| 余雅琳,高菲,杨德坤,李琦,孙露露,梁剑茹,周立祥.植物多酚吸持硫酸铁沉淀法去除猪场粪污废水中氨氮的研究[J].农业环境科学学报,2017,36(11):2343-2348. |
| 植物多酚吸持硫酸铁沉淀法去除猪场粪污废水中氨氮的研究 |
| Removal of ammonium nitrogen from piggery wastewater by complexation with natural plant polyphenols |
| 投稿时间：2017-05-03 |
| DOI：10.11654/jaes.2017-0644 |
| 中文关键词: 植物多酚 单宁 猪场粪污废水 氨氮 吸持 去除 |
| 英文关键词: plant polyphenol tannin piggery wastewater ammonia complexation removal |
| 基金项目:国家自然科学基金项目（21477054） |
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| 摘要点击次数: 2079 |
| 全文下载次数: 1953 |
| 中文摘要: |
| 以天然植物多酚（单宁）为吸持剂，以硫酸铁为沉淀剂，研究了废水pH、初始氨氮浓度、温度、吸附剂投加量等因素对吸持沉淀法去除氨氮的影响。研究结果表明：供试材料的最大吸附量达到13.8 mg·g-1，是人造沸石吸附量的2.4倍；在研究设定的投加量范围内，随着投加量的增加，氨氮去除率持续上升，达到16.3%；在试验条件下，供试材料对猪场废水的吸附量达到19.3 mg·g-1，是人造沸石的3.3倍，略优于阳离子交换树脂。植物多酚（单宁）吸持硫酸铁沉淀法有望作为一种新方法用于含氨氮废水的快速处理。 |
| 英文摘要: |
| Adsorption is a proven means of efficiently removing ammonia nitrogen(NH4+-N) from wastewater, and natural plant polyphenols are reported as excellent biosorbents for the removal of NH4+-N. In the present study, a soluble natural plant polyphenol, tannin, was added into NH4+-N-containing wastewater to form a complex compound of plant polyphenol-ammonia, and then this complex compound was precipitated by a precipitant ferric sulfate. Natural plant polyphenol exhibited high adsorption capacity for NH4+ in piggery wastewater. The effects of pH, initial concentration of NH4+-N, temperature, and adsorbent dosage on the adsorption of NH4+-N were investigated. Results showed that complexation capacity of NH4+-N onto the tested natural plant polyphenol were 13.8 mg·g-1 in 3 hours, 2.4 times higher than that of zeolite. The efficiency of NH4+-N removal was increased to 16.3% with an increase in the concentration of natural plant polyphenols. Under the optimum conditions, the adsorption capacity of natural plant polyphenol for NH4+-N in piggery wastewater was 19.3 mg·g-1 which was 3.3 times higher than that of zeolite and slightly better than that of cation exchange resin. Therefore, the natural plant polyphenols possess a high adsorption capacity for NH4+-N and can be easily precipitated by ferric sulfate, which is potentially a novel approach to remove NH4+-N from wastewater. |
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