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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
The Inhibition of aluminium corrosion in hydrochloric acid solution by exudate gum from Raphia hookeri
Desalination, Volume 247, No. 1-3, Year 2009
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Description
The corrosion inhibition of aluminium in HCl solution in the presence of exudate gum from Raphia hookeri at temperature range of 30-60°C was studied using weight loss and thermometric techniques. The exudate gum acts as an inhibitor in the acid environment. The inhibition efficiency increases with increase in inhibitor concentration but decreases with an increase in temperature. The inhibitive effect of the Raphia hookeri exudate could be attributed to the presence of some phytochemical constituents in the exudate which is adsorbed on the surface of the aluminium metal. The exudate gum was found to obey Temkin adsorption isotherm and Kinetic-Thermodynamic Model of El-Awady et al. at all the concentrations and temperatures studied. Phenomenon of physical adsorption is proposed from the activation parameters obtained. Thermodynamic parameters reveal that the adsorption process is spontaneous. © 2009.
Authors & Co-Authors
Umoren, Saviour Alphonsus
Nigeria, Uyo
University of Uyo
Obot, Ime Bassey
Nigeria, Uyo
University of Uyo
Ebenso, Eno E.
Nigeria, Ibadan
University of Ibadan
South Africa, Lesotho
National University of Lesotho
South Africa, Potchefstroom
North-west University
Obi-Egbedi, Nelson Okpako
Nigeria, Ibadan
University of Ibadan
Statistics
Citations: 155
Authors: 4
Affiliations: 4
Identifiers
Doi:
10.1016/j.desal.2008.09.005
ISSN:
00119164