养殖固废在硫酸溶液中的水解特性

Hydrolysis Properties of Livestock Manure in Sulphuric Acid Solutions

养殖固废掺杂过磷酸钙有机磷肥工艺中养殖固废与硫酸间的相互作用不仅影响着磷转化率,同时影响养殖固废有机组分的变化。本文以鸡粪为研究对象,其水解率为指标,采用L16(45)正交设计研究了鸡粪细度、硫酸初始浓度、反应物质量比、反应温度和反应时间对鸡粪在硫酸溶液体系中水解过程的影响。结果表明影响因素显著性依次为反应物质量比、反应温度、反应时间、硫酸浓度、鸡粪细度,鸡粪水解率与其细度呈正相关关系。鸡粪比表面积及其单位耗酸量、美拉德反应是制约鸡粪在硝酸和磷酸中水解反应的内因。研究结果为养殖固废掺杂有机磷肥的研发和推广提供了理论基础。

Reactions between farming manure and sulphuric acid influenced the organic ingredient diversities as well as phosphate conversion rate in doped - manure single superphosphate technology. To investigate the hydrolysis of chicken manure in sulphuric acid solution impacted by manure fineness, acid initial concentration, ratio of manure to acid （W/ W） , reaction temperature and time, orthogonal experiments were designed. Results showed the order of factors significantly affected on chicken manure hydrolysis was ratio of manure to acid, reaction temperature, reaction time, acid initial concentration, and manure fineness. The hydrolysis rate and chicken fineness presented a positive correlation. Specific surface area of chicken manure, acid consumption per unit mass of the manure, and Maillard reaction were restrictively intrinsic factors of chicken manure hydrolysis process in sulphuric acid solutions. Conclusions contributed to the research and application of doped - livestock manure organic phosphate fertilizers.