Hydrothermal Carbonization of Seaweed For Advanced Biochar Production

Tirto Prakoso,Guoqing Guan,Rima Nurastuti,Reza Hendriansyah,Gede Suantika,Jenny Rizkiana,A.C Kumoro,P.T.S Nam,A.W Lothongkum,W.R.W Daud,M.T Phong,L Yung,M.A Hussain,S.A Roces,Hadiyanto Hadiyanto,X Rong

doi:10.1051/matecconf/201815605012

Abstract

Seaweed such as Eucheuma Cottonii is a potential source of biomaterialIts high moisture content makes it suitable for hydrothermal conversion process since it doesn’t need to utilize dry feedstock. The aim of this study is to convert the biomass of red seaweed Eucheuma Cottonii into alternative fuels and high value biomaterials using hydrothermal process. The hydrothermal process seaweed Eucheuma Cottonii produce two types of products, liquid product and char (solid). This research focus on the char product. The char from hydrothermal process was then activated using the tubular furnace. The yield for activated char is 7.5 % and results of SEM analysis of activated char showed the formation of allotropes carbon include carbon micro spheres, carbon micro fibres and graphene. These structures have encountered application in a wide range of technological fields, such as adsorption, catalysis, hydrogen storage or electronics.

Highlights

United Nation Convention on the Law of the Sea (UNCLOS) in 1982 reported that Indonesia marine teritority ocupied 5.8 million km2 and it contains 27.2% of all species flora and fauna from all over the world
Abundant aviablity of seaweed in Indonesia should be optimized by turning this resources into other high value product
Hydrothermal process take place in water at high temperature ranging at 250347°C and pressure ranging at 4-22 MPA

Summary

Introduction

United Nation Convention on the Law of the Sea (UNCLOS) in 1982 reported that Indonesia marine teritority ocupied 5.8 million km and it contains 27.2% of all species flora and fauna from all over the world. Seaweed or known as macroalgae is one of the most abundant biological resources in Indonesian, which is about 8.6% from the total biota in the sea [1]. Abundant aviablity of seaweed in Indonesia should be optimized by turning this resources into other high value product. Some of product that can be obtained from seaweed are biomaterial and biofuel. Seaweed conversion into biomaterial and biofuel by hydrothermal process has drawn much attention. The most advantages of hydrothermal process is it can use feedstock with high moisture content without the need of pre-dying [2]. Hydrothermal process is suitable to be used for seaweed processing since it has high moisture content

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