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The Possibility of Application of HEDP in Pulp Bleaching |
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DOI:10.11980/j.issn.0254-508X.2013.06.002 |
Key Words:HEDP Fenton reaction chelating agent pulp bleaching |
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Abstract:1-hydroxy ethylidene-1,1-diphosophonic acid(HEDP)contains chelate atom P by infrowed spectroscopic analysis. Firstly, Fenton reaction experiment was carried out in order to prove HEDP could used in Q stage. And then HEDP was used in OPQP bleaching. The results showed that HEDPs chelating metal ions ability is between EDTA and DPTA. The properties of the bleached pulp were similar to that of the pulp bleached using EDTA and DTPA in chelating stage. HEDP is more competitive due to its low price. |
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