Biomineralized nanoparticles for the immobilization and degradation of crude oil-contaminated soil

作     者：Daoqing Liu Qianwei Li Enhui Liu Miao Zhang Jicheng Liu Chunmao Chen Daoqing Liu;Qianwei Li;Enhui Liu;Miao Zhang;Jicheng Liu;Chunmao Chen

作者机构：Key Laboratory of Water and Sediment Sciences(Ministry of Education)College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China State Key Laboratory of Heavy Oil ProcessingState Key Laboratory of Petroleum Pollution ControlChina University of Petroleum(Beijing)Beijing 102249China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2023年第16卷第10期

页      面：12238-12245页

核心收录：

学科分类：0710[理学-生物学] 0820[工学-石油与天然气工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 070205[理学-凝聚态物理] 0818[工学-地质资源与地质工程] 0903[农学-农业资源与环境] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0836[工学-生物工程] 0702[理学-物理学] 

基　　金：the National Natural Science Fundation of China(Nos.U20A20146 and 22278434) the Fundamental Research Funds for the Central Universities(No.2462023BJRC006) the National Key Research and Development Program of China(No.2019YFC1806201-01). 

主　　题：biomineralization degradation nanomineral nanoaggregates immigration 

摘      要：Accidental oil leaks and spills often cause server soil pollution,and in situ remediation is a powerful and economical treatment technology.While during in situ remediation process,unpredicted migration of petroleum hydrocarbon in heterogeneous soil will lead to a long-term source of persistent aquifer contamination.To reduce the migration of petroleum hydrocarbon and effectively improve the in situ remediation efficiency,herein,fungal biomineralization strategy was proposed for the immobilization of petroleum contaminants.A ureolytic fungi strain with crude oil-degradation ability was screened and identified as Chaetomium globosum.When incubated in medium containing Ca2+and crude oil,a mineral corona with spiny nanoparticles was formed at the edge of oil and the interface characters were analyzed using fluorescent pH and dissolved oxygen(DO)sensing films,respectively.Results indicated that biominerals preferred to aggregate around the edge of crude oil,providing favorable microenvironment for fungal growth and then leading to the increase of pH in the microenvironment,eventually accompanied by the formation of mineral corona.The mineral corona with numerous nanoparticles may act as a solid and stable shell,limiting or reducing the mobility of crude oil,and providing enough time for fungal biodegradation.After 28 days incubation,oilcontaminated soil treated with fungal biomineralization showed better immobilization ability for total petroleum hydrocarbon(TPH)under simulated acid-rain condition and higher TPH removal efficiency.This is the first demonstration for the immobilization of oil through fungal biomineralized nanoparticles,thus providing a novel strategy for the in situ remediation of oilcontaminated sites.