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首页> 外文期刊>Science and Technology of Advanced Materials >Degradation of lindane from aqueous solutions using iron sulfide nanoparticles stabilized by biopolymers
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Degradation of lindane from aqueous solutions using iron sulfide nanoparticles stabilized by biopolymers

机译：使用生物聚合物稳定的硫化铁纳米颗粒从水溶液中降解林丹

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Lindane (γ-hexachlorocyclohexane) is an organochlorine pesticide and a Persistent Organic Pollutant (POP). Lindane residues have been detected in drinking water sources and development of viable methods for their removal is a global priority. Iron based nanomaterials have been shown to effectively transform chlorinated organic compounds. However, their uses in the treatment of drinking water and beverages have toxicity concerns. In the present study, FeS nanoparticles were synthesized by the wet chemical method and were stabilized using a polymer from the basidiomycetous fungus, Itajahia sp. The stabilized nanoparticles could degrade lindane (5 mg/l) with an efficiency of 94% in 8 h. In a subsequent microbiological treatment, residual lindane, its partially degraded intermediates as well as the stabilizing polymer could be completely degraded in 1 h. The latter process facilitated aggregation of FeS, which could be easily removed by filtration. This novel integrated nano-biotechnological method holds the promise of providing an efficient, safe, and cost-effective solution to the problem of removal of chlorinated pollutants from water sources.
机译：林丹（γ-六氯环己烷）是一种有机氯农药和一种持久性有机污染物（POP）。已经在饮用水源中检测到林丹残留物，开发可行的去除方法是全球范围内的首要任务。铁基纳米材料已被证明可以有效地转化氯化有机物。然而，它们在饮用水和饮料处理中的用途具有毒性问题。在本研究中，FeS纳米颗粒通过湿化学方法合成，并使用来自担子菌真菌Itajahia sp。的聚合物稳定。稳定的纳米颗粒可以在8小时内以94％的效率降解林丹（5 mg / l）。在随后的微生物处理中，残留的林丹，其部分降解的中间体以及稳定化聚合物可在1小时内完全降解。后一个过程促进了FeS的聚集，可以很容易地通过过滤除去。这种新颖的综合纳米生物技术方法有望为解决从水源中去除氯化污染物的问题提供一种有效，安全且具有成本效益的解决方案。

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