H2O2预氧化对BFA复合融雪剂性能的影响及其融雪机理

doi:10.11949/j.issn.0438-1157.20160408

化工学报 ›› 2016, Vol. 67 ›› Issue (10): 4461-4467.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

韩永萍, 龚平, 刘红梅, 周文平, 贺志福

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

收稿日期:2016-03-31 修回日期:2016-06-22 出版日期:2016-10-05 发布日期:2016-10-05
通讯作者: 韩永萍
基金资助:
北京市教委科技提升项目（PXM2014-0142309-07-000080）。

Effect of H₂O₂ oxidation on property of BFA compound snow-melting agent and its snow-melting mechanism

HAN Yongping, GONG Ping, LIU Hongmei, ZHOU Wenping, HE Zhifu

Beijing Key Laboratory of the Resource Utilization of Biomass Waste, Biochemical Engineering College, Beijing Union University, Beijing 100023, China

Received:2016-03-31 Revised:2016-06-22 Online:2016-10-05 Published:2016-10-05
Supported by:
supported by the Science and Technology Foundation of Beijing Municipal Education Commission (PXM2014-0142309-07-000080).

摘要/Abstract

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H₂O₂与BFA质量比为1.5、pH 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H₂O₂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。

关键词: 融雪剂, 生化黄腐酸, H₂O₂, 降解, 融雪化冰性能

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 H₂O₂ 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 H₂O₂ 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 H₂O₂ 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.

Key words: snow-melting agent, biochemical fulvic, hydrogen peroxide, degradation, performance of melting ice

中图分类号:

TQ041.8

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.

HAN Yongping, GONG Ping, LIU Hongmei, ZHOU Wenping, HE Zhifu. Effect of H₂O₂ oxidation on property of BFA compound snow-melting agent and its snow-melting mechanism[J]. CIESC Journal, 2016, 67(10): 4461-4467.

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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

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