Properties of Biochar Prepared from Acacia Wood and Coconut Shell for Soil Amendment

Abstract

Abstract. The biochar produced from the agricultural wastes was aimed to amend the extreme degraded soil. The properties of biochar prepared from Acacia wood and coconut shell were investigated by different pyrolysis conditions in order to identify the suitable initial biomass of biochar applied for sandy soil amendment. The slow pyrolysis was applied for preparing biochar under different conditions. The temperature was varied from 300, 400 and 500 o C meanwhile the pyrolysis times were varied to 1, 2 and 3 hours. The parameters indicating biochar property are SA, APD, elemental contents of C, H, O and N, pH, CEC, and WHC. The properties of Acacia biochar and coconut shell biochar were compared using paired T-test at 95% confident interval to analyze the significant difference. The results indicated that the types of the initial biomass and the pyrolysis conditions have an impact on the properties of biochar for both physical and chemical. The suitable temperature was 500 °C for 2 hours. The different types of biomass are significantly effect on the SA, C and O contents, pH, CEC and WHC of the prepared biochar (P<0.05). Properties of Acacia wood biochar indicate that it is more suitable than coconut shell biochar to be applied as sandy soil amendment due to its higher SA, higher CEC, and neutral pH. Meanwhile, coconut shell biochar also can be applied for the typical soil appropriate and increase crop yield.

Banana pseudo-stem biochar derived from slow and fast pyrolysis process

“…Meanwhile, the percentage of hydrogen in BPS biochars are very low due to the loss of hydrogen component during the pyrolysis process of BPS feedstock. The feedstock loses surface functional –OH groups due to dehydration at lower pyrolysis temperatures and loses H atoms due to the structural core degradation [ 83 ]. The result also revealed that BPS biochar contained 28.48% and 19.96% of nitrogen for biochar derived from fast and slow pyrolysis, respectively.…”

Comparative efficiency of silica gel, biochar, and plant growth promoting bacteria on Cr and Pb availability to Solanum melongena L. in contaminated soil irrigated with wastewater

“…It was also examined that the concentration of total phenolics was increased than that of proteins which indicated more regulation of total Cr and Pb stress because phenolics are involved in ROS scavenging ( Figure 4 ). The improvement in biochemical compounds of plants might be due to the increase in the water-holding capacity of soil with the applications of chitosan and rice husk biochar (Pandey and De, 2017 ; Pituya et al, 2017 ; Suliman et al, 2017 ). Therefore, the production of starch, amino acids, proteins, phenolics, carotenoids, and chlorophyll content is enhanced by the improvement of the plant's metabolic activities due to the improved flow of water through the xylem toward the leaves (Younis et al, 2015 ; Hafeez et al, 2017 ).…”

Application of biochar and sulfur-modified biochar in a saline-sodic and calcareous soil: Effects on soil water content, soil biochemical properties and millet (Panicum miliaceum) yield

“…4). The biochar used in this study (B and BS) has a high water-holding capacity (400% and 250%) compared to other biochar compounds, for example, the water-holding capacity of coconut shell biochar is 60% (Pituya et al, 2017;Paul and Harikumar, 2022). This WHC of sun ower biochar is due to the superabsorbent materials of the sun ower stalk, (pith brous and hemicellulose).…”