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Simultaneous removal of the NOx and chlorinated organic compounds contained in exhaust gas from incinerator

同时去除焚烧炉废气中的NOx和氯化有机化合物

基本信息

批准号：
13650856
负责人：
NAGASE Hiroyasu
金额：
$ 2.24万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650856/
关键词：
Freshwater microalgae Green algae Blue-green algae NOx 2,4-Dichlorophenol Chlorinated organic compound Incinerator Exhaust gas クロロフェノール類

项目摘要

Nitrogen oxides and chlorinated organic compounds are often found in exhaust gas from incinerator. The treatment of exhaust gas from small-scale incinerator must be carried out under the variable conditions. The catalytic reduction process, which has been used practically for the NOx treatment, is unsuitable under these conditions. Microalgae seems to be suitable for the incinerator exhaust gas treatment, because microalgae have high ability to adapt themselves to the given environment Though the marine green alga has been used for NOx removal in our previous study, freshwater microalgae were useful in the case of exhaust gas from the incinerator, which is often built in the inland location. Freshwater microalgae were screened for the treatment of the incinerator exhaust gas, by using 2,4-dichlorophenol as a model compound. Following results were concretely obtained.1. Selection of freshwater microalgae.Green alga, Chlorella fusca var. vacuolata, was selected from freshwater green algae and blue-green algae as a strain which has ability to remove both NOx and 2,4-dichlorophenol.2. Removal of NOx.The culture condition for effective NOx removal by C. fusca was examined. In addition, the bioreactor suitable for NOx removal by this strain was also investigated.3. Removal of chlorophenols.Removal ability of chlorophenols (o-chlorophenol, m-chlorophenol, p-chlorophenol, 2,4,6-trichlorophenol) was investigated, and it was found that this strain had the ability to remove various chlorophenols.4. Simultaneous removal of the NOx and chlorophenols.The culture condition suitable for simultaneous removal of 2,4-dichlorophenol and NOx was examined using this strain.

在焚化炉的废气中经常发现氮氧化物和氯化有机化合物。小型焚烧炉废气的处理必须在可变条件下进行。目前用于NOx处理的催化还原法在这些条件下是不合适的。微藻似乎适合于焚烧炉废气的处理，因为微藻对给定环境的适应能力很强。虽然在我们之前的研究中已经使用了海洋绿藻来去除NOx，但淡水微藻在焚烧炉废气的处理中是有用的，而焚烧炉通常建在内陆位置。以2,4-二氯酚为模型化合物，筛选淡水微藻处理垃圾焚烧炉废气。具体得到如下结果：淡水微藻的选择。从淡水绿藻和蓝绿藻中筛选出了一株具有脱除NOx和2,4-二氯酚能力的绿藻小球藻（Chlorella fusca var. vacuolata）。去除氮氧化物。考察了褐梭菌有效脱除NOx的培养条件。此外，还研究了适合该菌株脱除NOx的生物反应器。氯酚的去除。考察了该菌株对邻氯酚、间氯酚、对氯酚、2,4,6-三氯酚等氯酚的去除能力，发现该菌株具有对多种氯酚的去除能力。同时去除氮氧化物和氯酚。利用该菌株考察了同时去除2,4-二氯酚和NOx的适宜培养条件。