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Abstract⎯ Production of Crude Palm Oil (CPO) generates waste, one of which is Empty Fruit Bunch (EFB).EFB has a high potential for further utilization due to its carbon and nitrogen content.The abundant carbon content can be utilized and further processed into a value-added product such as biochar.This study investigates the influence of solid waste mixtures from various parts of the oil palm and the effect of temperature on biochar production.A simple furnace pyrolysis method was chosen for biochar production.The biochar produced is subsequently applied to remediate and reduce heavy metal pollution in soil, especially for zinc (Zn) and cupprum (Cu).The efficacy of biochar application on the contaminated soil is indicated by the percentage removal of heavy metals and the growth of the Pakcoy (Brassica rapa).The soil's heavy metals content is conditioned to mimic soil contaminated with micronutrient fertilizer.Solid wastes, such as EFB, trunks, and oil palm shells, are dried until their moisture is ca.10%-weight.Subsequently, they were crushed and uniformly sized into 50-100 mm.Considering solid waste's proximate and ultimate analysis results, solid waste with the highest carbon content was further processed for biochar production using the furnace pyrolysis method (200, 300, and 400°C for 3 hours).With the best performance, the pristine biochar was subsequently added to contaminated soil media planted with Pakcoy (Brassica rapa) in an 80:20-percentage weight ratio.The effectiveness of biochar in the remediation of heavy metal pollution in soil was observed by monitoring the growth of the Pakcoy.The best biochar was produced at furnace pyrolisis (200°C, 3 hours), yielding 36% of biochar and a carbon content of 49.86%.The produced biochar is in category 2 of biochar quality (carbon content of 30% ≤ C 50%) than sample Z (high content of Zn), which only removed 2%-4% in heavy metal content.Moreover, the Pakcoy grows the best at sample Zn.However, adequate and balanced nutrition can stimulate plant growth.
Arvamusa et al. (Fri,) studied this question.