Article
Energy & Fuels
Kamaldeep Sharma, Daniele Castello, Muhammad Salman Haider, Thomas Helmer Pedersen, Lasse Aistrup Rosendahl
Summary: This study demonstrates the potential of co-hydrodeoxygenation of partially upgraded bio-oil obtained from hydrothermal liquefaction with rapeseed oil to produce bio-derived drop-in fuel. Results showed that temperature and WHSV are important parameters for achieving complete deoxygenation and controlling the properties of co-processed bio-oils. The quality of co-processed bio-oils obtained under optimized conditions showed improved characteristics compared to hydroprocessed oils produced from pure rapeseed oil.
Article
Chemistry, Physical
Bruno C. Magalhaes, Ruben Checa, Chantal Lorentz, Mathieu Prevot, Pavel Afanasiev, Dorothee Laurenti, Christophe Geantet
Summary: Global energy demand and environmental concerns have led to a growing emphasis on fuel production from renewable resources. Microalgae offer an attractive alternative carbon source. This study investigated the hydroconversion of bio-oil derived from hydrothermal liquefaction of microalgae using supported catalysts. NiW sulfide catalysts proved to be the most efficient, producing a hydrotreated oil with superior properties. The results suggest that different catalysts promote different reaction pathways, contributing to the conversion of refractory compounds.
Article
Energy & Fuels
Menghan Shi, Song Sun, Qi Zhou, Yupeng Yuan, Xiao Lian, Jiaping Wang, Yingqiang Sun
Summary: Tigernut, a tuber grown in non-arable land of Xinjiang, China, is a potential feedstock for biofuel production due to its high lipid content and low water and land requirements. Previous studies have mainly focused on transesterification for biodiesel production, limiting the bio-oil yield. This study examines the hydrothermal liquefaction (HTL) of tigernut biomass using MgAl-layered double hydroxides as catalysts. The results show that increasing reaction temperature and optimizing Mg/Al ratio enhance both bio-oil yield and deoxygenation. MgAl-LDHx catalysts show promise for the decomposition of tigernut and hydrodeoxygenation of bio-oil, providing a potential strategy for bio-oil production.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Biotechnology & Applied Microbiology
Bruno da Costa Magalha, Ruben Checa, Chantal Lorentz, Pavel Afanasiev, Dorothee Laurenti, Christophe Geantet
Summary: In this study, Chlorella sorokiniana microalgae was converted into bio-oil by hydrothermal liquefaction (HTL) at 300°C and 10 MPa. The bio-oil was then upgraded using a sulfided NiW/Al2O3 catalyst at three different temperatures. It was found that the HTL reaction converted the lipids in the biomass into fatty acids, which were further converted into n-alkanes during the upgrading stage. The upgraded bio-oil showed a higher heating value and lower molar mass, with the removal of oxygen, nitrogen, and sulfur compounds.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Energy & Fuels
Chuang Yang, Shuzhong Wang, Zhuohang Jiang, Jianna Li, Chao He, Tiantian Xu, Donghai Xu
Summary: Hydrothermal liquefaction was used to convert animal carcasses into biocrude oil, which was then hydrotreated with various catalysts to improve its quality. CoMo/Al2O3 showed better catalytic performance in terms of nitrogen and oxygen removal, leading to an upgraded biocrude oil with higher heating value.
Article
Energy & Fuels
Kathirvel Brindhadevi, Susaimanickam Anto, Eldon R. Rene, Manigandan Sekar, Thangavel Mathimani, Nguyen Thuy Lan Chi, Arivalagan Pugazhendhi
Summary: This review focuses on the conversion of various microalgal and cyanobacterial biomasses into bio-oil and solid char products through pyrolysis and hydrothermal liquefaction. The impact of reaction temperature on the quantity and quality of bio-oil and solid char obtained from pyrolysis and hydrothermal liquefaction is comprehensively discussed in the review, providing opportunities for further research in this area.
Article
Energy & Fuels
Venkataraman Ramachandran, M. K. Shriram, E. Reon Mathew, Kaushik Ramkumar, Dhakshinamoorthy Gnana Prakash, Chitra Devi Venkatachalam
Summary: The research focused on the use of natural Sphagnum peat moss as an effective oil sorbent and valorized the oil-soaked peat to produce bio-oil through hydrothermal liquefaction. Experimental results showed high sorption capacity of peat sorbent for various oil samples, indicating its potential as a source of bio-oil feedstock and biofuel.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Review
Energy & Fuels
J. Arun, R. Raghu, S. Suhail Madhar Hanif, P. G. Thilak, D. Sridhar, N. Nirmala, S. S. Dawn, R. Sivaramakrishnan, Nguyen Thuy Lan Chi, Arivalagan Pugazhendhi
Summary: Availability of renewable biomass, especially algae biomass, is crucial for addressing environmental and health issues caused by fossil-based energy consumption. In this review, the cultivation, thermochemical conversion, and upgrading of algae biomass are explored. Photo bioreactors and raceway open ponds are preferred for microalgae cultivation, while hydrothermal liquefaction, pyrolysis, and co-liquefaction are commonly used for algae biomass processing. Upgrading techniques, such as catalytic cracking and hydrodeoxygenation, play important roles in improving the quality of algae biofuels.
Article
Energy & Fuels
Christian Kluepfel, Benjamin Herklotz, Patrick Biller
Summary: Hydrothermal liquefaction (HTL) is a promising technology for converting waste biomass into energy dense biocrude oil and nutrient-rich solid phase. In this study, the HTL behavior of digestates from urban and agricultural biogas plants was investigated, focusing on the influence of biochemical composition, temperature, and reaction time on biocrude yield, composition, energy recovery, and nutrient mobility. Results showed that the straw/manure digestate achieved a maximum energy recovery of 43% and a carbon recovery of 40%. The composition of the biocrude was heavily influenced by the feedstock composition, while high yields of main nutrients (Ca, Mg, Fe, and P) to the solid residue were observed.
Review
Energy & Fuels
Sathish Raam Ravichandran, Chitra Devi Venkatachalam, Mothil Sengottian, Sarath Sekar, Sabariswaran Kandasamy, Kesav Prasath Ramasamy Subramanian, Kirubakaran Purushothaman, Aravindan Lavanya Chandrasekaran, Mathiyazhagan Narayanan
Summary: This review discusses the thermochemical conversion of algal biomass into bio-oil using hydrothermal liquefaction. The yield can be altered by adjusting parameters such as temperature, pressure, and catalyst quantity. The bio-oil is of great significance as a fuel source and value-added chemical source.
Article
Energy & Fuels
Senthil Nagappan, Rahul R. Bhosale, Dinh Duc Nguyen, Nguyen Thuy Lan Chi, Vinoth Kumar Ponnusamy, Chang Soon Woong, Gopalakrishnan Kumar
Summary: Hydrothermal liquefaction (HTL) is an effective method for converting biomass into biofuel, but the yield and quality of bio-oil are not sufficient for commercialization under normal conditions, highlighting the need to select appropriate catalysts. Catalytic HTL faces barriers that need to be overcome, including catalyst selection and impact on other products.
Article
Engineering, Environmental
Juliano Souza dos Passos, Aisha Matayeva, Patrick Biller
Summary: Crop and animal residues produced by agribusiness are major waste streams globally, with wheat straw and cow manure being significant contributors. This study demonstrates that hydrothermal liquefaction (HTL) can efficiently convert these materials into biocrude, and combining the processing of these feedstocks can greatly enhance biocrude production and carbon recovery.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Bin Cao, Shuanhu Hu, Kai Zhu, Cheng Pan, Fatma Marrakchi, Jun Ni, Chuan Yuan, Lili Qian, Hao Chen, Jianping Yuan, Abdelfatah Abomohra, Pietro Bartocci, Francesco Fantozzi, Shuang Wang
Summary: The effects of biochemical components and processing variables on the product yields and biofuel quality during fast hydrothermal liquefaction of CO2-tolerant microalgae were investigated. Results showed that the maximum bio-oil yield was obtained at specific conditions, and ethanol concentration had the highest impact on bio-oil yield. Furthermore, the increase of ethanol concentration improved the bio-oil quality by reducing carboxylic acids and nitrogen-containing compounds while enhancing the esters content. Fast hydrothermal liquefaction is a promising approach to produce high-quality biofuels from microalgae.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Agricultural Engineering
Jasim M. Al-juboori, David M. Lewis, Peter J. Ashman, Tony Hall, Philip J. van Eyk
Summary: The accumulation of biosolids has led to harmful pollutants and negative impacts on nearby ecosystems and communities, necessitating immediate management and regulation. Hydrothermal liquefaction is a promising technique for converting biosolids into renewable crude oil. This study aims to analyze the composition of biosolids and quantify the effects of composition and reaction conditions on product distributions in hydrothermal liquefaction.
BIOMASS & BIOENERGY
(2023)
Review
Green & Sustainable Science & Technology
Hossein Shahbeik, Hamed Kazemi Shariat Panahi, Mona Dehhaghi, Gilles J. Guillemin, Alireza Fallahi, Homa Hosseinzadeh-Bandbafha, Hamid Amiri, Mohammad Rehan, Deepak Raikwar, Hannes Latine, Bruno Pandalone, Benyamin Khoshnevisan, Christian Sonne, Luigi Vaccaro, Abdul-Sattar Nizami, Vijai Kumar Gupta, Su Shiung Lam, Junting Pan, Rafael Luque, Bert Sels, Wanxi Peng, Meisam Tabatabaei, Mortaza Aghbashlo
Summary: This review explores the production of biocrude oil from biomass feedstocks through the process of hydrothermal liquefaction (HTL). It discusses the impact of process parameters on the quality, quantity, cost, and environmental impacts of biofuels. The review also highlights the challenges and prospects for the future development of biocrude oil.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
