hydrogen bonding and π-π electron sharing are suggested as the prevailing adsorption mechanisms of SMX and LIN on the modified biochar. Furthermore, a dynamic adsorption system was replicated using a fixed bed column setup, demonstrating effective removal of SMX and LIN from pure water and real wastewater samples using PBC-loaded hydrogel beads (PBC-B). These findings serve as crucial support for upcoming studies concerning the realistic application of sludge-based biochar in the removal of antibiotics from water systems.
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Affiliation(s)
- Shahab Minaei
- Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Khaled Zoroufchi Benis
- Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada; Global Institute for Water Security, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Kerry N McPhedran
- Department of Civil, Geological & Environmental Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada; Global Institute for Water Security, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
| | - Jafar Soltan
- Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada; Global Institute for Water Security, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Oh DY, Kim D, Park KY. A comprehensive comparative study on microwave- assisted pyrolysis products derived from raw and digested organic waste, with emphasis on sewage sludge, food waste, and livestock manure. Heliyon 2024; 10:e29618. [PMID: 38699720 PMCID: PMC11063431 DOI: 10.1016/j.heliyon.2024.e29618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/21/2024] [Accepted: 04/10/2024] [Indexed: 05/05/2024] Open
Abstract
This study focused on characterizing sewage sludge, food waste, and livestock manure, representative of continuously generated organic wastes, along with their anaerobic digestion residues. Microwave assisted pyrolysis was employed to investigate the relationship between the properties of the raw organic wastes and the resulting pyrolysis products, utilizing the R-program for analysis. Evaluation of the pyrolysis products of these six organic wastes revealed that char yield was primarily influenced by ash and fixed carbon contents, with higher yields observed in residues from anaerobic digestion compared to the original organic waste. Liquid and gaseous product quantities were found to increase with volatile content, while high-fat content within the volatile fraction notably enhanced liquid product yields, impacting syngas production. Analysis of syngas composition indicated a negative correlation between high nitrogen content in the feedstock and H2 generation. Furthermore, examining the correlation between chemical properties of organic waste and pyrolysis products revealed a proportional increase in protein components with nitrogen content, suggesting potential improvements in pyrolysis efficiency through raw material pretreatment enhancements by the R program.
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Affiliation(s)
- Doo Young Oh
- Department of Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Daegi Kim
- Department of Environmental Engineering, Mokpo National University, 1666, Yeongsan-ro, Cheonggye-myeon, Muan-gun, Jeollanam-do, 58554, Republic of Korea
| | - Ki Young Park
- Department of Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
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Velvizhi G, Jacqueline PJ, Shetti NP, K L, Mohanakrishna G, Aminabhavi TM. Emerging trends and advances in valorization of lignocellulosic biomass to biofuels. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 345:118527. [PMID: 37429092 DOI: 10.1016/j.jenvman.2023.118527] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/25/2023] [Accepted: 06/25/2023] [Indexed: 07/12/2023]
Abstract
Sustainable technologies pave the way to address future energy demand by converting lignocellulosic biomass into fuels, carbon-neutral materials, and chemicals which might replace fossil fuels. Thermochemical and biochemical technologies are conventional methods that convert biomass into value-added products. To enhance biofuel production, the existing technologies should be upgraded using advanced processes. In this regard, the present review explores the advanced technologies of thermochemical processes such as plasma technology, hydrothermal treatment, microwave-based processing, microbial-catalyzed electrochemical systems, etc. Advanced biochemical technologies such as synthetic metabolic engineering and genomic engineering have led to the development of an effective strategy to produce biofuels. The microwave-plasma-based technique increases the biofuel conversion efficiency by 97% and the genetic engineering strains increase the sugar production by 40%, inferring that the advanced technologies enhances the efficiency. So understanding these processes leads to low-carbon technologies which can solve the global issues on energy security, the greenhouse gases emission, and global warming.
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Affiliation(s)
- G Velvizhi
- CO(2) Research and Green Technology Centre, Vellore Institute of Technology (VIT), Vellore, 632 014, Tamil Nadu, India.
| | - P Jennita Jacqueline
- CO(2) Research and Green Technology Centre, Vellore Institute of Technology (VIT), Vellore, 632 014, Tamil Nadu, India; School of Chemical Engineering, Vellore Institute of Technology (VIT), Vellore, 632 014, Tamil Nadu, India
| | - Nagaraj P Shetti
- Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, 580 031, Karnataka, India
| | - Latha K
- Department of Mathematics, Easwari Engineering College, Chennai, 600 089, Tamil Nadu, India
| | - Gunda Mohanakrishna
- Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, 580 031, Karnataka, India
| | - Tejraj M Aminabhavi
- Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, 580 031, Karnataka, India; School of Engineering, UPES, Bidholi, Dehradun, Uttarakhand 248 007, India.
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6
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Chormare R, Moradeeya PG, Sahoo TP, Seenuvasan M, Baskar G, Saravaia HT, Kumar MA. Conversion of solid wastes and natural biomass for deciphering the valorization of biochar in pollution abatement: A review on the thermo-chemical processes. CHEMOSPHERE 2023; 339:139760. [PMID: 37567272 DOI: 10.1016/j.chemosphere.2023.139760] [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: 04/02/2023] [Revised: 07/14/2023] [Accepted: 08/05/2023] [Indexed: 08/13/2023]
Abstract
This overview addresses the formation of solid trash and the various forms of waste from a variety of industries, which environmentalists have embraced. The paper investigates the negative effects on the environment caused by unsustainable management of municipal solid trash as well as the opportunities presented by the formal system. This examination looks at the origins of solid waste as well as the typical treatment methods. Pyrolysis methods, feedstock pyrolysis, and lignocellulosic biomass pyrolysis were highlighted. Explain in detail the various thermochemical processes that take place during the pyrolysis of biomass. Due to its carbon content, low cost, accessibility, ubiquitousness, renewable nature, and environmental friendliness, biomass waste is a unique biochar precursor. This study looks at the different types of biomass waste that are available for treating wastewater. This study discussed a wide variety of reactors. Adsorption is the standard method that is used the most frequently to remove hazardous organic, dye, and inorganic pollutants from wastewater. These pollutants cause damage to the environment and water supplies, thus it is important to remove them. Adsorption is both simple and inexpensive to utilize. Temperature-dependent conversions explain the kinetic theories of biomaterial biochemical degradation. This article presents a review that explains how pyrolytic breakdown char materials can be used to reduce pollution and improve environmental management.
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Affiliation(s)
- Rishikesh Chormare
- Process Design and Engineering Cell, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, 364 002, Gujarat, India; Academy of Scientific and Innovative Research, Ghaziabad, 201 002, Uttar Pradesh, India
| | - Pareshkumar G Moradeeya
- Department of Environmental Science and Engineering, Marwadi University, Rajkot, 360 003, Gujarat, India
| | - Tarini Prasad Sahoo
- Academy of Scientific and Innovative Research, Ghaziabad, 201 002, Uttar Pradesh, India; Analytical and Environmental Science Division & Centralized Instrument Facility, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, 364 002, Gujarat, India
| | - Muthulingam Seenuvasan
- Department of Chemical Engineering, Hindusthan College of Engineering and Technology, Coimbatore, 641 032, Tamil Nadu, India
| | - Gurunathan Baskar
- Department of Biotechnology, St. Joseph's College of Engineering, Chennai, 600 119, Tamil Nadu, India
| | - Hitesh T Saravaia
- Academy of Scientific and Innovative Research, Ghaziabad, 201 002, Uttar Pradesh, India; Analytical and Environmental Science Division & Centralized Instrument Facility, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, 364 002, Gujarat, India.
| | - Madhava Anil Kumar
- Centre for Rural and Entrepreneurship Development, National Institute of Technical Teachers Training and Research, Chennai, 600 113, Tamil Nadu, India.
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Al-Etaibi AM, El-Apasery MA. Can Novel Synthetic Disperse Dyes for Polyester Fabric Dyeing Provide Added Value? Polymers (Basel) 2023; 15:polym15081845. [PMID: 37111991 PMCID: PMC10141181 DOI: 10.3390/polym15081845] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/31/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
In this review, we present preparation methods for a series of new disperse dyes that we have synthesized over the past thirteen years in an environmentally safe and economical way using innovative methods, conventional methods, or using microwave technology as a safe and uniform method of heating. The results showed that in many of the synthetic reactions we carried out, the use of the microwave strategy provides us with the product in minutes and with higher productivity compared to the conventional methods. This strategy provides or may dispense with the use of harmful organic solvents. As an environmentally friendly approach, we used microwave technology in dyeing polyester fabrics at 130 degrees Celsius, and then, we also introduced ultrasound technology in dyeing polyester fabrics at 80 degrees Celsius as an alternative to dyeing methods at the boiling point of water. Here, the goal was not only to save energy, but also to obtain a color depth higher than the color depth that can be obtained by traditional dyeing methods. It is worth noting that obtaining a higher color depth and using less energy means that the amount of dye remaining in the dyeing bath is less, which facilitates the processing of dyeing baths and therefore does not cause harm to the environment. It is necessary after obtaining dyed polyester fabrics to show their fastness properties, so we explained that these dyes have high fastness properties. The next thought was to use nano-metal oxides to treat polyester fabrics in order to provide these fabrics with important properties. Therefore, we present the strategy for treating polyester fabrics with titanium dioxide nano-particles (TiO2 NPs) or zinc oxide nano-particles (ZnO NPs) in order to enhance their anti-microbial properties, increase their UV protection, increase their light fastness, and enhance their self-cleaning properties. We reviewed the biological activity of all of the newly prepared dyes and showed that most of these dyes possess strong biological activity.
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Affiliation(s)
- Alya M Al-Etaibi
- Natural Science Department, College of Health Science, Public Authority for Applied Education and Training, Fayha 72853, Kuwait
| | - Morsy Ahmed El-Apasery
- Dyeing, Printing and Textile Auxiliaries Department, Textile Research and Technology Institute, National Research Centre, 33 El Buhouth St., Dokki, Cairo 12622, Egypt
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Oh DY, Kim D, Choi H, Park KY. Syngas generation from different types of sewage sludge using microwave-assisted pyrolysis with silicon carbide as the absorbent. Heliyon 2023; 9:e14165. [PMID: 36923894 PMCID: PMC10009543 DOI: 10.1016/j.heliyon.2023.e14165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 02/21/2023] [Accepted: 02/23/2023] [Indexed: 03/05/2023] Open
Abstract
In this study, the pyrolysis of sewage sludge was explored through microwave-assisted pyrolysis. Three kinds of sludge (primary sludge, waste-activated sludge, and digested sludge) from a sewage treatment process were used. All three kinds of sewage sludge had a low microwave absorption capacity; therefore, an absorber was added to enable microwave-assisted pyrolysis. By using silicon carbide as the heating element, it was possible to increase the temperature within a short time by applying microwaves. During the microwave-assisted pyrolysis of sewage sludges, the amount of gas generated and the H2 and CO fraction of the produced gas increased as temperature increased. The pyrolysis of waste-activated sludge produced the greatest quantity of gas. However, the primary sludge produced the highest amount of syngas in terms of H2 and CO, which indicate the high-quality of the syngas.
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Affiliation(s)
- Doo Young Oh
- Department of Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Daegi Kim
- Department of Environmental Technology Engineering, Daegu University, 201 Daegudae-ro, Jillyang-eup, Gyeongsan-si, Gyeongsangbuk-do 38453, Republic of Korea
| | - Hanna Choi
- Taeyoung E&C, 111 Yeouigongwon-ro, Yeongdeungpo-gu, Seoul 07241, Republic of Korea
| | - Ki Young Park
- Department of Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
- Corresponding author.
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9
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Zhang H, Tian B, Yan X, Bai Y, Gao J, Li X, Xie Q, Yang Y, Li YW. Copyrolysis of Waste Cartons and Polyolefin Plastics under Microwave Heating and Characterization of the Products. ACS OMEGA 2023; 8:7331-7343. [PMID: 36873028 PMCID: PMC9979345 DOI: 10.1021/acsomega.2c05045] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 01/05/2023] [Indexed: 06/18/2023]
Abstract
Municipal organic solid waste contains many recoverable resources, including biomass materials and plastics. The high oxygen content and strong acidity of bio-oil limit its application in the energy field, and the oil quality is mainly improved by copyrolysis of biomass with plastics. Therefore, in this paper, a copyrolysis method was utilized to treat solid waste, namely, common waste cartons and waste plastic bottles (polypropylene (PP) and polyethylene (PE)) as raw materials. The products were analyzed by Fourier transform infrared (FT-IR) spectroscopy, elemental analysis, GC, and GC/MS to investigate the reaction pattern of the copyrolysis. The results show that the addition of plastics can reduce the residue content by about 3%, and the copyrolysis at 450 °C can increase the liquid yield by 3.78%. Compared with single waste carton pyrolysis, no new product appeared in the copyrolysis liquid products but the oxygen content of the liquid decreased from 65% to less than 8%. The content of CO2 and CO in the copyrolysis gas product is 5-15% higher than the theoretical value; the O content of the solid products increased by about 5%. This indicates that waste plastics can promote the formation of l-glucose and small molecules aldehydes and ketones by providing H radicals and reduce the oxygen content in liquids. Thus, copyrolysis improves the reaction depth and product quality of waste cartons, which provides a certain theoretical reference for the industrial application of solid waste copyrolysis.
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Sardi B, Uno I, Pasila F, Altway A, Mahfud M. Low rank coal for fuel production via microwave-assisted pyrolysis: A review. FIREPHYSCHEM 2023. [DOI: 10.1016/j.fpc.2023.02.002] [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] Open
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11
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Basak B, Kumar R, Bharadwaj AVSLS, Kim TH, Kim JR, Jang M, Oh SE, Roh HS, Jeon BH. Advances in physicochemical pretreatment strategies for lignocellulose biomass and their effectiveness in bioconversion for biofuel production. BIORESOURCE TECHNOLOGY 2023; 369:128413. [PMID: 36462762 DOI: 10.1016/j.biortech.2022.128413] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
The inherent recalcitrance of lignocellulosic biomass is a significant barrier to efficient lignocellulosic biorefinery owing to its complex structure and the presence of inhibitory components, primarily lignin. Efficient biomass pretreatment strategies are crucial for fragmentation of lignocellulosic biocomponents, increasing the surface area and solubility of cellulose fibers, and removing or extracting lignin. Conventional pretreatment methods have several disadvantages, such as high operational costs, equipment corrosion, and the generation of toxic byproducts and effluents. In recent years, many emerging single-step, multi-step, and/or combined physicochemical pretreatment regimes have been developed, which are simpler in operation, more economical, and environmentally friendly. Furthermore, many of these combined physicochemical methods improve biomass bioaccessibility and effectively fractionate ∼96 % of lignocellulosic biocomponents into cellulose, hemicellulose, and lignin, thereby allowing for highly efficient lignocellulose bioconversion. This review critically discusses the emerging physicochemical pretreatment methods for efficient lignocellulose bioconversion for biofuel production to address the global energy crisis.
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Affiliation(s)
- Bikram Basak
- Department of Earth Resources & Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea; Petroleum and Mineral Research Institute, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Ramesh Kumar
- Department of Earth Resources & Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - A V S L Sai Bharadwaj
- Department of Materials Science and Chemical Engineering, Hanyang University ERICA Campus, Ansan, Gyeonggi-do 15588, Republic of Korea
| | - Tae Hyun Kim
- Department of Materials Science and Chemical Engineering, Hanyang University ERICA Campus, Ansan, Gyeonggi-do 15588, Republic of Korea
| | - Jung Rae Kim
- School of Chemical Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Min Jang
- Department of Environmental Engineering, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Sang-Eun Oh
- Department of Biological Environment, Kangwon National University, 192-1 Hyoja-dong, Gangwon-do, Chuncheon-si 200-701, Republic of Korea
| | - Hyun-Seog Roh
- Department of Environmental and Energy Engineering, Yonsei University, 1 Yonseidae-gil, Wonju, Gangwon 26493, Republic of Korea
| | - Byong-Hun Jeon
- Department of Earth Resources & Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
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Huang YF, Chiueh PT, Lo SL. Carbon capture of biochar produced by microwave co-pyrolysis: adsorption capacity, kinetics, and benefits. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:22211-22221. [PMID: 36280634 DOI: 10.1007/s11356-022-23734-x] [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: 07/20/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
Microwave co-pyrolysis of sewage sludge and leucaena wood was conducted to produce biochar as an adsorbent for CO2 capture. Both microwave power level and blending ratio were crucial factors affecting the CO2 adsorption capacity of biochar. At a power level of 150 W, the biochar produced by microwave co-pyrolysis of 25% sewage sludge and 75% leucaena wood possessed the highest CO2 adsorption capacity. When the biochar was produced at 100 W, its CO2 adsorption capacity was higher than predicted. Based on the proximate and elemental compositions of biochar, two equations were obtained to predict CO2 adsorption capacity. The proximate composition of biochar can provide more precise prediction of CO2 adsorption capacity than elemental composition according to the higher R2 value provided. The blending ratio of 50% would be most appropriate to produce the biochar with acceptable reduction in CO2 adsorption capacity and loss of quantity. The pseudo-second-order model would be most suitable for simulating the kinetic of CO2 adsorption. The biochar produced from 1 metric tonne of sewage sludge and leucaena wood can offset carbon tax by 83 US dollars. Based on experimental results and findings, microwave co-pyrolysis should be a feasible technique to produce biochar possessing high CO2 adsorption capacity.
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Affiliation(s)
- Yu-Fong Huang
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan, Republic of China
| | - Pei-Te Chiueh
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan, Republic of China
- Water Innovation, Low Carbon and Environmental Sustainability Research Center, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan, Republic of China
| | - Shang-Lien Lo
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan, Republic of China.
- Water Innovation, Low Carbon and Environmental Sustainability Research Center, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan, Republic of China.
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Suriapparao DV, Tanneru HK, Reddy BR. A review on the role of susceptors in the recovery of valuable renewable carbon products from microwave-assisted pyrolysis of lignocellulosic and algal biomasses: Prospects and challenges. ENVIRONMENTAL RESEARCH 2022; 215:114378. [PMID: 36150436 DOI: 10.1016/j.envres.2022.114378] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 09/10/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Sustainable bio-economics can be achieved by the processing of renewable biomass resources. Hence, this review article presents a detailed analysis of the effect of susceptors on microwave-assisted pyrolysis (MAP) of biomass. Biomass is categorized as lignocellulosic and algal biomass based on available sources. Selected seminal works reporting the MAP of pure biomasses are reviewed thoroughly. Focus is given to understanding the role of the susceptor used for pyrolysis on the characteristics of products produced. The goal is to curate the literature and report variation in the product characteristics for the combinations of the biomass and susceptor. The review explores the factors such as the susceptor to feed-stock ratio and its implications on the product compositions. The process parameters including microwave power, reaction temperature, heating rate, feedstock composition, and product formation are discussed in detail. A repository of such information would enable researchers to glance through the closest possible susceptors they should use for a chosen biomass of their interest for better oil yields. Further, a list of potential applications of MAP products of biomasses, along with the susceptor used, are reported. To this end, this review presents the possible opportunities and challenges for tapping valuable carbon resources from the MAP of biomass for sustainable energy needs.
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Affiliation(s)
- Dadi V Suriapparao
- Department of Chemical Engineering, Pandit Deendayal Energy University, Gandhinagar, 382426, India.
| | - Hemanth Kumar Tanneru
- Department of Chemical Engineering, Indian Institute of Petroleum and Energy Visakhapatnam, Visakhapatnam, Andhra Pradesh, 530003, India
| | - Busigari Rajasekhar Reddy
- Department of Fuel, Mineral and Metallurgical Engineering, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad, 826004, India
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14
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Facile Synthesis of Novel Disperse Dyes for Dyeing Polyester Fabrics: Demonstrating Their Potential Biological Activities. Polymers (Basel) 2022; 14:polym14193966. [PMID: 36235912 PMCID: PMC9571010 DOI: 10.3390/polym14193966] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 09/15/2022] [Accepted: 09/16/2022] [Indexed: 11/16/2022] Open
Abstract
Original work showed the composition of the dyes and the antimicrobial/UV protective properties of a series of dyes obtained in our laboratories over the past twelve years in an easy way using microwave technology and their comparisons with conventional methods. The results we obtained clearly indicated that by using the microwave strategy, we were able to synthesize the new disperse dyes in minutes and with a much higher productivity when compared to the traditional methods, which took a much longer time, sometimes up to hours. We also introduced ultrasonic technology in dyeing polyester fabrics at 80 °C for an environmentally friendly approach, which was an alternative to traditional dyeing methods at 100 °C; we obtained a much higher color depth than traditional dyeing methods reaching 102.9%. We presented both the biological activity of the prepared new dyes and the fastness properties and clearly indicated that these dyes possess biological activity and high fastness properties.We presented through the results that when dyeing polyester fabrics with some selected disperse dyes, the color strength of polyester fabrics dyed at high temperatures was greater than the color strength of polyester fabrics dyed at low temperatures by 144%, 186%, 265% and 309%. Finally, we presented that a ZnO or TiO2 NPs post-dyeing treatment of polyester fabrics is promising strategy for producing polyester fabrics possess multifunction like self-cleaning property, high light fastness, antimicrobial and anti-ultraviolet properties.
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15
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Lee H, Papari S, Bernardini G, Ciuffi B, Rosi L, Berruti F. Value‐added products from waste: Slow pyrolysis of used polyethylene‐lined paper coffee cup waste. CAN J CHEM ENG 2022. [DOI: 10.1002/cjce.24472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Heejin Lee
- Institute for Chemicals and Fuels from Alternative Resources, Faculty of Engineering Western University London Ontario Canada
| | - Sadegh Papari
- Institute for Chemicals and Fuels from Alternative Resources, Faculty of Engineering Western University London Ontario Canada
| | - Giulio Bernardini
- Department of Chemistry “Ugo Schiff”, Università di Firenze Firenze Italy
| | - Benedetta Ciuffi
- Department of Chemistry “Ugo Schiff”, Università di Firenze Firenze Italy
| | - Luca Rosi
- Department of Chemistry “Ugo Schiff”, Università di Firenze Firenze Italy
| | - Franco Berruti
- Institute for Chemicals and Fuels from Alternative Resources, Faculty of Engineering Western University London Ontario Canada
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16
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Al-Etaibi AM, El-Apasery MA. Microwave-Assisted Synthesis of Azo Disperse Dyes for Dyeing Polyester Fabrics: Our Contributions over the Past Decade. Polymers (Basel) 2022; 14:1703. [PMID: 35566872 PMCID: PMC9105068 DOI: 10.3390/polym14091703] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/16/2022] [Accepted: 04/17/2022] [Indexed: 11/16/2022] Open
Abstract
Organic reactions utilizing the microwave strategy have become able to conduct in shorter times, with higher yields, and are compatible with green chemistry protocols. In recent years, microwave technologies as an effective agent in organic synthesis have been successful utilized in textile industries and for the synthesis of dyes, especially disperse dyes. Herein, we present our contributions over the past decade through the use of microwave technology not only in the synthesis of new biologically active organic compounds and disperse dyes, but also the use of this effective, environmentally friendly technology in dyeing polyester fabrics as an alternative to conventional heating methods. We also demonstrate both the fastness properties and biological activities of the newly prepared compounds. In addition, we present the treatment of dyeing baths by reusing them again in the dyeing process, using microwave energy to achieve this goal, and this has environmentally friendly dimensions. Some of the possible utilizations of microwave irradiation have been presented in many different fields of chemistry. We recommend relying on this effective and environmentally safe technology instead of relying on conventional methods that take a lot of time, give low yields, and may have a negative impact on the environment.
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Affiliation(s)
- Alya M. Al-Etaibi
- Natural Science Department, College of Health Science, Public Authority for Applied Education and Training, Fayha 72853, Kuwait
| | - Morsy Ahmed El-Apasery
- Dyeing, Printing and Textile Auxiliaries Department, Textile Research and Technology Institute, National Research Centre, 33 El Buhouth St., Dokki, Cairo 12622, Egypt;
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17
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Yu H, Qu J, Liu Y, Yun H, Li X, Zhou C, Jin Y, Zhang C, Dai J, Bi X. Co-pyrolysis of biomass and polyvinyl chloride under microwave irradiation: Distribution of chlorine. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150903. [PMID: 34653460 DOI: 10.1016/j.scitotenv.2021.150903] [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: 07/28/2021] [Revised: 09/26/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
Co-pyrolysis of sophora wood (SW) and polyvinyl chloride (PVC) was conducted in a microwave reactor at different temperatures and different mixing ratios, and the transformation and distribution of chlorine in pyrolysis products were investigated. Microwave pyrolysis is a simple and efficient technique with better heating uniformity and process controllability than conventional heating. Compared with PVC pyrolysis, the addition of SW significantly reduced CO2 yield and greatly increased the yield of CO. The yield and quality of pyrolysis oil were effectively improved by SW, and the content of chlorine-containing compounds in the oil was suppressed to <1% at low temperatures (<550 °C). Co-pyrolysis of SW and PVC reduced the chlorine emissions from 59.07% to 28.09% and promoted the retention of chlorine in char (from 0.33% to 4.72%). Cellulose, hemicellulose, and lignin were co-pyrolyzed with PVC to investigate their effects on chlorine distribution. The experiments demonstrated that lignin had the most significant effects on reducing gas phase chlorine emission and achieving chlorine immobilization, and chlorine mainly existed in the form of sodium chloride in the char of lignin-PVC co-pyrolysis. Hence co-pyrolysis of lignocellulosic biomass and PVC provides a practical pathway for utilization of PVC waste in an environmentally friendly manner, realizing efficient chlorine retention and significantly reducing chlorine-related emissions.
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Affiliation(s)
- Hejie Yu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Junshen Qu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yang Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Huimin Yun
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiangtong Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Chunbao Zhou
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yajie Jin
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Changfa Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianjun Dai
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Xiaotao Bi
- Clean Energy Research Centre, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada.
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18
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Kustov LM, Kustov AL, Salmi T. Processing of lignocellulosic polymer wastes using microwave irradiation. MENDELEEV COMMUNICATIONS 2022. [DOI: 10.1016/j.mencom.2022.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Sherief N, Anand M, Ramachandran M, Vidhya P. A Review on Various Biofuels and its Applications. 1 2022; 8:1-9. [DOI: 10.46632/jemm/8/1/1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Biofuels derived from biofuels, plant or algae or animal wastes. Unlike fossil fuels such as petroleum, coal and natural gas, refilled immediately. Biofuels are fuels made from recently harvested plants. They act like fossil fuels: they burn when ignited, releasing energy that can be converted into kinetic energy in a car, or heat a home. Biofuels can
be obtained from a variety of crops and from a wide range of plant products from other industries. Not only is biodiesel stable, it is also a highly environmentally friendly, clean burning option that can be used without modification in diesel engines. In fact, biodiesel reduces greenhouse gas emissions by 56% to 86%, which means that the use of biodiesel has already reduced carbon emissions by 75.5 million metric tons. Many countries promote the use of biodiesel. In 2001, global biodiesel consumption was approximately 0.3 billion gallons. Based on the raw material, biofuels are divided
into four groups: third, fourth (FGBs), first biodiesel, which is the only is a locally produced, clean-burning, renewable alternative to petroleum diesel. The use of biodiesel as a vehicle fuel enhances energy conservation, improves air quality and the environment, and provides safety benefits. Biofuels are transport fuels such as ethanol and biomass based diesel fuels. These fuels are usually blended with petroleum fuels (petrol and distillation / diesel fuel and heating oil), but can also be used on their own. Scientists have found that, in practice, biofuels produced from agricultural crops
cause less pollution and greenhouse gas emissions than conventional fossil fuels, causing some environmental problems. Biofuels can also affect the poor. Various problems arise due to high prices for crops. It can go from improved water quality to creating new jobs in economically backward areas. Some applications of bioenergy require a feed based on residues from dedicated field production (such as energy crops) or agricultural production. However, many plant species grown for biofuels release higher levels of the ozone precursor isoprene than conventional crops and plants. Excess ozone poses a well-documented risk to human health, with 22,000 premature deaths each year linked to ground ozone exposure in Europe.
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Affiliation(s)
- Nisha Sherief
- Department of Mechanbical Engineering, Jyothi Engineering College, Thrissur, India
| | - M Anand
- R&D Division, Institute for Science, Engineering and Technology Research, India
| | - M Ramachandran
- REST LABS, Kaveripattinam, Krishnagiri, Tamil Nadu, India
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20
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Hameed HN, raja shahruzzaman RMH, Arifin NA, Tan ES, ALI SALMIATONBINTI, Shamsuddin AH. Catalytic Co-Pyrolysis of Blended Biomass - Plastic Mixture Using Synthesized Metal Oxide(Mo)-Dolomite Based Catalyst. SSRN ELECTRONIC JOURNAL 2022. [DOI: 10.2139/ssrn.4137898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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21
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Charitopoulou MA, Kalogiannis KG, Lappas AA, Achilias DS. Novel trends in the thermo-chemical recycling of plastics from WEEE containing brominated flame retardants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:59190-59213. [PMID: 32638300 DOI: 10.1007/s11356-020-09932-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 06/29/2020] [Indexed: 05/28/2023]
Abstract
The amount of plastics from waste electric and electronic equipment (WEEE) has enormously increased nowadays, due to the rapid expansion and consumption of electronic devices and their short lifespan. This, in combination with their non-biodegradability, led to the need to explore environmentally friendly solutions for their safe disposal. One main obstacle when recycling plastics from WEEE is that they usually comprise harmful additives such as brominated flame retardants (BFRs) that need to be removed before or during their recycling. This paper reviews existing techniques for the recycling of plastics from WEEE and focuses specifically on the advantages, disadvantages, and challenges of pyrolysis as an environmentally friendly method for the production of value-added materials (monomers, hydrocarbons, phenols, etc.). Current technological trends available for the recycling of plastics containing brominated flame retardants are reviewed in an attempt to provide insights for future research on the sustainable management of plastics from WEEE. Emphasis is given on conventional pyrolysis, where a pretreatment step for the debromination of products is applied. This is required since brominated compounds treated at high temperatures may result in the production of harmful to health compounds such as dioxins. All current pretreatment methods (solvent extraction, supercritical fluid technology, etc.) are presented and compared in detail. Co-pyrolysis is also investigated, as it seems to be a very interesting approach, since no catalysts or solvents are used, and at the same time, more plastic wastes can be consumed as feedstock. Furthermore, catalytic pyrolysis along with key parameters, such as the type of the catalyst or pyrolysis temperature, are fully analyzed. Catalysts affect the products' distribution and enhance the removal of bromine from pyrolysis oils. Finally, an emerging technique, that of microwave-assisted pyrolysis, is also highlighted, as it offers many advantages over conventional pyrolysis. Of course, there are some impediments, such as the operational costs or other difficulties as regards the industrial implementation of the mentioned techniques that need to be overcome through future works.
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Affiliation(s)
- Maria Anna Charitopoulou
- Laboratory of Polymers and Dyes Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Konstantinos G Kalogiannis
- Chemical Process and Energy Resources Institute, Centre for Research and Technology Hellas, 57001 Thermi, Thessaloniki, Greece
| | - Angelos A Lappas
- Chemical Process and Energy Resources Institute, Centre for Research and Technology Hellas, 57001 Thermi, Thessaloniki, Greece
| | - Dimitriοs S Achilias
- Laboratory of Polymers and Dyes Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece.
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22
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Assessment of Pre-Treatment Techniques for Coarse Printed Circuit Boards (PCBs) Recycling. MINERALS 2021. [DOI: 10.3390/min11101134] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Waste electrical and electronic equipment or e-waste generation has been skyrocketing over the last decades. This poses waste management and value recovery challenges, especially in developing countries. Printed circuit boards (PCBs) are mainly employed in value recovery operations. Despite the high energy costs of generating crushed and milled particles of the order of several microns, those are employed in conventional hydrometallurgical techniques. Coarse PCB pieces (of order a few centimetres) based value recovery operations are not reported at the industrial scale as the complexities of the internal structure of PCBs limit efficient metal and non-metal separation. Since coarse PCB particles’ pre-treatment is of paramount importance to enhance metal and non-metal separations, thermal, mechanical, chemical and electrical pre-treatment techniques were extensively studied. It is quite evident that a single pre-treatment technique does not result in complete metal liberation and therefore several pre-treatment flowsheets were formulated for coarse PCB particles. Thermal, mechanical and chemical pre-treatments integrated flowsheets were derived and such flowsheets are seldom reported in the e-waste literature. The potential flowsheets need to be assessed considering socio-techno-economic considerations to yield the best available technologies (BAT). In the wider context, the results of this work could be useful for achieving the United Nations sustainable development goals.
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23
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Joo J, Kwon EE, Lee J. Achievements in pyrolysis process in E-waste management sector. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 287:117621. [PMID: 34171724 DOI: 10.1016/j.envpol.2021.117621] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/29/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
Many aspects of modern life of our civilization are associated with using electrical and electronic devices (EEE). Ever-increasing demand for high-performance EEE and accelerated technological development make the replacement of EEE become frequent. This leads to the generation of a tremendous amount of electronic waste (E-waste). Challenges of the management of E-waste have recently arisen out of a dearth of proper technologies to treat E-waste. Pyrolysis process can thermochemically treat waste materials that have a complicated nature and inhomogeneity. This article gives a systematic review as an effort to tackle the challenges in the context of achievements in pyrolysis process in E-waste management sector. Pyrolysis mechanism and types of pyrolysis processes and pyrolysis reactors are first discussed. Various pyrolysis technologies applied to the E-waste treatment are then summarized and compared to each other. Points to be considered for further research and pending challenges of E-waste pyrolysis are also discussed. The pyrolysis treatment of E-waste is not yet fully industrialized mostly because of high costs. However, there should be much room for further developing the E-waste pyrolysis; hence, its industrialization and commercialization is just a matter of time.
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Affiliation(s)
- Junghee Joo
- Department of Energy Systems Research, Ajou University, 206 World Cup-ro, Suwon, 16499, Republic of Korea
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, 209 Neungdong-ro, Seou, 05006, Republic of Korea
| | - Jechan Lee
- Department of Energy Systems Research, Ajou University, 206 World Cup-ro, Suwon, 16499, Republic of Korea; Department of Environmental and Safety Engineering, Ajou University, 206 World Cup-ro, Suwon, 16499, Republic of Korea.
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24
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Progress of the Pyrolyzer Reactors and Advanced Technologies for Biomass Pyrolysis Processing. SUSTAINABILITY 2021. [DOI: 10.3390/su131911061] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In the future, renewable energy technologies will have a significant role in catering to energy security concerns and a safe environment. Among the various renewable energy sources available, biomass has high accessibility and is considered a carbon-neutral source. Pyrolysis technology is a thermo-chemical route for converting biomass to many useful products (biochar, bio-oil, and combustible pyrolysis gases). The composition and relative product yield depend on the pyrolysis technology adopted. The present review paper evaluates various types of biomass pyrolysis. Fast pyrolysis, slow pyrolysis, and advanced pyrolysis techniques concerning different pyrolyzer reactors have been reviewed from the literature and are presented to broaden the scope of its selection and application for future studies and research. Slow pyrolysis can deliver superior ecological welfare because it provides additional bio-char yield using auger and rotary kiln reactors. Fast pyrolysis can produce bio-oil, primarily via bubbling and circulating fluidized bed reactors. Advanced pyrolysis processes have good potential to provide high prosperity for specific applications. The success of pyrolysis depends strongly on the selection of a specific reactor as a pyrolyzer based on the desired product and feedstock specifications.
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25
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Huang YF, Wang SY, Lo SL. Indium recovery from spent liquid crystal displays by using hydrometallurgical methods and microwave pyrolysis. CHEMOSPHERE 2021; 280:130905. [PMID: 34162103 DOI: 10.1016/j.chemosphere.2021.130905] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/11/2021] [Accepted: 05/14/2021] [Indexed: 06/13/2023]
Abstract
Indium recovery from spent liquid crystal displays (LCDs) of monitors was studied by using microwave pyrolysis as a pretreatment step prior to hydrometallurgical processes including acid leaching, solvent extraction, and stripping. After microwave pyrolysis at 150 W for a processing time of 50 min, the hydrometallurgical processes were carried out to sequentially solubilize and increase the purity of indium ions in the product solution. The leaching efficiency of indium was approximately 98% when using 0.5 M of sulfuric acid at a solid-to-liquid ratio (S/L) of 0.1 g/mL. Afterwards, the indium ions in the leachate were extracted by using 20% di(2-ethylhexyl)phosphoric acid (D2EHPA) in kerosene. The purity of indium ions in the organic phase was approximately 87% at an oil-to-aqueous ratio (O/A) of 1/10. Finally, the indium ions in the extract were stripped by using 6 M of hydrochloric acid at an O/A ratio of 10/1. The purity of indium ions in the aqueous phase was as high as 99.98%. The final recovery rate of indium from spent LCDs was approximately 75%, substantially higher than those that were obtained by using shredding or grinding pretreatment. The maximum processing capacity of microwave pyrolysis of spent LCDs could be approximately 500 g, which means that it would only need 0.5 kWh of electricity for the microwave pyrolysis of 1 kg of spent LCDs. According to the experimental results and advantages, it can be concluded that microwave pyrolysis is an effective technique for the pretreatment of spent LCDs.
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Affiliation(s)
- Yu-Fong Huang
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan, ROC
| | - Sheng-Yuan Wang
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan, ROC
| | - Shang-Lien Lo
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan, ROC; Water Innovation, Low Carbon and Environmental Sustainability Research Center, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan, ROC.
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26
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Siwal SS, Chaudhary G, Saini AK, Kaur H, Saini V, Mokhta SK, Chand R, Chandel UK, Christie G, Thakur VK. Key ingredients and recycling strategy of personal protective equipment (PPE): Towards sustainable solution for the COVID-19 like pandemics. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 2021; 9:106284. [PMID: 34485055 PMCID: PMC8404393 DOI: 10.1016/j.jece.2021.106284] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/26/2021] [Accepted: 08/25/2021] [Indexed: 05/24/2023]
Abstract
The COVID-19 pandemic has intensified the complications of plastic trash management and disposal. The current situation of living in fear of transmission of the COVID-19 virus has further transformed our behavioural models, such as regularly using personal protective equipment (PPE) kits and single-use applications for day to day needs etc. It has been estimated that with the passage of the coronavirus epidemic every month, there is expected use of 200 billion pieces of single-use facemasks and gloves. PPE are well established now as life-saving items for medicinal specialists to stay safe through the COVID-19 pandemic. Different processes such as glycolysis, hydrogenation, aminolysis, hydrolysis, pyrolysis, and gasification are now working on finding advanced technologies to transfer waste PPE into value-added products. Here, in this article, we have discussed the recycling strategies of PPE, important components (such as medical gloves, gowns, masks & respirators and other face and eye protection) and the raw materials used in PPE kits. Further, the value addition methods to recycling the PPE kits, chemical & apparatus used in recycling and recycling components into value-added products. Finally, the biorenewable materials in PPE for textiles components have been discussed along with concluded remarks.
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Affiliation(s)
- Samarjeet Singh Siwal
- Department of Chemistry, M.M. Engineering College, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana 133207, India
| | - Gauri Chaudhary
- Department of Chemistry, M.M. Engineering College, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana 133207, India
| | - Adesh Kumar Saini
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana 133207, India
| | - Harjot Kaur
- Department of Chemistry, M.M. Engineering College, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana 133207, India
| | - Vipin Saini
- Department of Pharmacy, Maharishi Markandeshwar University, Kumarhatti, Solan, Himachal Pradesh, 173229, India
| | - Sudesh Kumar Mokhta
- Department of Environment, Science & Technology, Government of Himachal Pradesh, 171001, India
| | - Ramesh Chand
- Department of Health and Family Welfare, Government of Himachal Pradesh, 171001, India
| | - U K Chandel
- Department of surgery, Indira Gandhi Medical College and Hospital (IGMC), Shimla, Himachal Pradesh 171001, India
| | - Graham Christie
- Institute of Biotechnology, Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB2 1QT, UK
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research Center, SRUC, Kings Buildings, Edinburgh EH9 3JG, UK
- Enhanced Composites and Structures Center, School of Aerospace, Transport and Manufacturing, Cranfield University, Bedfordshire MK43 0AL, UK
- Faculty of Materials Science and Applied Chemistry Institute of Polymer Materials, Riga Technical University, P.Valdena 3/7, LV, 1048 Riga, Latvia
- Department of Mechanical Engineering, School of Engineering, Shiv Nadar University, Uttar Pradesh 201314, India
- School of Engineering, University of Petroleum & Energy Studies (UPES), Dehradun, Uttarakhand, India
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27
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Moreira R, Bimbela F, Gil-Lalaguna N, Sánchez JL, Portugal A. Clean syngas production by gasification of lignocellulosic char: State of the art and future prospects. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.05.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Durán-Jiménez G, Kostas ET, Stevens LA, Meredith W, Erans M, Hernández-Montoya V, Buttress A, Uguna CN, Binner E. Green and simple approach for low-cost bioproducts preparation and CO 2 capture. CHEMOSPHERE 2021; 279:130512. [PMID: 33878690 DOI: 10.1016/j.chemosphere.2021.130512] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 04/02/2021] [Accepted: 04/05/2021] [Indexed: 06/12/2023]
Abstract
This study has demonstrated, for the first time, a simple, fast and flexible microwave processing method for the simultaneous preparation of bio-products (bio-oil, bio-gas and biochar) using a methodology that avoids any form of catalyst or chemical activation. The dielectric properties of biomass and physicochemical characterisation such as TGA, elemental and proximate analysis, XRD, SEM/EDX and textural properties, showed that 8 kJ g-1 of microwave energy can produce superior biochars for applications in CO2 capture. The maximum CO2 uptake capacity for biochar produced was 2.5 mmol g-1 and 2.0 mmol g-1 at 0 and 25 °C and 1 bar, which and also exhibited high gas selectivity compared with N2, fast kinetics of adsorption (<10 min) and desirable reusability (>95%) after 20 cycles. GC-MS analysis of generated bio-oil products revealed that higher microwave energies (>8 kJ g-1) significantly enhanced the amount of bio-oil produced (39%) and specifically the formation of levoglucosan, furfural and phenolics compounds, and bio-gas analysis identified trace levels of H2 and CH4. The results from this study confirm a green, inexpensive and efficient approach for biomass valorisation which can easily be embedded within bio-refinery process, and also demonstrates the potential of biochars for post-combustion CO2 uptake.
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Affiliation(s)
- Gabriela Durán-Jiménez
- Faculty of Engineering, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
| | - Emily T Kostas
- Department of Biochemical Engineering, University College London, Gower Street, London, WC1H 6BT, UK
| | - Lee A Stevens
- Faculty of Engineering, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Will Meredith
- Faculty of Engineering, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Maria Erans
- Faculty of Engineering, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Virginia Hernández-Montoya
- TecNM/Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos No. 1801 Ote, C.P. 20256, Aguascalientes, Mexico
| | - Adam Buttress
- Faculty of Engineering, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Clement N Uguna
- Faculty of Engineering, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Eleanor Binner
- Faculty of Engineering, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
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29
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Production of Gasolines and Monocyclic Aromatic Hydrocarbons: From Fossil Raw Materials to Green Processes. ENERGIES 2021. [DOI: 10.3390/en14134061] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The properties and the applications of the main monocyclic aromatic hydrocarbons (benzene, toluene, ethylbenzene, styrene, and the three xylene isomers) and the industrial processes for their manufacture from fossil raw materials are summarized. Potential ways for their production from renewable sources with thermo-catalytic processes are described and discussed in detail. The perspectives of the future industrial organic chemistry in relation to the production of high-octane bio-gasolines and monocyclic aromatic hydrocarbons as renewable chemical intermediates are discussed.
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30
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An Experimental Study on Mechanical Behaviors of Carbon Fiber and Microwave-Assisted Pyrolysis Recycled Carbon Fiber-Reinforced Concrete. SUSTAINABILITY 2021. [DOI: 10.3390/su13126829] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In the last decade, waste carbon fiber-reinforced plastic (CFRP) products have not been properly recycled and reused, and they sometimes cause environmental problems. In this paper, the microwave-assisted pyrolysis (MAP) technology was utilized to remove the resin from the CFRP bicycle frame, which was recycled into carbon fiber. A scanning electron microscope (SEM) and single filament tensile test were used to observe and compare the difference between recycled carbon fiber and normal carbon fiber. The mechanical performances of carbon fiber-reinforced concrete (CFRC) were investigated with static and dynamic tests under three different fiber/cement weight proportions (5‰, 10‰, and 15‰). Three different kinds of carbon fiber were used in this study, normal carbon fiber, carbon fiber without coupling agent, and recycled carbon fiber. The experimental program was tested according to ASTM C39-01, ASTM C293, and ACI 544.2R standards for compression, flexural, and impact test, respectively. From the experimental results, addition of 10‰ of carbon fiber into the concrete exhibited maximum compressive and flexural strength. The impact performance of recycled carbon fiber improved the highest impact number compared with normal carbon fiber under different impact energy.
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31
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Chen R, Zhang S, Yang X, Li G, Zhou H, Li Q, Zhang Y. Thermal behaviour and kinetic study of co-pyrolysis of microalgae with different plastics. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 126:331-339. [PMID: 33798821 DOI: 10.1016/j.wasman.2021.03.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 02/19/2021] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
The coexistence of plastics and microalgae in the ocean has brought great challenges to the environment. Therefore, co-pyrolysis of microalgae Dunaliella salina (DS) and typical plastics (polypropylene (PP), polystyrene (PS), polyethylene terephthalate (PET), and polyvinyl chloride (PVC)) were investigated using thermogravimetric analyzer with Fourier transform infrared spectrometer. The results showed that the coating effect of the molten plastics promoted the pyrolysis of DS. The solid residue amounts of DS-PP, DS-PS, and DS-PET blends were reduced by 1.55 wt%, 1.39 wt%, 1.69 wt%, respectively, as a result of the hydrogenation reaction between the unsaturated products generated by plastics and biochar. While for DS-PVC, attributed to the physical and chemical effects during the co-pyrolysis process, the solid residue was increased by 1.36 wt%. For the other three blends, the solid residues were reduced due to the hydrogenation reaction between the unsaturated products generated by plastics and biochar. FTIR analysis of gaseous products indicated the total CO2 production increased significantly for DS-PET. Besides, the alkyls generated by DS reacted with HCl during DS-PVC co-pyrolysis, the resulting products were then fixed in biochar. Kinetic results suggested that due to the co-pyrolysis with DS, the activation energies of PP, PS, and PET were reduced by 1/2, 1/3, and 3/4, respectively, and this value for PVC in its second stage was reduced by 1/4. Our results indicated the advantage to co-pyrolyze the microalgae and marine plastics.
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Affiliation(s)
- Rongjie Chen
- Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO(2) Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, PR China
| | - Shiyu Zhang
- Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO(2) Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, PR China
| | - Xiaoxiao Yang
- Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO(2) Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, PR China
| | - Guanghao Li
- Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO(2) Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, PR China
| | - Hui Zhou
- Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO(2) Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, PR China
| | - Qinghai Li
- Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO(2) Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, PR China.
| | - Yanguo Zhang
- Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO(2) Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, PR China.
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32
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Socio-Economic and Environmental Impacts of Biomass Valorisation: A Strategic Drive for Sustainable Bioeconomy. SUSTAINABILITY 2021. [DOI: 10.3390/su13084200] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In the late twentieth century, the only cost-effective opportunity for waste removal cost at least several thousand dollars, but nowadays, a lot of improvement has occurred. The biomass and waste generation problems attracted concerned authorities to identify and provide environmentally friendly sustainable solutions that possess environmental and economic benefits. The present study emphasises the valorisation of biomass and waste produced by domestic and industrial sectors. Therefore, substantial research is ongoing to replace the traditional treatment methods that potentially acquire less detrimental effects. Synthetic biology can be a unique platform that invites all the relevant characters for designing and assembling an efficient program that could be useful to handle the increasing threat for human beings. In the future, these engineered methods will not only revolutionise our lives but practically lead us to get cheaper biofuels, producing bioenergy, pharmaceutics, and various biochemicals. The bioaugmentation approach concomitant with microbial fuel cells (MFC) is an example that is used to produce electricity from municipal waste, which is directly associated with the loading of waste. Beyond the traditional opportunities, herein, we have spotlighted the new advances in pertinent technology closely related to production and reduction approaches. Various integrated modern techniques and aspects related to the industrial sector are also discussed with suitable examples, including green energy and other industrially relevant products. However, many problems persist in present-day technology that requires essential efforts to handle thoroughly because significant valorisation of biomass and waste involves integrated methods for timely detection, classification, and separation. We reviewed and proposed the anticipated dispensation methods to overcome the growing stream of biomass and waste at a distinct and organisational scale.
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33
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Zhao G, Liu J, Xu L, Guo S. Comparative study of conventional and microwave heating of polyacrylonitrile-based fibres. JOURNAL OF POLYMER ENGINEERING 2021. [DOI: 10.1515/polyeng-2020-0167] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The effects of the conventional heating method and the microwave heating method on polyacrylonitrile-based fibres in the temperature range of 180–280 °C were investigated. Fourier transform infrared spectroscopy, X-ray wide-angle scattering, Raman spectroscopy, energy-dispersive spectrometer, scanning electron microscopy and bulk density were used to characterise the properties of the samples. Results show that the microwave heating method can shorten the pre-oxidation time, reduce pre-oxidation temperature and reduce the number of surface defects. The pre-oxidised fibres obtained by the microwave heating method exhibit not only good crystallite size but also a smooth surface. Atomic morphology and molecular arrangement are orderly inside the fibre. The FT-IR spectrum shows that the oxidation reaction occurs at 220 °C, and the CI value of PAN fibers stabilised by microwave heating is the larger than the fibers stabilised by conventional heating. XRD analysis shows that fibers stabilised by microwave heating have low stack domains. The SEM and Raman spectra indicate that hydrogen peroxide can improve the surface finish of the fibers and reduce defects. Microwave heating can reduce the pre-oxidation temperature by about 20 °C and shorten the heating time. The economic benefits of using this method are significantly improved.
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Affiliation(s)
- Guozhen Zhao
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology , Kunming 650093 , China
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology , Kunming 650093 , China
| | - Jianhua Liu
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology , Kunming 650093 , China
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology , Kunming 650093 , China
| | - Lei Xu
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology , Kunming 650093 , China
| | - Shenghui Guo
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology , Kunming 650093 , China
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34
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Halder P, Patel S, Kundu S, Gbolahan Hakeem I, Hedayati Marzbali M, Pramanik B, Shah K. Dissolution reaction kinetics and mass transfer during aqueous choline chloride pre-treatment of oak wood. BIORESOURCE TECHNOLOGY 2021; 322:124519. [PMID: 33338943 DOI: 10.1016/j.biortech.2020.124519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/01/2020] [Accepted: 12/04/2020] [Indexed: 06/12/2023]
Abstract
Lignocellulosic biomass processing employing ionic liquids is of recent research interest for the biorefinery industry. The data on biomass dissolution kinetics in ionic liquids is important for designing scale-up pre-treatment reactor design. In this study, the reaction mechanism and kinetics of oak wood dissolution in aqueous choline chloride was investigated. In an extended effort, a correlation of dimensionless numbers was developed for the estimation the mass transfer coefficient. The analyses suggested that oak wood dissolution in choline chloride occurred in two stages. The diffusion of ionic liquid through the product layer was the dominating rate-controlling step in the first stage of dissolution followed by the surface chemical reaction in the second stage. The diffusivity of choline chloride into the oak wood matrix was ranging between 2.96E-14 and 2.84E-13 m2/s. The activation energy of the diffusion controlled stage and surface chemical reaction controlled stage was approximately 24.2 and 40.3 kJ mol-1, respectively. The proposed mathematical correlation for mass transfer coefficient fitted well with the experimental mass transfer coefficient values.
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Affiliation(s)
- Pobitra Halder
- Chemical & Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Savankumar Patel
- Chemical & Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Sazal Kundu
- Chemical & Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Ibrahim Gbolahan Hakeem
- Chemical & Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Mojtaba Hedayati Marzbali
- Chemical & Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Biplob Pramanik
- Civil and Infrastructure Engineering, School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Kalpit Shah
- Chemical & Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia; ARC Training Centre for Transformation of Australia's Biosolids Resource, RMIT University, Bundoora, Victoria 3083, Australia.
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35
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Pôjo V, Tavares T, Malcata FX. Processing Methodologies of Wet Microalga Biomass Toward Oil Separation: An Overview. Molecules 2021; 26:641. [PMID: 33530628 PMCID: PMC7866146 DOI: 10.3390/molecules26030641] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 01/12/2021] [Accepted: 01/21/2021] [Indexed: 11/16/2022] Open
Abstract
One of the main goals of Mankind is to ensure food system sustainability-including management of land, soil, water, and biodiversity. Microalgae accordingly appear as an innovative and scalable alternative source in view of the richness of their chemical profiles. In what concerns lipids in particular, microalgae can synthesize and accumulate significant amounts of fatty acids, a great fraction of which are polyunsaturated; this makes them excellent candidates within the framework of production and exploitation of lipids by various industrial and health sectors, either as bulk products or fine chemicals. Conventional lipid extraction methodologies require previous dehydration of microalgal biomass, which hampers economic feasibility due to the high energy demands thereof. Therefore, extraction of lipids directly from wet biomass would be a plus in this endeavor. Supporting processes and methodologies are still limited, and most approaches are empirical in nature-so a deeper mechanistic elucidation is a must, in order to facilitate rational optimization of the extraction processes. Besides circumventing the current high energy demands by dehydration, an ideal extraction method should be selective, sustainable, efficient, harmless, and feasible for upscale to industrial level. This review presents and discusses several pretreatments incurred in lipid extraction from wet microalga biomass, namely recent developments and integrated processes. Unfortunately, most such developments have been proven at bench-scale only-so demonstration in large facilities is still needed to confirm whether they can turn into competitive alternatives.
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Affiliation(s)
- Vânia Pôjo
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; (V.P.); (F.X.M.)
| | - Tânia Tavares
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; (V.P.); (F.X.M.)
| | - Francisco Xavier Malcata
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; (V.P.); (F.X.M.)
- FEUP—Faculty of Engineering, University of Porto, Rua Dr Roberto Frias, 4200-264 Porto, Portugal
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Ubiera L, Polaert I, Delmotte M, Abdelouahed L, Taouk B. Energy optimization of bio-oil production from biomass by fast pyrolysis using microwaves. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00146a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Microwave fast pyrolysis leads to higher bio-oil production for flax shives than other biomass. An high heating rate and an optimum energy input are required for maximum bio-oil production. Gas and oil composition is stable with operating conditions.
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Affiliation(s)
- Lilivet Ubiera
- Normandie Univ, UNIROUEN, INSA Rouen, LSPC, Laboratoire de Sécurité des Procédés Chimiques, 76000 Rouen, France
| | - Isabelle Polaert
- Normandie Univ, UNIROUEN, INSA Rouen, LSPC, Laboratoire de Sécurité des Procédés Chimiques, 76000 Rouen, France
| | - Michel Delmotte
- Normandie Univ, UNIROUEN, INSA Rouen, LSPC, Laboratoire de Sécurité des Procédés Chimiques, 76000 Rouen, France
| | - Lokmane Abdelouahed
- Normandie Univ, UNIROUEN, INSA Rouen, LSPC, Laboratoire de Sécurité des Procédés Chimiques, 76000 Rouen, France
| | - Bechara Taouk
- Normandie Univ, UNIROUEN, INSA Rouen, LSPC, Laboratoire de Sécurité des Procédés Chimiques, 76000 Rouen, France
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37
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Huang YF, Lo SL. Energy recovery from waste printed circuit boards using microwave pyrolysis: product characteristics, reaction kinetics, and benefits. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:43274-43282. [PMID: 32734544 DOI: 10.1007/s11356-020-10304-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023]
Abstract
Energy recovery from waste printed circuit boards (PCBs) was carried out by using microwave pyrolysis. According to thermogravimetric analysis, the maximum weight loss rate of waste PCBs occurred at 323 °C. When waste PCBs was heated under microwave irradiation at 300 W, the temperature can be reached within 10 min. Compared with conventional pyrolysis, microwave pyrolysis can provide higher weight loss of waste PCBs by 3-5 wt%. Microwave pyrolysis is helpful for the delamination of waste PCBs. Almost 71% of the gaseous product can be directly used as a fuel or converted into other forms of energy. Microwave pyrolysis can produce more HBr than conventional pyrolysis by approximately 17%. The main components of liquid product were phenols and phenyls. The overall energy recovery from waste PCBs using microwave pyrolysis can be 62%. According to kinetic analysis, it would need 20 min of processing time to decompose the combustible fraction of waste PCBs at 300 W. The maximum processing capacity of the microwave pyrolysis system for waste PCBs can be 1.36 kg, with the energy production of 2710 kJ. Furthermore, the pyrolyzed PCBs can be further processed to recycle valuable metals. Therefore, microwave pyrolysis of waste PCBs can be a complete and effective circular economy system to create high energy and economic benefits.
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Affiliation(s)
- Yu-Fong Huang
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan, Republic of China
| | - Shang-Lien Lo
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan, Republic of China.
- Water Innovation, Low Carbon and Environmental Sustainability Research Center, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan, Republic of China.
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38
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Chen R, Zhang S, Cong K, Li Q, Zhang Y. Insight into synergistic effects of biomass-polypropylene co-pyrolysis using representative biomass constituents. BIORESOURCE TECHNOLOGY 2020; 307:123243. [PMID: 32244077 DOI: 10.1016/j.biortech.2020.123243] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/19/2020] [Accepted: 03/20/2020] [Indexed: 06/11/2023]
Abstract
The co-pyrolysis behavior of plastic (PP) with six biomass components (cellulose, hemicellulose, lignin, carbohydrate, lipid, protein) was studied by thermogravimetry. The overlap ratio (OR) and the difference in experimental and theoretical weight loss (ΔW) are defined. The results demonstrated that the interaction of lignin and PP was notable with the OR of 0.9661. From ΔW, it was found that the number of solid residues of hemicellulose-PP and lignin-PP decreased by 1.10% and 2.60%, respectively, which was caused by the hydrogenation reaction between the monomers generated by PP and biochar. The DTG peak shift in co-pyrolysis was further studied. By blending with the biomass, the pyrolysis peaks of PP shifted to the high-temperature region and the value was positively correlated with the fixed carbon content in the biomass components. Kinetic analysis revealed that by co-pyrolysis with biomass, the activation energy of the PP decomposition could be reduced by 39.51% -62.71%.
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Affiliation(s)
- Rongjie Chen
- Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO(2) Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, PR China
| | - Shiyu Zhang
- Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO(2) Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, PR China; School of Energy Science and Engineering, Harbin Institute of Technology, Heilongjiang 150001, PR China
| | - Kunlin Cong
- Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO(2) Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, PR China
| | - Qinghai Li
- Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO(2) Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, PR China
| | - Yanguo Zhang
- Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO(2) Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, PR China.
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39
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Huang YF, Huang YY, Chiueh PT, Lo SL. Heterogeneous Fenton oxidation of trichloroethylene catalyzed by sewage sludge biochar: Experimental study and life cycle assessment. CHEMOSPHERE 2020; 249:126139. [PMID: 32045758 DOI: 10.1016/j.chemosphere.2020.126139] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 02/05/2020] [Accepted: 02/05/2020] [Indexed: 05/03/2023]
Abstract
Heterogeneous Fenton oxidation of trichloroethylene (TCE) catalyzed by sewage sludge biochar was studied. The highest TCE removal efficiency was 83% at pH 3.1, catalyzed by 300 W biochar. The biochars produced at higher microwave power levels provided better catalytic effect, due to higher iron contents and specific surface areas. Reactivity of sewage sludge biochar maintained after several uses, which provides an advantage for using as a permeable reactive barrier to remediate groundwater pollution. Chromium, copper, nickel, lead, and zinc were found in the leachate generated from sewage sludge biochar, and most of the concentrations were lower than the standards for non-drinking water use. Besides, copper, zinc, and iron were found in the reaction solutions of Fenton oxidation. Because of the highest dosage required for Fenton oxidation, the environmental impact caused by 200 W biochar is highest. The environmental impact caused by 300 W biochar is lowest. Among the four endpoint impact categories in the life cycle assessment (LCA), human health is the highest concern, whereas ecosystem quality is the least. According to experimental and LCA results, the optimum microwave power level would be 300 W. The primary impact source is microwave pyrolysis because of high energy usage.
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Affiliation(s)
- Yu-Fong Huang
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 106, Taiwan, ROC
| | - Yu-Yang Huang
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 106, Taiwan, ROC
| | - Pei-Te Chiueh
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 106, Taiwan, ROC.
| | - Shang-Lien Lo
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 106, Taiwan, ROC
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40
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Suriapparao DV, Vinu R, Shukla A, Haldar S. Effective deoxygenation for the production of liquid biofuels via microwave assisted co-pyrolysis of agro residues and waste plastics combined with catalytic upgradation. BIORESOURCE TECHNOLOGY 2020; 302:122775. [PMID: 31986334 DOI: 10.1016/j.biortech.2020.122775] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 06/10/2023]
Abstract
Rice straw and sugarcane bagasse were co-pyrolyzed with polypropylene and polystyrene using microwaves, and the pyrolysis vapors were catalytically upgraded using HZSM-5 catalyst. The product yields, composition and properties of bio-oil from pyrolysis of individual feedstocks and equal composition mixtures before and after catalytic upgradation were thoroughly investigated. The pyrolysis oil yields from polypropylene (82 wt%) and polystyrene (98 wt%) were high compared to that from rice straw (26 wt%) and bagasse (29 wt%). Catalytic upgradation at weight hourly space velocity of 11 h-1 resulted in higher selectivity to unsaturated aliphatics and aromatic hydrocarbons. Properties of upgraded bio-oil from biomass-polypropylene mixtures were similar to that of light fuel oil with high calorific value (43 MJ/kg), low viscosity (1 cP), optimum density (0.850 g/cm3) and flash point (70 °C). Oxygen content in catalytically upgraded co-pyrolysis bio-oil was low (<5%) as compared to upgraded pyrolysis bio-oil (14-18%), and pyrolysis bio-oil without upgradation (20-24%).
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Affiliation(s)
- Dadi V Suriapparao
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India; Department of Chemical Engineering, Pandit Deendayal Petroleum University, Gandhinagar 382007, India
| | - R Vinu
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India; National Centre for Combustion Research and Development, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Arun Shukla
- GAIL (India) Ltd., GAIL Jubilee Tower, Sector 1, Noida 201301, India
| | - Sunil Haldar
- GAIL (India) Ltd., GAIL Jubilee Tower, Sector 1, Noida 201301, India
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41
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Bartoli M, Rosi L, Giovannelli A, Frediani P, Frediani M. Characterization of bio-oil and bio-char produced by low-temperature microwave-assisted pyrolysis of olive pruning residue using various absorbers. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2020; 38:213-225. [PMID: 31409255 DOI: 10.1177/0734242x19865342] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Olive pruning residue is largely formed during cultivation, and is usually disposed through open-air combustion directly in the field, but this habit is a possible source of pollution. The pyrolytic conversion of olive pruning residue has been run in a new and very appealing way using microwave as a heating source and different microwave absorbers in a multimode batch reactor. In this way, olive residue is converted into interesting bio-chemical products with a short pyrolysis time, ranging from 15 to 36 min, and with a peak temperature ranging from 450 K to 705 K according to the different microwave absorber. Thus, a very efficient and selective system was realized, which was able to address the process towards the formation of a large amount of bio-char (up to 61.2%) or a high formation of bio-oil (56.2%) and gas (41.7%) with a very low formation of bio-char (2.1%). However, when carbon and iron were used as microwave absorbers, it was possible to obtain an intermediate amount of bio-char (26-30%) and bio-oil (40 wt%). Bio-oils were collected as dark-brown liquids with low viscosity and density. A bio-oil with a low water concentration was obtained using carbon or iron as the microwave absorber. The bio-oils formed in all experiments contained a very large amount of acetic acid, even when NaOH was the microwave absorber. Furthermore, a large amount of aromatics were present in the bio-oil obtained using carbon as the microwave absorber.
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Affiliation(s)
| | - Luca Rosi
- Department of Chemistry, University of Florence, Italy
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42
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Zhang Y, Cui Y, Liu S, Fan L, Zhou N, Peng P, Wang Y, Guo F, Min M, Cheng Y, Liu Y, Lei H, Chen P, Li B, Ruan R. Fast microwave-assisted pyrolysis of wastes for biofuels production - A review. BIORESOURCE TECHNOLOGY 2020; 297:122480. [PMID: 31812912 DOI: 10.1016/j.biortech.2019.122480] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 11/20/2019] [Accepted: 11/21/2019] [Indexed: 06/10/2023]
Abstract
Microwave-assisted pyrolysis of waste suffers from the problem that the waste generally has low microwave absorptivity thereby resulting in low heating rate and low pyrolysis temperature. In this case, fast microwave-assisted pyrolysis is proposed and developed to help the pyrolysis of waste. This study describes two methods that can be used to realize fast microwave-assisted pyrolysis of waste: (1) premixed method (wastes are mixed with microwave absorbent) and (2) non-premixed method (wastes are poured onto the heated microwave absorbent bed). Then, biofuels (bio-oil, bio-gas, and bio-char) produced from fast microwave-assisted pyrolysis of wastes are reviewed. The review results show that the yields of bio-oil, bio-gas, and bio-char obtained from fast microwave-assisted pyrolysis of wastes varied significantly in the ranges of 2-96 wt%, 2.4-86.8 wt%, and 0.3-83.2 wt%, respectively. Although the present research focused mainly on the premixed method, non-premixed/continuous fast microwave-assisted pyrolysis is still promising and challenging.
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Affiliation(s)
- Yaning Zhang
- School of Energy Science and Engineering, Harbin Institute of Technology (HIT), 92 West Dazhi Street, Harbin, Heilongjiang 150001, China
| | - Yunlei Cui
- School of Energy Science and Engineering, Harbin Institute of Technology (HIT), 92 West Dazhi Street, Harbin, Heilongjiang 150001, China
| | - Shiyu Liu
- Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, 1390 Eckles Ave, St. Paul, MN 55108, USA
| | - Liangliang Fan
- Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, 1390 Eckles Ave, St. Paul, MN 55108, USA; Ministry of Education Engineering Research Center for Biomass Conversion, Nanchang University, 235 Nanjing Road, Nanchang City, Jiangxi 330047, China
| | - Nan Zhou
- Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, 1390 Eckles Ave, St. Paul, MN 55108, USA
| | - Peng Peng
- Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, 1390 Eckles Ave, St. Paul, MN 55108, USA
| | - Yunpu Wang
- Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, 1390 Eckles Ave, St. Paul, MN 55108, USA; Ministry of Education Engineering Research Center for Biomass Conversion, Nanchang University, 235 Nanjing Road, Nanchang City, Jiangxi 330047, China
| | - Feiqiang Guo
- Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, 1390 Eckles Ave, St. Paul, MN 55108, USA
| | - Min Min
- Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, 1390 Eckles Ave, St. Paul, MN 55108, USA
| | - Yanling Cheng
- Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, 1390 Eckles Ave, St. Paul, MN 55108, USA
| | - Yuhuan Liu
- Ministry of Education Engineering Research Center for Biomass Conversion, Nanchang University, 235 Nanjing Road, Nanchang City, Jiangxi 330047, China
| | - Hanwu Lei
- Department of Biological Systems Engineering, Washington State University, 2710 Crimson Way, Richland, WA 99354, USA
| | - Paul Chen
- Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, 1390 Eckles Ave, St. Paul, MN 55108, USA
| | - Bingxi Li
- School of Energy Science and Engineering, Harbin Institute of Technology (HIT), 92 West Dazhi Street, Harbin, Heilongjiang 150001, China
| | - Roger Ruan
- Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, 1390 Eckles Ave, St. Paul, MN 55108, USA; Ministry of Education Engineering Research Center for Biomass Conversion, Nanchang University, 235 Nanjing Road, Nanchang City, Jiangxi 330047, China.
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Shi K, Yan J, Menéndez JA, Luo X, Yang G, Chen Y, Lester E, Wu T. Production of H 2-Rich Syngas From Lignocellulosic Biomass Using Microwave-Assisted Pyrolysis Coupled With Activated Carbon Enabled Reforming. Front Chem 2020; 8:3. [PMID: 32039161 PMCID: PMC6993598 DOI: 10.3389/fchem.2020.00003] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/06/2020] [Indexed: 11/13/2022] Open
Abstract
This study focuses on the use of a microwave reactor that combines biomass pyrolysis, at mild temperature, with catalytic reforming of the pyrolytic gas, using activated carbon, for generating hydrogen-rich synthesis gas. The traditional pyrolysis of biomass coupled with the reforming of its pyrolytic yields were also conducted using an electrically heated reactor. The bio-oil attained from conventional pyrolysis was higher in comparison to the yield from microwave pyrolysis. The reforming of the pyrolytic gas fraction led to reductions in bio-oil yield to <3.0 wt%, with a simultaneous increase in gaseous yields. An increase in the syngas and H2 selectivity was discovered with the reforming process such that the use of microwave pyrolysis with activated carbon reforming produced 85 vol% synthesis gas fraction containing 55 vol% H2 in comparison to the 74 vol% syngas fraction with 30 vol% H2 obtained without the reforming. Cracking reactions were improved with microwave heating, while deoxidation and dehydrogenation reactions were enhanced by activated carbon, which creates a reduction environment. Consequently, these reactions generated H2-rich syngas formation. The approach implemented in this study revealed higher H2, syngas yield and that the overall LHV of products has huge potential in the transformation of biomass into high-value synthesis gas.
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Affiliation(s)
- Kaiqi Shi
- Key Laboratory for Carbonaceous Wastes Processing and Process Intensification Research of Zhejiang Province, The University of Nottingham Ningbo China, Ningbo, China
| | - Jiefeng Yan
- College of Science & Technology, Ningbo University, Ningbo, China
| | | | - Xiang Luo
- Key Laboratory for Carbonaceous Wastes Processing and Process Intensification Research of Zhejiang Province, The University of Nottingham Ningbo China, Ningbo, China
| | - Gang Yang
- Key Laboratory for Carbonaceous Wastes Processing and Process Intensification Research of Zhejiang Province, The University of Nottingham Ningbo China, Ningbo, China
| | - Yipei Chen
- Key Laboratory for Carbonaceous Wastes Processing and Process Intensification Research of Zhejiang Province, The University of Nottingham Ningbo China, Ningbo, China
| | - Edward Lester
- Department of Chemical and Environmental Engineering, The University of Nottingham, Nottingham, United Kingdom
| | - Tao Wu
- Key Laboratory for Carbonaceous Wastes Processing and Process Intensification Research of Zhejiang Province, The University of Nottingham Ningbo China, Ningbo, China
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Lam SS, Wan Mahari WA, Ma NL, Azwar E, Kwon EE, Peng W, Chong CT, Liu Z, Park YK. Microwave pyrolysis valorization of used baby diaper. CHEMOSPHERE 2019; 230:294-302. [PMID: 31108440 DOI: 10.1016/j.chemosphere.2019.05.054] [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: 02/28/2019] [Revised: 04/21/2019] [Accepted: 05/06/2019] [Indexed: 05/28/2023]
Abstract
Used baby diaper consists of a combination of decomposable cellulose, non-biodegradable plastic materials (e.g. polyolefins) and super-absorbent polymer materials, thus making it difficult to be sorted and separated for recycling. Microwave pyrolysis was examined for its potential as an approach to transform used baby diapers into value-added products. Influence of the key operating parameters comprising process temperature and microwave power were investigated. The pyrolysis showed a rapid heating process (up to 43 °C/min of heating rate) and quick reaction time (20-40 min) in valorizing the used diapers to generate pyrolysis products comprising up to 43 wt% production of liquid oil, 29 wt% gases and 28 wt% char product. Microwave power and operating temperature were observed to have impacts on the heating rate, process time, production and characteristics of the liquid oil and solid char. The liquid oil contained alkanes, alkenes and esters that can potentially be used as chemical additives, cosmetic products and fuel. The solid char contained high carbon, low nitrogen and free of sulphur, thus showing potential for use as adsorbents and soil additives. These observations demonstrate that microwave pyrolysis has great prospect in transforming used baby diaper into liquid oil and char products that can be utilised in several applications.
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Affiliation(s)
- Su Shiung Lam
- School of Forestry, Henan Agricultural University, Zhengzhou, 450002, China; Pyrolysis Technology Research Group, School of Ocean Engineering, Universiti Malaysia Terengganu, 21030, Kuala Terengganu, Terengganu, Malaysia; China-UK Low Carbon College, Shanghai Jiao Tong University, Lingang, Shanghai, 201306, China.
| | - Wan Adibah Wan Mahari
- Pyrolysis Technology Research Group, School of Ocean Engineering, Universiti Malaysia Terengganu, 21030, Kuala Terengganu, Terengganu, Malaysia
| | - Nyuk Ling Ma
- School of Fundamental Sciences, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Elfina Azwar
- Pyrolysis Technology Research Group, School of Ocean Engineering, Universiti Malaysia Terengganu, 21030, Kuala Terengganu, Terengganu, Malaysia
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, Seoul, 05005, Republic of Korea
| | - Wanxi Peng
- School of Forestry, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Cheng Tung Chong
- China-UK Low Carbon College, Shanghai Jiao Tong University, Lingang, Shanghai, 201306, China
| | - Zhenling Liu
- School of Management, Henan University of Technology, Zhengzhou, 450001, China
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea.
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Cantero D, Jara R, Navarrete A, Pelaz L, Queiroz J, Rodríguez-Rojo S, Cocero MJ. Pretreatment Processes of Biomass for Biorefineries: Current Status and Prospects. Annu Rev Chem Biomol Eng 2019; 10:289-310. [PMID: 30892926 DOI: 10.1146/annurev-chembioeng-060718-030354] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
This article seeks to be a handy document for the academy and the industry to get quickly up to speed on the current status and prospects of biomass pretreatment for biorefineries. It is divided into two biomass sources: vegetal and animal. Vegetal biomass is the material produced by plants on land or in water (algae), consuming sunlight, CO2, water, and soil nutrients. This includes residues or main products from, for example, intensive grass crops, forestry, and industrial and agricultural activities. Animal biomass is the residual biomass generated from the production of food from animals (e.g., manure and whey). This review does not mean to include every technology in the area, but it does evaluate physical pretreatments, microwave-assisted extraction, and water treatments for vegetal biomass. A general review is given for animal biomass based in physical, chemical, and biological pretreatments.
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Affiliation(s)
- D Cantero
- BioEcoUVa, Research Institute on Bioeconomy, Group of High-Pressure Technology, Department of Chemical Engineering and Environmental Technology, University of Valladolid, Vallodolid 47011, Spain;
| | - R Jara
- Department of Forestry, University of West Virginia, Morgantown, West Virginia 26506, USA
| | - A Navarrete
- Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
| | - L Pelaz
- BETA Technological Center, University of Vic-Central University of Catalonia, Vic, Barcelona 08500, Spain
| | - J Queiroz
- Federal University of São Carlos, São Carlos 13565-905, Brazil
| | - S Rodríguez-Rojo
- BioEcoUVa, Research Institute on Bioeconomy, Group of High-Pressure Technology, Department of Chemical Engineering and Environmental Technology, University of Valladolid, Vallodolid 47011, Spain;
| | - M J Cocero
- BioEcoUVa, Research Institute on Bioeconomy, Group of High-Pressure Technology, Department of Chemical Engineering and Environmental Technology, University of Valladolid, Vallodolid 47011, Spain;
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Dai L, Wang Y, Liu Y, Ruan R, Yu Z, Jiang L. Comparative study on characteristics of the bio-oil from microwave-assisted pyrolysis of lignocellulose and triacylglycerol. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 659:95-100. [PMID: 30597473 DOI: 10.1016/j.scitotenv.2018.12.241] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 12/15/2018] [Accepted: 12/16/2018] [Indexed: 06/09/2023]
Abstract
Microwave-assisted pyrolysis of Camellia oleifera shell (COS) and stillingia oil (SO) was performed in the temperature range of 400-600 °C. The effects of feedstock and pyrolysis temperatures on product yield and bio-oil composition were discussed in detail. The bio-oil yield from COS pyrolysis varied from 37.30 wt% to 40.27 wt%, which was 11.32 wt% to 21.62 wt% lower than that from SO pyrolysis. Gas chromatography-mass spectrometry analysis indicated that SO bio-oil was rich in hydrocarbons, whereas COS pyrolysis produced mainly oxygen-containing compounds predominantly comprising phenols and acids. Fourier transform infrared and 1H-nuclear magnetic resonance spectra showed significant differences in the chemical structure of bio-oils from COS and SO pyrolysis. Elemental-composition and physical-property analyses further revealed that SO bio-oils were similar to gasoline and heavy fuel oil.
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Affiliation(s)
- Leilei Dai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China
| | - Yunpu Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China.
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China
| | - Roger Ruan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA
| | - Zhenting Yu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China
| | - Lin Jiang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China
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Wang Y, Tian X, Zeng Z, Dai L, Zhang S, Jiang L, Wu Q, Yang X, Liu Y, Zhang B, Yu Z, Wen P, Fu G, Ruan R. Catalytic co-pyrolysis of Alternanthera philoxeroides and peanut soapstock via a new continuous fast microwave pyrolysis system. WASTE MANAGEMENT (NEW YORK, N.Y.) 2019; 88:102-109. [PMID: 31079622 DOI: 10.1016/j.wasman.2019.03.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 03/15/2019] [Accepted: 03/15/2019] [Indexed: 06/09/2023]
Abstract
Continuous fast microwave catalytic co-pyrolysis of Alternanthera philoxeroides and peanut soapstock was studied using HZSM-5 as catalyst. The effects of catalyst temperature, feedstock-to-catalyst ratio, and A. philoxeroides-to-peanut soapstock ratio on the yield and composition of bio-oil were studied. Experimental results showed that the optimum catalyst temperature was 400 °C. The catalyst increased the proportion of aromatics but reduced the bio-oil yield. The optimum feedstock-to-catalyst ratio was 2:1. A. philoxeroides presented a significant synergistic effect with peanut soapstock, which facilitated the production of aromatics in the bio-oil. The optimum A. philoxeroides-to-peanut soapstock ratio was 1:2.
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Affiliation(s)
- Yunpu Wang
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA
| | - Xiaojie Tian
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Zihong Zeng
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Leilei Dai
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Shumei Zhang
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Lin Jiang
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Qiuhao Wu
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Xiuhua Yang
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Yuhuan Liu
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China.
| | - Bo Zhang
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing, Jiangsu 210096, China
| | - Zhenting Yu
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Pingwei Wen
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Guiming Fu
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China
| | - Roger Ruan
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA
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Wang Y, Zeng Z, Tian X, Dai L, Jiang L, Zhang S, Wu Q, Wen P, Fu G, Liu Y, Ruan R. Production of bio-oil from agricultural waste by using a continuous fast microwave pyrolysis system. BIORESOURCE TECHNOLOGY 2018; 269:162-168. [PMID: 30172179 DOI: 10.1016/j.biortech.2018.08.067] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 08/14/2018] [Accepted: 08/16/2018] [Indexed: 05/12/2023]
Abstract
In this study, a continuous fast microwave-assisted pyrolysis system was developed to produce bio-oil, gas, and biochar from rice straw and Camellia oleifera shell. The effects of different pyrolysis temperatures (400 °C, 500 °C, and 600 °C) and feed rates (rice straw: 25, 45, and 66 g/min; C. oleifera shell: 100, 200, and 400 g/min) on bio-oil production were investigated. Experimental results showed that the yields of bio-oil (31.86 wt%) and gas (54.49 wt%) produced by the microwave-assisted pyrolysis of rice straw increased with increasing temperature. By contrast, the yields of bio-oil (27.45 wt%) and biochar (35.47 wt%) produced by the pyrolysis of C. oleifera shell decreased with increasing temperature. The contents of phenols, aldehydes, and alcohols in bio-oil produced from the shell were higher than those in bio-oil derived from rice straw.
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Affiliation(s)
- Yunpu Wang
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
| | - Zihong Zeng
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Xiaojie Tian
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Leilei Dai
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Ling Jiang
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Shumei Zhang
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Qiuhao Wu
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Pingwei Wen
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China
| | - Guiming Fu
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China
| | - Yuhuan Liu
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China.
| | - Roger Ruan
- Nanchang University, State Key Laboratory of Food Science and Technology, Nanchang 330047, China; Nanchang University, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang 330047, China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA
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Yerrayya A, Suriapparao DV, Natarajan U, Vinu R. Selective production of phenols from lignin via microwave pyrolysis using different carbonaceous susceptors. BIORESOURCE TECHNOLOGY 2018; 270:519-528. [PMID: 30248651 DOI: 10.1016/j.biortech.2018.09.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 09/08/2018] [Accepted: 09/10/2018] [Indexed: 06/08/2023]
Abstract
With an objective to improve the yield and selectivity of phenols in pyrolysis bio-oil from lignin, this study investigates the effects of mass ratio of lignin-to-susceptor and different types of susceptors (activated carbons of different particle sizes, charcoal and graphite) in microwave pyrolysis. Pyrolysis was carried out in a batch microwave reactor, and the temperature profiles at different operating conditions were captured. Increasing the mass of susceptor with respect to lignin enhanced the bio-oil yield, and maximum yield of 66 wt% with >90% selectivity to phenols was obtained with 10 g lignin:90 g activated carbon. Moisture present in the susceptor is shown to control the pyrolysis severity and lead to better phenol yields. This was verified by the high yield of hydrogen gas formed due to the steam-assisted cracking of lignin. With highly porous activated carbon, 80% selectivity of phenol was obtained, albeit with a low yield of bio-oil.
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Affiliation(s)
- Attada Yerrayya
- Department of Chemical Engineering and National Centre for Combustion Research and Development, IIT Madras, Chennai 600036, India
| | - Dadi V Suriapparao
- Department of Chemical Engineering and National Centre for Combustion Research and Development, IIT Madras, Chennai 600036, India
| | - Upendra Natarajan
- Department of Chemical Engineering and National Centre for Combustion Research and Development, IIT Madras, Chennai 600036, India
| | - R Vinu
- Department of Chemical Engineering and National Centre for Combustion Research and Development, IIT Madras, Chennai 600036, India.
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50
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Huang YF, Chiueh PT, Kuan WH, Lo SL. Product distribution and heating performance of lignocellulosic biomass pyrolysis using microwave heating. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.egypro.2018.09.092] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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