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Aglomeration of acacia mangium biomass

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The aim of this study was to analyze the effects of temperature (T), moisture content (MC) and particle size (x) on Acacia mangium biomass and also to find the optimal conditions of the densification process for producing tablet with high density. Acacia mangium biomass was compressed in load cell by hydraulic piston press with 25 mm diameter. | Vietnam Journal of Science and Technology 56 (2) (2018) 196-207 DOI: 10.15625/2525-2518/56/2/9293 AGGLOMERATION OF ACACIA MANGIUM BIOMASS Trinh Van Quyen, Sándor Nagy Institute of Raw Material Preparation and Environmental Processing, University of Miskolc, H-3515 Miskolci Egyetemváros, Miskolc, Hungary Email: trinhquyennd@gmail.com Received: 9 March 2017; Accepted for publication: 29 January 2018 Abstract. The aim of this study was to analyze the effects of temperature (T), moisture content (MC) and particle size (x) on Acacia mangium biomass and also to find the optimal conditions of the densification process for producing tablet with high density. Acacia mangium biomass was compressed in load cell by hydraulic piston press with 25 mm diameter. Effect of independent variable, including temperature (20 oC to 120 oC), moisture content conditions (5.1 wt.% and 18.1 wt.% in the case of x < 1 mm, and 5.3 wt.% in the case of x < 2 mm) were investigated. The results showed that at constant pressure, increasing temperature (T) resulted in higher density of tablets and also increasing moisture content resulted in higher density of tables. Tablets made from raw material with smaller particle size have lower strength than those made from material with larger particle size. Keywords: agglomeration, tableting, Acacia mangium, spring-back ratio. Classification numbers: 3.4.1; 2.3.1; 2.8.2 1. INTRODUCTION Biomass is planned to represent 17.2 % of the planned European heating and cooling mix and 6.5 % of electricity consumption in 2020 [1]. The Finnish Pöyry Industry consulting company has predicted growth in global pellet production capacity up to 46 million tonnes by 2020 [2]. Biomass is an important source of energy in Vietnam and it is one that the country is well endowed with. It is estimated that approximately 90 % of domestic energy consumption in rural areas is derived from biomass such as fuel wood, agricultural residues (e.g. rice straw and husks) and charcoal. .