Beneficial utilization of rice husk ash (RHA) as a new sorbent for removal of antimony (III) from water

Kejia Zhang, Tuqiao Zhang, Yang Deng, Lei Li, Yiping Zhang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This study represents the first scientific effort to evaluate the technical feasibility of rice husk ashes (RHA; ash burned after RH) as a new water treatment material for adsorption of Sb(III) from drinking water. Three RHA samples (RHA300, RHA450, RHA600) were prepared from RH at 300, 450 and 600 °C, respectively. Compared with RH, RHA had great specific surface areas, small particle sizes, and large total pore volumes. Moreover, the RHA was characterized by an amorphous structure. In the subsequent bench-scale tests, the RHA samples were utilized to adsorb Sb(III) from water. Kinetics tests showed that pseudo firstorder and pseudo second-order kinetics models both well fit the experimental data, and Sb(III) sorption rates followed the order of RHA450 > RHA600> RHA300 > RH. Among the 4 tested adsorption isotherm models (Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich), the Langmuir isotherm was the best one to fit the measured data, and the adsorption capacities of RHA300, RHA450 and RHA600 were 1.407, 3.842 and 2.731 mg/g, respectively. Solution pH, natural organic matters (NOMs) and certain cations (e.g. Fe3+ and Fe2+) were significant factors controlling the adsorption process. RHA300 adsorption was increased with increasing pH from 2 to 12, while RHA450 and RHA600 showed a high adsorption potential at pHs 4-10. Their maximum adsorption capacities were observed at pH values where the lowest zeta potentials were found. Fe3+ and Fe2+ both greatly inhibited RHA adsorption of Sb(III). In contrast, K+, Na+, Mn2+ and Cu2+, as well as humic acid (HA) (the major NOM fraction), had a minor impact upon the adsorption. Our results demonstrate that RHA is a technically effective sorbent to address the Sb(III) pollution in water.

Original languageEnglish
Pages (from-to)714-721
Number of pages8
JournalFresenius Environmental Bulletin
Volume22
Issue number3
StatePublished - 16 Apr 2013

Fingerprint

Ashes
Antimony
antimony
Sorbents
ash
rice
adsorption
Water
Adsorption
water
Biological materials
isotherm
Humic Substances
removal
organic matter
kinetics
Kinetics
Zeta potential
Water treatment
Adsorption isotherms

Keywords

  • Adsorption
  • Antimony(III)
  • Rice husk ash
  • Thermal treatment

Cite this

Zhang, Kejia ; Zhang, Tuqiao ; Deng, Yang ; Li, Lei ; Zhang, Yiping. / Beneficial utilization of rice husk ash (RHA) as a new sorbent for removal of antimony (III) from water. In: Fresenius Environmental Bulletin. 2013 ; Vol. 22, No. 3. pp. 714-721.
@article{440b826ff77848e1b4a3106e5a0b3a79,
title = "Beneficial utilization of rice husk ash (RHA) as a new sorbent for removal of antimony (III) from water",
abstract = "This study represents the first scientific effort to evaluate the technical feasibility of rice husk ashes (RHA; ash burned after RH) as a new water treatment material for adsorption of Sb(III) from drinking water. Three RHA samples (RHA300, RHA450, RHA600) were prepared from RH at 300, 450 and 600 °C, respectively. Compared with RH, RHA had great specific surface areas, small particle sizes, and large total pore volumes. Moreover, the RHA was characterized by an amorphous structure. In the subsequent bench-scale tests, the RHA samples were utilized to adsorb Sb(III) from water. Kinetics tests showed that pseudo firstorder and pseudo second-order kinetics models both well fit the experimental data, and Sb(III) sorption rates followed the order of RHA450 > RHA600> RHA300 > RH. Among the 4 tested adsorption isotherm models (Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich), the Langmuir isotherm was the best one to fit the measured data, and the adsorption capacities of RHA300, RHA450 and RHA600 were 1.407, 3.842 and 2.731 mg/g, respectively. Solution pH, natural organic matters (NOMs) and certain cations (e.g. Fe3+ and Fe2+) were significant factors controlling the adsorption process. RHA300 adsorption was increased with increasing pH from 2 to 12, while RHA450 and RHA600 showed a high adsorption potential at pHs 4-10. Their maximum adsorption capacities were observed at pH values where the lowest zeta potentials were found. Fe3+ and Fe2+ both greatly inhibited RHA adsorption of Sb(III). In contrast, K+, Na+, Mn2+ and Cu2+, as well as humic acid (HA) (the major NOM fraction), had a minor impact upon the adsorption. Our results demonstrate that RHA is a technically effective sorbent to address the Sb(III) pollution in water.",
keywords = "Adsorption, Antimony(III), Rice husk ash, Thermal treatment",
author = "Kejia Zhang and Tuqiao Zhang and Yang Deng and Lei Li and Yiping Zhang",
year = "2013",
month = "4",
day = "16",
language = "English",
volume = "22",
pages = "714--721",
journal = "Fresenius Environmental Bulletin",
issn = "1018-4619",
publisher = "Parlar Scientific Publications",
number = "3",

}

Beneficial utilization of rice husk ash (RHA) as a new sorbent for removal of antimony (III) from water. / Zhang, Kejia; Zhang, Tuqiao; Deng, Yang; Li, Lei; Zhang, Yiping.

In: Fresenius Environmental Bulletin, Vol. 22, No. 3, 16.04.2013, p. 714-721.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Beneficial utilization of rice husk ash (RHA) as a new sorbent for removal of antimony (III) from water

AU - Zhang, Kejia

AU - Zhang, Tuqiao

AU - Deng, Yang

AU - Li, Lei

AU - Zhang, Yiping

PY - 2013/4/16

Y1 - 2013/4/16

N2 - This study represents the first scientific effort to evaluate the technical feasibility of rice husk ashes (RHA; ash burned after RH) as a new water treatment material for adsorption of Sb(III) from drinking water. Three RHA samples (RHA300, RHA450, RHA600) were prepared from RH at 300, 450 and 600 °C, respectively. Compared with RH, RHA had great specific surface areas, small particle sizes, and large total pore volumes. Moreover, the RHA was characterized by an amorphous structure. In the subsequent bench-scale tests, the RHA samples were utilized to adsorb Sb(III) from water. Kinetics tests showed that pseudo firstorder and pseudo second-order kinetics models both well fit the experimental data, and Sb(III) sorption rates followed the order of RHA450 > RHA600> RHA300 > RH. Among the 4 tested adsorption isotherm models (Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich), the Langmuir isotherm was the best one to fit the measured data, and the adsorption capacities of RHA300, RHA450 and RHA600 were 1.407, 3.842 and 2.731 mg/g, respectively. Solution pH, natural organic matters (NOMs) and certain cations (e.g. Fe3+ and Fe2+) were significant factors controlling the adsorption process. RHA300 adsorption was increased with increasing pH from 2 to 12, while RHA450 and RHA600 showed a high adsorption potential at pHs 4-10. Their maximum adsorption capacities were observed at pH values where the lowest zeta potentials were found. Fe3+ and Fe2+ both greatly inhibited RHA adsorption of Sb(III). In contrast, K+, Na+, Mn2+ and Cu2+, as well as humic acid (HA) (the major NOM fraction), had a minor impact upon the adsorption. Our results demonstrate that RHA is a technically effective sorbent to address the Sb(III) pollution in water.

AB - This study represents the first scientific effort to evaluate the technical feasibility of rice husk ashes (RHA; ash burned after RH) as a new water treatment material for adsorption of Sb(III) from drinking water. Three RHA samples (RHA300, RHA450, RHA600) were prepared from RH at 300, 450 and 600 °C, respectively. Compared with RH, RHA had great specific surface areas, small particle sizes, and large total pore volumes. Moreover, the RHA was characterized by an amorphous structure. In the subsequent bench-scale tests, the RHA samples were utilized to adsorb Sb(III) from water. Kinetics tests showed that pseudo firstorder and pseudo second-order kinetics models both well fit the experimental data, and Sb(III) sorption rates followed the order of RHA450 > RHA600> RHA300 > RH. Among the 4 tested adsorption isotherm models (Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich), the Langmuir isotherm was the best one to fit the measured data, and the adsorption capacities of RHA300, RHA450 and RHA600 were 1.407, 3.842 and 2.731 mg/g, respectively. Solution pH, natural organic matters (NOMs) and certain cations (e.g. Fe3+ and Fe2+) were significant factors controlling the adsorption process. RHA300 adsorption was increased with increasing pH from 2 to 12, while RHA450 and RHA600 showed a high adsorption potential at pHs 4-10. Their maximum adsorption capacities were observed at pH values where the lowest zeta potentials were found. Fe3+ and Fe2+ both greatly inhibited RHA adsorption of Sb(III). In contrast, K+, Na+, Mn2+ and Cu2+, as well as humic acid (HA) (the major NOM fraction), had a minor impact upon the adsorption. Our results demonstrate that RHA is a technically effective sorbent to address the Sb(III) pollution in water.

KW - Adsorption

KW - Antimony(III)

KW - Rice husk ash

KW - Thermal treatment

UR - http://www.scopus.com/inward/record.url?scp=84876015819&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:84876015819

VL - 22

SP - 714

EP - 721

JO - Fresenius Environmental Bulletin

JF - Fresenius Environmental Bulletin

SN - 1018-4619

IS - 3

ER -