| 李文姣,张丽,刘东方,黄文力,魏孝承,王振东.不同钝化剂对猪粪中重金属Cu Zn Mn钝化效果的研究[J].农业环境科学学报,2018,37(6):1262-1269. |
| 不同钝化剂对猪粪中重金属Cu Zn Mn钝化效果的研究 |
| Impact of different passivating agents on heavy metals Cu, Zn and Mn in pig manure |
| 投稿时间：2017-10-21 |
| DOI：10.11654/jaes.2017-1433 |
| 中文关键词: 硫化钠 凹凸棒土 粉煤灰 熟石灰 猪粪 重金属 钝化 |
| 英文关键词: sodium sulfide attapulgite fly ash hydrated lime pig manure heavy metals passivation |
| 基金项目:国家重点基础研究发展计划项目（2016YFD0801002-01）；天津市科技支撑计划项目（201601190） |
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| 摘要点击次数: 1928 |
| 全文下载次数: 2050 |
| 中文摘要: |
| 为降低猪粪中重金属的生物可利用性，探讨了硫化钠、凹凸棒土、粉煤灰、熟石灰4种钝化剂对猪粪中重金属钝化效果的影响。钝化28 d的实验结果表明，在4种钝化剂投加量分别为1%、10%、10%、10%的情况下：硫化钠对猪粪中Cu的钝化率可达86.84%，对Zn的钝化率为65.64%；凹凸棒土对Cu的钝化率为87.86%，对Zn的钝化率为32.82%；粉煤灰对Cu的钝化率为74.70%，但对猪粪中的Zn是活化作用；熟石灰对Zn的钝化率为26.59%，但对猪粪中的Cu是活化作用。在这4种钝化剂中，硫化钠、凹凸棒土和粉煤灰对猪粪中Mn起到一定的钝化作用，熟石灰则是活化猪粪中的Mn。综上所述，硫化钠和凹凸棒土作为钝化猪粪中重金属的添加剂，可以有效降低猪粪中重金属的生物可利用性。 |
| 英文摘要: |
| The effects of sodium sulfide, attapulgite, fly ash and hydrated lime on the passivation of heavy metals in pig manure were investigated. The results showed that after 28 days of passivation, with a 1%(m/m) addition of sodium sulfide, the passivation rates of Cu and Zn were 86.84% and 65.64%, respectively. With a 10%(m/m) addition of attapulgite, the passivation rates of Cu and Zn were 87.86% and 32.82%, respectively. With a 10% addition of fly ash, 74.70% of Cu was immobilized in the treatment, but no passivating effect on Zn was observed. On the contrary, a 10%(m/m) addition of hydrated lime achieved a passivation rate of 26.59% on Zn, but activated Cu. Among these four passivating agents, sodium sulfide, attapulgite, and fly ash displayed a certain passivation effect on Mn in pig manure, but hydrated lime showed the opposite effect. Therefore, sodium sulfide and attapulgite can be used as passivating agents to effectively reduce the bioavailability of heavy metals in pig manure. |
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