| 秦 芳,喻杏元,蒋钦凤,付 硕,陈金毅.Mg/Al水滑石对腐殖酸的去除性能研究[J].材料导报,2015,29(16):79-81, 84 |
| Mg/Al水滑石对腐殖酸的去除性能研究 |
| Adsorption Removal of Humic Acid by Mg/Al Hydrotalcite |
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| DOI：10.11896/j.issn.1005-023X.2015.16.017 |
| 中文关键词: 水滑石 腐殖酸 吸附 |
| 英文关键词: hydrotalcite, humic acid, adsorption |
| 基金项目:教育部新世纪优秀人才计划项目(NCET-12-0713)；国家自然科学基金(51374157)；湖北省自然科学基金(2013CFA106)；武汉工程大学研究生教育创新基金(CX2014111) |
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| 中文摘要: |
| 采用共沉淀法制备了Mg/Al水滑石,并在不同温度下煅烧。探究了煅烧温度、材料投加量、pH值、腐殖酸初始浓度对水滑石去除腐殖酸的影响。结果表明,当金属物质的量比为3的Mg/Al 水滑石投加量为0.5 g/L,pH值为8.5,温度为25 ℃时,水滑石对10 mg/L的腐殖酸的去除率能达到 96.64%,此时,水滑石的饱和吸附量为19.33 mg/g。Mg/Al水滑石经3次再生后,对腐殖酸的去除率仍然高达95%以上,表明Mg/Al水滑石的可重用性好。 |
| 英文摘要: |
| Different Mg/Al ratio hydrotalcite were prepared by co-precipitation. Effect of calcination temperature, adsorbent dosage, pH,the initial concentration of humic acid were studied. The results show that when Mg/Al hydrotalcite(Mg/Al ratio=3) dosage was 0.5 g/L, the concentration of humic acid was 10 mg/L, temperature was 25 ℃, pH was 8.5, the humic acid removal rate reached 96.64%,while the saturated adsorption capacity of hydrotalcite was 19.33 mg/g. Mg/Al hydrotalcite has good reusability through the study on regeneration performance. After three regeneration cycles of hydrotalcite, the regeneration rate can reach more than 95%. |
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