PHOSPHORUS ISOTHERMAL ADSORPTION CHARACTERISTICS OF MULCH OF BIORETENTION

Abstract

This study aims to identify mulch of bioretention which has high phosphorus orption capacity. The phosphorus adsorption characteristics of five types of ulch of bioretention are studied by three isothermal adsorption experiments. esults show that the Langmuir eqution is suitable for describing absorption characteristics of five types of mulch. The positive values of Gibbs free energy for phosphorus indicate that the phosphorus biosorption by five mulches is a non-spontaneous process, and the values of mean sorption free energy of mulch are less than 8 kJ/mol, which proves that the adsorption process can be dominated by physical forces. The vermiculite is the better mulch of bioretention based on high phosphorus removal capacity.

Keywords

Dates

  • Submission Date2012-05-27
  • Revision Date2012-08-28
  • Acceptance Date2012-09-01

DOI Reference

10.2298/TSCI1205358M

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Volume 16, Issue 5, Pages1358 -1361