Strong influence of surfactants on virgin hydrophobic microplastics adsorbing ionic organic pollutants

吸附 污染物 化学 肺表面活性物质 疏水效应 微塑料 离子键合 化学工程 环境化学 聚乙二醇 聚氯乙烯 有机化学 离子 生物化学 工程类
作者
Yan Xia,Juanjuan Zhou,Yanyan Gong,Zhanjun Li,Eddy Y. Zeng
出处
期刊:Environmental Pollution [Elsevier]
卷期号:265: 115061-115061 被引量:67
标识
DOI:10.1016/j.envpol.2020.115061
摘要

Microplastic (MP) pollution has become an area of increasing concern because MPs accumulate various types of pollutants. Many previous studies have explored the interactions between MPs and hydrophobic pollutants. However, little research has been conducted on hydrophilic pollutants, which are of much higher concentration and ubiquitous in environment. Surfactants cause hydrophobic MPs to become hydrophilic, which may significantly enhance their capacities to adsorb hydrophilic pollutants. This study explored the influence of co-existing surfactants on the adsorption of ionic organic pollutants by MPs, and found that the presence of an ionic surfactant could significantly enhance the capacity of polyvinyl chloride (PVC, 0.2 mm) MPs to adsorb pollutants with opposite charges. The Langmuir methylene blue adsorption capacity of PVC could be increased from 172 to 4417 ppm in the presence of a sodium dodecyl benzene sulfonate surfactant. Nonionic surfactants impeded the adsorption of both cationic and anionic pollutants due to the steric resistance of the hydrophilic polyethelene glycol chains. The electrostatic interaction mechanism dominated the interfacial behaviors of ionic pollutants on surfactant-adsorbed MP interfaces. The effects of the surfactants were further verified using four different model pollutants and six surfactants. The adsorption capacities of real environmental MPs, including PVC, polyethylene (PE), polypropylene (PP), and polystyrene (PS), increased by three to twenty-six times. The adsorption properties of MPs may be determined by the presence of co-existing surfactants, rather than their polymer species or additives.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
在水一方应助complexshao采纳,获得10
刚刚
高挑的涛发布了新的文献求助10
刚刚
CMCM发布了新的文献求助30
刚刚
烟花应助ured采纳,获得10
刚刚
dlm发布了新的文献求助10
刚刚
1秒前
CodeCraft应助丁娜采纳,获得10
2秒前
榴下晨光发布了新的文献求助10
2秒前
2秒前
沐子发布了新的文献求助10
3秒前
wanci应助等风的人采纳,获得10
3秒前
Foch完成签到,获得积分10
4秒前
4秒前
LX发布了新的文献求助10
4秒前
lanshuitai发布了新的文献求助10
4秒前
5秒前
研友_LwbeX8完成签到,获得积分10
5秒前
Jcer发布了新的文献求助10
5秒前
5秒前
6秒前
7秒前
8秒前
8秒前
9秒前
ws发布了新的文献求助10
9秒前
甜甜的半仙完成签到 ,获得积分10
9秒前
等风的人完成签到,获得积分10
9秒前
慕青应助钟可可采纳,获得10
9秒前
10秒前
10秒前
方方完成签到,获得积分10
11秒前
丘比特应助xiaoliuyaouli采纳,获得10
11秒前
Ava应助999采纳,获得30
11秒前
12秒前
12秒前
蓝胖子应助Jcer采纳,获得30
12秒前
caigc发布了新的文献求助30
12秒前
iii完成签到,获得积分10
13秒前
动听平露完成签到,获得积分10
13秒前
高分求助中
The ACS Guide to Scholarly Communication 2500
Microlepidoptera Palaearctica, Volumes 1 and 3 - 13 (12-Volume Set) [German] 1122
The Data Economy: Tools and Applications 1000
Diamonds: Properties, Synthesis and Applications 800
PraxisRatgeber Mantiden., faszinierende Lauerjäger. – Buch gebraucht kaufen 700
Mantiden - Faszinierende Lauerjäger – Buch gebraucht kaufen 700
Ожившие листья и блуждающие цветы. Практическое руководство по содержанию богомолов [Alive leaves and wandering flowers. A practical guide for keeping praying mantises] 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3095922
求助须知:如何正确求助?哪些是违规求助? 2747787
关于积分的说明 7596792
捐赠科研通 2399425
什么是DOI,文献DOI怎么找? 1273033
科研通“疑难数据库(出版商)”最低求助积分说明 615515
版权声明 598948