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| Removal of Fluoride from Drinking Water with Aluminum Chloride Modified Composite Bioflocculant |
| Received:April 05, 2019 Revised:April 08, 2019 |
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| DOI：doi：10.3969/j.issn.1007-7545.2019.10.017 |
| KeyWord:modified composite bioflocculant; F- removal; drinking water |
| Author | Institution |
| SONG shumin |
昆明理工大学环境科学与工程学院 |
| Liu wei |
昆明标洁环保科技有限责任公司 |
| XU Xiaojun |
昆明理工大学环境科学与工程学院 |
| CAO guangzhu |
昆明理工大学国土资源工程学院 |
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| Abstract: |
| Aluminum-resistant non-toxic complex bacterium screened by laboratory was modified by AlCl3?6H2O to remove fluorine from drinking water. Effects of dosage of modified bioflocculant, pH value and reaction time on F- removal effect were studied. Surface morphology of complex bioflocculant and modified bioflocculant was observed by scanning electron microscopy (SEM), and fluorine removal mechanism of modified composite bioflocculant was analyzed. The results show that after modification with aluminum chloride, hydroxyl groups and Al3+ on surface of composite bioflocculant rise, and aluminum hydroxide is formed on surface of flocculant. Fluorine removal mechanism is by means of aluminum fluoride complexing, hydrogen bond and electrostatic adsorption. |
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