Received date: 2004-05-29
Online published: 2010-10-01
The physicochemical properties of peat, a natural and cheap mineral, are introduced. The modifying methods of peat and its adsorption capacity for various heavy metals are reviewed. The influences of pH, modifying method, and concentrations of competing metals on peat adsorption are discussed. The adsorption mechanisms and rules of peat are summarized. The mechanisms of heavy metal ions binding to peat includes ion exchange, complexation, surface adsorption, and chemisorption. The sorption usually conforms to Langmuir isotherm or Freundlich isotherm. At the end, the application prospects of peat on the treatment of wastewater containing heavy metals are forecast, and some suggestions are proposed.
Key words: peat; heavy metals; wastewater
He Shaohua . Removal of heavy metals from wastewater by using peat adsorption[J]. Industrial Water Treatment, 2004 , 24(9) : 1 -4 . DOI: 10.11894/1005-829x.2004.24(9).1
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