Comparative characteristics of silicon-containing products from rice production waste and commercial enterosorbents

Authors

  • Anna V. Kovekhova Institute of Chemistry, FEB RAS, Vladivostok, Russia; Far Eastern Federal University, Vladivostok, Russia
  • Olga D. Arefieva Institute of Chemistry, FEB RAS, Vladivostok, Russia; Far Eastern Federal University, Vladivostok, Russia
  • Aleksandr E. Panasenko Institute of Chemistry, FEB RAS, Vladivostok, Russia
  • Lyudmila A. Zemnukhova Institute of Chemistry, FEB RAS, Vladivostok, Russia

Keywords:

rice straw, rice husk, horsetails, amorphous silicon dioxide, sodium aluminosilicate, enterosorbents, sorption

Abstract

The paper presents a comparative characterization of samples of amorphous silica and sodium aluminosilicate obtained from rice production waste (husks and straw) and the above-ground part of horsetails (field and wintering), with a silicon dioxide reagent and commercial samples of silicon-containing enterosorbents according to a number of physico-chemical parameters. The phase state of the samples (amorphous and amorphous-crystalline) was established, their IR absorption spectra in the region of 400–4000 cm–1 were described, the values of bulk density (from 28 to 631 kg/m3), the pH of the aqueous extract (from 5.6 to 9.6) and the content of water-soluble substances (from 7 to 35 %) were found. The adsorption activity of all the studied samples was determined by methylene blue in a neutral medium (3–264 mg/g), and for enterosorbents and sodium aluminosilicate from rice straw – in the stomach (pH 2) and duodenum (pH 7.5). It is shown that the adsorption activity of silicon-containing sorbents from plant raw materials is comparable to commercial enterosorbents.

Author Biographies

Anna V. Kovekhova, Institute of Chemistry, FEB RAS, Vladivostok, Russia; Far Eastern Federal University, Vladivostok, Russia

Candidate of Sciences in Chemistry, Research Scientist, Associate Professor

http://orcid.org/0000-0001-7179-2736

Olga D. Arefieva, Institute of Chemistry, FEB RAS, Vladivostok, Russia; Far Eastern Federal University, Vladivostok, Russia

Doctor of Sciences in Chemistry, Associate Professor, Research Scientist, Professor

http://orcid.org/0000-0001-8001-4370

Aleksandr E. Panasenko, Institute of Chemistry, FEB RAS, Vladivostok, Russia

Candidate of Sciences in Chemistry, Head of the Laboratory  

http://orcid.org/0000-0001-7875-6068

Lyudmila A. Zemnukhova, Institute of Chemistry, FEB RAS, Vladivostok, Russia

Doctor of Sciences in Chemistry, Professor, Chief Researcher

http://orcid.org/0009-0003-5301-9119

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Published

2023-12-21

How to Cite

Kovekhova А. В., Arefieva О. Д., Panasenko А. Е., & Zemnukhova Л. А. (2023). Comparative characteristics of silicon-containing products from rice production waste and commercial enterosorbents. Vestnik of the Far East Branch of the Russian Academy of Sciences, (6), 135–145. Retrieved from http://vestnikdvo.ru/index.php/vestnikdvo/article/view/1151

Issue

No. 6 (2023)

Section

Environmental chemistry and chemical technology