Binary adsorption of [Pb(II) + Co(II)] from aqueous solution using thiolated saw dust

Technology advancement has contributed to an increase in industrial activities, resulting in the introduction of metal ions into water resources at concentrations well above the WHO limits. Heavy metals are highly toxic and carcinogenic; they usually occur as multicomponent mixtures in the aquatic e...

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Autor principal:	Neha Dhiman
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	competitive adsorption heavy metal ions langmuir competitive isotherm thermodynamic study thiolated saw dust Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/0e8b9e3c7967440a9f23afc56f9315d5
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spelling	oai:doaj.org-article:0e8b9e3c7967440a9f23afc56f9315d52021-11-23T18:41:08ZBinary adsorption of [Pb(II) + Co(II)] from aqueous solution using thiolated saw dust0273-12231996-973210.2166/wst.2021.454https://doaj.org/article/0e8b9e3c7967440a9f23afc56f9315d52021-11-01T00:00:00Zhttp://wst.iwaponline.com/content/84/9/2591https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Technology advancement has contributed to an increase in industrial activities, resulting in the introduction of metal ions into water resources at concentrations well above the WHO limits. Heavy metals are highly toxic and carcinogenic; they usually occur as multicomponent mixtures in the aquatic environment. In the present study, batch experiments have been conducted to study the dependence of varying concentration, time, pH and temperature on the uptake of Pb(II) as a pure component under equilibrium conditions using thiolated saw dust. Saw dust has been chemically modified with thioglycolic acid and characterised using proximate and FTIR analyses, the degree of thiolation has also been determined. To determine the effect of the presence of Co(II) ions on the uptake of Pb(II) ions, batch experiments for [Pb(II) + Co(II)] mixture have been carried out for concentration ratios of 1:0, 1:1, 1:2, 1:3, 1:4 of Pb:Co at pH 5 and data has been interpreted using Langmuir competitive isotherm, which shows that adsorption of Pb(II) has been suppressed by the presence of Co(II) ions in the binary solution, hence the adsorption process is antagonistic in nature. The study also indicates the possibility of simultaneous removal of both metal ions using low cost bioadsorbent, which is economical especially for application in small-scale industries. HIGHLIGHTS Thiolated saw dust shows excellent ability to adsorb Pb(II) and Co(II) ions.; Binary adsorption is based on electrostatic interaction controlled by the solution pH.; Thermodynamic adsorption behavior depends on adsorbent surface functional groups.; Affinity of each metal ion is depressed by the presence of the other in the binary solution.; Antagonistic effect on adsorption has been observed.;Neha DhimanIWA Publishingarticlecompetitive adsorptionheavy metal ionslangmuir competitive isothermthermodynamic studythiolated saw dustEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 9, Pp 2591-2600 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	competitive adsorption heavy metal ions langmuir competitive isotherm thermodynamic study thiolated saw dust Environmental technology. Sanitary engineering TD1-1066
spellingShingle	competitive adsorption heavy metal ions langmuir competitive isotherm thermodynamic study thiolated saw dust Environmental technology. Sanitary engineering TD1-1066 Neha Dhiman Binary adsorption of [Pb(II) + Co(II)] from aqueous solution using thiolated saw dust
description	Technology advancement has contributed to an increase in industrial activities, resulting in the introduction of metal ions into water resources at concentrations well above the WHO limits. Heavy metals are highly toxic and carcinogenic; they usually occur as multicomponent mixtures in the aquatic environment. In the present study, batch experiments have been conducted to study the dependence of varying concentration, time, pH and temperature on the uptake of Pb(II) as a pure component under equilibrium conditions using thiolated saw dust. Saw dust has been chemically modified with thioglycolic acid and characterised using proximate and FTIR analyses, the degree of thiolation has also been determined. To determine the effect of the presence of Co(II) ions on the uptake of Pb(II) ions, batch experiments for [Pb(II) + Co(II)] mixture have been carried out for concentration ratios of 1:0, 1:1, 1:2, 1:3, 1:4 of Pb:Co at pH 5 and data has been interpreted using Langmuir competitive isotherm, which shows that adsorption of Pb(II) has been suppressed by the presence of Co(II) ions in the binary solution, hence the adsorption process is antagonistic in nature. The study also indicates the possibility of simultaneous removal of both metal ions using low cost bioadsorbent, which is economical especially for application in small-scale industries. HIGHLIGHTS Thiolated saw dust shows excellent ability to adsorb Pb(II) and Co(II) ions.; Binary adsorption is based on electrostatic interaction controlled by the solution pH.; Thermodynamic adsorption behavior depends on adsorbent surface functional groups.; Affinity of each metal ion is depressed by the presence of the other in the binary solution.; Antagonistic effect on adsorption has been observed.;
format	article
author	Neha Dhiman
author_facet	Neha Dhiman
author_sort	Neha Dhiman
title	Binary adsorption of [Pb(II) + Co(II)] from aqueous solution using thiolated saw dust
title_short	Binary adsorption of [Pb(II) + Co(II)] from aqueous solution using thiolated saw dust
title_full	Binary adsorption of [Pb(II) + Co(II)] from aqueous solution using thiolated saw dust
title_fullStr	Binary adsorption of [Pb(II) + Co(II)] from aqueous solution using thiolated saw dust
title_full_unstemmed	Binary adsorption of [Pb(II) + Co(II)] from aqueous solution using thiolated saw dust
title_sort	binary adsorption of [pb(ii) + co(ii)] from aqueous solution using thiolated saw dust
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/0e8b9e3c7967440a9f23afc56f9315d5
work_keys_str_mv	AT nehadhiman binaryadsorptionofpbiicoiifromaqueoussolutionusingthiolatedsawdust
_version_	1718416136087797760

Binary adsorption of [Pb(II) + Co(II)] from aqueous solution using thiolated saw dust

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