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Comminution of Dry Lignocellulosic Biomass, a Review: Part I. From Fundamental Mechanisms to Milling Behaviour
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Bioengineering 2018, 5(3), 50; https://doi.org/10.3390/bioengineering5030050

Comminution of Dry Lignocellulosic Biomass: Part II. Technologies, Improvement of Milling Performances, and Security Issues

UMR Ingénierie des Agropolymères et des Technologies Emergentes (IATE), University of Montpellier, CIRAD, INRA, Montpellier SupAgro, 34060 Montpellier CEDEX 01, France
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Received: 11 April 2018 / Revised: 11 June 2018 / Accepted: 20 June 2018 / Published: 22 June 2018
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Abstract

Lignocellulosic feedstocks present a growing interest in many industrial processes as they are an ecological alternative to petroleum-based products. Generally, the size of plant raw materials needs to be reduced by milling step(s), to increase density, facilitate transport and storage, and to increase reactivity. However, this unit operation can prove to be important in term of investments, functioning costs, and energy consumption if the process is not fully adapted to the histological structure of the plant material, possibly challenging the profitability of the whole chain of the biomass conversion. In this paper, the different technologies that can be used for the milling of lignocellulosic biomass were reviewed and different avenues are suggested to improve the milling performances thanks to thermal pretreatments. Based on examples on wheat straw milling, the main points to take into consideration in the choice of a milling technologies have been highlighted in regards to the specifications of ground powder. A specific focus on the hazards associated to the milling and the manipulation of fine biomass particles is also realized at the end of the paper from the perspective of industrial applications. View Full-Text
Keywords: milling; plant materials; grinding; energy consumption; torrefaction; cryogenic milling; atex explosion hazard milling; plant materials; grinding; energy consumption; torrefaction; cryogenic milling; atex explosion hazard
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Mayer-Laigle, C.; Rajaonarivony, R.K.; Blanc, N.; Rouau, X. Comminution of Dry Lignocellulosic Biomass: Part II. Technologies, Improvement of Milling Performances, and Security Issues. Bioengineering 2018, 5, 50.

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