芦苇根茎和根对造纸废水中铜的吸收

发布时间：2018-05-27 09:21

本文选题：芦苇 + 造纸废水　；参考：《湿地科学》2017年05期

【摘要】：为了研究芦苇(Phragmites australis)根茎和根对造纸废水中铜的吸收能力,于2015年4月20日~10月22日,以辽河口湿地灌溉造纸废水的芦苇根茎和根为研究对象,在芦苇不同生长期,分别灌溉化学需氧量质量浓度为50 mg/L、175 mg/L和300 mg/L的造纸废水,测定芦苇根茎和根的生物量,以及重金属铜的含量。结果表明,在芦苇各个生长时期,灌溉不同浓度造纸废水后,芦苇根茎的生物量都高于根,当废水中化学需氧量质量浓度为175 mg/L时,根茎与根的生物量差异最显著;根中单位质量铜含量和总铜含量都高于根茎;当废水中化学需氧量质量浓度为175 mg/L时,芦苇根中的单位质量铜含量在快速生长期最大,为104.03 mg/kg,芦苇根茎中的铜含量在成熟期最大,为152.32 kg/km~2。
[Abstract]:In order to study the absorption of copper in papermaking wastewater by rhizomes and roots of Phragmites australis, the rhizomes and roots of Reed from Liaohekou wetland irrigation wastewater were studied from April 20 to October 22, 2015. The biomass of rhizome and root of Reed and the content of heavy metal copper were determined by irrigating the wastewater containing 50 mg / L ~ (175 mg/L) and 300 mg/L of chemical oxygen demand respectively. The results showed that the biomass of Reed rhizomes was higher than that of roots after irrigating different concentrations of papermaking wastewater at different growth stages. When the mass concentration of chemical oxygen demand in wastewater was 175 mg/L, the difference between rhizome and root biomass was most significant. The copper content per unit mass and total copper content in the root were higher than those in the rhizome, and when the mass concentration of chemical oxygen demand in the wastewater was 175 mg/L, the copper content per unit mass in the Reed root was the highest in the rapid growing period. At 104.03 mg / kg, the copper content in Reed rhizomes was the highest at maturity, 152.32 kg / kg 路kg ~ (2) 路kg ~ (-1) 路kg ~ (-1).
【作者单位】：沈阳农业大学;
【基金】：国家自然科学基金项目(31570706、31200392) 国家重点研发计划项目(2016YFC0500408)资助
【分类号】：X793

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