生物降解
生物修复
环境化学
化学
萘
微生物降解
土壤污染
污染物
微生物
污染
细菌
生物
有机化学
生态学
遗传学
作者
Srivalli Thimmarayan,Harshavardhan Mohan,G. V. S. L. Manasa,Karthi Natesan,Sophie A. Mahendran,Pavithra Muthukumar Sathya,Byung‐Taek Oh,R. Kumar,Rangasamy Sigamani Gandhimadhi,Arul Jayaprakash,Seralathan Kamala‐Kannan
标识
DOI:10.1016/j.envres.2023.117550
摘要
Naphthalene (NPT), a widely used household pest repellent and insecticide obtained from crude oil, serves as a toxic pollutant to non-target living matter. The stable and resistant nature of NPT makes it difficult to degrade through the physiochemical processes. The present study investigated the bacterial degradation of NPT isolated from crude oil-contaminated soil. Initially, the potent bacteria, Bacillus sp. GN 3.4, were isolated by enrichment culture method and subsequently assessed for NPT biodegradation. The optimum conditions for NPT biodegradation were pH 7.0 at 37 °C, 80 mg/L (NPT), 3% v/v (inoculum dose), and 7 days of treatment showed 100% biodegradation. Furthermore, GC–MS analysis revealed the presence of degradation metabolites, namely, salicylate and hydroquinone indicating potential metabolic pathways. Considering the water-solubility and non-toxic nature of these metabolites, the results imply that Bacillus sp. GN 3.4. could potentially play a role in bioremediation by aiding in eliminating NPT from the soil.
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