微生物诱导的碳酸沉使用lysinibacillus sp. :来自Uttarakhand的Ureolytic细菌用于土壤稳定
Aparna Ganapathy Vilasam Sreekala1, Sreelakshmi Nair1, Vinod Kumar Nathan2
1School of Chemical and Biotechnology, SASTRA Deemed to Be University, Thirumalasamudram, Thanjavur, Tamil Nadu, 613 401, India.
Current microbiology
|October 4, 2024
概括
研究人员确定了lysinibacillus sp. 的存在. 微生物诱导碳酸沉 (MICP) 的细菌,以改善土壤的稳定性. 优化的条件显著提高了尿酶活性和石沉,为土壤整治提供了环保的解决方案.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 地质技术工程 地质技术工程
背景情况:
- 微生物诱导的碳酸沉 (MICP) 是改善土壤的可持续方法.
- 尿酸酶产生细菌的尿素水解是MICP的一个关键机制.
- 本地细菌菌株为高效的生物矿物化提供了潜力.
研究的目的:
- 选和识别来自Uttarakhand土壤的本地尿溶性细菌.
- 优化生长条件以增强尿酶活性和石沉.
- 评估MICP替代营养来源的有效性.
主要方法:
- 对土壤样本进行尿溶性细菌的查.
- 通过响应表面方法优化pH值,尿素度,注射剂度和化时间.
- 使用合成介质和替代基质 (牛尿,蛋) 评估石沉.
主要成果:
- 孤立的莱西尼菌种Lysinibacillus sp. 作为一种高度活跃的尿溶性菌株.
- 在优化的条件下 (pH 8,0.8 M尿素,3%注射剂,48小时化) 尿酸酶活性增加了三倍 (33.7 U/mL).
- 取得了显著的碳酸沉,增加了pH值和氨释放,观察到合成和替代基质.
结论:
- 莱西尼细菌 (Lysinibacillus sp.) 是一种植物. 显示出基于MICP的土壤稳定具有很高的潜力.
- 优化的条件和成本效益高的基板提高了生物矿物化的效率.
- 这项研究提供了一种经济和可行的方法,用于稳定 उत्तराखंड的脆弱土壤,防止山体滑坡和侵蚀.
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