Review on sustainable production of biochar through hydrothermal liquefaction: Physico-chemical properties and applications. (August 2020)

• Record Type: Journal Article
• Authors: Ponnusamy, Vinoth Kumar; Nagappan, Senthil; Bhosale, Rahul R; Lay, Chyi-How; Duc Nguyen, Dinh; Pugazhendhi, Arivalagan; Chang, Soon Woong; Kumar, Gopalakrishnan
• Is Part Of: Bioresource technology. Volume 310(2020)
• Publication Date: 2020-08
• Subjects: Biochar -- Hydrothermal liquefaction -- Adsorption -- Catalyst -- Bio-oil; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2020.123414
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Hydrothermal liquefaction conditions are key to biochar yield and characteristics. Hydrothermal liquefaction biochar characteristics from different feedstocks are discussed. Hydrothermal liquefaction biochar retains essential functional groups than other biochars. Mechanism of biochar formation is explained. Abstract: This review examines in detail the production and characteristics of biochar resulting from hydrothermal liquefaction. Specifically, the impact of feedstocks and different process parameters on the properties and yield of biochar by hydrothermal liquefaction has been thoroughly studied. Hydrothermal liquefaction derived biochars, relative to biochars from high-temperature thermochemical processes retain critical functional groups during carbonization and are therefore promising for a wide range of applications. Most of the review's efforts are to study possible hydrothermal liquefaction biochar applications in various fields, including fuel, metal and dye adsorption, pollutant reduction, animal feed, and biogas catalyst. The feasibility of biochar through the hydrothermal liquefaction process has been analysed via life-cycle assessment and energy evaluation. The article concludes with a brief discussion on possible issues and strategies for the sustainable development of hydrothermal liquefaction-based biochar.