New approach for starch dialdehyde preparation using microwave irradiation for removal of heavy metal ions from water
Abstract This work presents a new and simple approach to prepare Dialdehyde Starch (DAS) in one step under microwave irradiations and using, a mild and safer oxidizing agent, potassium iodate. Aldehyde content was evaluated to compare the synthesis results with DAS prepared using potassium periodate...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Springer
2022-04-01
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| Series: | SN Applied Sciences |
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| Online Access: | https://doi.org/10.1007/s42452-022-05024-w |
| _version_ | 1811260867953557504 |
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| author | Alnada Wannous Slieman Milaneh Majd Said Yomen Atassi |
| author_facet | Alnada Wannous Slieman Milaneh Majd Said Yomen Atassi |
| author_sort | Alnada Wannous |
| collection | DOAJ |
| description | Abstract This work presents a new and simple approach to prepare Dialdehyde Starch (DAS) in one step under microwave irradiations and using, a mild and safer oxidizing agent, potassium iodate. Aldehyde content was evaluated to compare the synthesis results with DAS prepared using potassium periodate as an oxidizing agent for starch. To optimize the synthesis parameters of the new approach, the effect of the quantity of oxidizing agent and the effect of reaction time on the content of aldehyde in DAS were evaluated. According to the results, the optimized time was 10 min at the power of 300 W, and the number of moles of oxidizing agent was 0.014 mol per 2 g of starch. After that, DAS was used to prepare two Schiff bases by reaction with urea (DASU) and thiourea (DASTU), respectively. DAS, DASU and DASTU were characterized by FTIR, XRD, and SEM. Furthermore, DAS, DASU and DASTU were investigated for removing Cu(II), Pb(II), Hg(II), Cd(II), and Cr(III) ions from water. DAS showed the highest removal efficiency towards Pb(II) ions, whereas DASTU exhibited excellent ability for removing the Hg(II) ions. The removal efficiencies of DAS for Pb(II) ions and DASTU for Hg(II) ions are 95.25% and 89.45%, respectively from aqueous solutions containing 100 ppm of respective ions. Adsorption isotherm study suggests that adsorption follows Langmuir isotherm model, (correlation factors (R 2) for Langmuir and Freundlich models for DAS/Pb are equal to 0.984 and 0.799, respectively, and for DASTU/Hg they are 0.995 and 0.813, respectively). The theoretical maximum adsorption capacity for DAS/Pb and DASTU/Hg are 245.09 and 180.83 mg/g, respectively. |
| first_indexed | 2024-04-12T18:54:04Z |
| format | Article |
| id | doaj.art-79ccdef334744b89b55b2ca6a2dde9be |
| institution | Directory Open Access Journal |
| issn | 2523-3963 2523-3971 |
| language | English |
| last_indexed | 2024-04-12T18:54:04Z |
| publishDate | 2022-04-01 |
| publisher | Springer |
| record_format | Article |
| series | SN Applied Sciences |
| spelling | doaj.art-79ccdef334744b89b55b2ca6a2dde9be2022-12-22T03:20:24ZengSpringerSN Applied Sciences2523-39632523-39712022-04-014511110.1007/s42452-022-05024-wNew approach for starch dialdehyde preparation using microwave irradiation for removal of heavy metal ions from waterAlnada Wannous0Slieman Milaneh1Majd Said2Yomen Atassi3Department of Applied Physics, Laboratory of Materials Sciences, Higher Institute for Applied Sciences and TechnologyDepartment of Applied Physics, Laboratory of Materials Sciences, Higher Institute for Applied Sciences and TechnologyDepartment of Applied Physics, Laboratory of Materials Sciences, Higher Institute for Applied Sciences and TechnologyDepartment of Applied Physics, Laboratory of Materials Sciences, Higher Institute for Applied Sciences and TechnologyAbstract This work presents a new and simple approach to prepare Dialdehyde Starch (DAS) in one step under microwave irradiations and using, a mild and safer oxidizing agent, potassium iodate. Aldehyde content was evaluated to compare the synthesis results with DAS prepared using potassium periodate as an oxidizing agent for starch. To optimize the synthesis parameters of the new approach, the effect of the quantity of oxidizing agent and the effect of reaction time on the content of aldehyde in DAS were evaluated. According to the results, the optimized time was 10 min at the power of 300 W, and the number of moles of oxidizing agent was 0.014 mol per 2 g of starch. After that, DAS was used to prepare two Schiff bases by reaction with urea (DASU) and thiourea (DASTU), respectively. DAS, DASU and DASTU were characterized by FTIR, XRD, and SEM. Furthermore, DAS, DASU and DASTU were investigated for removing Cu(II), Pb(II), Hg(II), Cd(II), and Cr(III) ions from water. DAS showed the highest removal efficiency towards Pb(II) ions, whereas DASTU exhibited excellent ability for removing the Hg(II) ions. The removal efficiencies of DAS for Pb(II) ions and DASTU for Hg(II) ions are 95.25% and 89.45%, respectively from aqueous solutions containing 100 ppm of respective ions. Adsorption isotherm study suggests that adsorption follows Langmuir isotherm model, (correlation factors (R 2) for Langmuir and Freundlich models for DAS/Pb are equal to 0.984 and 0.799, respectively, and for DASTU/Hg they are 0.995 and 0.813, respectively). The theoretical maximum adsorption capacity for DAS/Pb and DASTU/Hg are 245.09 and 180.83 mg/g, respectively.https://doi.org/10.1007/s42452-022-05024-wDialdehyde starchPotassium iodateMicrowave irradiationHeavy metalsSchiff base |
| spellingShingle | Alnada Wannous Slieman Milaneh Majd Said Yomen Atassi New approach for starch dialdehyde preparation using microwave irradiation for removal of heavy metal ions from water SN Applied Sciences Dialdehyde starch Potassium iodate Microwave irradiation Heavy metals Schiff base |
| title | New approach for starch dialdehyde preparation using microwave irradiation for removal of heavy metal ions from water |
| title_full | New approach for starch dialdehyde preparation using microwave irradiation for removal of heavy metal ions from water |
| title_fullStr | New approach for starch dialdehyde preparation using microwave irradiation for removal of heavy metal ions from water |
| title_full_unstemmed | New approach for starch dialdehyde preparation using microwave irradiation for removal of heavy metal ions from water |
| title_short | New approach for starch dialdehyde preparation using microwave irradiation for removal of heavy metal ions from water |
| title_sort | new approach for starch dialdehyde preparation using microwave irradiation for removal of heavy metal ions from water |
| topic | Dialdehyde starch Potassium iodate Microwave irradiation Heavy metals Schiff base |
| url | https://doi.org/10.1007/s42452-022-05024-w |
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