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Fluid dynamics analysis and pyrolysis of brewer’s spent grain in a spouted bed reactor

Particuology 2019年第1期17卷 199-207页

作者： Marcos A.s. Barrozo Lidja D.M.s. Borel Taísa s. Lira Carlos H. Ataíde school of Chemical Engineering Federal University of UberlandiaBrazil Department of Engineering and Technologies Federal University of Espirito SantoBrazil

brewer’s spent grain (BsG) is a large-scale agroindustrial waste that could be more efficiently utilized. This waste is composed of lignocellulosic material and so may serve as a good source of biomass for thermochemical conversion. The present study investigated the fluid dynamics behavior of mixtures of sand and BsG in a spouted bed to assess the viability of the thermochemical conversion of this biomass via fast pyrolysis. Fluid dynamics analyses were performed while varying the mass fraction of BsG (6–80%) and the static bed height (6.6–13.4 cm). Empirical equations for predicting the minimum spouting conditions and the mixing index were obtained using a regression technique, and the selected fluid dynamics parameters were employed in the spouted bed pyrolysis. The bio-oil resulting from this process was rich in phenolic compounds, various nitrogenated compounds (representing precursors for pharmaceuticals) and long-chain hydrocarbons. The products obtained from the analytical and spouted bed pyrolysis processes were also compared.

关键词： brewer’s spent grain Agroindustrial residue spouted bed Fast pyrolysis Particle mixing

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The Economic Potential of brewer’s spent Grain (BsG) as a Biomass Feedstock

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Advances in Chemical Engineering and science 2014年第3期4卷 308-318页

作者： Jack Buffington Division of Industrial Marketing Royal Institute of Technology Stockholm Sweden

This paper analyzes a pro-forma economic market and supply chain system for the reuse of a lignocellulose (brewer’s spent grain) in an industrial biotechnology environment. An extant literature review was conducted, followed by a technical analysis of BsG, and the development of a supply chain system and economic market analysis based upon a participant brewing company and industry experts. In this paper, it was found that, even with the potential for future improvements in the conversion of brewer’s spent grain (BsG) from an efficiency standpoint, this industrial residual is supply chain prohibitive as a biofeedstock in comparison to other lignocellulose materials, therefore, centralized market relationships would not be advantageous for sellers and buyers. Future research should consider the viability of centralized supply chain structures for alternatives that may exist as future bio-feedstocks.

关键词： Industrial Biotechnology Lignocellulose supply Chain brewer’s spent Grain (BsG)

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