Ecofriendly Removal of Aluminum and Cadmium Sulfate Pollution by Adsorption on Hexanoyl-Modified Chitosan
The purity and safety of water as a finite resource is highly important in order to meet current and future human needs. To address this issue, the usage of environmentally friendly and biodegradable adsorbers and flocculants is essential. Chitosan, as a biopolymer, features tremendous properties as...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Polysaccharides |
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| Online Access: | https://www.mdpi.com/2673-4176/3/3/35 |
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| author | Berthold Reis Konstantin B. L. Borchert Martha Kafetzi Martin Müller Karina Haro Carrasco Niklas Gerlach Christine Steinbach Simona Schwarz Regine Boldt Stergios Pispas Dana Schwarz |
| author_facet | Berthold Reis Konstantin B. L. Borchert Martha Kafetzi Martin Müller Karina Haro Carrasco Niklas Gerlach Christine Steinbach Simona Schwarz Regine Boldt Stergios Pispas Dana Schwarz |
| author_sort | Berthold Reis |
| collection | DOAJ |
| description | The purity and safety of water as a finite resource is highly important in order to meet current and future human needs. To address this issue, the usage of environmentally friendly and biodegradable adsorbers and flocculants is essential. Chitosan, as a biopolymer, features tremendous properties as an adsorber and flocculant for water treatment. For the application of chitosan as an adsorber under acidic aqueous conditions, such as acid mine drainage, chitosan has been modified with hydrophobic hexanoyl chloride (H-chitosan) to reduce the solubility at a lower pH. In order to investigate the influence of the substitution of the hexanoyl chloride on the adsorption properties of chitosan, two chitosans of different molecular weights and of three different functionalization degrees were analyzed for the adsorption of CdSO<sub>4(aq)</sub> and Al<sub>2</sub>(SO<sub>4</sub>)<sub>3(aq)</sub>. Among biobased adsorbents, H-chitosan derived from the shorter Chitosan exhibited extraordinarily high maximum adsorption capacities of 1.74 mmol/g and 2.06 mmol/g for Cd<sup>2+</sup> and sulfate, and 1.76 mmol/g and 2.60 mmol/g for Al<sup>3+</sup> and sulfate, respectively. |
| first_indexed | 2024-03-09T22:44:11Z |
| format | Article |
| id | doaj.art-14ff23e4f01a47da9e7e70fb05b865dd |
| institution | Directory Open Access Journal |
| issn | 2673-4176 |
| language | English |
| last_indexed | 2024-03-09T22:44:11Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polysaccharides |
| spelling | doaj.art-14ff23e4f01a47da9e7e70fb05b865dd2023-11-23T18:32:21ZengMDPI AGPolysaccharides2673-41762022-08-013358960810.3390/polysaccharides3030035Ecofriendly Removal of Aluminum and Cadmium Sulfate Pollution by Adsorption on Hexanoyl-Modified ChitosanBerthold Reis0Konstantin B. L. Borchert1Martha Kafetzi2Martin Müller3Karina Haro Carrasco4Niklas Gerlach5Christine Steinbach6Simona Schwarz7Regine Boldt8Stergios Pispas9Dana Schwarz10Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, GermanyLeibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, GermanyTheoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635 Athens, GreeceLeibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, GermanyLeibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, GermanyLeibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, GermanyLeibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, GermanyLeibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, GermanyLeibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, GermanyTheoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635 Athens, GreeceLeibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069 Dresden, GermanyThe purity and safety of water as a finite resource is highly important in order to meet current and future human needs. To address this issue, the usage of environmentally friendly and biodegradable adsorbers and flocculants is essential. Chitosan, as a biopolymer, features tremendous properties as an adsorber and flocculant for water treatment. For the application of chitosan as an adsorber under acidic aqueous conditions, such as acid mine drainage, chitosan has been modified with hydrophobic hexanoyl chloride (H-chitosan) to reduce the solubility at a lower pH. In order to investigate the influence of the substitution of the hexanoyl chloride on the adsorption properties of chitosan, two chitosans of different molecular weights and of three different functionalization degrees were analyzed for the adsorption of CdSO<sub>4(aq)</sub> and Al<sub>2</sub>(SO<sub>4</sub>)<sub>3(aq)</sub>. Among biobased adsorbents, H-chitosan derived from the shorter Chitosan exhibited extraordinarily high maximum adsorption capacities of 1.74 mmol/g and 2.06 mmol/g for Cd<sup>2+</sup> and sulfate, and 1.76 mmol/g and 2.60 mmol/g for Al<sup>3+</sup> and sulfate, respectively.https://www.mdpi.com/2673-4176/3/3/35modified chitosanheavy metal ion adsorptioncadmium and aluminum removalpH stable chitosanwastewater treatment |
| spellingShingle | Berthold Reis Konstantin B. L. Borchert Martha Kafetzi Martin Müller Karina Haro Carrasco Niklas Gerlach Christine Steinbach Simona Schwarz Regine Boldt Stergios Pispas Dana Schwarz Ecofriendly Removal of Aluminum and Cadmium Sulfate Pollution by Adsorption on Hexanoyl-Modified Chitosan Polysaccharides modified chitosan heavy metal ion adsorption cadmium and aluminum removal pH stable chitosan wastewater treatment |
| title | Ecofriendly Removal of Aluminum and Cadmium Sulfate Pollution by Adsorption on Hexanoyl-Modified Chitosan |
| title_full | Ecofriendly Removal of Aluminum and Cadmium Sulfate Pollution by Adsorption on Hexanoyl-Modified Chitosan |
| title_fullStr | Ecofriendly Removal of Aluminum and Cadmium Sulfate Pollution by Adsorption on Hexanoyl-Modified Chitosan |
| title_full_unstemmed | Ecofriendly Removal of Aluminum and Cadmium Sulfate Pollution by Adsorption on Hexanoyl-Modified Chitosan |
| title_short | Ecofriendly Removal of Aluminum and Cadmium Sulfate Pollution by Adsorption on Hexanoyl-Modified Chitosan |
| title_sort | ecofriendly removal of aluminum and cadmium sulfate pollution by adsorption on hexanoyl modified chitosan |
| topic | modified chitosan heavy metal ion adsorption cadmium and aluminum removal pH stable chitosan wastewater treatment |
| url | https://www.mdpi.com/2673-4176/3/3/35 |
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