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| Effect of Metal Ion and Non-silicon Stabilizer on the Stability of Hydrogen Peroxide in Chemi-mechanical Pulp Bleaching Process |
| Received:March 19, 2024 |
| DOI：10.11980/j.issn.0254-508X.2024.09.013 |
| Key Words:metal ions non-silicon stabilizer chelate value residual H2O2 content bleaching effect |
| Author Name | Affiliation | Postcode | | LIU Xiaoxiao | Zhejiang Transfar Whyyon Chemical Co., Ltd., Hangzhou, Zhejiang Province, 311231 | 311231 | | XIE Qingyu | Zhejiang Transfar Whyyon Chemical Co., Ltd., Hangzhou, Zhejiang Province, 311231 | 311231 | | YANG Lei | Zhejiang Transfar Whyyon Chemical Co., Ltd., Hangzhou, Zhejiang Province, 311231 | 311231 | | ZHA Wangmin | Zhejiang Transfar Whyyon Chemical Co., Ltd., Hangzhou, Zhejiang Province, 311231 | 311231 | | WU Xiaomin | Zhejiang Transfar Whyyon Chemical Co., Ltd., Hangzhou, Zhejiang Province, 311231 | 311231 |
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| Abstract:The effects of five metal ions （Ca2+， Mg2+， Fe3+， Cu2+ ，and Mn2+） and six non-silicon stabilizers on residual H2O2 content in chemi-mechanical pulp bleaching process were studied. The results showed that Ca2+ and Mg2+ could increase the residual H2O2 content， while Fe3+，Cu2+， and Mn2+ reduced the residual H2O2 content significantly. The calcium and iron chelation values of hydroxyethyl diphosphonic acid （HEDP） were the highest in non-silicon stabilizer， with calcium chelation value of 434.0 mg/g and iron chelation value of 243.6 mg/g. Diethylenetriamine pentamethylene phosphonic acid （DTPMP） could effectively inhibit the ineffective decomposition of H2O2 in the bleaching process， the residual H2O2 content was up to 4.0%， and the whiteness of the pulp was 69.9%，when Mn2+ mass concentration was 1 mg/kg. |
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