化工学报2016，Vol.67Issue(10)：4461-4467,7.DOI:10.11949/j.issn.0438-1157.20160408
H2O2预氧化对BFA复合融雪剂性能的影响及其融雪机理
Effect of H2O2 oxidation on property of BFA compound snow-melting agent and its snow-melting mechanism
摘要
Abstract
Biochemical fulvic (BFA) was degraded by hydrogen peroxide (H2O2) before it compounded with calcium salts to be the snow-melting agent. The effect of H2O2concentration, temperature and pH on the freezing point of BFA compound was studied, and its snow-melting mechanism was analyzed by UV, FTIR and GPC. The optimal conditions in degradation were as follows: ratio of H2O2to BFA was 1.5 ml/g, temperature 35℃ and pH 7.5, at which BFA had been degraded for 120 min and the freezing point of BFA compound reduced by about 27%. The results showed that H2O2resulted in the ring opening of some complex aromatic hydrocarbon and oxidation of some unsaturated aliphatic hydrocarbons to produce lots of small-molecular carboxylic acid, alcohol, phenol and alkene arose, which formed some copolymer under Ca2+complexation. They played the dominant role in ice or snow melting. The experiment results indicated that it was key in improving the property of BFA snow-melting agent and increasing the hydrophilic functional groups of carboxy (COOH), hydroxyl (OH) and phenolic hydroxyl (phOH) in BFA.关键词
融雪剂/生化黄腐酸/H2O2/降解/融雪化冰性能Key words
snow-melting agent/biochemical fulvic/hydrogen peroxide/degradation/performance of melting ice分类
化学化工引用本文复制引用
韩永萍,龚平,刘红梅,周文平,贺志福..H2O2预氧化对BFA复合融雪剂性能的影响及其融雪机理[J].化工学报,2016,67(10):4461-4467,7.基金项目
北京市教委科技提升项目（ PXM2014-0142309-07-000080）。@@@@Foundation item：supported by the Science and Technology Foundation of Beijing Municipal Education Commission (PXM2014-0142309-07-000080) （PXM2014-0142309-07-000080）
