| 固定化梭形气芽孢杆菌在降解废水时微观形态的观察和比较 |
| 摘要点击 1262 全文点击 1493 投稿时间：2002-06-14 修订日期：2002-10-21 |
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| 中文关键词 固定化细胞 废水处理 海藻酸钙 聚乙烯醇 多孔陶瓷 |
| 英文关键词 immobilized cells wastewater treatment calcium alginate gel polyvinyl alcohol microporous ceramics |
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| 中文摘要 |
| 针对含有油墨的废水,筛选到1株微生物菌种,经鉴定为梭形气芽孢杆菌(Aerobacillus fusiformis).分别用海藻酸钙,聚乙烯醇(PVA)和多孔陶瓷作为载体固定化梭形气芽孢杆菌,比较其在处理油墨废水时微观形态的变化情况.通过扫描电子显微镜(SEM)对固定化梭形气芽孢杆菌的微观形态进行观察,发现海藻酸钙在处理含油墨废水时容易溶解,用PVA作为载体时,由于细胞被包埋在PVA内部,和底物的接触时扩散阻力较大,因而废水中COD的去除效率较低.而用多孔陶瓷固定化细胞,不仅简便易行,固定牢固,而且对废水COD的去除效果也较好. |
| 英文摘要 |
| Aiming at printing ink wastewater, a strain of bacterium was isolated from activated sludge, and identified as Aerobacillus fusiformis . The Aerobacillus fusiformis was respectively immobilized in calcium alginate gel, polyvinyl alcohol (PVA) and microporous ceramics and their microstructure were observed by scanning electron microscope (SEM). It was found that calcium alginate gel might dissolve in the wastewater, and the activity was restricted as cells wrapped in PVA, so the COD removal ratio was low. The method of immobilized cells using microporous ceramics is simple and COD removal efficiency can be achieved. In addition, the immobilized bacterium could not be separated easily from the ceramics in the wastewater. |
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