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不同水力条件对CANON颗粒污泥微生物胞外聚合物的影响 被引量:6
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作者 罗小娟 《环境科技》 2017年第2期17-22,共6页
以Anammox颗粒污泥和市政好氧污泥作为接种污泥,利用EGSB反应器通过表面曝气方式培养CANON颗粒污泥,在考察不同水力条件下CANON系统从启动期到稳定期脱氮效能变化的基础上,通过长期试验及间歇试验,探究了不同脱氮效能时期污泥胞外聚合物... 以Anammox颗粒污泥和市政好氧污泥作为接种污泥,利用EGSB反应器通过表面曝气方式培养CANON颗粒污泥,在考察不同水力条件下CANON系统从启动期到稳定期脱氮效能变化的基础上,通过长期试验及间歇试验,探究了不同脱氮效能时期污泥胞外聚合物(extracellular polymeric substance,EPS)长期性及周期性的变化。结果表明,R1和R2反应器分别于99 d和109 d成功启动了CANON系统,启动后对NH_4^+-N的去除率分别为:57.95%,87.15%,对TN的去除率分别为:56.31%,76.06%。系统稳定后,EPS周期性的变化趋势是先增加后降低最后逐渐平稳,与蛋白质(PN)的变化趋势非常一致,达到周期内稳定的时间与周期内水质氮素稳定时间相似。 展开更多
关键词 重CANON工艺 颗粒污泥 包外聚合物 表面曝气 剪切力
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Infrared Spectroscopy for Studying Foods and Biodegradable Packaging
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作者 Oksana Shulga Anastasiya Chorna Larisa Arsenieva Sergii Shulga 《Journal of Food Science and Engineering》 2016年第5期286-298,共13页
The results of study of foods and biodegradable film structure with the use of infrared spectroscopy (IR spectra) are presented. For the first time detailed decodings of IR spectra of some foods and biodegradable fi... The results of study of foods and biodegradable film structure with the use of infrared spectroscopy (IR spectra) are presented. For the first time detailed decodings of IR spectra of some foods and biodegradable film packaging materials are shown. Interpretation of the spectra of basic biopolymers of foods and biodegradable films is given. It is corroborated with the help of IR spectra that the chemical reactions in biopolymers when heated to 130 ~C do not occur, which makes it possible to use biologically valuable raw materials. Furthermore, the expediency of use of IR spectroscopy for studying changes in foods and films produced on biopolymer base is established. IR spectroscopy is a fast method that allows you to monitor changes that occur with the raw materials in the technological process. Previously, IR spectroscopy was used to identify the compounds in chemical synthesis. This study shows that IR spectra can be used for study of foods and biodegradable film structure. 展开更多
关键词 IR spectra biodegradable films FOODS biopolymers starch.
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