Effective removal of Cu2+ ions from polluted water using new bio-adsorbents

Sorbents derived from stem powders of Feronia limonia (FLSP), Amorphophallus paeoniifolius (APSP) and Pumpkin (Cucurbitapepo) (PSP) plants are investigated for the removal of Cu2+ ions from polluted water by adopting batch methods of extraction. Extraction conditions are optimized for the effective...

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Autores principales:	B. Jagadeeswara Reddy, Sneha Latha Pala, Wondwosen Kebede Biftu, M. Suneetha, Kunta Ravindhranath
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	amorphophallus paeoniifolius applications cu2+ removal bio-sorbents feronia limonia pumpkin (cucurbitapepo) Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/2c14bbbb1d0241e2bfabfe9a9c7e4369
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spelling	oai:doaj.org-article:2c14bbbb1d0241e2bfabfe9a9c7e43692021-11-05T21:09:13ZEffective removal of Cu2+ ions from polluted water using new bio-adsorbents1751-231X10.2166/wpt.2021.019https://doaj.org/article/2c14bbbb1d0241e2bfabfe9a9c7e43692021-04-01T00:00:00Zhttp://wpt.iwaponline.com/content/16/2/566https://doaj.org/toc/1751-231XSorbents derived from stem powders of Feronia limonia (FLSP), Amorphophallus paeoniifolius (APSP) and Pumpkin (Cucurbitapepo) (PSP) plants are investigated for the removal of Cu2+ ions from polluted water by adopting batch methods of extraction. Extraction conditions are optimized for the effective removal of Cu2+ ions. High sorption capacities are observed: 175.5 mg/g for FLSP; 140.4 mg/g for APSP; 130.0 mg/g for PSP. Effective pH ranges are: 5 to 10 for FLSP; 6 to 10 for APSP and 7 to 10 for PSP. The three spent adsorbents can be regenerated and used. Thermodynamic parameters indicate that the adsorption process is spontaneous, endothermic and have positive change in entropy values. As ΔH values are more than 25.0 kJ/mole, the adsorption may be due to surface complex formation between Cu2+ ions and functional groups of the adsorbents viz., -OH, -COOH etc. in the effective pH ranges. The good adsorption behaviour of FLSP even in acidic pHs may be due to the ion-exchange of Cu2+ ions for H+ ions of the functional groups of the adsorbent. The Langmuir adsorption isotherm and pseudo second-order model describe well the adsorption process. The sorbents are effectively applied to treat effluents from Cu-based industries and polluted lake water. Highlights Stem powders of Feronia limonia (FLSP), Amorphophallus paeoniifolius (APSP) and Pumpkin (PSP) are identified for their strong affinity for Cu2+.; Sorbents derived from them show high sorption capacities for Cu2+.; Sorbents are effective in a wide pH range.; Adsorption nature is analyzed by thermodynamic, adsorption isotherms and kinetic models.; The adsorbents are successfully applied to treat Cu-polluted water.;B. Jagadeeswara ReddySneha Latha PalaWondwosen Kebede BiftuM. SuneethaKunta RavindhranathIWA Publishingarticleamorphophallus paeoniifoliusapplicationscu2+ removalbio-sorbentsferonia limoniapumpkin (cucurbitapepo)Environmental technology. Sanitary engineeringTD1-1066ENWater Practice and Technology, Vol 16, Iss 2, Pp 566-581 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	amorphophallus paeoniifolius applications cu2+ removal bio-sorbents feronia limonia pumpkin (cucurbitapepo) Environmental technology. Sanitary engineering TD1-1066
spellingShingle	amorphophallus paeoniifolius applications cu2+ removal bio-sorbents feronia limonia pumpkin (cucurbitapepo) Environmental technology. Sanitary engineering TD1-1066 B. Jagadeeswara Reddy Sneha Latha Pala Wondwosen Kebede Biftu M. Suneetha Kunta Ravindhranath Effective removal of Cu2+ ions from polluted water using new bio-adsorbents
description	Sorbents derived from stem powders of Feronia limonia (FLSP), Amorphophallus paeoniifolius (APSP) and Pumpkin (Cucurbitapepo) (PSP) plants are investigated for the removal of Cu2+ ions from polluted water by adopting batch methods of extraction. Extraction conditions are optimized for the effective removal of Cu2+ ions. High sorption capacities are observed: 175.5 mg/g for FLSP; 140.4 mg/g for APSP; 130.0 mg/g for PSP. Effective pH ranges are: 5 to 10 for FLSP; 6 to 10 for APSP and 7 to 10 for PSP. The three spent adsorbents can be regenerated and used. Thermodynamic parameters indicate that the adsorption process is spontaneous, endothermic and have positive change in entropy values. As ΔH values are more than 25.0 kJ/mole, the adsorption may be due to surface complex formation between Cu2+ ions and functional groups of the adsorbents viz., -OH, -COOH etc. in the effective pH ranges. The good adsorption behaviour of FLSP even in acidic pHs may be due to the ion-exchange of Cu2+ ions for H+ ions of the functional groups of the adsorbent. The Langmuir adsorption isotherm and pseudo second-order model describe well the adsorption process. The sorbents are effectively applied to treat effluents from Cu-based industries and polluted lake water. Highlights Stem powders of Feronia limonia (FLSP), Amorphophallus paeoniifolius (APSP) and Pumpkin (PSP) are identified for their strong affinity for Cu2+.; Sorbents derived from them show high sorption capacities for Cu2+.; Sorbents are effective in a wide pH range.; Adsorption nature is analyzed by thermodynamic, adsorption isotherms and kinetic models.; The adsorbents are successfully applied to treat Cu-polluted water.;
format	article
author	B. Jagadeeswara Reddy Sneha Latha Pala Wondwosen Kebede Biftu M. Suneetha Kunta Ravindhranath
author_facet	B. Jagadeeswara Reddy Sneha Latha Pala Wondwosen Kebede Biftu M. Suneetha Kunta Ravindhranath
author_sort	B. Jagadeeswara Reddy
title	Effective removal of Cu2+ ions from polluted water using new bio-adsorbents
title_short	Effective removal of Cu2+ ions from polluted water using new bio-adsorbents
title_full	Effective removal of Cu2+ ions from polluted water using new bio-adsorbents
title_fullStr	Effective removal of Cu2+ ions from polluted water using new bio-adsorbents
title_full_unstemmed	Effective removal of Cu2+ ions from polluted water using new bio-adsorbents
title_sort	effective removal of cu2+ ions from polluted water using new bio-adsorbents
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/2c14bbbb1d0241e2bfabfe9a9c7e4369
work_keys_str_mv	AT bjagadeeswarareddy effectiveremovalofcu2ionsfrompollutedwaterusingnewbioadsorbents AT snehalathapala effectiveremovalofcu2ionsfrompollutedwaterusingnewbioadsorbents AT wondwosenkebedebiftu effectiveremovalofcu2ionsfrompollutedwaterusingnewbioadsorbents AT msuneetha effectiveremovalofcu2ionsfrompollutedwaterusingnewbioadsorbents AT kuntaravindhranath effectiveremovalofcu2ionsfrompollutedwaterusingnewbioadsorbents
_version_	1718444027260436480

Effective removal of Cu2+ ions from polluted water using new bio-adsorbents

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