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首页> 外文期刊>ISIJ international >The Effect of Humic Substances on Iron Elution in the Method of Restoration of Seaweed Beds Using Steelmaking Slag
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The Effect of Humic Substances on Iron Elution in the Method of Restoration of Seaweed Beds Using Steelmaking Slag

机译：炼钢渣还原海藻床方法中腐殖质对铁溶出的影响

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摘要

The transformation of formally productive coastal areas into barren ground is a serious problem in Japan and worldwide. Although several factors have been proposed for this phenomenon, this study especially focused on the effect of lack of dissolved iron in limiting the growth of seaweed beds. A method has been developed where a mixture of steelmaking slag and compost including humic substances, is supplied to seawater in order to stimulate seaweed bed restoration. This method increases dissolved iron concentration, since complexes called iron-humates are formed from the iron in steelmaking slag and the humic substances in compost. In this study, an evaluation was made whether humic substances increases dissolved iron concentration. A laboratory based iron elution test using seawater was attempted. Three kinds of samples were evaluated for iron elution namely, steelmaking slag in isolation, compost in isolation, and a mixture of steelmaking slag and compost. The change in dissolved iron concentration using each method was monitored over time. We found that the iron elution rate was more rapid within the mixture of steelmaking slag and compost than that in the steelmaking slag. Results of the study indicated that the structural characteristics of the humic substances were related to the increased iron elution from steelmaking slag. The method of using a mixture of steelmaking slag and compost was more effective not only for increasing dissolved iron concentration within seawater, but also for extending the life time of Fe elution.
机译：在日本乃至世界范围内，将正式生产的沿海地区转变为贫瘠的土地是一个严重的问题。尽管已针对此现象提出了几个因素，但本研究尤其关注缺乏溶解铁的物质对限制海藻床生长的影响。已经开发出一种方法，其中将炼钢炉渣和包括腐殖质的堆肥的混合物供应到海水中，以刺激海藻床的恢复。这种方法提高了溶解铁的浓度，因为炼钢炉渣中的铁和堆肥中的腐殖质形成了称为铁腐殖酸盐的络合物。在这项研究中，评估了腐殖质是否增加了溶解铁的浓度。尝试了基于实验室的使用海水的铁洗脱测试。评价了三种样品的铁溶出度，分别是炼钢渣，分离堆肥，炼钢渣和堆肥的混合物。随时间监测使用每种方法的溶解铁浓度的变化。我们发现，炼钢渣和堆肥的混合物中铁的溶出速率比炼钢渣中的铁溶出速率更快。研究结果表明，腐殖质的结构特征与炼钢渣中铁的溶出增加有关。使用炼钢炉渣和堆肥的混合物的方法不仅对增加海水中的溶解铁浓度更有效，而且对于延长Fe洗脱的寿命更有效。

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  • 来源
    《ISIJ international》 |2012年第10期|p.1909-1913|共5页
  • 作者

    Mitsuo YAMAMOTO; Masami FUKUSHIMA; Dan LIU;

  • 作者单位

    Graduate School of Frontier Sciences, Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8564 Japan;

    Graduate School of Engineering, Hokkaido University, Kita-13, Nishi-8, Sapporo, Hokkaido, 068-8628 Japan;

    Ariake National College of Technology, 150 Higashihagio-Machi,Omuta,Fukuoka, 836-8585 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    steelmaking slag; humic substances; seaweed bed restoration; barren ground;

    机译：炼钢渣腐殖质;海藻床修复贫瘠的土地;

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