PREPARATION AND STUDY OF ACID-BASE AND ION EXCHANGE PROPERTIES OF RICE HUSK BIOCHAR

Authors

DOI:

https://doi.org/10.15421/jchemtech.v33i3.330378

Keywords:

rice husk, biochar, pyrolysis, microwave irradiation, thermochemical conversion, acid-base properties, ion exchange properties

Abstract

Odesa region is a leader in Ukraine in rice production, which makes the issue of utilizing rice by-products particularly relevant. Rice husks are considered as a promising raw material for the production of biochar. The aim of this study is to synthesise biochar, which is used as a carrier for immobilizing the isolated soil microbial complex for the treatment of oil-containing wastewater, and to study its acid-base and ion-exchange characteristics. The analysis of potentiometric titration curves indicates the contribution of different ionized groups to the general properties of biochar, which allows it to be classified as a polyfunctional ion exchanger. It is proved that due to the properties of ampholytes, biochar can be used as a matrix for immobilization of microbial complexes, capable of acting as a buffer by regulating the pH level.

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Published

2025-10-19

Issue

Vol. 33 No. 3 (2025): Journal of Chemistry and Technologies

Section

Chemical Technology

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