Adsorption of Indigo Carmine onto Chemically Activated Carbons Derived from the Cameroonian Agricultural Waste Garcinia cola Nut Shells and Desorption Studies
In the quest for a sustainable environment and clean water resources, the efficacy of activated carbons synthesized from Garcinia cola nut shells impregnated with KOH (CBK1/1) and ZnCl2 (CBZ1/1) for the adsorption of indigo carmine (IC) dye was studied using the batch technique. The prepared activat...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2022-01-01
|
| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2022/1236621 |
| _version_ | 1798036122660503552 |
|---|---|
| author | Idris-Hermann Tiotsop Kuete Raoul Donald Tchuifon Tchuifon Aurelien Bopda Christian Sadeu Ngakou George Ndifor-Angwafor Nche Solomon Gabche Anagho |
| author_facet | Idris-Hermann Tiotsop Kuete Raoul Donald Tchuifon Tchuifon Aurelien Bopda Christian Sadeu Ngakou George Ndifor-Angwafor Nche Solomon Gabche Anagho |
| author_sort | Idris-Hermann Tiotsop Kuete |
| collection | DOAJ |
| description | In the quest for a sustainable environment and clean water resources, the efficacy of activated carbons synthesized from Garcinia cola nut shells impregnated with KOH (CBK1/1) and ZnCl2 (CBZ1/1) for the adsorption of indigo carmine (IC) dye was studied using the batch technique. The prepared activated carbons were characterized using iodine number, elemental analysis, scanning electron microscopy (SEM), FTIR spectroscopy, powder X-ray diffraction (XRD), TGA/DTA, Boehm titration, and pH at point of zero charge. The elemental analysis showed a high percentage of carbon in both activated carbons (ACs). FTIR and Boehm titration analysis indicated the presence of several functional groups on the surfaces of both ACs which could influence the adsorption of IC. The primary adsorption mechanisms involved electrostatic interaction, hydrogen bonds formation, and π−π interactions. Maximum adsorption capacity values obtained using the Fritz–Schlunder III three-parameter model were 19.019 mg·g−1 and 18.299 mg·g−1 for CBK1/1 and CBZ1/1, respectively. The Fritz–Schlunder model exponent mFS of value less than 1 showed that the adsorption of IC by the ACs occurred on heterogeneous surfaces. Positive values of ∆Q obtained by the linear and nonlinear forms of the Temkin model indicate the exothermic character of the adsorption process. |
| first_indexed | 2024-04-11T21:08:12Z |
| format | Article |
| id | doaj.art-b92c74c1721e4c88ade535e812268fef |
| institution | Directory Open Access Journal |
| issn | 2090-9071 |
| language | English |
| last_indexed | 2024-04-11T21:08:12Z |
| publishDate | 2022-01-01 |
| publisher | Hindawi Limited |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj.art-b92c74c1721e4c88ade535e812268fef2022-12-22T04:03:10ZengHindawi LimitedJournal of Chemistry2090-90712022-01-01202210.1155/2022/1236621Adsorption of Indigo Carmine onto Chemically Activated Carbons Derived from the Cameroonian Agricultural Waste Garcinia cola Nut Shells and Desorption StudiesIdris-Hermann Tiotsop Kuete0Raoul Donald Tchuifon Tchuifon1Aurelien Bopda2Christian Sadeu Ngakou3George Ndifor-Angwafor Nche4Solomon Gabche Anagho5Materials and Process Engineering Team (MPET)Materials and Process Engineering Team (MPET)Materials and Process Engineering Team (MPET)Materials and Process Engineering Team (MPET)Materials and Process Engineering Team (MPET)Materials and Process Engineering Team (MPET)In the quest for a sustainable environment and clean water resources, the efficacy of activated carbons synthesized from Garcinia cola nut shells impregnated with KOH (CBK1/1) and ZnCl2 (CBZ1/1) for the adsorption of indigo carmine (IC) dye was studied using the batch technique. The prepared activated carbons were characterized using iodine number, elemental analysis, scanning electron microscopy (SEM), FTIR spectroscopy, powder X-ray diffraction (XRD), TGA/DTA, Boehm titration, and pH at point of zero charge. The elemental analysis showed a high percentage of carbon in both activated carbons (ACs). FTIR and Boehm titration analysis indicated the presence of several functional groups on the surfaces of both ACs which could influence the adsorption of IC. The primary adsorption mechanisms involved electrostatic interaction, hydrogen bonds formation, and π−π interactions. Maximum adsorption capacity values obtained using the Fritz–Schlunder III three-parameter model were 19.019 mg·g−1 and 18.299 mg·g−1 for CBK1/1 and CBZ1/1, respectively. The Fritz–Schlunder model exponent mFS of value less than 1 showed that the adsorption of IC by the ACs occurred on heterogeneous surfaces. Positive values of ∆Q obtained by the linear and nonlinear forms of the Temkin model indicate the exothermic character of the adsorption process.http://dx.doi.org/10.1155/2022/1236621 |
| spellingShingle | Idris-Hermann Tiotsop Kuete Raoul Donald Tchuifon Tchuifon Aurelien Bopda Christian Sadeu Ngakou George Ndifor-Angwafor Nche Solomon Gabche Anagho Adsorption of Indigo Carmine onto Chemically Activated Carbons Derived from the Cameroonian Agricultural Waste Garcinia cola Nut Shells and Desorption Studies Journal of Chemistry |
| title | Adsorption of Indigo Carmine onto Chemically Activated Carbons Derived from the Cameroonian Agricultural Waste Garcinia cola Nut Shells and Desorption Studies |
| title_full | Adsorption of Indigo Carmine onto Chemically Activated Carbons Derived from the Cameroonian Agricultural Waste Garcinia cola Nut Shells and Desorption Studies |
| title_fullStr | Adsorption of Indigo Carmine onto Chemically Activated Carbons Derived from the Cameroonian Agricultural Waste Garcinia cola Nut Shells and Desorption Studies |
| title_full_unstemmed | Adsorption of Indigo Carmine onto Chemically Activated Carbons Derived from the Cameroonian Agricultural Waste Garcinia cola Nut Shells and Desorption Studies |
| title_short | Adsorption of Indigo Carmine onto Chemically Activated Carbons Derived from the Cameroonian Agricultural Waste Garcinia cola Nut Shells and Desorption Studies |
| title_sort | adsorption of indigo carmine onto chemically activated carbons derived from the cameroonian agricultural waste garcinia cola nut shells and desorption studies |
| url | http://dx.doi.org/10.1155/2022/1236621 |
| work_keys_str_mv | AT idrishermanntiotsopkuete adsorptionofindigocarmineontochemicallyactivatedcarbonsderivedfromthecameroonianagriculturalwastegarciniacolanutshellsanddesorptionstudies AT raouldonaldtchuifontchuifon adsorptionofindigocarmineontochemicallyactivatedcarbonsderivedfromthecameroonianagriculturalwastegarciniacolanutshellsanddesorptionstudies AT aurelienbopda adsorptionofindigocarmineontochemicallyactivatedcarbonsderivedfromthecameroonianagriculturalwastegarciniacolanutshellsanddesorptionstudies AT christiansadeungakou adsorptionofindigocarmineontochemicallyactivatedcarbonsderivedfromthecameroonianagriculturalwastegarciniacolanutshellsanddesorptionstudies AT georgendiforangwafornche adsorptionofindigocarmineontochemicallyactivatedcarbonsderivedfromthecameroonianagriculturalwastegarciniacolanutshellsanddesorptionstudies AT solomongabcheanagho adsorptionofindigocarmineontochemicallyactivatedcarbonsderivedfromthecameroonianagriculturalwastegarciniacolanutshellsanddesorptionstudies |