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Sathiyamoorthi E, Lee J, Ramesh MD, M R, Sandhanasamy D, Nguyen ND, Shanmuganathan R. Biodiesel production from eggshells derived bio-nano CaO catalyst-Microemulsion fuel blends for up-gradation of biodiesel. ENVIRONMENTAL RESEARCH 2024; 260:119626. [PMID: 39019143 DOI: 10.1016/j.envres.2024.119626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 07/12/2024] [Accepted: 07/14/2024] [Indexed: 07/19/2024]
Abstract
The utilization of bio-oil derived from biomass presents a promising alternative to fossil fuels, though it faces challenges when directly applied in diesel engines. Microemulsification has emerged as a viable strategy to enhance bio-oil properties, facilitating its use in hybrid fuels. This study explores the microemulsification of Jatropha bio-oil with ethanol, aided by a surfactant, to formulate a hybrid liquid fuel. Additionally, a bio-nano CaO heterogeneous catalyst synthesized from eggshells is employed to catalyse the production of Jatropha biodiesel from the microemulsified fuel using microwave irradiation. The catalyst is characterized through UV-Vis, XRD, and SEM analysis. The investigation reveals a significant reduction in CO, CO2, and NOX emissions with the utilization of microemulsion-based biodiesel blends. Various blends of conventional diesel, Jatropha biodiesel, and ethanol are prepared with different ethanol concentrations (5, 10, and 20 wt%). Engine performance parameters, including fuel consumption, NOX emission, and brake specific fuel consumption, are analyzed. Results indicate that the conventional diesel/Jatropha biodiesel/ethanol (10 wt%) blend exhibits superior performance compared to conventional diesel, Jatropha biodiesel, and other blends. The fuel consumption of the conventional diesel/Jatropha biodiesel/ethanol (10 wt%) blend is measured at 554.6 g/h, surpassing that of conventional diesel and other biodiesel blends. The presence of water (0.14 %) in the blend reduces the heating value, consequently increasing the energy requirement. CO and CO2 emissions for the conventional diesel/Jatropha biodiesel/ethanol (10 wt%) blend are notably lower compared to conventional C-18 hydrocarbons and various biodiesel blends. These findings accentuate the efficacy of the microemulsion process in enhancing fuel characteristics and reducing emissions. Further investigations could explore optimizing the emulsifying agents and their impact on engine performance and emission characteristics, contributing to the advancement of sustainable fuel technologies.
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Affiliation(s)
- Ezhaveni Sathiyamoorthi
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
| | - M D Ramesh
- Instituto de Alta Investigación, Universidad de Tarapacá, Arica, 1000000, Chile
| | - Rithika M
- Center for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, India
| | - Devanesan Sandhanasamy
- Department of Physics and Astronomy, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - N D Nguyen
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam; School of Engineering & Technology, Duy Tan University, Da Nang, Vietnam
| | - Rajasree Shanmuganathan
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam; School of Engineering & Technology, Duy Tan University, Da Nang, Vietnam.
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2
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Suresh P, Vijayaragavan M. Experimental investigation on use of hydrotreated Simarouba oil (green diesel) and hydrogen gas in a dual-fuel CI engine. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:36033-36043. [PMID: 36542279 DOI: 10.1007/s11356-022-24829-1] [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: 09/15/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
Hydrogen additives to Simarouba glauca vegetable oil (SO) are a common method for addressing the difficulties in combustion caused by SO's poor physical qualities. This research intends to examine parameters such as performance, emission, and combustion characteristics when hydrogen is used as a direct/indirect addition in a SO-fuelled compression ignition (CI) engine. Hydrogen was directly introduced along with intake air until the knocking limit. Experiment was conducted at different load conduction with SO. Through the hydrotreatment process, hydrogen was used in a roundabout way to convert SO to green diesel. Hydrotreated Simarouba vegetable oil (HTSO) enhanced brake thermal efficiency by 23% at full load, whereas direct hydrogen induction improved it by 9% at knock limit. Hydrogen induction resulted in higher NOx emissions than HTSO, at the expense of a slight rise in smoke emissions. Addition of hydrogen lowered both HC and CO emissions directly and indirectly.
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Affiliation(s)
- Pelluru Suresh
- Department of Mechanical Engineering, SRM Institute of Science and Technology, Tamil Nadu, Kattakulathur, Chengalpattu District, India
| | - Mathanraj Vijayaragavan
- Department of Mechanical Engineering, SRM Institute of Science and Technology, Tamil Nadu, Kattakulathur, Chengalpattu District, India.
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3
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3D Hollow Mg-Ca-Al Hydrotalcite-Like Compounds Doped with KF for Catalytic Transesterification. INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING 2023. [DOI: 10.1155/2023/9944183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Herein, a kind of three-dimensional hollow Mg-Ca-Al hydrotalcite-like compounds (HTLCs) microsphere was prepared by self-assembly of hydrotalcite-like nanosheets. Mg-Ca-Al HTLCs microsphere (MS) has large specific surface area and large pore size, and the modification of KF·2H2O increases numerous alkaline active sites on the surface of the catalyst. The prepared catalyst has excellent catalytic effect for the production of biodiesel by transesterification. Under the optimal conditions of the catalyst addition amount which accounts for 2% of the weight of oil, the biodiesel yield of the best catalyst is as high as 92% within 30 minutes. This article also provides a paradigm of a rational structural design for regulating the morphology of HTLCs.
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Alsaiari M, Ahmad M, Zafar M, Harraz FA, Algethami JS, Šljukić B, Santos DMF, Akhtar MS. Transformation of waste seed biomass of Cordia myxa into valuable bioenergy through membrane bioreactor using green nanoparticles of indium oxide. CHEMOSPHERE 2023; 314:137604. [PMID: 36574789 DOI: 10.1016/j.chemosphere.2022.137604] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 12/10/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
Depletion of non-renewable fuel has obliged researchers to seek out sustainable and environmentally friendly alternatives. Membranes have proven to be an effective technique in biofuel production for reaction, purification, and separation, with the ability to use both porous and non-porous membranes. It is demonstrated that a membrane-based sustainable and green production can result in a high degree of process intensification, whereas the recovery and repurposing of catalysts and alcohol are anticipated to increase the process economics. Therefore, in this study sustainable biodiesel was synthesized from inedible seed oil (37 wt%) of Cordia myxa using a membrane reactor. Transesterification was catalyzed by heterogenous nano-catalyst of indium oxide prepared with leaf extract of Boerhavia diffusa. Highest biodiesel yield of 95 wt% was achieved at methanol to oil molar ratio of 7:1, catalyst load 0.8 wt%, temperature 82.5 °C and time 180 min In2O3 nanoparticles exhibited reusability up to five successive transesterification rounds. The production of methyl esters was confirmed using Fourier-transform infrared spectroscopy and Nuclear Magnetic Resonance. The predominant fatty acid methyl ester detected in the biodiesel was 5, 8-octadecenoic acid. Biodiesel fuel qualities were determined to be comparable to worldwide ASTM D-6571 and EN-14214 standards. Finally, it was concluded that membrane technology can result in a highly intensified reaction process while efficient recovery of both nano catalysts and methanol increases the economics of transesterification and lead to sustainable production.
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Affiliation(s)
- Mabkhoot Alsaiari
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano Research Centre, Najran University, Najran, 11001, Saudi Arabia; Empty Quarter Research Unit, Department of Chemistry, College of Science and Art in Sharurah, Najran University, Sharurah, Saudi Arabia.
| | - Mushtaq Ahmad
- Department of Plant Sciences, Quaid- i- Azam University, Islamabad, 45320, Pakistan.
| | - Muhammad Zafar
- Department of Plant Sciences, Quaid- i- Azam University, Islamabad, 45320, Pakistan
| | - Farid A Harraz
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano Research Centre, Najran University, Najran, 11001, Saudi Arabia; Nanomaterials and Nanotechnology Department, Central Metallurgical Research and Development Institute (CMRDI), P.O. Box: 87 Helwan, Cairo, 11421, Egypt
| | - Jari S Algethami
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano Research Centre, Najran University, Najran, 11001, Saudi Arabia
| | - Biljana Šljukić
- Center of Physics and Engineering of Advanced Materials, Laboratory for Physics of Materials and Emerging Technologies, Chemical Engineering Department, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisbon, Portugal
| | - Diogo M F Santos
- Center of Physics and Engineering of Advanced Materials, Laboratory for Physics of Materials and Emerging Technologies, Chemical Engineering Department, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisbon, Portugal
| | - Muhammad Saeed Akhtar
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea.
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5
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Naveed A, Javaid A, Zia A, Ishaq MT, Amin M, Farooqi ZUR, Mahmood A. TiO 2/g-C 3N 4 Binary Composite as an Efficient Photocatalyst for Biodiesel Production from Jatropha Oil and Dye Degradation. ACS OMEGA 2023; 8:2173-2182. [PMID: 36687058 PMCID: PMC9850785 DOI: 10.1021/acsomega.2c04841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
In the present work, TiO2/g-C3N4 nanocomposites were synthesized by using highly crystalline TiO2 nanorods/rice (NRs) and various percentages of g-C3N4 via a facile, scalable, and inexpensive pyrolysis method. The synthesized nanocomposites were characterized by various techniques, e.g., X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), N2 adsorption and desorption analysis (BET), Fourier transform infrared spectroscopy (FTIR), UV-vis diffuse reflectance spectroscopy (DRS), electrochemical impedance spectroscopy (EIS), and chronoamperometry (CA). It was found that biodiesel production by the esterification reaction can be remarkably enhanced by coupling TiO2 with g-C3N4; hereby, it was observed that with increasing percentage of g-C3N4 from 5 to 10 and 15% with respect to TiO2 NRs, the photocatalytic activity rose and the maximum photocatalytic activity with 97% conversion was observed for NC-3, i.e., 15% g-C3N4/TiO2. Moreover, the photoactivity of pristine TiO2 NR aggregates was contrasted with their nanoparticle morphology and was estimated to be slightly better. When applied for photocatalytic Congo red dye degradation, this sample showed a 91% degradation efficiency using only a very small amount of the catalyst. The high catalytic efficiency is attributed to the narrow band gap, exceptionally high surface area, and efficient charge separation properties of the prepared catalysts.
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Affiliation(s)
- Abdul
Basit Naveed
- Department
of Chemistry, National University of Sciences
and Technology (NUST), Islamabad40100, Pakistan
| | - Aftab Javaid
- Department
of Chemistry, National University of Sciences
and Technology (NUST), Islamabad40100, Pakistan
| | - Adeel Zia
- Department
of Chemistry, National University of Sciences
and Technology (NUST), Islamabad40100, Pakistan
| | - Muhammad Tayyab Ishaq
- Department
of Chemistry, National University of Sciences
and Technology (NUST), Islamabad40100, Pakistan
| | - Muhammad Amin
- US-Pakistan
Center for Advanced Studies in Energy, National
University of Sciences and Technology (NUST), Islamabad40100, Pakistan
| | - Zia Ur Rahman Farooqi
- Institute
of Soil and Environmental Sciences, University
of Agriculture, Faisalabad38040, Pakistan
| | - Azhar Mahmood
- Department
of Chemistry, National University of Sciences
and Technology (NUST), Islamabad40100, Pakistan
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6
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Yuan R, Pu J, Wu D, Wu Q, Huhe T, Lei T, Chen Y. Research Priorities and Trends on Bioenergy: Insights from Bibliometric Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15881. [PMID: 36497955 PMCID: PMC9738863 DOI: 10.3390/ijerph192315881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Replacing fossil fuels with bioenergy is crucial to achieving sustainable development and carbon neutrality. To determine the priorities and developing trends of bioenergy technology, related publications from 2000 to 2020 were analyzed using bibliometric method. Results demonstrated that the number of publications on bioenergy increased rapidly since 2005, and the average growth rate from 2005 to 2011 reached a maximum of 20% per year. In terms of publication quantity, impact, and international collaboration, the USA had been leading the research of bioenergy technology, followed by China and European countries. Co-occurrence analysis using author keywords identified six clusters about this topic, which are "biodiesel and transesterification", "biogas and anaerobic digestion", "bioethanol and fermentation", "bio-oil and pyrolysis", "microalgae and lipid", and "biohydrogen and gasification or dark fermentation". Among the six clusters, three of them relate to liquid biofuel, attributing that the liquid products of biomass are exceptional alternatives to fossil fuels for heavy transportation and aviation. Lignocellulose and microalgae were identified as the most promising raw materials, and pretreating technologies and efficient catalysts have received special attention. The sharp increase of "pyrolysis" and "gasification" from 2011 to 2020 suggested that those technologies about thermochemical conversion have been well studied in recent years. Some new research trends, such as applying nanoparticles in transesterification, and hydrothermal liquefaction in producing bio-oil from microalgae, will get a breakthrough in the coming years.
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Affiliation(s)
- Ruling Yuan
- College of Energy and Power Engineering, Lanzhou University of Technology, No. 287 Langongping Road, Lanzhou 730050, China
| | - Jun Pu
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, No. 21 Gehu Road, Changzhou 213164, China
- School of Environmental Science and Engineering, Changzhou University, No. 21 Gehu Road, Changzhou 213164, China
| | - Dan Wu
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, No. 21 Gehu Road, Changzhou 213164, China
| | - Qingbai Wu
- College of Energy and Power Engineering, Lanzhou University of Technology, No. 287 Langongping Road, Lanzhou 730050, China
| | - Taoli Huhe
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, No. 21 Gehu Road, Changzhou 213164, China
| | - Tingzhou Lei
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, No. 21 Gehu Road, Changzhou 213164, China
| | - Yong Chen
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, No. 21 Gehu Road, Changzhou 213164, China
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, No. 2 Nengyuan Road, Guangzhou 510640, China
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7
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Mittal V, Ghosh UK. Potential of microalgae for phytoremediation of various wastewaters for nutrient removal and biodiesel production through nanocatalytic transesterification. ASIA-PAC J CHEM ENG 2022. [DOI: 10.1002/apj.2847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Vaishali Mittal
- Department of Polymer and Process Engineering IIT Roorkee Saharanpur Campus Saharanpur India
| | - Uttam Kumar Ghosh
- Department of Polymer and Process Engineering IIT Roorkee Saharanpur Campus Saharanpur India
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8
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Alsaiari M, Ahmad M, Zafar M, Sultana S, Rizk MA, Almohana AI, Ahmad Z, Alsaiari RA, Akhtar MS. Treatment of Saussurea heteromalla for biofuel synthesis using catalytic membrane reactor. CHEMOSPHERE 2022; 305:135335. [PMID: 35724723 DOI: 10.1016/j.chemosphere.2022.135335] [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: 05/14/2022] [Revised: 06/06/2022] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
Membrane technology has been adopted as a prospective and promising alternative to the standard technology used for biodiesel production since the time when it had some limitations. During this research project, the inedible seed oil generating feedstock known as Saussurea heteromalla was put through a biodiesel production process that utilized membrane technology with an effort to increase the yield of methyl ester. The transesterification process was mediated by zirconium oxide nanoparticles that were generated using an aqueous extract of Portulaca oleracea leaf. With an oil to methanol ratio of 1:9, a catalyst concentration of 0.88 (wt. %), temperature of 87 °C, and reaction time of 180 min, the highest possible biodiesel yield of 93% was achieved. The findings of the catalyst characterization demonstrated the purity of the zirconium oxide nano particles and their nanoscale nature with average particle size of 31 nm. Using gas chromatography and mass spectrometry (GC/MS), an examination of biodiesel revealed the presence of four different peaks of methyl esters. Using Fourier-transform infrared spectroscopy (FTIR) and nuclear magnetic resonance, we were able to verify that the production of methyl esters in the biodiesel sample was successful (NMR). Zerconium oxide nanoparticles were found reusable up to five consecutive cycles of transesterification. The fuel-related properties of methyl ester have been determined and are in line with the requirements of the international standards ASTM D-6571 and EN 14214. In the course of our ongoing research, we made use of membrane technology, which led to the production of biodiesel from the seed oil of Saussurea heteromalla that was better for the environment, more cost effective, and produced in greater quantities.
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Affiliation(s)
- Mabkhoot Alsaiari
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano Research Centre, Najran University, Najran, 11001, Saudi Arabia; Empty Quarter Research Unit, Department of Chemistry, College of Science and Art in Sharurah, Najran University, Sharurah, Saudi Arabia
| | - Mushtaq Ahmad
- Department of Plant Sciences, Quaid- i- Azam University Islamabad, 45320, Pakistan
| | - Muhammad Zafar
- Department of Plant Sciences, Quaid- i- Azam University Islamabad, 45320, Pakistan
| | - Shazia Sultana
- Department of Plant Sciences, Quaid- i- Azam University Islamabad, 45320, Pakistan
| | - Moustafa A Rizk
- Empty Quarter Research Unit, Department of Chemistry, College of Science and Art in Sharurah, Najran University, Sharurah, Saudi Arabia; Department of Chemistry of Science Faculty, Suez Canal University, Ismailia, 41522, Egypt
| | - Abdulaziz Ibrahim Almohana
- Department of Civil Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh, 11421, Saudi Arabia
| | - Zubair Ahmad
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea.
| | - Raiedhah A Alsaiari
- Empty Quarter Research Unit, Department of Chemistry, College of Science and Art in Sharurah, Najran University, Sharurah, Saudi Arabia
| | - Muhammad Saeed Akhtar
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea.
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9
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Thamizhlarasan A, Vignesh R, Anbarasan R, Tung K. Synthesis and characterization of functionalized polyvinylidene fluoride (
PVDF)
and the high temperature catalytic activity of
PVDF‐
g
‐MAH
/
V
2
O
5
nanocomposite toward transesterification reaction. POLYM ENG SCI 2022. [DOI: 10.1002/pen.26081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anbarasan Thamizhlarasan
- Department of Polymer Technology KCET Madurai India
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
| | - Ramamoorthi Vignesh
- Department of Polymer Technology KCET Madurai India
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
| | - Ramasamy Anbarasan
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
| | - Kuo‐Lun Tung
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
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10
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Heterogeneous nanocatalyst for biodiesel fuel production: bench scale from waste oil sources. Z PHYS CHEM 2022. [DOI: 10.1515/zpch-2021-3160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Biodiesel is a promising clean energy supply that can be made from sustainable and low-grade fuels using a variety of methods. Transesterification is one of the processes that can occur in the manifestation of an effective catalyst. The catalyst may be homogeneous or heterogeneous in nature. This article reviews on the formation of biodiesel from various sources of waste oils using heterogeneous nanocatalysts. The manufacture of biodiesel using homogeneous and heterogeneous catalysis had been extensively studied, and new heterogeneous catalysts are constantly being examined. In general, homogeneous catalysts are effective at remodeling biodiesel with low free fatty acid (FFA) and single-origin feedstock having water. Heterogeneous catalysts, instead have higher interest, a wider scope of selectivity, better FFA, and better water adaptability. These properties are regulated by the number and intensity of active basic or acid sites. In order to achieve a viable alternative to conventional homogeneous catalysts for biodiesel processing, heterogeneous catalysts made from waste and biocatalysts are needed. Nanocatalysts have recently attracted interest due to their high catalytic performance under favorable operating conditions. This review evaluates the usage of heterogeneous nanocatalysts for the production of biodiesel from different sources of waste oil and the factors effecting the process of biodiesel production.
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11
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Prospects of Catalysis for Process Sustainability of Eco-Green Biodiesel Synthesis via Transesterification: A State-Of-The-Art Review. SUSTAINABILITY 2022. [DOI: 10.3390/su14127032] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Environmental pollution caused by conventional petro-diesel initiates at time of crude oil extraction and continues until its consumption. The resulting emission of poisonous gases during the combustion of petroleum-based fuel has worsened the greenhouse effect and global warming. Moreover, exhaustion of finite fossil fuels due to extensive exploitation has made the search for renewable resources indispensable. In light of this, biodiesel is a best possible substitute for the regular petro-diesel as it is eco-friendly, renewable, and economically viable. For effective biodiesel synthesis, the selection of potential feedstock and choice of efficient catalyst is the most important criteria. The main objective of this bibliographical review is to highlight vital role of different catalytic systems acting on variable feedstock and diverse methods for catalysis of biodiesel synthesis reactions. This paper further explores the effects of optimized reaction parameters, modification in chemical compositions, reaction operating parameters, mechanism and methodologies for catalysts preparation, stability enhancement, recovery, and reusability with the maximum optimum activity of catalysts. In future, the development of well-planned incentive structures is necessary for systematic progression of biodiesel process. Besides this, the selection of accessible and amended approaches for synthesis and utilization of specific potential catalysts will ensure the sustainability of eco-green biodiesel.
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12
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Mittal V, Talapatra KN, Ghosh UK. A comprehensive review on biodiesel production from microalgae through nanocatalytic transesterification process: lifecycle assessment and methodologies. INTERNATIONAL NANO LETTERS 2022. [DOI: 10.1007/s40089-022-00372-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Concept for Biomass and Organic Waste Refinery Plants Based on the Locally Available Organic Materials in Rural Areas of Poland. ENERGIES 2022. [DOI: 10.3390/en15093392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
The importance of developing efficient and environmentally friendly means of biomass conversion into bioenergy, biofuels, and valuable products is currently high in Poland. Accordingly, herein, two new energy and biofuel units are proposed, namely, POLpec and POLbp, which are used as reference sources for comparing energy consumption and biofuel production in other countries or regions in the world. One POLpec equals 4400 PJ (195.1 Mtoe), reflecting the annual primary energy consumption of Poland in 2020. Meanwhile, one POLbp equals 42 PJ (1.0 Mtoe), referring to the annual production of biofuels in Poland in 2020. Additionally, a new import–export coefficient β is proposed in the current study, which indicates the relationship between the import and export of an energy carrier. More specifically, the potential of biomass and organic waste to be converted into energy, biofuels, and valuable products has been analysed for the rural areas of Poland. Results show that the annual biomass and organic waste potential is approximately 245 PJ (5.9 Mtoe). Finally, the concept of a biomass and organic waste refinery plant is proposed based on the locally available organic materials in rural areas. In particular, two models of biomass refinery plants are defined, namely, the Input/Output and Modular models. A four-module model is presented as a concept for building a refinery plant at the Institute of Technology and Life Sciences—National Research Institute in Poznan, Poland. The four modules include anaerobic digestion, gasification, transesterification, and alcoholic fermentation. The primary reason for combining different biomass conversion technologies is to reduce the cost of biomass products, which, currently, are more expensive than those obtained from oil and natural gas.
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14
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Saleh HM, Hassan AI. Use of heterogeneous catalysis in sustainable biofuel production. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2022-0041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Biofuel is a sustainable energy source that may use to replace fossil-based carbon dioxide and mitigate the adverse effects of exhaust emissions. Nowadays, we need to replace petroleum fuels with alternatives from environmentally sustainable sources of increasing importance. Biofuels derived from biomass have gained considerable attention, and thus most of the traditional methods that harm the environment and humans have retreated. Developing an active and stable heterogeneous catalyst is a step of utmost importance in the renewable liquid fuel technology. Thus, there is a great interest in developing methods for producing liquid fuels from non-edible sources. It may also be from dry plant tissues such as agricultural waste. Lignocellulosic biomass can be a sustainable source for producing renewable fuels and chemicals, as well as the replacement of petroleum products. Hence, the researchers aspired to synthesize new catalysts using a cheap technology developed to hydrolyze cellulose and then produce bioethanol without needing expensive enzymes, which may ultimately lead to a lower fuel price. In this paper, we will focus on the recent technologies used to produce sustainable biofuels through inexpensive incentives and innocuous to the environment.
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Affiliation(s)
- Hosam M. Saleh
- Radioisotope Department , Nuclear Research Center, Egyptian Atomic Energy Authority , Cairo , Egypt
| | - Amal I. Hassan
- Radioisotope Department , Nuclear Research Center, Egyptian Atomic Energy Authority , Cairo , Egypt
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15
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Nabgan W, Nabgan B, Ikram M, Jadhav AH, Ali MW, Ul-Hamid A, Nam H, Lakshminarayana P, Kumar A, Bahari MB, Khusnun NF. Synthesis and catalytic properties of calcium oxide obtained from organic ash over a titanium nanocatalyst for biodiesel production from dairy scum. CHEMOSPHERE 2022; 290:133296. [PMID: 34914962 DOI: 10.1016/j.chemosphere.2021.133296] [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: 06/21/2021] [Revised: 12/08/2021] [Accepted: 12/11/2021] [Indexed: 06/14/2023]
Abstract
The fatty acid methyl ester (FAME) production from dairy effluent scum as a sustainable energy source using CaO obtained from organic ash over titanium dioxide nanoparticles (TNPs) as the transesterification nano-catalyst has been studied. The physical and chemical properties of the synthesized catalysts were characterized, and the effect of different experimental factors on the biodiesel yield was studied. It was revealed that the CaO-TiO2 nano-catalyst displayed bifunctional properties, has both basic and acid phases, and leads to various effects on the catalyst activity in the transesterification process. These bifunctional properties are critical for achieving simultaneous transesterification of dairy scum oil feedstock. According to the reaction results, the catalyst without and with a low ratio of TNPs showed a low catalytic activity. In contrast, the 3Ca-3Ti nano-catalyst had the highest catalytic activity and a strong potential for reusability, producing a maximum biodiesel yield of 97.2% for a 3 wt% catalyst, 1:20 oil to methanol molar ratio for the dairy scum, and a reaction temperature of 70 °C for a period of 120 min under a 300 kPa pressure. The physical properties of the produced biodiesel are within the EN14214 standards.
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Affiliation(s)
- Walid Nabgan
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia.
| | - Bahador Nabgan
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Muhammad Ikram
- Solar Cell Applications Research Lab, Department of Physics, Government College University Lahore, 54000, Punjab, Pakistan.
| | - Arvind H Jadhav
- Centre for Nano and Material Science, JAIN University, Jain Global Campus, Bangalore, 562112, Karnataka, India.
| | - Mohamad Wijayanuddin Ali
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia.
| | - Anwar Ul-Hamid
- Core Research Facilities, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
| | - Hyungseok Nam
- Greenhouse Gas Laboratory, Korea Institute of Energy Research, Dajeon, 34129, Republic of Korea
| | | | - Ankit Kumar
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, UP, 221005, India
| | - Mahadi B Bahari
- Faculty of Science, Universiti Teknologi Malaysia, 81310, UTM Johor Bahru, Johor, Malaysia
| | - Nur Farahain Khusnun
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
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16
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Shahcheraghi N, Golchin H, Sadri Z, Tabari Y, Borhanifar F, Makani S. Nano-biotechnology, an applicable approach for sustainable future. 3 Biotech 2022; 12:65. [PMID: 35186662 PMCID: PMC8828840 DOI: 10.1007/s13205-021-03108-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 12/30/2021] [Indexed: 12/17/2022] Open
Abstract
Nanotechnology is one of the most emerging fields of research within recent decades and is based upon the exploitation of nano-sized materials (e.g., nanoparticles, nanotubes, nanomembranes, nanowires, nanofibers and so on) in various operational fields. Nanomaterials have multiple advantages, including high stability, target selectivity, and plasticity. Diverse biotic (e.g., Capsid of viruses and algae) and abiotic (e.g., Carbon, silver, gold and etc.) materials can be utilized in the synthesis process of nanomaterials. "Nanobiotechnology" is the combination of nanotechnology and biotechnology disciplines. Nano-based approaches are developed to improve the traditional biotechnological methods and overcome their limitations, such as the side effects caused by conventional therapies. Several studies have reported that nanobiotechnology has remarkably enhanced the efficiency of various techniques, including drug delivery, water and soil remediation, and enzymatic processes. In this review, techniques that benefit the most from nano-biotechnological approaches, are categorized into four major fields: medical, industrial, agricultural, and environmental.
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Affiliation(s)
- Nikta Shahcheraghi
- Department of Engineering, University of Science and Culture, Tehran, Iran
| | - Hasti Golchin
- Faculty of Biological Sciences, Kharazmi University, No.43.South Moffateh Ave., 15719-14911 Tehran, Iran
| | - Zahra Sadri
- Faculty of Biological Sciences, Kharazmi University, No.43.South Moffateh Ave., 15719-14911 Tehran, Iran
| | - Yasaman Tabari
- Faculty of Sciences and Advanced Technologies, Science and Culture University, 1461968151 Tehran, Iran
| | - Forough Borhanifar
- Faculty of Biological Sciences, Kharazmi University, No.43.South Moffateh Ave., 15719-14911 Tehran, Iran
| | - Shadi Makani
- Faculty of Biological Sciences, Kharazmi University, No.43.South Moffateh Ave., 15719-14911 Tehran, Iran
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17
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Ahmed SF, Mofijur M, Rafa N, Chowdhury AT, Chowdhury S, Nahrin M, Islam ABMS, Ong HC. Green approaches in synthesising nanomaterials for environmental nanobioremediation: Technological advancements, applications, benefits and challenges. ENVIRONMENTAL RESEARCH 2022; 204:111967. [PMID: 34450159 DOI: 10.1016/j.envres.2021.111967] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/09/2021] [Accepted: 08/19/2021] [Indexed: 05/27/2023]
Abstract
Green synthesis approaches of nanomaterials (NMs) have received considerable attention in recent years as it addresses the sustainability issues posed by conventional synthesis methods. However, recent works of literature do not present the complete picture of biogenic NMs. This paper addresses the previous gaps by providing insights into the stability and toxicity of NMs, critically reviewing the various biological agents and solvents required for synthesis, sheds light on the factors that affect biosynthesis, and outlines the applications of NMs across various sectors. Despite the advantages of green synthesis, current methods face challenges with safe and appropriate solvent selection, process parameters that affect the synthesis process, nanomaterial cytotoxicity, bulk production and NM morphology control, tedious maintenance, and knowledge deficiencies. Consequently, the green synthesis of NMs is largely trapped in the laboratory phase. Nevertheless, the environmental friendliness, biocompatibility, and sensitivities of the resulting NMs have wider applications in biomedical science, environmental remediation, and consumer industries. To the scale-up application of biogenic NMs, future research should be focused on understanding the mechanisms of the synthesis processes, identifying more biological and chemical agents that can be used in synthesis, and developing the practicality of green synthesis at the industrial scale, and optimizing the factors affecting the synthesis process.
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Affiliation(s)
- Shams Forruque Ahmed
- Science and Math Program, Asian University for Women, Chattogram, 4000, Bangladesh.
| | - M Mofijur
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, NSW, 2007, Australia; Mechanical Engineering Department, Prince Mohammad Bin Fahd University, Al Khobar, 31952, Saudi Arabia.
| | - Nazifa Rafa
- Environmental Sciences Program, Asian University for Women, Chattogram, 4000, Bangladesh
| | | | - Sidratun Chowdhury
- Science and Math Program, Asian University for Women, Chattogram, 4000, Bangladesh; Bangladesh Center for Advanced Studies (BCAS), Bangladesh
| | - Muntasha Nahrin
- Science and Math Program, Asian University for Women, Chattogram, 4000, Bangladesh
| | - A B M Saiful Islam
- Department of Civil and Construction Engineering, College of Engineering, Imam Abdulrahman Bin Faisal University, Dammam, 31451, Saudi Arabia
| | - Hwai Chyuan Ong
- Centre for Green Technology, Faculty of Engineering and Information Technology, University of Technology Sydney, NSW, 2007, Australia.
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18
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Biodiesel production from mixed oils: A sustainable approach towards industrial biofuel production. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100284] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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19
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Su G, Ong HC, Mofijur M, Mahlia TMI, Ok YS. Pyrolysis of waste oils for the production of biofuels: A critical review. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127396. [PMID: 34673394 DOI: 10.1016/j.jhazmat.2021.127396] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 09/16/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
The application of waste oils as pyrolysis feedstocks to produce high-grade biofuels is receiving extensive attention, which will diversify energy supplies and address environmental challenges caused by waste oils treatment and fossil fuel combustion. Waste oils are the optimal raw materials to produce biofuels due to their high hydrogen and volatile matter content. However, traditional disposal methods such as gasification, transesterification, hydrotreating, solvent extraction, and membrane technology are difficult to achieve satisfactory effects owing to shortcomings like enormous energy demand, long process time, high operational cost, and hazardous material pollution. The usage of clean and safe pyrolysis technology can break through the current predicament. The bio-oil produced by the conventional pyrolysis of waste oils has a high yield and HHV with great potential to replace fossil fuel, but contains a high acid value of about 120 mg KOH/g. Nevertheless, the application of CaO and NaOH can significantly decrease the acid value of bio-oil to close to zero. Additionally, the addition of coexisting bifunctional catalyst, SBA-15@MgO@Zn in particular, can simultaneously reduce the acid value and positively influence the yield and quality of bio-oil. Moreover, co-pyrolysis with plastic waste can effectively save energy and time, and improve bio-oil yield and quality. Consequently, this paper presents a critical and comprehensive review of the production of biofuels using conventional and advanced pyrolysis of waste oils.
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Affiliation(s)
- Guangcan Su
- Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Hwai Chyuan Ong
- Centre for Green Technology, Faculty of Engineering and Information Technology, University of Technology Sydney, NSW 2007, Australia; Future Technology Research Center, National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan.
| | - M Mofijur
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia; Mechanical Engineering Department, Prince Mohammad Bin Fahd University, Al Khobar 31952, Saudi Arabia
| | - T M Indra Mahlia
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Yong Sik Ok
- Korea Biochar Research Centre, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, South Korea
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20
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Anto S, Premalatha M, Mathimani T. Tertiary amine as an efficient CO 2 switchable solvent for extracting lipids from hypersaline microalgae. CHEMOSPHERE 2022; 288:132442. [PMID: 34606898 DOI: 10.1016/j.chemosphere.2021.132442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 09/04/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
Considering the momentous cost drivers in energy efficient algal biorefinery processes, a green alternative in extracting lipid from microalgae is anticipated. Switchable solvent system using tertiary amines namely DMBA (Dimethylbenzylamine), DMCHA (Dimethylcyclohexylamine), and DIPEA (Diisopropylethylamine) for lipid extraction from wet hypersaline microalgae was investigated in this study. Interestingly, present study showed that at 1:1 (v/v of fresh DMBA solvent: microalgal biomass), and for 1 h extraction time, the lipid yield was 41.9, 26.6, and 33.3% for Chlorella sp. NITT 05, Chlorella sp. NITT 02, and Picochlorum sp. NITT 04, respectively and for recovered DMBA solvent, at 1:1 (v/v) and for 1 h extraction time, the lipid yield was 40.8, 25.97, and 32%, respectively. Similarly, lipid extraction using DMCHA solvent for Chlorella sp. NITT 05, Chlorella sp. NITT 02, and Picochlorum sp. NITT 04 at 1:1 (v/v of solvent: microalgal biomass) and 1 h extraction time showed 34.28, 24.24 and 23.33% lipids, respectively for fresh solvent and 34.01, 24.24 and 23.18% for recovered solvent respectively; while DIPEA was not competent in lipid extraction from three tested microalgae. FAME profile revealed the presence of saturated fatty acids as 43.04%, 40.98%, 38.45% and monounsaturated fatty acids as 28.38%, 27.05%, 23.3% for Chlorella sp. NITT05, Picochlorum sp. NITT04, Chlorella sp. NITT02, respectively. This study attributes Chlorella sp. NITT05 and Picochlorum sp. NITT04 to be ideal algal species for biodiesel production.
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Affiliation(s)
- Susaimanickam Anto
- Department of Energy and Environment, National Institute of Technology, Tiruchirappalli, 620015, Tamil Nadu, India
| | - M Premalatha
- Department of Energy and Environment, National Institute of Technology, Tiruchirappalli, 620015, Tamil Nadu, India
| | - Thangavel Mathimani
- Department of Energy and Environment, National Institute of Technology, Tiruchirappalli, 620015, Tamil Nadu, India.
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21
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Ahmad M, Zafar M. Conversion of waste seed oil of Citrus aurantium into methyl ester via green and recyclable nanoparticles of zirconium oxide in the context of circular bioeconomy approach. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 136:310-320. [PMID: 34749274 DOI: 10.1016/j.wasman.2021.10.001] [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: 05/26/2021] [Revised: 09/18/2021] [Accepted: 10/01/2021] [Indexed: 06/13/2023]
Abstract
In the current scenario of energy crises and depleting fossil fuels, there is need of sustainable and cheaper interventions with green technology to address these obstinate glitches. Biodiesel produced from waste, non-edible seed oils is a cleaner, green and alternate source of fuel for diesel engines which can possibly add to circular bioeconomy. In this study, Citrus aurantium a novel, nonedible and waste seed oil (38% w/w) producing feedstock was subjected to biodiesel synthesis using recyclable zirconium oxide nano particles synthesized with Alternanthera pungens aqueous leave extract. Maximum yield of 94% was obtained through optimized reaction parameters of methanol to oil molar ratio 6:1, reaction time 120 min, temperature 87.5 °C and catalyst loading of 0.5 wt% using Response Surface Methodology. Green nano particles of zirconium oxide were characterized via Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD) and Energy diffraction X-Ray (EDX) while; physiochemical characterization of synthesized biodiesel was carried through Fourier-transform infrared spectroscopy (FTIR), Gas Chromatography/Mass spectroscopy (GC/MS), and Nuclear magnetic resonance (NMR 1H and 13C). Fuel properties of methyl ester met international standards of ASTM D-6571, EN 14214 and China GB/T 20828-2007. It was concluded that biodiesel production from Citrus aurantium waste and non-edible seed oil can be efficiently employed for generation of renewable energy which would further provide assistance in transformation of linear economy to circular bioeconomy.
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Affiliation(s)
- Mushtaq Ahmad
- Department of Plant Sciences, Quaid- i- Azam University, Islamabad 45320, Pakistan
| | - Muhammad Zafar
- Department of Plant Sciences, Quaid- i- Azam University, Islamabad 45320, Pakistan
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22
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Current State and Perspectives on Transesterification of Triglycerides for Biodiesel Production. Catalysts 2021. [DOI: 10.3390/catal11091121] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Triglycerides are the main constituents of lipids, which are the fatty acids of glycerol. Natural organic triglycerides (viz. virgin vegetable oils, recycled cooking oils, and animal fats) are the main sources for biodiesel production. Biodiesel (mono alkyl esters) is the most attractive alternative fuel to diesel, with numerous environmental advantages over petroleum-based fuel. The most practicable method for converting triglycerides to biodiesel with viscosities comparable to diesel fuel is transesterification. Previous research has proven that biodiesel–diesel blends can operate the compression ignition engine without the need for significant modifications. However, the commercialization of biodiesel is still limited due to the high cost of production. In this sense, the transesterification route is a crucial factor in determining the total cost of biodiesel production. Homogenous base-catalyzed transesterification, industrially, is the conventional method to produce biodiesel. However, this method suffers from limitations both environmentally and economically. Although there are review articles on transesterification, most of them focus on a specific type of transesterification process and hence do not provide a comprehensive picture. This paper reviews the latest progress in research on all facets of transesterification technology from reports published by highly-rated scientific journals in the last two decades. The review focuses on the suggested modifications to the conventional method and the most promising innovative technologies. The potentiality of each technology to produce biodiesel from low-quality feedstock is also discussed.
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23
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An Overview of Biodiesel Production via Calcium Oxide Based Catalysts: Current State and Perspective. ENERGIES 2021. [DOI: 10.3390/en14133950] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Biodiesel is a clean, renewable, liquid fuel that can be used in existing diesel engines without modification as pure or blend. Transesterification (the primary process for biodiesel generation) via heterogeneous catalysis using low-cost waste feedstocks for catalyst synthesis improves the economics of biodiesel production. Heterogeneous catalysts are preferred for the industrial generation of biodiesel due to their robustness and low costs due to the easy separation and relatively higher reusability. Calcium oxides found in abundance in nature, e.g., in seashells and eggshells, are promising candidates for the synthesis of heterogeneous catalysts. However, process improvements are required to design productive calcium oxide-based catalysts at an industrial scale. The current work presents an overview of the biodiesel production advancements using calcium oxide-based catalysts (e.g., pure, supported, and mixed with metal oxides). The review discusses different factors involved in the synthesis of calcium oxide-based catalysts, and the effect of reaction parameters on the biodiesel yield of calcium oxide-based catalysis are studied. Further, the common reactor designs used for the heterogeneous catalysis using calcium oxide-based catalysts are explained. Moreover, the catalytic activity mechanism, challenges and prospects of the application of calcium oxide-based catalysts in biodiesel generation are discussed. The study of calcium oxide-based catalyst should continue to be evaluated for the potential of their application in the commercial sector as they remain the pivotal goal of these studies.
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24
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Fatahi Y, Ghaempanah A, Maˈmani L, Mahdavi M, Bahadorikhalili S. Palladium supported aminobenzamide modified silica coated superparamagnetic iron oxide as an applicable nanocatalyst for Heck cross-coupling reaction. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121711] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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