Article
Energy & Fuels
Mohammad Reza Moazezi, Hengameh Bayat, Omid Tavakoli, Ahmad Hallajisani
Summary: This study focuses on optimizing the yield and performance of bio-oil from hydrothermal liquefaction of Chlorella vulgaris, a type of microalgae. By manipulating reaction conditions, using catalysts, and employing thermodynamic modeling, the researchers successfully improved the bio-oil production process.
Article
Energy & Fuels
Javier A. Jimenez Forero, Tuyen H. T. Tran, Tana Tana, Adrian Baker, Jorge Beltramini, William O. S. Doherty, Lalehvash Moghaddam
Summary: This study investigated the effect of solvent on the stability of bio-oils produced from the hydrothermal liquefaction of sugarcane bagasse. It was found that the ethanol/water solvent mixture produced the most stable bio-oil compared to other solvents. The light oils fractionated by solvent extraction were also more stable than their corresponding bio-oils. The stabilities of the oils were related to alkylation, esterification, and acetalization reactions. This study demonstrated that the HTL of sugarcane bagasse in the presence of ethanol/water produces high-quality oils with long shelf-lives.
Article
Engineering, Environmental
Jayaraman Rajagopal, Kannapan Panchamoorthy Gopinath, Rajendran Neha, Krishnan Aakriti, Ramesh Sai Jayaraman, Jayaseelan Arun, Arivalagan Pugazhendhi
Summary: This study investigates the production of bio-hydrogen from household mixed waste through hydrothermal gasification (HTG) and hydrothermal liquefaction (HTL) experiments. The results show that both HTG and HTL processes can yield high amounts of hydrogen and bio-oil under specific temperature and solvent to waste ratios, providing support for the utilization of household mixed waste as an energy source.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Agricultural Engineering
Weijin Zhang, Jie Li, Tonggui Liu, Songqi Leng, Lihong Yang, Haoyi Peng, Shaojian Jiang, Wenguang Zhou, Lijian Leng, Hailong Li
Summary: Machine learning algorithms were applied to predict and optimize bio-oil production with algae compositions and HTL conditions as inputs. Gradient boosting regression showed better performance than random forest for prediction tasks. The importance of operating conditions was higher than algae characteristics for the three targets according to model-based interpretation.
BIORESOURCE TECHNOLOGY
(2021)
Article
Energy & Fuels
Jianwen Lu, Guifang Fan, Mingde Yang, Yulong Wu
Summary: The interaction between protein and glucose influences the nitrogen content and oxygen content in the bio-oil during HTL, while the carbon in glucose does not participate in the formation of certain compounds. The results provide insight into the interaction mechanism between protein and glucose for further studies.
Article
Chemistry, Analytical
Hao Li, Zhen Dong, Bao Wang, Wenfu Wu, Maojiong Cao, Yuanhui Zhang, Zhidan Liu
Summary: Catalytic pyrolysis was used to upgrade raw biocrude from hydrothermal liquefaction of Spirulina, resulting in improved quality of the bio-oil without the need for costly hydrogen. The addition of Fe-HZSM-5 catalyst significantly increased the carbon content and higher heating value of the upgraded bio-oil. Furthermore, the composition of the bio-oil was altered, with a reduction in nitrogen-containing compounds and an increase in hydrocarbons.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Agricultural Engineering
Shuang Wang, Shuang Zhao, Xiaoxue Cheng, Lili Qian, Bahram Barati, Xun Gong, Bin Cao, Chuan Yuan
Summary: This study examined the conversion of Enteromorpha clathrata into bio-oil through hydrothermal liquefaction, finding that a two-step reaction method can increase bio-oil yield and improve quality.
BIORESOURCE TECHNOLOGY
(2021)
Article
Energy & Fuels
Ankit Jadhav, Israr Ahmed, A. G. Baloch, Harshit Jadhav, Sabzoi Nizamuddin, M. T. H. Siddiqui, Humair Ahmed Baloch, Sundus Saeed Qureshi, Nabisab Mujawar Mubarak
Summary: This study reports hydrothermal liquefaction technology carried out on local Malaysian oil palm fronds to produce solid bio-char and liquid bio-oil. Observations showed that bio-oil yield percentage increased and bio-char yield percentage decreased with higher reaction temperature and time, leading to improved combustion properties of bio-char and bio-oil. Major chemical compounds identified in bio-oil by GC-MS were phenolic compounds and their derivatives, alcohols, ketones, and esters.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Chemistry, Multidisciplinary
Bulutcem Ocal, Asli Yuksel
Summary: The rapidly increasing global energy demand has led to the need for finding green, renewable, and sustainable alternative sources of energy. Bio-oil, derived from biomasses via liquefaction, is a promising candidate to replace fossil fuels. In this study, the thermal liquefaction of oak wood particles was carried out using different solvents, and the results showed that 1,4-dioxane yielded the highest bio-oil production.
Article
Energy & Fuels
Jiashun Hu, Xuanying Chen, Xiaoxue Yang, Ruosong Li, Le Wu
Summary: As bio-energy is the only carbon-containing renewable energy source, its development and utilization are crucial to addressing the energy crisis and the greenhouse effect. In order to reduce the production cost of bio-fuels, bio-oil derived from biomass and algae can be co-processed with vacuum gas oil in an existing catalytic cracking unit, resulting in the production of gasoline and diesel products with renewable carbon. Techno-economic analysis revealed that the co-processing scenario involving hydrothermal liquefaction provided a clear economic advantage.
Article
Energy & Fuels
James R. Keiser, Michael P. Brady, Jiheon Jun, Dino Sulejmanovic, Michael D. Kass
Summary: The selection of corrosion-resistant and cost-effective structural materials for biomass-derived oil production, upgrading, and storage has been extensively studied in our laboratory. The wide variety of biomass resources and liquefaction techniques result in products with diverse properties. This paper discusses the materials challenges in three distinct areas. Austenitic stainless steels have generally performed well in the production process at temperatures ranging from 350 to 550 degrees C, although issues such as thicker oxide scales and intergranular attack have been observed. For storage and transport of bio-oil products, organic acids present in the raw bio-oils can cause corrosion to carbon and low-alloy steels. Furthermore, certain subsequent processing methods can lead to corrosion of common austenitic stainless steels during exposure to sulfidizing gas at elevated temperatures. The study identifies cost-effective and sufficiently corrosion-resistant materials for each environment.
Article
Green & Sustainable Science & Technology
Jianwen Lu, Zhenzhong Zhang, Guifang Fan, Lilong Zhang, Yulong Wu, Mingde Yang
Summary: The study demonstrated that carbon nanotubes are promising catalysts for improving the quality of bio-oil from hydrothermal liquefaction of microalgae, as they can increase hydrogen content, reduce oxygen, nitrogen, and sulfur content, as well as enhance higher heating value and low-boiling fraction of the bio-oil.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Yongjie Ding, Bailin Shan, Xuejuan Cao, Yugui Liu, Mingxuan Huang, Boming Tang
Summary: This study used lignocellulose to prepare bio oil by hydrothermal liquefaction method and then mixed it with petroleum asphalt to produce bio asphalt, which showed better thermal stability and potential as a pavement material.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Sabzoi Nizamuddin, Humair Ahmed Baloch, Muhammad Jamal, Srinivasan Madapusi, Filippo Giustozzi
Summary: Pavement recycling is a promising solution for addressing the ageing problems of asphalt roads, and this study investigates the use of bio-oil from waste plastics as a rejuvenator for aged bitumen. The results show that the addition of bio-oil significantly softens the aged binder and improves its thermo-chemical and rheological performance. This has important implications for recycling more asphalt using non-recyclable materials.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Environmental Sciences
Jian Yang, Chen Hong, Yi Xing, Zixuan Zheng, Zaixing Li, Xiumei Zhao, Chenhao Qi
Summary: The research findings indicate that the focus of HTL technology lies in the selection of reaction conditions and catalysts. Compared with homogeneous catalysts, the study of HTL using heterogeneous catalysts has progressed more rapidly. By promoting resource recovery, organic waste such as food waste and sludge can now be used as raw materials for HTL for bio-oil.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Sana Kordoghli, Besma Khiari, Maria Paraschiv, Fethi Zagrouba, Mohand Tazerout
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Chemistry, Physical
Chantal Kassargy, Sary Awad, Gaetan Burnens, Gaurav Upreti, Khalil Kahine, Mohand Tazerout
APPLIED CATALYSIS B-ENVIRONMENTAL
(2019)
Article
Energy & Fuels
Loubna Hadhoum, Gaetan Burnens, Khaled Loubar, Mourad Balistrou, Mohand Tazerout
Article
Environmental Sciences
Amal Bellahcene, Madjid Hachemi, Jean-Francois Largeau, Lyes Tarabet, Gaetan Burnens, Karim Khiari, Mohand Tazerout
Summary: Oil sludge conversion into fuel for diesel engines through thermal/catalytic pyrolysis has been studied, with promising results showing a high recovery of liquid fraction, optimal fuel quality with the use of Al2O3 catalyst, and properties close to diesel fuel standards. Further tests are needed to assess engine performance and emissions control.
WASTE AND BIOMASS VALORIZATION
(2021)
Article
Environmental Sciences
Marwa Ourak, Mylene Marin Gallego, Gaetan Burnens, Jean Francois Largeau, Sana Kordoghli, Fethi Zagrouba, Mohand Tazerout
Summary: This study investigated the mechanism and product yields of thermal pyrolysis of scrap truck tires, focusing on the effects of key parameters on the quantity and quality of liquid products. It was found that using carrier gas significantly improved the pyrolysis liquid yield, while longer residence time and larger empty volume promoted product diffusion.
WASTE AND BIOMASS VALORIZATION
(2021)
Article
Energy & Fuels
Loubna Hadhoum, Sary Awad, Gaetan Burnens, Maria Paraschiv, Khaled Loubar, Mohand Tazerout
Summary: This study successfully optimized the supercritical liquefaction process to produce rapeseed bio-oil with low viscosity, highlighting the significant influence of reaction temperature and methanol/biomass ratio. The bio-oil exhibited high yield and heating value, making it suitable for biodiesel production.
BIOENERGY RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Florin Nenciu, Maria Paraschiv, Radu Kuncser, Constantin Stan, Diana Cocarta, Valentin Nicolae Vladut
Summary: New global directions in agriculture focus on utilizing agricultural land resources for food production, leaving marginal lands as potential opportunities for second-generation energy crops. Sweet sorghum, with its high biomass and sugar yield, as well as adaptability to different climates, shows promise for biofuel production on marginal lands. However, challenges in agronomics, techno-economics, and methodology need to be addressed to ensure sustainable and profitable feedstock production. This study evaluates the development characteristics and bioethanol generation potential of sweet sorghum crops grown on both marginal and regular land, with pyrolysis used to maximize biofuel and chemical productivity. The resulting charcoal from the process can also be used as soil amendment to improve marginal land quality over time.
Article
Chemistry, Multidisciplinary
Carmen Gabriela Constantin, Mihaela Maria Zugravu, Mihaela Georgescu, Mugurasi Florin Constantin, Andrei Mot, Maria Paraschiv, Aurora Dobrin
Summary: Intensive agriculture and climate change have caused nutrient soil depletion and salinization of agricultural lands, affecting the food industry. Therefore, finding sustainable alternative solutions that meet consumer needs and food production is crucial. Salt-tolerant plants, such as Salicornia europaea L., show promise as a solution. This study investigated the adaptability of Salicornia europaea L. on different cultivation substrates by monitoring plant indicators and highlighted the correlation between polyphenol and mineral contents.
APPLIED SCIENCES-BASEL
(2023)
Proceedings Paper
Green & Sustainable Science & Technology
Loubna Hadhoum, Khaled Loubar, Maria Paraschiv, Sary Awad, Mohand Tazerout
Summary: This paper investigated the conversion of sunflower seeds to bio-char through the hydrothermal liquefaction (HTL) process. The optimized conditions for bio-char production were determined and validated, resulting in high bio-char yield, high heating value, and high carbon content. Derivative thermogravimetry analysis revealed an improvement in the thermal stability of the bio-char after the HTL process.
SUSTAINABLE ENERGY-WATER-ENVIRONMENT NEXUS IN DESERTS
(2022)
Review
Plant Sciences
Carmen Gabriela Constantin, Aurora Dobrin, Andrei Mot, Carmen Cimpeanu, Maria Paraschiv, Liliana Badulescu
Summary: This review discusses the current situation of chromium contamination in agricultural systems, exploring the bioaccumulation, toxicity, and quantitative analysis methods of chromium in different organisms.
SCIENTIFIC PAPERS-SERIES B-HORTICULTURE
(2021)
Article
Plant Sciences
Carmen-Gabriela Constantin, Aurora Dobrin, Maria Paraschiv
Summary: The paper analyzes the variation of biochemical compounds in Ribes nigrum L. fruits during the maturation process, showing significant differences in total phenolic content, total flavonoid content, and free radical scavenging activity at different phenological stages.
SCIENTIFIC PAPERS-SERIES B-HORTICULTURE
(2021)
Article
Plant Sciences
Carmen Constantin, Loubna Hadhoum, Mihaela Zugravu, Muguras Constantin, Aurora Dobrin, Maria Paraschiv, Liliana Badulescu
SCIENTIFIC PAPERS-SERIES B-HORTICULTURE
(2020)