Special Collection: Advances in Biomass Pretreatment and Conversion Technologies

Abstract

Abstract. This article summarizes the invited manuscripts published on advances in biomass pretreatment and conversion technologies, a special collection in this issue of Transactions of the ASABE. This special collection consists of seven articles that cover topics ranging from physical and mechanical properties of biomass stems to various novel pretreatment technologies for producing sugar mixtures and biofuels. The physical characteristics and pretreatment of biomass are critical to reduce structural heterogeneity and improve efficient downstream processing and conversion of biomass. This special collection provides examples of novel pretreatment technologies, such as liquid ammonia fiber expansion and torrefaction, and their impacts on downstream conversion. In addition, it explores the impacts of alkaline and acid pretreatments on the structural components of biomass for efficient biofuel conversion. Two of the articles specifically focus on determining the physical and mechanical properties of selected biomass stems in relation to efficient cutting and safe storage. A recent development in densification of biomass by granulation technology is a promising way to improve the bulk flow properties for efficient handling, transport, and storage. This special collection is a drop in the ocean of recent accomplishments in bioenergy engineering research, and opportunities exists for agricultural and biological engineers to work across disciplines to facilitate fast commercialization of biomass technologies in the U.S. and around the world.