Production of fuel briquettes from rice husk–lignite blends

Abstract

In this study, a lignite sample from Afşin‐Elbistan area of Turkey was briquetted using rice husk as additive. The lignite and the rice husk were first briquetted separately without blending under pressures of 280, 555, 830, and 1110 MPa. Lignite–rice husk blends were prepared to contain 2, 5, 10, and 20 wt % rice husk as additive. The blends were also briquetted using three different binder materials (molasses, starch, and black liquor). Shatter index, compressive strength, and water resistance of the formed briquettes were determined and compared. Addition of rice husk into Afşin‐Elbistan lignite caused to decrease the water resistance, but improved the mechanical strength of the briquettes. Using binder materials affected both compressive strength and shatter index negatively. But the water resistance of the briquettes increased with increasing binder material concentration. Adding rice husk changed the combustion characteristics of Afşin‐Elbistan lignite considerably and shifted its burning profile to lower temperatures. © 2016 American Institute of Chemical Engineers Environ Prog, 36: 742–748, 2017

Assessment of ecosystem services of rice farms in eastern India

“…Grain by-products like rice bran (contains 10−23% bran oil), which are in demand due to their anti-oxidant properties, are another possibility for value addition. Similarly, rice husks can add value, when converted to briquettes and pellets (Ozyuguran et al 2014). Using rice straw for mushroom production is another option; about 50-100 kg of mushrooms can be prepared using 1 t of dried rice straw (Zhang et al 2002).…”

Upgrading agro-pellets by torrefaction and co-pelletization process using food waste as a pellet binder

“…Both compressive strength and water resistance decreased with the increase of biomass proportion [28]. However, contrary conclusions have been drawn by Yaman et al [29] and Ozyuguran et al [30], where the mechanical properties of lignite briquettes were improved by adding biomass while excessive lignite is detrimental to briquetting by decreasing impact resistance and durability of pellets [9,26]. It can thus be concluded that blending with coal or coal waste can improve the calorific value of biomass pellets but may not contribute to the mechanical properties of briquettes.…”

Fuel Characteristics of Briquettes Manufactured by Natural Stacking Bamboo/Chinese Fir Mixtures

“… 22 The authors found that the mechanical properties of bamboo pellets were significantly improved when wood wastes were added to bamboo wastes during the manufacturing process. 23 Similar methods to improve the mechanical performances of briquettes were also confirmed, such as rice husk and banana residue mixture, 17 cashew shells and rice husk mixture, 24 rice husk–lignite mixture, 25 corn stover and peanut shell mixture, 26 and so forth. Chinese fir is a type of main plantation in southern China, where there are a lot of factories of bamboo products and charcoal.…”