HIGH QUALITY HYDROCHAR PRODUCTION FROM SEAWEED USING HYDROTHERMAL CARBONIZATION PROCESSES

• Main Author: Yonathan, Daniel
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/42264
• Institution: Institut Teknologi Bandung

Indonesia is an archipelagic country with a large sea area. Along with the vast area of the sea, seaweed production in Indonesia is very abundant. Seaweed is a very abundant source of biomass and can be used as raw material for products that have high added value. One of the products that can be produced from seaweed is activated carbon. Activated carbon is one material that can be used in various fields. The characteristics of activated carbon with high surface area and porosity, good conductivity makes activated carbon suitable for use in various fields. This research is focused on obtaining activated carbon with good quality and quantity. The process of making activated carbon consists of carbonization and activation processes. The carbonization process carried out is hydrothermal carbonization proceeded by the activation of CO2 using a furnace. This research is focused on the manufacture of activated carbon made from seaweed using a hydrothermal carbonization process using activators KOH, CaCl2, and ZnCl2. Variations made in this study are temperature, variations in activators, and the ratio of activators to raw materials. To eliminate ash content in activated carbon, demineralization will be carried out using HF. Activated carbon produced from seaweed Sargassum sp. has a surface area of 100- 1800 m2/g with an average pore size of 1-75 nm. The yield of hydrochar reached 67.9% in the hydrothermal carbonization process and the yield of activated carbon reached 27.2% at 250oC carbonization temperature with CaCl2 activator and impregnation ratio is 2 (two).