HAZARDS ASSOCIATED WITH EMMISSION FROM CEMENT KILN DUST; A CASE STUDY OF OBAJANA CEMENT FACTORY

Authors

  • S. Kabiru
  • M. Fatima
  • Y. Rufai

Abstract

Abstract During the last decades, the emission of dust from cement factories has increased alarmingly due to expansion of more cement factories to meet the requirement of cement materials for construction of building. Cement factory caused environmental pollution problems; the pollutants from the cement factory have adverse effects on the immediate environment. Exposure to cement or concrete dust can cause nose and throat irritation. Long term exposure to concrete dust containing crystalline silica can lead to a lung disease called silicosis. A total of twelve Dust samples were collected from the four cardinal directions (north, south, west and east) around the cement factory by placing a wide surface plastic bow at each collection point on a high place and the sample was collected at every five day for a period of thirty days.1.00g of the dust sample was digested in acid mixture prepared from 15mL HNO3 and 5mL HCl (3:1). Metal concentration was determined using Atomic absorption spectrophotometer (AAS) perkin Elmer model 460 and flame photometer for the sodium and potassium , the oxides of calcium, aluminum, iron, potassium, magnesium, sulfur and silica were analyzed using Thermo scientific x-ray fluorescence analysis software (OXSAS 1.1), ARL 9900 intelli-power series. X-ray fluorescence (XRF) analysis of dusts sample shows that the mean dust values for CaO, SiO2, Al2O3 and Fe2O3.MgO, K2O, Na2O and SO3 are 22.59%, 49.30%, 9.13%, 7.98%, 1.45%, 1.45%, 1.42% and 0.17% respectively and the result of Atomic Absorption Spectrophotometry analysis follows the same pattern as that of X- ray fluorescence analysis except for iron oxide which is higher at the west direction. This study has revealed that kiln dust released from Obajana cement factory posed some health challenge not only to the workers but also to the host community Key words: Cement-kiln dust, Obajana, factory

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Published

2020-05-23