摘要
以甲烷生物抑制和长效缓释技术为基础,制备了石蜡/松香复合基质的甲烷缓释抑制剂。考察了乙炔和钙离子的释放情况,当碳化钙/石蜡比例为1:1、缓释剂直径为10mm时可获得较好的缓释效果,包裹醋酸纤维(CA)膜对缓释有明显的促进作用。当基质中添加松香含量达到20%时,缓释145d的释放度仅为28.42%。Sinclair&Peppas经验扩散模型可以很好地预测乙炔的释放过程。基于复合基质扩散特性推演出了修正的Higu-chi理论模型,并获得了有效扩散系数。
The slow-release inhibitors were prepared based on the technology of bio-inhibition on methanogens and slow-release.The process optimization on release of acetylene and Ca2＋ was carried out,and it was found that when the ratio of calcium carbide to paraffin wax was 1：1 and the diameter of slow-release inhibitor was 10 mm,the release time was longer.Additionally,the inhibitor coated with cellulose acetate （CA） had better effect on slow-release.The ratio of release reached 28.42% after releasing 145 d with the content of rosin 20%.Empirical diffusion formula of Sinclair Peppas can describe the release process well.Moreover,a mechanism model was derived based on the Higuchi model and the diffusion coefficients were acquired.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2010年第5期1307-1312,共6页
CIESC Journal
基金
国家高技术研究发展计划项目(2007AA06Z349)
重庆市自然科学基金项目(CSTC2008BB7332)~~
关键词
缓释
碳化钙
甲烷抑制
扩散模型
slow-release
calcium carbide
methane inhibition
diffusion model
