Analysis of industrial wastewater and its effects on agricultural crops grown from it

Usman, Abdulaziz Ibrahim (2015) Analysis of industrial wastewater and its effects on agricultural crops grown from it. MSc dissertation, University of Portsmouth.

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    Industrial wastewater is increasingly being considered as a solution to counter the problems being faced due to demand and supply of clean water. The aim of the study was to test if the use of industrial wastewater for irrigation could affect the quality of the crops. Vegetable samples were grown in greenhouse conditions using polluted water made in the laboratory with the levels of heavy metals found in Industrial wastewater. The concentration of heavy metals that included Cu, Zn, As, Pb, Cr, Hg, Ni and Cd were determined using the Inductively Coupled Plasma Mass spectrometry (ICP Ms). Initially, the plants grown with the industrial wastewater showed accelerated growth but stalled due to the accumulation of metallic ions. The results obtained during the analysis revealed that Zn had the highest concentration in the leaves with values ranging from 171.91mg/kg to 114.82mg/kg while Hg had the lowest values which ranged from 26.59mg/kg to 2.67mg/kg. However, the soil had higher accumulation of the metals than the analysed leave samples. Eight heavy metals were analysed and of all the parameters analysed, only Cd with values that ranged between 17.88mg/kg to 24.85mg/kg showed levels that were significantly higher than the allowed limits set by the WHO and FAO. This values might be connected to the high level of the metal in the stock solutions used for the experiment. Thus, it is safe to say that the very high values of the metal in the crops could put consumers at health risk. Although, further research can be carried out with other forms of crops and the length of time taken for the experiment to be extended.

    Item Type: Dissertation
    Additional Information: Page numbers on the contents page are incorrect due to the combining of two documents.
    Departments/Research Groups: Faculty of Technology > School of Civil Engineering and Surveying
    Depositing User: Jane Polwin
    Date Deposited: 10 Nov 2015 15:14
    Last Modified: 10 Nov 2015 15:14

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