CD Disertasi
Pemanfaatan Limbah Lidi Kelapa Sawit Sebagai Bahan Elektroda Superkapasitor Yang Berkelanjutan
Background and Research Objectives: Riau has its own potential commodities in agriculture as one of the biggest home provinces for oil palm plantations run by locals. The existence of the estates immensely reaches 1.83 million hectares. Oil palm trees have massive growth regeneration, especially in their fronds so that the quantity of fronds must be controlled by cutting them down in order to maximize the yield of fruits. The waste of fronds is usually piled up and left alone to be used later as compost after going through a natural decomposition process. Other wastes such as palm sticks which are organic components containing lignin, hemicellulose, and cellulose can be utilized as basic ingredient for creating activated carbon and supercapacitor electrodes. This study aims to analyze the substance properties of oil palm sticks as a raw material for creating supercapacitors and the impact of waste sticks on ecosystems as well as socioeconomic status of local communities.
Research method: This research was conducted using a combination approach between quantitative and qualitative methods (mixing methods research). Samples of oil palm sticks were examined using a quantitative approach by measuring, analyzing and presenting data from various treatments. For community samples related to the utilization of palm stick waste, a qualitative approach was carried out through observation and interviews using a questionnaire then analyzed using Rapid Appraisal for Fisheries (RAPFISH) which was later modified into RAP-Palm Stick. Rapid Appraisal for Palm Stick (RAP- Palm Stick).
Results and Discussion: The data obtained was then tested using a physical and chemical approach whereby the chemical activation of ZnCl2 formed a specific surface area reaching 631 m2/g at a concentration of 0.5M while the chemical activation treatment of KOH at a concentration of 0.5M resulted in an increase in a more specific surface area of 934 m2/g. The highest capacitive properties resulting from a sample with a chemical activation concentration of 0.5M ZnCl2 was 240 F/g, the highest energy density was 21.19 Wh/kg, and the optimum power density was 131.86 W/kg. Whereas using KOH concentration of 0.5 M the highest specific capacitance was 233 F/g, the highest energy density was 19.03 Wh/kg, and the highest power density was 355.86 W/kg. Furthermore, the data obtained using the RAP- Palm Stick shows an ecosystem sustainability index of 83.91 which states that it is quite sustainable, the social dimension is classified in less sustainable category with an index of 29.9, and the economic dimension is classified in less
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sustainable category with a value of 29.99. In fact, based on data for 2021, out of 14.6 million hectares of oil palm plantations in Indonesia, Riau has around 2.86 million hectares or around 19.5% of the total available land. This should be a potential for Riau residents to get more jobs from the pruning process of around 47,500 people.
Conclusion: The results of processing palm sticks which are carried out by physical and chemical activation have been successfully converted into activated carbon which can be used as a base material for supercapacitor electrodes and can be developed in the future. Meanwhile, the sustainability index shows that ecosystem-wise, the processing of palm frond waste is quite sustainable while the socioeconomic dimension does not show a positive trend. In this case, it is necessary to improve the dimensions of the levers such as the government's role in controlling the market such as increasing the selling price of sticks so that locals are more prosperous.
Bibliography: 134 pieces (from 1969 to 2022)
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