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Application of Photoreactive Functional Polymer Gels to Water Quality Control Systems

光反应功能聚合物凝胶在水质控制系统中的应用

基本信息

批准号：
10555195
负责人：
KUBA Takahiro
金额：
$ 8.64万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10555195/
关键词：
Intelligent material Water quality Waste water treatment Functional polymer gel Photoreactive gel Photochromism NiPAAm-CH gel Thermo-responsive gel

项目摘要

1. Control and Prevention of Excessive Phytoplankton Growth by Photochromism :This study intends to investigate control and prevention of excessive phytoplankton growth by reducing light levels below those necessary for photosynthesis. The shield sunlight, photochromic (PC) films, which show photochromism such as colorless forms turn to colored forms by ultraviolet irradiation, were prepared. The PC films containing Spironaphthoxazine showed excellent photocoloration under sunlight irradiation, and they maintained the photocoloration for a long period. However the results of algal growth potential tests with the PC films were the opposite to what we had expected. While the growth of mixed algal cultures was controlled with the PC films under sunlight irradiation, the application of the PC films was not successful for the prevention of pure cultures M. aeruginosa growth. It was probably attributable to the difference between the wavelength for the PC films' maximum absorbance (600nm) an … More d the available wavelength for photosynthesis (680nm). The absorbance at 680nm by the PC films was 20%.2. Application of Photoreactive Functional Gels to Immobilization Matrices for Nitrification :Functional gels reversibly swell and shrink in response to environmental conditions such as light, temperature, and pH ; excessively light is a clean and easy environmental stimulus to control. The volume changes induced by light stimuli may induce the current of substrate between solvent phase and gel phase, and furthermore chlorophylin (CH) incorporated into polymer chains may have an affinity to substrate, thereby theses photoreactive gels immobilized microorganisms may have a possibility for acceleration of nitrification. The purpose of this study is to clarify these effects of acceleration experimentally. NiPAAm-CH gels immobilized microorganisms were prepared by blending of N-isopropylamide (NiPAAm) with CH. The volume changes of the gels in response to light irradiation were observed clearly. Batch experiments showed that the gels had a possibility for acceleration of nitrification. Less

1.通过光致变色控制和防止浮游植物过度生长：本研究旨在通过将光照水平降低到光合作用所需的水平以下来研究控制和防止浮游植物过度生长。制备了屏蔽阳光的光致变色（PC）薄膜，该薄膜在紫外线照射下表现出无色形态转变为有色形态等光致变色性。含有螺萘恶嗪的PC膜在太阳光照射下表现出优异的光致变色，并且它们在长时间内保持光致变色。然而，用PC膜进行藻类生长潜力测试的结果与我们预期的相反。尽管在阳光照射下用PC膜控制混合藻类培养物的生长，但PC膜的应用对于防止纯培养物M.铜绿菌生长这可能归因于PC膜的最大吸收波长（600 nm）和 ...更多信息 d光合作用的有效波长（680 nm）。PC膜在680 nm处的吸光度为20%.光反应性功能凝胶在硝化固定基质中的应用：功能凝胶可逆地膨胀和收缩，以响应环境条件，如光，温度和pH值;过度的光是一个干净的，容易控制的环境刺激。光刺激引起的体积变化可以诱导基质在溶剂相与凝胶相之间流动，而且叶绿素（CH）被引入到聚合物链中可能对基质具有亲和力，因此这些光反应凝胶固定化微生物可能具有加速硝化的可能性。本研究的目的是澄清这些影响的加速度实验。将N-异丙基酰胺（NiPAAm）与CH共混，制备了NiPAAm-CH凝胶固定化微生物，并观察了凝胶在光照下的体积变化。批实验表明，凝胶有可能加速硝化。少