Ni (II), Cd (II) And Cr (IV) Contamination In Groundwater At Pulau Burung Decommissioned Landfill Site And Metal Biosorption Using Trichoderna Sp.
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Date
2011-07
Authors
Chew, Ann Won
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Historical accumulation of heavy metals in landfills has caused an increased leaching in
groundwater all around the world. The elevated concentration of heavy metals in
groundwater can cause environmental problems in most of the surrounding areas. The
main objectives of this study are to determine the concentration of metal ions (Ni, Cr
and Cd) in the groundwater of Pulau Burung landfill located within Byram Forest
Reserve at 5º 24'N, 100º 24'E in Penang, Malaysia, to study the biosorption of
Trichoderma sp. on nickel, cadmium and chromium in the contaminated groundwater,
identify the changes in the functional groups of Trichoderma sp. before and after
treatment and its applicability on adsorption isotherms models to determine its
biosorption capacity. In this research, monthly samplings of the groundwater within the
site were conducted from May to December 2008 and analyzed for the concentrations of
heavy metals using AAS. Studies on the fungal, Trichoderma sp. on its cell structure and
morphology were performed using Transmission Electron Microscope (TEM) and
Scanning Electron Microscope (SEM). Biosorption studies on Ni, Cd, and Cr by fungi
(Trichoderma sp.) using Freundlich and Langmuir adsorption isotherms together with
the treatment on raw contaminated groundwater from PBLS is used to assess its ability
to adsorb the heavy metals. Finally, biosorption using Trichoderma sp. is used to treat
the raw contaminated groundwater and a Fourier Transform Infra Red Test on the
fungus was carried out before and after the treatment of the groundwater to identify the
functional groups. Findings through the analysis of the groundwater showed presence of
pollutants containing heavy metals with higher accumulation during mid year from May
till August 2008 and started to plummet slowly until the end of the year.
Description
Keywords
Heavy metals in landfills has caused an increased leaching , in groundwater all around the world