Effect of Briquetting Process Variables on Hygroscopic Property of Water Hyacinth Briquettes

Abstract

The knowledge of water resistance capacity of briquettes is important in order to determine how sensitive the produced briquettes are to moisture change during storage. The relative changes in length and diameter of briquettes during immersion in water for 6 hours were investigated. This was conducted to determine hygroscopic property of produced briquettes under process variables levels of binder (10, 20, 30, 40, and 50%) by weight of residue, compaction pressure (3.0, 5.0, 7.0, and 9.0 MPa) and particle size (0.5, 1.6, and 4 mm of dried and ground water hyacinth). Data was statistically analysed using Analysis of Variance, the Duncan Multiple Range Test, and descriptive statistics. The relative change in length of briquettes with process variables ranged significantly from 7.21 ± 0.24% to 15.62 ± 3.07% (binder), 8.58 ± 0.55% to 13.97 ± 2.50% (compaction pressure), and 6.15 ± 0.21% to 17.78 ± 1.26% (particle size) ( < 0.05). Furthermore, the relative change in diameter of briquettes with binder, compaction pressure, and particle size varied significantly from 2.77 ± 0.13% to 3.02 ± 0.12%, 2.58 ± 0.12% to 3.31 ± 0.11%, and 2.64 ± 0.14% to 3.17 ± 0.06%, respectively ( < 0.05). This study suggests optimum process variables required to produce briquettes of high water resistance capacity for humid environments like the Niger Delta, Nigeria, as 50% (binder proportion), 9 MPa (compaction pressure), and 0.5 mm (particle size).

Investigation of some Properties of Bio-coal Briquettes Produced using Beniseed (Sesame seed) Stalks as Biomass

“…7. This is in agreement with work done by Davies and Davies [40] on the Effect of Briquetting Process Variables on Hygroscopic Property of Water Hyacinth Briquettes. In this work they produced briquettes at varying binder concentration, particle size and compaction pressure of 3, 5, 7, and 9 MPa.…”

Briquettes Production from Olive Mill Waste under Optimal Temperature and Pressure Conditions: Physico-Chemical and Mechanical Characterizations

“…As it was reported in the literature, the reduction of the particle sizing increases the material porosity and the number of contact points for inter-particle bonding in the compaction process [25]. Furthermore, the smaller the particle sizes of sample, the lower the relative change in the length of samples as it was mentioned [26]. Hence, the obtained powder of OP was mixed with the corn starch for different mixture compositions; 100%-0%, 90%-10%, 85%-15%, and 70%-30%, respectively.…”

Characterisation of briquettes from forest wastes: Optimisation approach

“…The relationship between water resistance and the mixing ratio with the quantity of the binder in the briquette was established to be significant as depicted in Table 5. Davies and Davies (2013b) reported the effects of a binder on the water resistance of a water hyacinth briquette to be significant. The water resistance of the briquette follows an increasing trend with both the quantity of the binder and the JSS-EcWS mixing ratio as shown in Figure 4.…”

“…Effects of variation in the mixing ratio and binder on the water resistance. The water resistance test is a measure of the degree of response of a material to moisture when it is in contact to water (Davies and Davies 2013b). The influence of the variation in the mixing proportion and quantity of the binder on the water resistance of the JSS-EcWS briquette was established; the water resistance of the briquette was found to have a mean value of 91.12% with a range of 72.04 to 97.45% at the corresponding mixing ratios of 25 : 75 and 75 : 25, while the quan- https://doi.org/10.17221/6/2021-RAE of 99.22 to 99.88% at the corresponding mixing ratios of 25 : 75 and 75 : 25, while the quantity of the binder in each mixing ratio was 60 g respectively.…”