Assessment of the hierarchical involvement of chemical characteristics of soil layer particles during bacterial retention in Central Africa. (1st January 2011)

• Record Type: Journal Article
• Authors: Nola, Moïse; Ewoti, Olive V. Noah; Nougang, Mireille E.; Krier, François; Chihib, Nour-Eddine; Hornez, Jean-Pierre; Njiné, Thomas
• Is Part Of: International journal of environment and pollution. Volume 46:Number 3/4(2011)
• Page Start: 178
• Page End: 198
• Publication Date: 2011-01-01
• Subjects: Salmonella sp -- fecal indicator bacteria -- soil particles -- sorption -- predominant factors; Environmental policy -- Periodicals; Environmental engineering -- Periodicals; Environmental sciences -- Periodicals; Pollution -- Periodicals; 363.73
• Languages: English
• ISSNs: 0957-4352

Abstract

The main purpose of this investigation was to rank, in hierarchical order, some soil chemical factors that impact the sorption parameters of fecal indicator bacteria and Salmonella sp, during their transfer from soil surface to the groundwater table. Sorption coefficients ( Kf ) and linearity exponents (Ϫ ) were obtained using the Freundlich isotherm. When Salmonella sp was present alone, the values of Kf varied from 2.70 log units mg −1 to 7.84 log units mg −1 of soil, andϪ varied from 0.04 to 2.70. When the two fecal indicator bacteria were present, Kf varied from 0.48 log units mg −1 to 8.53 log units mg −1 of soil, andϪ varied from 0.06 to 1.19. When fecal indicator bacteria and Salmonella sp were mixed, Kf varied from 1.73 log units mg −1 to 7.70 log units mg −1 of soil, andϪ varied from 0.09 to 0.88. The predominant factors controlling each sorption parameter varied with respect to soil layer and the bacterial species involved.