Adsorption Performance for Reactive Blue 221 Dye of β-Chitosan/Polyamine Functionalized Graphene Oxide Hybrid Adsorbent with High Acid–Alkali Resistance Stability in Different Acid–Alkaline Environments
| Autor: | Yu-Chian Soong, Chih-Lung Lin, Chih-Wei Chiu, Ming-Tsung Wu, William Anderson Lee Sanchez, Jimmy Chi-Min Lee, Chen-Yang Huang, Hsuan-Yu Lin, Jia-Wun Li |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
General Chemical Engineering
education Oxide 02 engineering and technology 010501 environmental sciences 01 natural sciences effluent treatment Article law.invention Chitosan lcsh:Chemistry chemistry.chemical_compound Adsorption law Reactive dye General Materials Science Benzene 0105 earth and related environmental sciences β-chitosan Graphene technology industry and agriculture food and beverages 021001 nanoscience & nanotechnology Alkali metal chemistry lcsh:QD1-999 adsorption graphene oxide 0210 nano-technology Hybrid material Nuclear chemistry reactive blue 221 dye |
| Zdroj: | Nanomaterials, Vol 10, Iss 748, p 748 (2020) Nanomaterials Volume 10 Issue 4 |
| ISSN: | 2079-4991 |
| Popis: | A hybrid material obtained by blending &beta chitosan (CS) with triethylenetetramine-functionalized graphene oxide (TFGO) (CSGO), was used as an adsorbent for a reactive dye (C.I. Reactive Blue 221 Dye, RB221), and the adsorption and removal performances of unmodified CS and mix-modified CSGO were investigated and compared systematically at different pH values (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12). The adsorption capacities of CS and CSGO were 45.5 and 56.1 mg/g, respectively, at a pH of 2 and 5.4 and 37.2 mg/g, respectively, at a pH of 12. This indicates that TFGO was successfully introduced into CSGO, enabling &pi &ndash &pi interactions and electrostatic attraction with the dye molecules. Additionally, benzene ring-shaped GO exhibited a high surface chemical stability, which was conducive to maintaining the stability of the acid and alkali resistance of the CSGO adsorbent. The RB221 adsorption performance of CS and CSGO at acidic condition (pH 3) and alkaline condition (pH 12) and different temperatures was investigated by calculating the adsorption kinetics and isotherms of adsorbents. Overall, the adsorption efficiency of CSGO was superior to that of CS thus, CSGO is promising for the treatment of dye effluents in a wide pH range. |
| Databáze: | OpenAIRE |
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