Removal of nickel from wastewater using an agricultural adsorbent

Krishnie Moodley, Ruella Singh, Evans T. Musapatika, Maurice S. Onyango, Aoyi Ochieng

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Chemical wastewater streams may contain toxic compounds which are non-biodegradable, and therefore require advanced treatment techniques such as adsorption. However, application of adsorption processes is often limited by the cost of adsorbents. In this study, the adsorption capacity of a low-cost adsorbent (pine sawdust) was investigated by treating wastewater containing nickel (II) and other heavy metal ions. Results were analysed using response surface methodology and a factorial design was employed to determine the interactive effects of the various factors on the adsorption capacity. Furthermore, Langmuir and Freundlich adsorption isotherms were fitted to experimental data to characterise the adsorption of the nickel ions by the pine sawdust. As a result, the highest adsorption capacity was attained at the combined effect of low adsorbent dose, high pH and high initial concentration. On the other hand, the Freundlich isotherm fitted the experimental data better than the Langmuir isotherm. Results of this study indicate that the use of pine sawdust could be a promising solution to the elimination of nickel ions from multi-component aqueous solutions.
Original languageEnglish
Pages (from-to)41-46
Number of pages6
JournalWater SA
Volume37
Issue number1
DOIs
Publication statusPublished - 2011

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Waste Water
Nickel
Adsorption
nickel
adsorption
wastewater
isotherm
ion
Ions
Heavy Ions
Costs and Cost Analysis
Poisons
Heavy Metals
removal
cost
aqueous solution
heavy metal
sawdust

Cite this

Moodley, Krishnie ; Singh, Ruella ; Musapatika, Evans T. ; Onyango, Maurice S. ; Ochieng, Aoyi. / Removal of nickel from wastewater using an agricultural adsorbent. In: Water SA. 2011 ; Vol. 37, No. 1. pp. 41-46.
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title = "Removal of nickel from wastewater using an agricultural adsorbent",
abstract = "Chemical wastewater streams may contain toxic compounds which are non-biodegradable, and therefore require advanced treatment techniques such as adsorption. However, application of adsorption processes is often limited by the cost of adsorbents. In this study, the adsorption capacity of a low-cost adsorbent (pine sawdust) was investigated by treating wastewater containing nickel (II) and other heavy metal ions. Results were analysed using response surface methodology and a factorial design was employed to determine the interactive effects of the various factors on the adsorption capacity. Furthermore, Langmuir and Freundlich adsorption isotherms were fitted to experimental data to characterise the adsorption of the nickel ions by the pine sawdust. As a result, the highest adsorption capacity was attained at the combined effect of low adsorbent dose, high pH and high initial concentration. On the other hand, the Freundlich isotherm fitted the experimental data better than the Langmuir isotherm. Results of this study indicate that the use of pine sawdust could be a promising solution to the elimination of nickel ions from multi-component aqueous solutions.",
author = "Krishnie Moodley and Ruella Singh and Musapatika, {Evans T.} and Onyango, {Maurice S.} and Aoyi Ochieng",
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Moodley, K, Singh, R, Musapatika, ET, Onyango, MS & Ochieng, A 2011, 'Removal of nickel from wastewater using an agricultural adsorbent', Water SA, vol. 37, no. 1, pp. 41-46. https://doi.org/10.4314/wsa.v37i1.64105

Removal of nickel from wastewater using an agricultural adsorbent. / Moodley, Krishnie; Singh, Ruella; Musapatika, Evans T.; Onyango, Maurice S.; Ochieng, Aoyi.

In: Water SA, Vol. 37, No. 1, 2011, p. 41-46.

Research output: Contribution to journalArticle

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T1 - Removal of nickel from wastewater using an agricultural adsorbent

AU - Moodley, Krishnie

AU - Singh, Ruella

AU - Musapatika, Evans T.

AU - Onyango, Maurice S.

AU - Ochieng, Aoyi

PY - 2011

Y1 - 2011

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AB - Chemical wastewater streams may contain toxic compounds which are non-biodegradable, and therefore require advanced treatment techniques such as adsorption. However, application of adsorption processes is often limited by the cost of adsorbents. In this study, the adsorption capacity of a low-cost adsorbent (pine sawdust) was investigated by treating wastewater containing nickel (II) and other heavy metal ions. Results were analysed using response surface methodology and a factorial design was employed to determine the interactive effects of the various factors on the adsorption capacity. Furthermore, Langmuir and Freundlich adsorption isotherms were fitted to experimental data to characterise the adsorption of the nickel ions by the pine sawdust. As a result, the highest adsorption capacity was attained at the combined effect of low adsorbent dose, high pH and high initial concentration. On the other hand, the Freundlich isotherm fitted the experimental data better than the Langmuir isotherm. Results of this study indicate that the use of pine sawdust could be a promising solution to the elimination of nickel ions from multi-component aqueous solutions.

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