Environmental Effects of Processing Marine Clay in Olotu, Ondo State, Nigeria

Abstract

In this work, analysis of the released gas from calcined marine clay and lime shell was investigated. Study of the emitted gas/air from the calcined clay and shell showed that average concentration of carbon dioxide (CO₂: 20.09PPM and 8.12PPM) are below the maximum standard natural concentration 600PPM of carbon dioxide in fresh air and the recommended World Health Organization Threshold Limit Value (TLV) of 500PPM. Average carbon monoxide (CO) concentration (0.004PPM, 0.010PPM) and sulfur dioxide (SO₂) concentration (0.002PPM are below the Nigeria Ambient Air Quality Standards (NAAQS) and World Health Organization (WHO) maximum limit of 10PPM-20PPM (for carbon monoxide) and 0.01PPM- 0.5PPM (for sulfur dioxide) for an 8-hourly time. It was established that the average concentration of C0, C0₂, and S0₂ is so low and so pose no threat to the environment based on the review of the existing regulation, standards and codes (WHO and NAAQSO).

Keywords: Ambient, Testo 350XL- Analyzer, PPM- Part Per Million, calcining