• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >Biosorption of cobalt(II)and nickel(II)by seaweeds:batch and column studies
【24h】

Biosorption of cobalt(II)and nickel(II)by seaweeds:batch and column studies

机译：海藻对钴（II）和镍（II）的生物吸附：分批和色谱柱研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Six species of green,brown and red seaweed were compared for their biosorption abilities in the uptake of cobalt(II)and nickel(II)from aqueous solutions containing 100mg/l initial metal concentrations.Batch experiments showed that the pH influenced the metal uptake of all seaweeds examined.In general,brown seaweeds were performed well with Sargassum wightii outperformed all seaweeds with an uptake of 20.63 mg Co(II)/g at pH 4.5 and 18.58 nig Ni(II)/g at pH 4.Batch desorption and regeneration experiments revealed that 0.1 M CaCl2(in HC1)performed well in eluting cobalt(II)and nickel(II)and caused least damage to S.wightii biomass.The ability of S.wightii to biosorb cobalt(II)and nickel(II)in a packed column was investigated as well.The design parameters such as bed height and flow rate affected the biosorption characteristics of the biomass.The column was regenerated using 0.1 M CaCl2(in HC1)solution and sorption-desorption studies were carried out for five cycles.During regeneration cycles,a decreased breakthrough time and an increased mass transfer zone were observed as the cycles proceeded.However,S.wightii maintained a relatively consistent biosorption capacity of approximately 50 mg Co/g and 39 mg Ni/g during regeneration cycles.
机译：比较了六种绿，棕和红海藻对初始金属浓度为100mg / l的水溶液中钴（II）和镍（II）吸收的生物吸附能力。分批实验表明，pH影响金属对海藻的吸收。总的来说，褐藻表现良好，Sargassum wightii的表现优于所有海藻，在pH 4.5时吸收20.63 mg Co（II）/ g，在pH 4时吸收18.58 nig Ni（II）/ g批次解吸和再生实验表明，0.1 M CaCl2（在HCl中）在洗脱钴（II）和镍（II）时表现良好，对S.wightii生物量的损害最小。S.wightii对钴（II）和镍（II）的生物吸附能力。设计参数如床高和流速影响生物质的生物吸附特性。用0.1 M CaCl2（在HCl中）溶液对该柱进行再生，并进行了五个吸附-解吸研究循环期间因此，随着循环的进行，观察到了减少的穿透时间和增加的传质区。但是，在再生循环中，怀氏链球菌保持了相对稳定的生物吸附能力，约为50 mg Co / g和39 mg Ni / g。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号