IHB OpenIR  > 期刊论文
Dissolution of kaolinite induced by citric, oxalic, and malic acids
Wang, XX; Li, QM; Hu, HF; Zhang, TL; Zhou, YY; Wang, XX, Chinese Acad Sci, Inst Soil Sci, POB X 821,71 E Beijing Rd, Nanjing 210008, Peoples R China
2005-10-15
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN0021-9797
Volume290Issue:2Pages:481-488
AbstractKaolinite is a dominant clay mineral in the soils in tropical and Subtropical regions, and its dissolution has an influence on a variety of soil properties. In this work, kaolinite dissolution induced by three kinds of low-molecular-weight organic acid, i.e., citric, oxalic, and malic acids, was evaluated under far-from-equilibrium conditions. The rates of kaolinite dissolution depended on the kind and concentration of organic acids, with the sequence R-oxalate > R-citrate > R-malate. Chemical calculation showed the change in concentration of organic ligand relative to change in concentration of organic acid in suspensions of kaolinite and organic acid. The effect of organic acid on kaolinite dissolution was modeled by species of organic anionic ligand. For oxalic acid, L-oxalic(2-) and HLoxalic- jointly enhanced the dissolution of kaolinite, but for malic and citric acids, HLmalic- and H2Lcitric- made a higher contribution to the total dissolution rate of kaolinite than L-malic(2-) and L-citric(3-), respectively. For oxalic acid, the proposed model was R-Si = 1.89 x 10(-12) x [(25x)/(1+25x)] + 1.93 x 10(-12) x [(1990x(1))/(1+1990x(1))] (R-2 = 0.9763), where x and x(1) denote the concentrations of HLoxalic and L-oxalic, respectively, and x(1) = 10(-3.81) x x/[H+]. For malic acid, the model was R-Si =4.79 x 10(-12) x [(328-v)/(1+328x)] + 1.67 x 10(-13) x [(1149x(1))/(1+1149x(1))] (R-2 =0.9452), where x and x(1) denote the concentrations of HLmalic and L-malic, respectively, and x(1) = 10(-5.11) x x/[H+], and for citric acid, the model was R-Si = 4.73 x 10(-12) x [(845x)/(1+845x)] +4.68 x 10(-12) x [(2855x(1))/(1+2855x(1))] (R-2 =0.9682), where x and x(1) denote the concentrations of H2Lcitric and L-citric, respectively, and x(1) = 10(-11.16) x x/[H+](2). (c) 2005 Elsevier Inc. All rights reserved.; Kaolinite is a dominant clay mineral in the soils in tropical and Subtropical regions, and its dissolution has an influence on a variety of soil properties. In this work, kaolinite dissolution induced by three kinds of low-molecular-weight organic acid, i.e., citric, oxalic, and malic acids, was evaluated under far-from-equilibrium conditions. The rates of kaolinite dissolution depended on the kind and concentration of organic acids, with the sequence R-oxalate > R-citrate > R-malate. Chemical calculation showed the change in concentration of organic ligand relative to change in concentration of organic acid in suspensions of kaolinite and organic acid. The effect of organic acid on kaolinite dissolution was modeled by species of organic anionic ligand. For oxalic acid, L-oxalic(2-) and HLoxalic- jointly enhanced the dissolution of kaolinite, but for malic and citric acids, HLmalic- and H2Lcitric- made a higher contribution to the total dissolution rate of kaolinite than L-malic(2-) and L-citric(3-), respectively. For oxalic acid, the proposed model was R-Si = 1.89 x 10(-12) x [(25x)/(1+25x)] + 1.93 x 10(-12) x [(1990x(1))/(1+1990x(1))] (R-2 = 0.9763), where x and x(1) denote the concentrations of HLoxalic and L-oxalic, respectively, and x(1) = 10(-3.81) x x/[H+]. For malic acid, the model was R-Si =4.79 x 10(-12) x [(328-v)/(1+328x)] + 1.67 x 10(-13) x [(1149x(1))/(1+1149x(1))] (R-2 =0.9452), where x and x(1) denote the concentrations of HLmalic and L-malic, respectively, and x(1) = 10(-5.11) x x/[H+], and for citric acid, the model was R-Si = 4.73 x 10(-12) x [(845x)/(1+845x)] +4.68 x 10(-12) x [(2855x(1))/(1+2855x(1))] (R-2 =0.9682), where x and x(1) denote the concentrations of H2Lcitric and L-citric, respectively, and x(1) = 10(-11.16) x x/[H+](2). (c) 2005 Elsevier Inc. All rights reserved.
SubtypeArticle
KeywordKaolinite Dissolution Kinetics Citric Acid Oxalic Acid Malic Acid
DepartmentChinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; Zhengzhou Coll Anim Husb Engn, Zhengzhou 450011, Peoples R China
Subject AreaChemistry, Physical
DOI10.1016/j.jcis.2005.04.066
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000232012200024
WOS KeywordORGANIC-ACIDS ; FELDSPAR DISSOLUTION ; ALUMINUM TOXICITY ; AQUEOUS-SOLUTIONS ; PH-DEPENDENCE ; KINETICS ; RATES ; COMPLEXATION ; TEMPERATURE ; CHEMISTRY
Citation statistics
Cited Times:36[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/9140
Collection期刊论文
Corresponding AuthorWang, XX, Chinese Acad Sci, Inst Soil Sci, POB X 821,71 E Beijing Rd, Nanjing 210008, Peoples R China
Affiliation1.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
3.Zhengzhou Coll Anim Husb Engn, Zhengzhou 450011, Peoples R China
Recommended Citation
GB/T 7714
Wang, XX,Li, QM,Hu, HF,et al. Dissolution of kaolinite induced by citric, oxalic, and malic acids[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2005,290(2):481-488.
APA Wang, XX,Li, QM,Hu, HF,Zhang, TL,Zhou, YY,&Wang, XX, Chinese Acad Sci, Inst Soil Sci, POB X 821,71 E Beijing Rd, Nanjing 210008, Peoples R China.(2005).Dissolution of kaolinite induced by citric, oxalic, and malic acids.JOURNAL OF COLLOID AND INTERFACE SCIENCE,290(2),481-488.
MLA Wang, XX,et al."Dissolution of kaolinite induced by citric, oxalic, and malic acids".JOURNAL OF COLLOID AND INTERFACE SCIENCE 290.2(2005):481-488.
Files in This Item:
File Name/Size DocType Version Access License
Dissolution of kaoli(384KB) 开放获取--View Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang, XX]'s Articles
[Li, QM]'s Articles
[Hu, HF]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, XX]'s Articles
[Li, QM]'s Articles
[Hu, HF]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, XX]'s Articles
[Li, QM]'s Articles
[Hu, HF]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Dissolution of kaolinite induced by citric, oxalic, and malic acids.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.