EFFECT OF PREPARATION CONDITIONS OF BIOCHAR FROM RICE STRAW BY HYDROTHERMAL CARBONIZATION

Ngoc Bich Nguyen

Abstract


Biochar was prepared from rice straw using hydrothermal carbonization method which consisted of zinc chloride treatment. The effects of hydrothermal temperature, time and biomass/water rate on methylene blue removal from aqueous solution were investigated. Besides, response surface modeling (RSM) and the central composite design – face centered (CCF) method will be used in designing experiments. It was found that the optimal conditions for high efficiency of biochar were such that: temperature of 194.07 °C, 9.00 hours and biomass/water ratio of 10 wt%, which resulted methylene blue removal of 92.56 %.

 


Keywords


hydrothermal carbonization, biochar, rice straw, methylene blue.

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DOI: https://doi.org/10.15625/2525-2518/55/1B/12113 Display counter: Abstract : 140 views. PDF : 94 views.

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Published by Vietnam Academy of Science and Technology