检索结果-南通市图书馆

Stability and interaction of biochar and iron mineral nanoparticles:effect of pH,ionic strength,and dissolved organic matter

引用

Biochar 2022年第1期4卷 404-418页

作者： Yong Liu Jie Ma Jiaoli Gao Xingyi Chen Xiaoxue Ouyang Liping Weng Haiming Li Yali Chen Yongtao Li Key Laboratory for Environmental Factors Control of Agro-Product Quality Safety Ministry of Agriculture and Rural AffairsTianjin 300191China Agro-Environmental Protection Institute Ministry of Agriculture and Rural AffairsTianjin 300191China Institute of Resources and Environmental Engineering Shanxi UniversityTaiyuan 030006ShanxiChina Department of Soil Quality Wageningen UniversityWageningenThe Netherlands College of Marine and Environmental Science Tianjin University of Science and TechnologyTianjin 300457China College of Resource and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou 341000JiangxiChina College of Natural Resources and Environment South China Agricultural UniversityGuangzhou 510642China

Biochar nanoparticles(BCNPs)and iron mineral nanoparticles(IMNPs),such as ferrihydrite nanoparticles(FHNPs),magnetite nanoparticles(MTNPs),and goethite nanoparticles(GTNPs),are often combined and used in soil ***,the stability and interaction of nanoparticles under various environmental conditions have not been investigated *** this study,settling experiments,a semi-empirical model,the Derjaguin-Landau-Verwey-Overbeek(DLVO)theory,scanning electron microscopy(SEM)observations,and quantum chemical calculations were used to study the interaction and heteroaggregation of BCNPs and *** of BCNPs-FHNPs and BCNPs-GTNPs was stable at neutral and alkaline pH(relative concentration of unsettled nanoparticles C_(res’)=0.679-0.824),whereas fast settling of BCNPs-IMNPs was observed at acidic pH(C_(res’)=0.104-0.628).By contrast,BCNPs-MTNPs consistently showed moderate settling regardless of the mass of magnetite at all pH(C_(res’)=0.423-0.673).Both humic acid(HA,10 mg L^(−1))and ionic strength(IS,10 and 100 mM)facilitated the settling of BCNPs-FHNPs and BCNPs-MTNPs systems,whereas the settling of BCNPs-GTNPs was sensitive only to *** acid(10 mg L^(−1))had a general stabi-lizing effect on the BCNPs-IMNPs *** results of SEM and quantum chemical calculations suggested that the interaction between BCNPs and FHNPs(-2755.58 kJ mol^(−1))was stronger than that between BCNPs and GTNPs(−1706.23 kJ mol^(−1))or MTNPs(−1676.73 kJ mol^(−1)).The enhancement of heteroaggregation between BCNPs and IMNPs under unfavorable conditions(acidic pH,HA,and IS)was regulated by the strength of the ***,the enhancement of heteroaggregation of BCNPs-FHNPs was greater than that of *** the BCNPs-GTNPs system,the high concentration and elongated structure of GTNPs may contribute greatly to heteroag-gregation and settling with small *** results highlight the influence of pH,IS,and HA on the interaction between BCNPs and I

关键词： Biochar iron mineral nanoparticles Stability DLVO Quantum chemistry

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：