Synthesis of Engineering Carbon From Agricultural Waste Biomass By Hydrothermal Carbonization Process

Hydrothermal carbonization (htc) among other pretreatment process to convert feedstock into coal-liked material is known as a suitable process for synthesis of novel carbon-based material from agricultural waste biomass that received increased attention recently# the black solid product known as main product of htc is called hydrochar and has shown promising applications in many fields such as carbon fixation, water purification, fuel cell catalysis, energy storage, co2 sequestration, bioimaging, drug delivery, and gas sensors# depending on the desired quantities, properties and application of products selection of the proper treatment method is important and limited# in this investigation htc is applied to saffron flower waste as an agricultural waste and to understanding the complex process and finding correlation between process parameters and product properties the effect of reaction temperature and residence time were investigated at the range of 180-260°c and 1-4 h respectively# analysis applied for the raw feedstock and its hydrochar were including hydrochar yield, bet surface area, elemental composition (c, h, n, s and o) and thermogravimetric analysis (tga)#the results of this characterization showed that hydrothermal carbonization in high temperature media resulted in decreasing in hydrochar yield, increasing in surface area (bet) and carbon content# residence time has the effects like temperature#