文献类型：期刊文献

中文题名：H_2O_2预氧化对BFA复合融雪剂性能的影响及其融雪机理

英文题名：Effect of H_2O_2 oxidation on property of BFA compound snow-melting agent and its snow-melting mechanism

作者：韩永萍[1];龚平[1];刘红梅[1];周文平[1];贺志福[1]

第一作者：韩永萍

通讯作者：Han, Yongping

机构：[1]北京联合大学生物工程学院,生物质废弃物资源化利用北京市重点实验室,北京100023

第一机构：北京联合大学生物化学工程学院生物医药系

年份：2016

卷号：67

期号：10

起止页码：4461-4467

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：20164703037068);Scopus(收录号：2-s2.0-85092429268);北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：北京市教委科技提升项目(PXM2014-0142309-07-000080)

语种：中文

中文关键词：融雪剂;生化黄腐酸;H2O2;降解;融雪化冰性能

外文关键词：snow-melting agent; biochemical fulvic; hydrogen peroxide; degradation; performance of melting ice

摘要：针对H2O2预氧化对生化黄腐酸(BFA)钙盐复合物的融雪化冰性能影响及其机理进行了研究。结果表明,在H_2O_2与BFA质量比为1.5、p H 7.5、35℃的最佳预降解条件下反应120 min,可使BFA钙盐复合物的冰点降低27%。紫外光谱、红外光谱及凝胶色谱分析结果表明,BFA经H_2O_2氧化降解后,一些复杂的芳香族有机物发生降解甚至开环、不饱和脂肪烃被氧化,产生了大量小分子羧酸、醇、酚及烯烃等有机物。它们在Ca2+的络合作用下形成了小分子聚合物或共聚物,在融雪化冰中起主要作用。增加BFA结构中的COOH、OH和ph OH等亲水性基团含量是提高BFA钙盐复合融雪剂性能的关键。
Biochemical fulvic（BFA） was degraded by hydrogen peroxide（H_2O_2） before it compounded with calcium salts to be the snow-melting agent. The effect of H_2O_2 concentration, 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 H_2O_2 to 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 H_2O_2 resulted 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（ph OH） in BFA.