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| Study on the Desorption of Aluminum Salts Modified Bentonite by Ultrasound |
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| DOI：10.11981/j.issn.1000-6842.2016.01.7 |
| Key Words:aluminum salts modified bentonite； desilication； desorption by ultrasound |
| Author Name | Affiliation | | 林 涛1 | 1.陕西科技大学轻工与能源学院,陕西省造纸技术及特种纸品开发重点实验室,陕西西安,710021 | | 付 玥1,* | 1.陕西科技大学轻工与能源学院,陕西省造纸技术及特种纸品开发重点实验室,陕西西安,710021 | | 徐永建1,2,3 | 1.陕西科技大学轻工与能源学院,陕西省造纸技术及特种纸品开发重点实验室,陕西西安,710021；2.陕西科技大学材料科学与工程博士后流动站,陕西西安,710021；3.贵州赤天化集团有限责任公司,贵州赤水,564700 | | 张鼎军3 | 3.贵州赤天化集团有限责任公司,贵州赤水,564700 | | 朱振峰2 | 2.陕西科技大学材料科学与工程博士后流动站,陕西西安,710021 |
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| Abstract: |
| Ultrasound process was used to desorb silicon from aluminium salt modified bentonite after it was applied in desilication(Si-AlMB), in order to achieve recycled application of the modified bentonite in the production. Based on the study of the desorption process, the optimum desorption process was: NaOH solution dosage 30 mL/g, temperature 60℃, ultrasound power 150 W and ultrasonic treatment 3 min. After treatment, the silicon desorption rate was 84.5%. The ultrasonic process could effectively remove the silicon from Si-AlMB. The desorbed material was characterized by SEM, FT-IR and EDX, and the main composition of desorption material was aluminosilicate. In the desorption process, the ultrasound destroyed the chemical bond of aluminum atoms and bentonite and the chemical bond between the aluminum atom and silicon atom. The silicon and aluminum were simultaneously desorbed. |
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