Coverart for item
The Resource Bentonite Functionalised with 2-(3-(2-aminoethylthio)propylthio)ethanamine (AEPE) for the Removal of Hg(II) from Wastewaters : Synthesis, Characterisation and Hg(II) Adsorption Properties

Bentonite Functionalised with 2-(3-(2-aminoethylthio)propylthio)ethanamine (AEPE) for the Removal of Hg(II) from Wastewaters : Synthesis, Characterisation and Hg(II) Adsorption Properties

Label
Bentonite Functionalised with 2-(3-(2-aminoethylthio)propylthio)ethanamine (AEPE) for the Removal of Hg(II) from Wastewaters : Synthesis, Characterisation and Hg(II) Adsorption Properties
Title
Bentonite Functionalised with 2-(3-(2-aminoethylthio)propylthio)ethanamine (AEPE) for the Removal of Hg(II) from Wastewaters
Title remainder
Synthesis, Characterisation and Hg(II) Adsorption Properties
Creator
Contributor
Subject
Genre
Language
eng
Summary
  • In this study, natural bentonite clay was first purified and then functionalised with the chelating ligand 2-(3-(2-aminoethylthio)propylthio)ethanamine (AEPE) to improve the adsorption capacity and selectivity towards Hg(II) ions. The surface modification was characterised with the help of powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), BET isotherm to determine the specific surface area while the thermal stability of the samples was studied using thermogravimetric analysis (TGA). FT-IR and TGA demonstrated the presence of the chelating ligand on the modified clay. XRD pattern indicated that the chelating agent AEPE was only grafted onto the surface of the purified bentonite, whereas the interlayer distance did not change. N2 specific surface area measurement also indicated the coverage of AEPE onto the surface of purified bentonite.Adsorption of Hg(II) ions from aqueous solutions as a function of pH, contact time, initial concentration, ionic strength, interfering ions and adsorbent dose was studied. The adsorption process followed a pseudo-second order kinetics and monolayer adsorption. The adsorption of Hg(II) ions increased with increasing pH and reached a plateau value in the pH range of 4.0-8.0. The removal of Hg(II) was found to be higher than 99% at an initial concentration of 20 mg/L using adsorbent dose of 0.01 g. The presence of NaNO3 as background electrolytes at concentration ranging from 0.01 to 2.0 M decreased the adsorption of Hg(II) ions. Furthermore, the adsorption capacity increased with increasing adsorbent dose. Sorption data analysis was carried out using Langmuir isotherm for the uptake of Hg(II) ions at a concentration range of 20-400 mg/L. The adsorption process was found to be favourable as the separation parameter is less than unity (RL<1). The maximal adsorption capacity was found to be
  • 48.69 mg/g obtained from Langmuir equation
Cataloging source
MiAaPQ
LC call number
QE471.15.B4 -- S54 2008eb
Literary form
non fiction
Nature of contents
dictionaries
Label
Bentonite Functionalised with 2-(3-(2-aminoethylthio)propylthio)ethanamine (AEPE) for the Removal of Hg(II) from Wastewaters : Synthesis, Characterisation and Hg(II) Adsorption Properties
Link
http://ebookcentral.proquest.com/lib/multco/detail.action?docID=594957
Instantiates
Publication
Copyright
Carrier category
online resource
Carrier category code
cr
Carrier MARC source
rdacarrier
Color
multicolored
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Contents
Bentonite Functionalised with 2-(3-(2-aminoethylthio)propylthio)ethanamine (AEPE) for the Removal of Hg(II) from Wastewaters -- Content -- Abbreviations -- Physical characteristics -- Index of figures -- Index of tables -- Index of schemes -- Index of equations -- Abstract -- 1 Introduction -- 1.1 General information -- 1.1.1 Mercury and resulting environmental problems -- 1.1.2 The removal of mercury by adsorption using clay minerals -- 1.2 Theoretical Background -- 1.2.1 Structure and properties of bentonite -- 1.2.2 Chelating agents -- 1.2.3 Characterisation techniques -- 2 Aims -- 3 Experimental -- 3.1 Material -- 3.1.1 Reagents and chemicals -- 3.2 Methods -- 3.2.1 Synthesis -- 3.2.2 Characterisation -- 3.2.3 Adsorption of Hg(II) from aqueous solution -- 4 Results and Discussion -- 4.1 Characterisation -- 4.1.1 1H and 13C NMR spectra of AEPE -- 4.1.2 XRD pattern -- 4.1.3 FT-IR spectra -- 4.1.4 TGA -- 4.1.5 BET -- 4.2 Adsorption of Hg(II) from aqueous solution -- 4.2.1 Effect of pH -- 4.2.2 Effect of contact time -- 4.2.3 Adsorption isotherm -- 4.2.4 Effect of ionic strength -- 4.2.5 Interfering ions -- 4.2.6 Effect of adsorbent dose and kinetics -- 5 Conclusion and Outlook -- 6 References -- 7 Appendix
Control code
EBC594957
Dimensions
unknown
Edition
1st ed.
Extent
1 online resource (73 pages)
Form of item
online
Isbn
9783836618472
Media category
computer
Media MARC source
rdamedia
Media type code
c
Note
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2017. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.
Sound
unknown sound
Specific material designation
remote
System control number
  • (MiAaPQ)EBC594957
  • (Au-PeEL)EBL594957
  • (CaPaEBR)ebr10487439
  • (OCoLC)679420976
Label
Bentonite Functionalised with 2-(3-(2-aminoethylthio)propylthio)ethanamine (AEPE) for the Removal of Hg(II) from Wastewaters : Synthesis, Characterisation and Hg(II) Adsorption Properties
Link
http://ebookcentral.proquest.com/lib/multco/detail.action?docID=594957
Publication
Copyright
Carrier category
online resource
Carrier category code
cr
Carrier MARC source
rdacarrier
Color
multicolored
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Contents
Bentonite Functionalised with 2-(3-(2-aminoethylthio)propylthio)ethanamine (AEPE) for the Removal of Hg(II) from Wastewaters -- Content -- Abbreviations -- Physical characteristics -- Index of figures -- Index of tables -- Index of schemes -- Index of equations -- Abstract -- 1 Introduction -- 1.1 General information -- 1.1.1 Mercury and resulting environmental problems -- 1.1.2 The removal of mercury by adsorption using clay minerals -- 1.2 Theoretical Background -- 1.2.1 Structure and properties of bentonite -- 1.2.2 Chelating agents -- 1.2.3 Characterisation techniques -- 2 Aims -- 3 Experimental -- 3.1 Material -- 3.1.1 Reagents and chemicals -- 3.2 Methods -- 3.2.1 Synthesis -- 3.2.2 Characterisation -- 3.2.3 Adsorption of Hg(II) from aqueous solution -- 4 Results and Discussion -- 4.1 Characterisation -- 4.1.1 1H and 13C NMR spectra of AEPE -- 4.1.2 XRD pattern -- 4.1.3 FT-IR spectra -- 4.1.4 TGA -- 4.1.5 BET -- 4.2 Adsorption of Hg(II) from aqueous solution -- 4.2.1 Effect of pH -- 4.2.2 Effect of contact time -- 4.2.3 Adsorption isotherm -- 4.2.4 Effect of ionic strength -- 4.2.5 Interfering ions -- 4.2.6 Effect of adsorbent dose and kinetics -- 5 Conclusion and Outlook -- 6 References -- 7 Appendix
Control code
EBC594957
Dimensions
unknown
Edition
1st ed.
Extent
1 online resource (73 pages)
Form of item
online
Isbn
9783836618472
Media category
computer
Media MARC source
rdamedia
Media type code
c
Note
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2017. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.
Sound
unknown sound
Specific material designation
remote
System control number
  • (MiAaPQ)EBC594957
  • (Au-PeEL)EBL594957
  • (CaPaEBR)ebr10487439
  • (OCoLC)679420976

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