Original scientific paper

APPLICATION OF NATURAL ZEOLITES IN ENVIRONMENT PROTECTION

Branka Vojnović orcid.org/0000-0003-1469-1781 ; Tekstilno-tehnološki fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Karmen Margeta ; Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, Zagreb, Hrvatska
Mario Šiljeg ; Geotehnički fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Štefica Cerjan Stefanović ; Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, Zagreb, Hrvatska
Ljerka Bokić ; Tekstilno-tehnološki fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska

Abstract

The paper summarizes the findings and our own experience regarding exploitation of the properties of natural zeolite in the final processing of water to remove traces of metal ions like chromium, arsenic and silver. Arsenic present in natural waters is of genetic origin and is due to the process of decomposition of minerals in groundwater. Other examined metal ions are mainly of anthropogenic origin and come from the chemical, textile and metallurgical industries. The results showed that the efficiency of arsenic removal using iron modified zeolites for the lower concentration range is up to 100%, for chromium ions in concentration range from 0.5 to 20 mg/L is 40 to 60% depending on the modification of zeolites, and for silver ions in concentration range from 5-120 mg/L from 55 to 70% depending on the deposit of the natural zeolite.

Keywords

natural zeolites; clinoptilolite; metal ions; ion exchange; removal efficiency

Hrčak ID:

108681

URI

https://hrcak.srce.hr/108681

Publication date:

2.10.2013.

Article data in other languages: croatian

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