Study on the Reduction Technology of Environmental Load for Human Living and Life by using Wakkanai Siliceous Shale in Hokkaido

利用北海道稚内硅质页岩降低人类生活和生活环境负荷技术研究

基本信息

批准号：
18310065
负责人：
NAGANO Katsunori
金额：
$ 10.82万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

项目摘要

Wakkanai Siliceous Shale (WSS), a natural porous material with 4 to 20 nm of meso-pore, is widely used as an intelligent humidity control material for housing. In this study, an improvement of water vapor adsorption ability by soaking WSS in deliquescent solution, enhancement of VOC adsorption of WSS modified by alkaline solution, and deodorization effect of odor has been investigated.The preparation of WSS containing deliquescent material was performed by the impregnation into the LiC1 and CaCl_2 solution. The amount of water adsorption increased with increasing LiC1 and CaCl_2, and it showed 900 mg/g at 95 %RH with 20 wt % of LiC1-solution (supported a mount of LiC1 was 120 mg/g). However, at high humidity condition, the elution of deliquescent materials from the pore was observed. To solve this problem, an optimal amount of deliquescent in WSS was defined by the change of RGB color obtained from the image scanner. The maximum amount of water. Adsorption is 330 mg/g (19.3mg/g-LiCl) and 320 mg/g (36.3mg/g-CaCl_2) at 95 %RH. The stable ability of the water adsorption/desorption can be achieved over 200 times of repetition test, which is stepwise change from 23 ℃ and 75 %RH to 40 ℃ and 28 %RH in every 6 hours interval.The pore distribution of WSS was changed by using alkaline solution. Particularly, in the treatment of 2mol/l of NaOH solution, toluene adsorption increases 1.5 times, because of making of 2.5nm pore.From the evaluation of the odor reduction with WSS, it was found that the ammonia, trimetylamine, isovaleric acid and acetaldehyde showed good adsorption performance compared to charcoal. However, the performance of sulfur component such as hydrogen sulfide and methyl mercaptan in WSS were much lower than it in charcoal. In addition, the effect of continuous deodorization for isovaleric acid (1 ppm of inlet concentration) was confirmed over 50 days by using 5g of WSS in glass column at 25 ℃ and 50 %RH.

Wakkanai Siliceous页岩（WSS）是一种天然多孔材料，具有4至20 nm的中孔，被广泛用作住房的智能湿度控制材料。在这项研究中，通过浸泡WSS浸泡WSS，可以提高水蒸气的能力，增强VOC的增强，增加了通过酒精解决方案修饰的WSS的吸附，并研究了异味的除臭效应。含有偏离的WSS材料的制备由含量含量的脱离材料进行了液化材料。随着LIC1和CACL_2的增加，水的吸附量增加，并且在95％RH时显示900 mg/g，LIC1-溶液的20 wt％（支持的LIC1山为120 mg/g）。然而，在高湿度条件下，观察到从孔中的偏离材料洗脱。为了解决这个问题，WSS中最佳的偏差是由从图像扫描仪获得的RGB颜色的变化来定义的。最大水量。在95％RH时，吸附为330 mg/g（19.3 mg/g-licl）和320 mg/g（36.3 mg/g-cacl_2）。在重复测试的200倍以上，水吸附/解吸的能力稳定，在每6小时的间隔内从23°和75％rh和28％的RH逐步变化。通过使用酒精溶液更改WSS的孔分布。特别是，在处理2mol/L的NaOH溶液时，由于制造2.5nm的孔，甲苯吸附增加了1.5倍。从对WSS的气味降低的评估中，可以发现与木炭相比，氨，三酰胺，等甲基酸和乙醛表现出良好的吸附性能。然而，硫成分（例如硫化氢和WSS中的甲基近亲）的性能远低于木炭中。另外，通过在50天内使用5G的玻璃柱中的5G WSS在25℃和50％RH中使用5G的WSS在50天内证实了连续除臭化对等酸（1 ppm的入口浓度）的影响。