HAN Yongping, GONG Ping, LIU Hongmei, et al. 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. DOI: 10.11949/j.issn.0438-1157.20160408.
HAN Yongping, GONG Ping, LIU Hongmei, et al. 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. DOI: 10.11949/j.issn.0438-1157.20160408.DOI:
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.