Effect of bacteria on the transport and deposition of multi-walled   carbon nanotubes in saturated porous media

doi:10.1016/j.envpol.2016.03.058

CORC > 北京大学 > 环境科学与工程学院

	Effect of bacteria on the transport and deposition of multi-walled carbon nanotubes in saturated porous media
	Han, Peng ; Zhou, Dan ; Tong, Meiping ; Kim, Hyunjung
刊名	ENVIRONMENTAL POLLUTION
	2016
关键词	MWCNTs Bacteria Enhanced transport Deposition Porous media TITANIUM-DIOXIDE NANOPARTICLES NATURAL ORGANIC-MATTER GOETHITE-COATED SAND QUARTZ SAND HUMIC-ACID ESCHERICHIA-COLI PSEUDOMONAS-AERUGINOSA SILVER NANOPARTICLES SOLUTION CHEMISTRY ZNO NANOPARTICLES
DOI	10.1016/j.envpol.2016.03.058
英文摘要	The influence of bacteria on the transport and deposition behaviors of carbon nanotubes (CNTs) in quartz sand was examined in both NaCl (5 and 25 mM ionic strength) and CaCl2 (0.3 and 1.2 mM ionic strength) solutions at unadjusted pH (5.6-5.8) by direct comparison of both breakthrough curves and retained profiles in both the presence and absence of bacteria. Two types of widely utilized CNTs, i.e., carboxyl and hydroxyl-functionalized multi-walled carbon nanotubes (MWCNT-COOH and MWCNT-OH, respectively), were employed as model CNTs and Escherichia coli was utilized as the model bacterium. The results showed that, for both types of MWCNTs under all examined conditions, the breakthrough curves were higher in the presence of bacteria, while the retained profiles were lower, indicating that the co-presence of bacteria in suspension increased the transport and decreased the deposition of MWCNTs in porous media, regardless of ionic strength or ion valence. Complementary characterizations and extra column tests demonstrated that competition by bacteria for deposition sites on the quartz sand surfaces was a major (and possibly the sole) contributor to the enhanced MWCNTs transport in porous media. (C) 2016 Published by Elsevier Ltd.; National Nature Science Foundation of China [41422106, 21177002]; SCI(E); EI; PubMed; ARTICLE; tongmeiping@pku.edu.cn; kshjkim@jbnu.ac.kr; 895-903; 213
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/434269]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Han, Peng,Zhou, Dan,Tong, Meiping,et al. Effect of bacteria on the transport and deposition of multi-walled carbon nanotubes in saturated porous media[J]. ENVIRONMENTAL POLLUTION,2016.
APA	Han, Peng,Zhou, Dan,Tong, Meiping,&Kim, Hyunjung.(2016).Effect of bacteria on the transport and deposition of multi-walled carbon nanotubes in saturated porous media.ENVIRONMENTAL POLLUTION.
MLA	Han, Peng,et al."Effect of bacteria on the transport and deposition of multi-walled carbon nanotubes in saturated porous media".ENVIRONMENTAL POLLUTION (2016).