Sorption of the Simplest Carboxylic Acids on Clay-Like Mineral Glauconite: Reduction of Integral Toxicity of Aqueous Solutions

Authors

  • L.E. Tsygankova Derzhavin State University, ul. Internatsyonalnaya, 33, Tambov, 392000, Russian Federation

Keywords:

Organic acids, biodegradability, oxygen consumption, sorption, glauconite.

Abstract

The integral toxicity of solutions of a number of carboxylic acids was estimated by measuring their chemical oxygen consumption (COC) and the biochemical oxygen demand for the biodegradation of substances due to microorganisms (BOD5). The analytical dependences of COC and BOD5 as well as of their ratio for these compounds on concentration were determined. The values of COC and BOD5 for a number of acid solution mixtures were measured. The coefficient that indicates biodegradability of substances has been calculated. The chemical consumption of oxygen by solutions of organic acids is shown to increase with the transition from lower to higher homologues and with increase in the concentration of the solution.

The kinetics and degree of removal of organic acids out of solutions due to sorption on the clay-like mineral, glauconite, have been studied. Glauconite that is the natural sorbent is characterized by a high adsorbing power in solutions of organic acids under both stationary and non-stationary conditions. However, adsorption becomes complicated as complexity of the organic acid molecule structure grows. To achieve more comprehensive removal of acids out of solutions, one reduces flow rate and increases thickness of the sorbent layer.

References

Hygienic. Hygienic requirements for quality assurance atmospheric air in populated areas: SanPin 2.1. 6.1032 – 01. Moscow: IITS of the Ministry of Health of Russia 2001.

Maximum. Maximum permissible concentration (MPC) of chemical substances in soil: GN 2.1.7. 2041 - 06. Moscow: IITS of the Ministry of Health of Russia 2006.

Lazarev NV, Levina EN. Harmful substances in industry. Moscow: Chemistry 1976.

Vigdorovich VI, Shel N, Zarapina IV. Theoretical basis, technology and technology of neutralization, processing and recycling of waste. Moscow: CARTEK 2008.

Methodological RD 52.24.421-95. Methodological guidelines for the determination of COC in waters. Rostov n/D 1995.

Methodologica RD 52.24.420-95. Methodological guidelines for the determination of BOD in waters by bottle method. Rostov n/D 1995.

Vigdorovich VI, Tsygankova LE, Esina MN, Uryadnikov AA, Shel NV. Calculation of the dynamic sorbent capacity in the presence of two sorbates. J Water Process Eng 2017; 20: 180-6. https://doi.org/10.1016/j.jwpe.2017.11.002

Vigdorovich VI, Tsygankova LE, Akulov AI. Phenol extraction from aqueous solutions by glauconite. Sorbtsyonnye i chromatographicheskie processy (Rus) 2010; 10: 500-5.

Zhu L, Zhu R. Simultaneous sorption of organic compounds and phosphate to inorganic–organic bentonites from water. Sep Purif Technol 2007; 54: 71-6. https://doi.org/10.1016/j.seppur.2006.08.009

Anirudhan TS, Ramachandran M. Surfactant-modified bentonite as adsorbent for the removal of humic acid from waste waters. Appl Clay Sci 2007; 35: 276-81. https://doi.org/10.1016/j.clay.2006.09.009

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Published

2018-12-21

How to Cite

Tsygankova, L. . (2018). Sorption of the Simplest Carboxylic Acids on Clay-Like Mineral Glauconite: Reduction of Integral Toxicity of Aqueous Solutions. Journal of Applied Solution Chemistry and Modeling, 7, 55–61. Retrieved from https://lifescienceglobal.com/pms/index.php/JASCM/article/view/7759

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Section

General Articles