已入深夜,您辛苦了!由于当前在线用户较少,发布求助请尽量完整的填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!祝你早点完成任务,早点休息,好梦!

Transport characteristics of polystyrene microplastics in saturated porous media with biochar/Fe3O4-biochar under various chemical conditions

生物炭 吸附 化学 微塑料 腐植酸 多孔性 聚苯乙烯 离子强度 化学工程 多孔介质 环境化学 水溶液 有机化学 聚合物 热解 工程类 肥料
作者
Xiaoxia Wang,Yitong Dan,Yinzhu Diao,Feihong Liu,Huan Wang,Wenjing Sang,Yalei Zhang
出处
期刊:Science of The Total Environment [Elsevier]
卷期号:847: 157576-157576 被引量:11
标识
DOI:10.1016/j.scitotenv.2022.157576
摘要

Magnetically modified biochar, with a rougher surface and more positive surface charge, may interact with microplastics (MPs) after being applied to soil, potentially altering the fate and transport of MPs in porous media. In this study, the transport and retention behavior of polystyrene microplastics (PSMPs) in a sandy porous media mixed with biochar/Fe3O4 modified biochar (Fe3O4-biochar) was investigated under various chemical conditions (humic acid (HA), ionic strength (IS) and cationic types (Na+/Ca2+)). The results showed that the addition of biochar and Fe3O4-biochar can hinder the transport of PSMPs in porous media without HA, and that Fe3O4-biochar was more effective in inhibiting the transport of PSMPs through electrostatic adsorption and complexation, with an optimum retention efficiency of 92.36 %. HA significantly attenuated the retention of PSMPs in both porous media through electrostatic repulsion, steric resistance and competitive adsorption under 1 mM Na+ solutions, and the mobility of PSMPs in Fe3O4-biochar/sand was enhanced more significantly than in biochar/sand with the increase of HA concentration. IS significantly inhibited the transport of PSMPs in both porous media in the absence of HA, but there was an antagonistic effect of HA and IS on the transport of PSMPs in the presence of HA, with the facilitative effect of HA being stronger than the inhibitory effect of IS. Ca2+ was consistently more effective in inhibiting the transport of PSMPs than Na+ under all test conditions, and HA promoted the transport of PSMPs in all Na+ solutions, while it inhibited the transport of PSMPs in high IS (10 mM) with Ca2+ solutions. In addition, HA, Fe3O4-biochar and PSMPs tend to form larger aggregates under the complex interactions of Ca2+, leading to increased retention of PSMPs in porous media. The two-site kinetic retention models suggested that the retention of PSMPs in porous media with biochar was predominantly reversible attachment effect, while retention in porous media with Fe3O4-biochar was predominantly an irreversible straining effect.
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
喝酸奶不舔盖完成签到 ,获得积分10
3秒前
冰糖葫芦娃完成签到 ,获得积分10
4秒前
Charlie完成签到 ,获得积分10
4秒前
BaHdana-发布了新的文献求助10
4秒前
7秒前
mlzmlz完成签到,获得积分10
10秒前
11秒前
zeroy完成签到,获得积分10
12秒前
cc0514gr完成签到,获得积分10
12秒前
楼亦玉完成签到,获得积分10
13秒前
lyn完成签到 ,获得积分10
13秒前
superbanggg完成签到,获得积分10
14秒前
bopbopbaby完成签到 ,获得积分10
15秒前
Lucas应助科研通管家采纳,获得10
16秒前
所所应助科研通管家采纳,获得10
16秒前
隐形曼青应助科研通管家采纳,获得10
16秒前
Xu完成签到 ,获得积分10
17秒前
superbanggg发布了新的文献求助10
17秒前
英姑应助coldspringhao采纳,获得10
17秒前
小李完成签到 ,获得积分10
19秒前
0514gr完成签到,获得积分10
22秒前
含蓄的依瑶完成签到 ,获得积分10
24秒前
拥有八根情丝完成签到 ,获得积分10
26秒前
BaHdana-完成签到,获得积分20
26秒前
陈炳超完成签到 ,获得积分10
31秒前
32秒前
榴莲姑娘完成签到 ,获得积分10
36秒前
AAA完成签到,获得积分10
36秒前
36秒前
tuanheqi应助水生的鱼采纳,获得50
38秒前
幽默果汁完成签到 ,获得积分10
40秒前
NexusExplorer应助喵了个咪采纳,获得10
41秒前
完美世界应助朴素的如豹采纳,获得10
45秒前
47秒前
从心从心发布了新的文献求助10
48秒前
zz完成签到,获得积分10
48秒前
51秒前
hehe发布了新的文献求助10
53秒前
hh应助橙橙橙采纳,获得10
53秒前
LeungYM完成签到 ,获得积分10
57秒前
高分求助中
rhetoric, logic and argumentation: a guide to student writers 1000
QMS18Ed2 | process management. 2nd ed 1000
One Man Talking: Selected Essays of Shao Xunmei, 1929–1939 1000
A Chronicle of Small Beer: The Memoirs of Nan Green 1000
From Rural China to the Ivy League: Reminiscences of Transformations in Modern Chinese History 900
Eric Dunning and the Sociology of Sport 850
Operative Techniques in Pediatric Orthopaedic Surgery 510
热门求助领域 (近24小时)
化学 医学 材料科学 生物 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 物理化学 催化作用 免疫学 细胞生物学 电极
热门帖子
关注 科研通微信公众号,转发送积分 2919062
求助须知:如何正确求助?哪些是违规求助? 2560131
关于积分的说明 6926373
捐赠科研通 2219209
什么是DOI,文献DOI怎么找? 1179724
版权声明 588587
科研通“疑难数据库(出版商)”最低求助积分说明 577289