Efficient Removal of Heavy Metal Ions in Wastewater by Using a Novel Alginate-EDTA Hybrid Aerogel
In this study, we prepared a novel calcium alginate-disodium ethylenediaminetetraacetate dihydrate hybrid aerogel (Alg-EDTA) by chemical grafting and vacuum-freeze-drying to remove heavy metal ions from wastewater. Experimental results show that the as-prepared Alg-EDTA adsorbent has a high affinity...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-02-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/9/3/547 |
| _version_ | 1818510864728195072 |
|---|---|
| author | Min Wang Zhuqing Wang Xiaohong Zhou Shikun Li |
| author_facet | Min Wang Zhuqing Wang Xiaohong Zhou Shikun Li |
| author_sort | Min Wang |
| collection | DOAJ |
| description | In this study, we prepared a novel calcium alginate-disodium ethylenediaminetetraacetate dihydrate hybrid aerogel (Alg-EDTA) by chemical grafting and vacuum-freeze-drying to remove heavy metal ions from wastewater. Experimental results show that the as-prepared Alg-EDTA adsorbent has a high affinity for heavy metal ions, such as Cd<sup>2+</sup>, Pb<sup>2+</sup>, Cu<sup>2+</sup>, Cr<sup>3+</sup>, and Co<sup>2+</sup>, and can adsorb >85% of metal ions from the corresponding solution. Alg-EDTA also exhibits high selectivity toward Cd<sup>2+</sup>, and the maximum adsorption capacity for Cd<sup>2+</sup> reached 177.3 mg/g, which exceeds the adsorption capacity of most reported Cd<sup>2+</sup>-adsorbents. Adsorbent regeneration can be achieved by a simple acid-washing process, and adsorption performance of Alg-EDTA remains stable after repeated use. All these findings indicate that Alg-EDTA has a promising prospect in the treatment of heavy metal ions wastewater. |
| first_indexed | 2024-12-10T23:25:56Z |
| format | Article |
| id | doaj.art-282a240b722d47579306baf94eebcb5b |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-10T23:25:56Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-282a240b722d47579306baf94eebcb5b2022-12-22T01:29:35ZengMDPI AGApplied Sciences2076-34172019-02-019354710.3390/app9030547app9030547Efficient Removal of Heavy Metal Ions in Wastewater by Using a Novel Alginate-EDTA Hybrid AerogelMin Wang0Zhuqing Wang1Xiaohong Zhou2Shikun Li3AnHui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, College of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246133, ChinaAnHui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, College of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246133, ChinaAnHui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, College of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246133, ChinaInstitute of Applied and Physical Chemistry, Faculty 2 (Chemistry/Biology), University of Bremen, D-28359 Bremen, GermanyIn this study, we prepared a novel calcium alginate-disodium ethylenediaminetetraacetate dihydrate hybrid aerogel (Alg-EDTA) by chemical grafting and vacuum-freeze-drying to remove heavy metal ions from wastewater. Experimental results show that the as-prepared Alg-EDTA adsorbent has a high affinity for heavy metal ions, such as Cd<sup>2+</sup>, Pb<sup>2+</sup>, Cu<sup>2+</sup>, Cr<sup>3+</sup>, and Co<sup>2+</sup>, and can adsorb >85% of metal ions from the corresponding solution. Alg-EDTA also exhibits high selectivity toward Cd<sup>2+</sup>, and the maximum adsorption capacity for Cd<sup>2+</sup> reached 177.3 mg/g, which exceeds the adsorption capacity of most reported Cd<sup>2+</sup>-adsorbents. Adsorbent regeneration can be achieved by a simple acid-washing process, and adsorption performance of Alg-EDTA remains stable after repeated use. All these findings indicate that Alg-EDTA has a promising prospect in the treatment of heavy metal ions wastewater.https://www.mdpi.com/2076-3417/9/3/547heavy metal ionssorbentaerogelsodium alginate |
| spellingShingle | Min Wang Zhuqing Wang Xiaohong Zhou Shikun Li Efficient Removal of Heavy Metal Ions in Wastewater by Using a Novel Alginate-EDTA Hybrid Aerogel Applied Sciences heavy metal ions sorbent aerogel sodium alginate |
| title | Efficient Removal of Heavy Metal Ions in Wastewater by Using a Novel Alginate-EDTA Hybrid Aerogel |
| title_full | Efficient Removal of Heavy Metal Ions in Wastewater by Using a Novel Alginate-EDTA Hybrid Aerogel |
| title_fullStr | Efficient Removal of Heavy Metal Ions in Wastewater by Using a Novel Alginate-EDTA Hybrid Aerogel |
| title_full_unstemmed | Efficient Removal of Heavy Metal Ions in Wastewater by Using a Novel Alginate-EDTA Hybrid Aerogel |
| title_short | Efficient Removal of Heavy Metal Ions in Wastewater by Using a Novel Alginate-EDTA Hybrid Aerogel |
| title_sort | efficient removal of heavy metal ions in wastewater by using a novel alginate edta hybrid aerogel |
| topic | heavy metal ions sorbent aerogel sodium alginate |
| url | https://www.mdpi.com/2076-3417/9/3/547 |
| work_keys_str_mv | AT minwang efficientremovalofheavymetalionsinwastewaterbyusinganovelalginateedtahybridaerogel AT zhuqingwang efficientremovalofheavymetalionsinwastewaterbyusinganovelalginateedtahybridaerogel AT xiaohongzhou efficientremovalofheavymetalionsinwastewaterbyusinganovelalginateedtahybridaerogel AT shikunli efficientremovalofheavymetalionsinwastewaterbyusinganovelalginateedtahybridaerogel |