Parallel-serial adsorption of phosphate ions by natural sorbents

Authors

  • Оксана Вікторівна Сидорчук Lviv Polytechnic National University St. Yura Square 3/4, educational building № 8, room 121, Lviv, Ukraine, 79000, Ukraine
  • Оксана Василівна Мацуська National university of veterinary medicine that biogeotechnologies of the name of S.Z. Gzhickogo St. Pekarskaya 50, Lvov, Ukraine, 79010, https://orcid.org/0000-0003-0915-8878
  • Віра Василівна Сабадаш Lviv Polytechnic National University St. Yura Square 3/4, educational building № 8, room 121, Lviv, Ukraine, 79000, Ukraine https://orcid.org/0000-0002-6091-4053
  • Ярослав Михайлович Гумницький Lviv Polytechnic National University St. Yura Square 3/4, educational building № 8, room 122a, Lviv, Ukraine, 79000, Ukraine https://orcid.org/0000-0003-0464-9782

DOI:

https://doi.org/10.15587/1729-4061.2014.30874

Keywords:

natural zeolite, modified zeolite, phosphate ions, heavy metals, adsorption, wastewater

Abstract

The process of adsorption of phosphorus compounds on natural sorbent - zeolite, which shows adsorption and ion exchange properties is considered. Phosphates belong to anthropogenic environmental pollutants. They are present in the wastewater of industrial and utility enterprises. Static activity of phosphates in zeolite in their pollution limits in wastewater is investigated. It is shown that they are in low concentrations. This process is described by Henry linear adsorption equation.

The presence of other components in the wastewater, especially ammonium compounds, complicates the adsorption process. The absorption of ammonium ions occurs mainly through ion exchange, replacing sodium, potassium and ammonium cations in the zeolite. The absorption of phosphorus compounds proceeds due to adsorption and formation of compounds with calcium and magnesium ions in zeolite pores. Parallel adsorption of two components slightly reduces static activity in relation to phosphorus compounds, but the total adsorption of the two components is higher.

The second investigated mechanism of adsorption of components from aqueous solutions by zeolite was serial adsorption. Primarily, adsorption of copper ions, for example, when treating electroplating wastewater was conducted. This process allows to modify sorbent and change its adsorption properties. The next stage was adsorption of phosphate compounds by the modified zeolite, on which these compounds form persistent connections with copper, calcium and magnesium ions, and adsorption capacity of the modified zeolite significantly increases.

The studies of parallel and serial sorption indicate the feasibility of these purification methods.

Author Biographies

Оксана Вікторівна Сидорчук, Lviv Polytechnic National University St. Yura Square 3/4, educational building № 8, room 121, Lviv, Ukraine, 79000

Postgraduate student

Department of  Ecology and Balanced Nature Use

Оксана Василівна Мацуська, National university of veterinary medicine that biogeotechnologies of the name of S.Z. Gzhickogo St. Pekarskaya 50, Lvov, Ukraine, 79010

Candidate of Аgricultural Sciences, аssistant

Department of Ecology and Biology 

Віра Василівна Сабадаш, Lviv Polytechnic National University St. Yura Square 3/4, educational building № 8, room 121, Lviv, Ukraine, 79000

Candidate of Technical Sciences, Assistant Professor

Department of  Ecology and Balanced Nature Use

Ярослав Михайлович Гумницький, Lviv Polytechnic National University St. Yura Square 3/4, educational building № 8, room 122a, Lviv, Ukraine, 79000

Gumnitsky Jaroslav

Doctor of Technical Sciences, Professor

Department of Applied Ecology and Balanced Nature Use

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Published

2014-12-11

How to Cite

Сидорчук, О. В., Мацуська, О. В., Сабадаш, В. В., & Гумницький, Я. М. (2014). Parallel-serial adsorption of phosphate ions by natural sorbents. Eastern-European Journal of Enterprise Technologies, 6(6(72), 56–60. https://doi.org/10.15587/1729-4061.2014.30874

Issue

Section

Technology organic and inorganic substances