Surface and structure characteristics of commercial K-Feldspar powders: Effects of temperature and leaching media

Hamed Salimkhani; Tohid Joodi; Aidin Bordbar-Khiabani; Ali Motei Dizaji; Behnam Abdolalipour; Ali Azizi

doi:10.1016/j.cjche.2018.11.016

Surface and structure characteristics of commercial K-Feldspar powders: Effects of temperature and leaching media

Hamed Salimkhani^*
, Tohid Joodi
, Aidin Bordbar-Khiabani
, Ali Motei Dizaji
, Behnam Abdolalipour
, Ali Azizi

^*Corresponding author for this work

Not published at VTT

Research output: Contribution to journal › Article › Scientific › peer-review

29 Citations (Scopus)

Abstract

This study presents morphological and structural variations of K-Feldspar mineral after acid treatment. Both organic and inorganic acids such as C₂H₂O₄, HCl, HNO₃ and H₂SO₄ were employed for this purpose. Another aim of this study was to find an optimum experimental condition for iron (Fe) removal with a minimum damage on the structure of K-Feldspar in which high whiteness index is obtained. The effect of different parameters such as concentration, pH and temperature on the final structure of this mineral was investigated. To find out the chemical composition of powder, XRF was utilized. FTIR, XRD and SEM were employed to study the structure of mineral. Spectrophotometry was chosen to analyze whiteness index of powder after acid treatment. It was found that O–Al–O bond at 647 cm⁻¹ for H₂SO₄ and HNO₃ treated sample disappeared. However, HCl and C₂H₂O₄ were ineffective at this band. In addition, the results revealed an increase in K-Feldspar content, a decrease in Fe content, an increase in whiteness index and no significant structural change for C₂H₂O₄ leached sample. Whiteness index of 91% was obtained for C₂H₂O₄ leached sample with the pH of 2.5 to 3 at temperature of 50 °C and during 1 h.

Original language	English
Pages (from-to)	307-317
Number of pages	11
Journal	Chinese Journal of Chemical Engineering
Volume	28
Issue number	1
DOIs	https://doi.org/10.1016/j.cjche.2018.11.016
Publication status	Published - Jan 2020
MoE publication type	A1 Journal article-refereed

Funding

This project was fulfilled at International University of Tabriz in Laboratory of Ceramics Research Center. The authors gratefully acknowledge the assistance of Ms. Sara Bahrampour for SEM analysis.

Keywords

FTIR
Iron oxide
K-Feldspar
Organic and inorganic acids

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.cjche.2018.11.016

Cite this

@article{96a95c052482424aa61de0121d79757f,

title = "Surface and structure characteristics of commercial K-Feldspar powders: Effects of temperature and leaching media",

abstract = "This study presents morphological and structural variations of K-Feldspar mineral after acid treatment. Both organic and inorganic acids such as C2H2O4, HCl, HNO3 and H2SO4 were employed for this purpose. Another aim of this study was to find an optimum experimental condition for iron (Fe) removal with a minimum damage on the structure of K-Feldspar in which high whiteness index is obtained. The effect of different parameters such as concentration, pH and temperature on the final structure of this mineral was investigated. To find out the chemical composition of powder, XRF was utilized. FTIR, XRD and SEM were employed to study the structure of mineral. Spectrophotometry was chosen to analyze whiteness index of powder after acid treatment. It was found that O–Al–O bond at 647 cm−1 for H2SO4 and HNO3 treated sample disappeared. However, HCl and C2H2O4 were ineffective at this band. In addition, the results revealed an increase in K-Feldspar content, a decrease in Fe content, an increase in whiteness index and no significant structural change for C2H2O4 leached sample. Whiteness index of 91\% was obtained for C2H2O4 leached sample with the pH of 2.5 to 3 at temperature of 50 °C and during 1 h.",

keywords = "FTIR, Iron oxide, K-Feldspar, Organic and inorganic acids",

author = "Hamed Salimkhani and Tohid Joodi and Aidin Bordbar-Khiabani and \{Motei Dizaji\}, Ali and Behnam Abdolalipour and Ali Azizi",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2020",

month = jan,

doi = "10.1016/j.cjche.2018.11.016",

language = "English",

volume = "28",

pages = "307--317",

journal = "Chinese Journal of Chemical Engineering",

issn = "1004-9541",

publisher = "Materials China",

number = "1",

}

TY - JOUR

T1 - Surface and structure characteristics of commercial K-Feldspar powders

T2 - Effects of temperature and leaching media

AU - Salimkhani, Hamed

AU - Joodi, Tohid

AU - Bordbar-Khiabani, Aidin

AU - Motei Dizaji, Ali

AU - Abdolalipour, Behnam

AU - Azizi, Ali

PY - 2020/1

Y1 - 2020/1

N2 - This study presents morphological and structural variations of K-Feldspar mineral after acid treatment. Both organic and inorganic acids such as C2H2O4, HCl, HNO3 and H2SO4 were employed for this purpose. Another aim of this study was to find an optimum experimental condition for iron (Fe) removal with a minimum damage on the structure of K-Feldspar in which high whiteness index is obtained. The effect of different parameters such as concentration, pH and temperature on the final structure of this mineral was investigated. To find out the chemical composition of powder, XRF was utilized. FTIR, XRD and SEM were employed to study the structure of mineral. Spectrophotometry was chosen to analyze whiteness index of powder after acid treatment. It was found that O–Al–O bond at 647 cm−1 for H2SO4 and HNO3 treated sample disappeared. However, HCl and C2H2O4 were ineffective at this band. In addition, the results revealed an increase in K-Feldspar content, a decrease in Fe content, an increase in whiteness index and no significant structural change for C2H2O4 leached sample. Whiteness index of 91% was obtained for C2H2O4 leached sample with the pH of 2.5 to 3 at temperature of 50 °C and during 1 h.

AB - This study presents morphological and structural variations of K-Feldspar mineral after acid treatment. Both organic and inorganic acids such as C2H2O4, HCl, HNO3 and H2SO4 were employed for this purpose. Another aim of this study was to find an optimum experimental condition for iron (Fe) removal with a minimum damage on the structure of K-Feldspar in which high whiteness index is obtained. The effect of different parameters such as concentration, pH and temperature on the final structure of this mineral was investigated. To find out the chemical composition of powder, XRF was utilized. FTIR, XRD and SEM were employed to study the structure of mineral. Spectrophotometry was chosen to analyze whiteness index of powder after acid treatment. It was found that O–Al–O bond at 647 cm−1 for H2SO4 and HNO3 treated sample disappeared. However, HCl and C2H2O4 were ineffective at this band. In addition, the results revealed an increase in K-Feldspar content, a decrease in Fe content, an increase in whiteness index and no significant structural change for C2H2O4 leached sample. Whiteness index of 91% was obtained for C2H2O4 leached sample with the pH of 2.5 to 3 at temperature of 50 °C and during 1 h.

KW - FTIR

KW - Iron oxide

KW - K-Feldspar

KW - Organic and inorganic acids

UR - https://www.scopus.com/pages/publications/85063365521

U2 - 10.1016/j.cjche.2018.11.016

DO - 10.1016/j.cjche.2018.11.016

M3 - Article

AN - SCOPUS:85063365521

SN - 1004-9541

VL - 28

SP - 307

EP - 317

JO - Chinese Journal of Chemical Engineering

JF - Chinese Journal of Chemical Engineering

IS - 1

ER -

Surface and structure characteristics of commercial K-Feldspar powders: Effects of temperature and leaching media

Abstract

Funding

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this