Removal of phenolphthalein and methyl orange from laboratory wastewater using tetraethylammonium modified kaolinite clay
Developing an efficient technique for the treatment of laboratory wastewater is a challenge. In response, kaolinite clay (CLY) was functionalized with tetraethylammonium bromide to produce tetraethylammonium modified kaolinite clay (CLY@AM). Both CLY and CLY@AM were characterized with X-ray diffract...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-01-01
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| Series: | Current Research in Green and Sustainable Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666086522000625 |
| _version_ | 1811177606660227072 |
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| author | Adewale Adewuyi Rotimi A. Oderinde |
| author_facet | Adewale Adewuyi Rotimi A. Oderinde |
| author_sort | Adewale Adewuyi |
| collection | DOAJ |
| description | Developing an efficient technique for the treatment of laboratory wastewater is a challenge. In response, kaolinite clay (CLY) was functionalized with tetraethylammonium bromide to produce tetraethylammonium modified kaolinite clay (CLY@AM). Both CLY and CLY@AM were characterized with X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM). CLY and CLY@AM were evaluated for their ability to remove phenolphthalein (PH) and methyl orange (MO) from laboratory wastewater. Peaks from FTIR and XRD suggests the formation of CLY@AM, while SEM micrograph revealed the surfaces of CLY and CLY@AM to be irregularly shaped while CLY@AM has some patches. The adsorption capacities exhibited by CLY@AM towards PH (43.00 mg g−1) and MO (40.00 mg g−1) were found more promising compared to CLY, which showed 20.00 and 22.00 mg g−1 towards MO and PH, respectively. The ΔHo value for the sorption of PH was found to be −71.7523 kJ mol−1, while the value was −46.1826 kJ mol−1 for MO. The ΔHo values are negative in nature which suggests the process to be exothermic. The removal of MO and PH from the solution may be described by Langmuir isotherm with a regeneration capacity above 80% even at the 14th regeneration cycle. Applying CLY@AM towards the purification of raw laboratory wastewater contaminated with PH and MO further proves the effectiveness of CLAY@AM as a potentially efficient material for the purification of laboratory wastewater systems contaminated with PH and MO. |
| first_indexed | 2024-04-11T06:04:15Z |
| format | Article |
| id | doaj.art-7d700d0a96e34dbe801eb5dfd13af9f2 |
| institution | Directory Open Access Journal |
| issn | 2666-0865 |
| language | English |
| last_indexed | 2024-04-11T06:04:15Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Current Research in Green and Sustainable Chemistry |
| spelling | doaj.art-7d700d0a96e34dbe801eb5dfd13af9f22022-12-22T04:41:32ZengElsevierCurrent Research in Green and Sustainable Chemistry2666-08652022-01-015100320Removal of phenolphthalein and methyl orange from laboratory wastewater using tetraethylammonium modified kaolinite clayAdewale Adewuyi0Rotimi A. Oderinde1Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun State, Nigeria; Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA, CONICET-CCT La Plata), Facultad de Ciencias Exactas, Departamento de Química, Universidad Nacional de La Plata, Casilla de Correo 16, Sucursal 4, 1900, La Plata, Argentina; Corresponding author. Department of Chemical Sciences, Faculty of Natural Sciences, Redeemer's University, Ede, Osun State, Nigeria.Department of Chemistry, Faculty of Science, University of Ibadan, Ibadan, Oyo State, NigeriaDeveloping an efficient technique for the treatment of laboratory wastewater is a challenge. In response, kaolinite clay (CLY) was functionalized with tetraethylammonium bromide to produce tetraethylammonium modified kaolinite clay (CLY@AM). Both CLY and CLY@AM were characterized with X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM). CLY and CLY@AM were evaluated for their ability to remove phenolphthalein (PH) and methyl orange (MO) from laboratory wastewater. Peaks from FTIR and XRD suggests the formation of CLY@AM, while SEM micrograph revealed the surfaces of CLY and CLY@AM to be irregularly shaped while CLY@AM has some patches. The adsorption capacities exhibited by CLY@AM towards PH (43.00 mg g−1) and MO (40.00 mg g−1) were found more promising compared to CLY, which showed 20.00 and 22.00 mg g−1 towards MO and PH, respectively. The ΔHo value for the sorption of PH was found to be −71.7523 kJ mol−1, while the value was −46.1826 kJ mol−1 for MO. The ΔHo values are negative in nature which suggests the process to be exothermic. The removal of MO and PH from the solution may be described by Langmuir isotherm with a regeneration capacity above 80% even at the 14th regeneration cycle. Applying CLY@AM towards the purification of raw laboratory wastewater contaminated with PH and MO further proves the effectiveness of CLAY@AM as a potentially efficient material for the purification of laboratory wastewater systems contaminated with PH and MO.http://www.sciencedirect.com/science/article/pii/S2666086522000625AdsorptionClay adsorbentColour indicatorsLaboratory wastewaterWater purification |
| spellingShingle | Adewale Adewuyi Rotimi A. Oderinde Removal of phenolphthalein and methyl orange from laboratory wastewater using tetraethylammonium modified kaolinite clay Current Research in Green and Sustainable Chemistry Adsorption Clay adsorbent Colour indicators Laboratory wastewater Water purification |
| title | Removal of phenolphthalein and methyl orange from laboratory wastewater using tetraethylammonium modified kaolinite clay |
| title_full | Removal of phenolphthalein and methyl orange from laboratory wastewater using tetraethylammonium modified kaolinite clay |
| title_fullStr | Removal of phenolphthalein and methyl orange from laboratory wastewater using tetraethylammonium modified kaolinite clay |
| title_full_unstemmed | Removal of phenolphthalein and methyl orange from laboratory wastewater using tetraethylammonium modified kaolinite clay |
| title_short | Removal of phenolphthalein and methyl orange from laboratory wastewater using tetraethylammonium modified kaolinite clay |
| title_sort | removal of phenolphthalein and methyl orange from laboratory wastewater using tetraethylammonium modified kaolinite clay |
| topic | Adsorption Clay adsorbent Colour indicators Laboratory wastewater Water purification |
| url | http://www.sciencedirect.com/science/article/pii/S2666086522000625 |
| work_keys_str_mv | AT adewaleadewuyi removalofphenolphthaleinandmethylorangefromlaboratorywastewaterusingtetraethylammoniummodifiedkaoliniteclay AT rotimiaoderinde removalofphenolphthaleinandmethylorangefromlaboratorywastewaterusingtetraethylammoniummodifiedkaoliniteclay |