Journal article

Effect of several organic acids on phosphate adsorption by variable charge soils of central China

HQ Hu, JZ He, XY Li, F Liu

Environment International | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2001


The effect of several organic acids on phosphate adsorption by acidic soils in subtropical zone of central China was studied. Results showed: (1) citrate and oxalate remarkably reduced the amount of phosphate adsorption, but tartrate, benzoate and acetate had only a very slight influence on phosphate adsorption; (2) the ability of citrate in reducing phosphate adsorption was greater than that of oxalate, moreover, the reduction percentage was dependent on the concentration of organic ligands in the solution; (3) the effect of organic acids on phosphate adsorption was related to the pH value of organic acid solution. The minimum reduction in adsorption of phosphate was present at a specific p..

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University of Melbourne Researchers