Biosorption of toxic metals: The potential use of maize tassel for the removal of Pb (II) from aqueous solutions

Caliphs M. Zvinowanda; Jonathan O. Okonkwo; Victoria Mpangela; Josephine Phaleng; Pride N. Shabalala; Teresa Dennis; Patricia Forbes; Nana M. Agyei; Kenneth I. Ozoemena

Biosorption of toxic metals: The potential use of maize tassel for the removal of Pb (II) from aqueous solutions

Caliphs M. Zvinowanda
, Jonathan O. Okonkwo
, Victoria Mpangela
, Josephine Phaleng
, Pride N. Shabalala
, Teresa Dennis
, Patricia Forbes
, Nana M. Agyei
, Kenneth I. Ozoemena

Tshwane University of Technology
Council for Scientific and Industrial Research
Sefako Makgatho Health Sciences University
University of Pretoria

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

8 Citations (Scopus)

Abstract

In this study, we show for the first time the removal of Pb(II) from aqueous solutions by tassel powder. Batch experiments were conducted on tassel powder, and the effects of contact time, pH, temperature and concentration on the extent of Pb(II) removal studied. The highest adsorption (about 80 %) was at pH 7, and equilibrium was established between contact times 4-24 h. Adsorption of 5 mg/L Pb(II) standard concentration was rapid suggesting that adsorption may have been controlled by external diffusion. When increasing the concentration from 10-20 mg/L, the controlling step of adsorption was suggested to be that of internal diffusion.

Original language	English
Pages (from-to)	814-818
Number of pages	5
Journal	Fresenius Environmental Bulletin
Volume	17
Issue number	7 A
Publication status	Published - 2008
Externally published	Yes

Keywords

Batch adsorption procedure
Contact time
Diffusion
Influence of pH

ASJC Scopus subject areas

Environmental Chemistry
Waste Management and Disposal
Pollution

Cite this

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title = "Biosorption of toxic metals: The potential use of maize tassel for the removal of Pb (II) from aqueous solutions",

abstract = "In this study, we show for the first time the removal of Pb(II) from aqueous solutions by tassel powder. Batch experiments were conducted on tassel powder, and the effects of contact time, pH, temperature and concentration on the extent of Pb(II) removal studied. The highest adsorption (about 80 \%) was at pH 7, and equilibrium was established between contact times 4-24 h. Adsorption of 5 mg/L Pb(II) standard concentration was rapid suggesting that adsorption may have been controlled by external diffusion. When increasing the concentration from 10-20 mg/L, the controlling step of adsorption was suggested to be that of internal diffusion.",

keywords = "Batch adsorption procedure, Contact time, Diffusion, Influence of pH",

author = "Zvinowanda, \{Caliphs M.\} and Okonkwo, \{Jonathan O.\} and Victoria Mpangela and Josephine Phaleng and Shabalala, \{Pride N.\} and Teresa Dennis and Patricia Forbes and Agyei, \{Nana M.\} and Ozoemena, \{Kenneth I.\}",

year = "2008",

language = "English",

volume = "17",

pages = "814--818",

journal = "Fresenius Environmental Bulletin",

issn = "1018-4619",

publisher = "Parlar Scientific Publications",

number = "7 A",

}

TY - JOUR

T1 - Biosorption of toxic metals

T2 - The potential use of maize tassel for the removal of Pb (II) from aqueous solutions

AU - Zvinowanda, Caliphs M.

AU - Okonkwo, Jonathan O.

AU - Mpangela, Victoria

AU - Phaleng, Josephine

AU - Shabalala, Pride N.

AU - Dennis, Teresa

AU - Forbes, Patricia

AU - Agyei, Nana M.

AU - Ozoemena, Kenneth I.

PY - 2008

Y1 - 2008

N2 - In this study, we show for the first time the removal of Pb(II) from aqueous solutions by tassel powder. Batch experiments were conducted on tassel powder, and the effects of contact time, pH, temperature and concentration on the extent of Pb(II) removal studied. The highest adsorption (about 80 %) was at pH 7, and equilibrium was established between contact times 4-24 h. Adsorption of 5 mg/L Pb(II) standard concentration was rapid suggesting that adsorption may have been controlled by external diffusion. When increasing the concentration from 10-20 mg/L, the controlling step of adsorption was suggested to be that of internal diffusion.

AB - In this study, we show for the first time the removal of Pb(II) from aqueous solutions by tassel powder. Batch experiments were conducted on tassel powder, and the effects of contact time, pH, temperature and concentration on the extent of Pb(II) removal studied. The highest adsorption (about 80 %) was at pH 7, and equilibrium was established between contact times 4-24 h. Adsorption of 5 mg/L Pb(II) standard concentration was rapid suggesting that adsorption may have been controlled by external diffusion. When increasing the concentration from 10-20 mg/L, the controlling step of adsorption was suggested to be that of internal diffusion.

KW - Batch adsorption procedure

KW - Contact time

KW - Diffusion

KW - Influence of pH

UR - https://www.scopus.com/pages/publications/49449118579

M3 - Article

AN - SCOPUS:49449118579

SN - 1018-4619

VL - 17

SP - 814

EP - 818

JO - Fresenius Environmental Bulletin

JF - Fresenius Environmental Bulletin

IS - 7 A

ER -

Biosorption of toxic metals: The potential use of maize tassel for the removal of Pb (II) from aqueous solutions

Abstract

Keywords

ASJC Scopus subject areas

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