• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISIJ international >Fractionation of Phosphorus in Steelmaking Slags and Aquatic Particulate Materials Using a Sequential Extraction Technique
【24h】

Fractionation of Phosphorus in Steelmaking Slags and Aquatic Particulate Materials Using a Sequential Extraction Technique

机译：顺序萃取技术分离炼钢炉渣和水颗粒物中的磷

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

We measured the concentrations and chemical forms of phosphorus (P), an essential nutrient in marine ecosystems, in steelmaking slag (Slag) to determine whether use of Slags as a basal medium for artificial tidal flats and seagrass beds was an environmentally acceptable option for the reuse and recycling of Slags. We tested six Slag samples, including dephosphorization slags and converter slags. The total P concentrations were one order of magnitude higher in the Slags than in the aquatic particulate materials. We used a sequential extraction technique in which the strength of the extractants was increased step-wise in order to separate the P pools in the Slags into four fractions; exchangeable P, Fe (Ⅲ)-bound P, authigenic P-like component, and detrital P-like component. We considered P contained in the first two fractions to be easily mobilized under the conditions found in some marine environments, such as the highly reduced zones of subsurface sediments. The mobile P accounted for 55-660 μmol P g~(-1) and for 56-81% of the total P in the Slags. The results strongly suggested that Slags have substantial potential to function as a P source that could sustain biological productivity in artificial tidal flat and seagrass bed ecosystems. On the other hand, Slags also have the potential to mitigate intense and rapid release of P from basal media, because mechanisms exist for adsorption and co-precipitation of phosphate with major components of Slags, including iron, calcium, and magnesium.
机译：我们测量了炼钢矿渣（Slag）中海洋生态系统中一种重要养分磷（P）的浓度和化学形式，以确定使用矿渣作为人工潮滩和海草床的基础介质是否是环境可接受的选择。炉渣的再利用和回收。我们测试了六个炉渣样品，包括脱磷炉渣和转炉炉渣。炉渣中的总P浓度比水生颗粒材料中的P高一个数量级。我们使用了一种顺序萃取技术，其中萃取剂的强度逐步提高，以便将矿渣中的P池分成四个部分；可交换的P，Fe（Ⅲ）结合的P，自生P样组分和碎屑P样组分。我们认为，在某些海洋环境中，例如地下沉积物高度减少的区域中，在前两个馏分中所含的P易于迁移。流动态磷占矿渣中总磷的55-660μmolP g〜（-1），占总磷的56-81％。结果强烈表明，矿渣具有作为磷源的巨大潜力，可以维持人工潮滩和海草床生态系统的生物生产力。另一方面，炉渣还具有缓解磷从基础介质中快速释放的潜力，因为存在吸附和共沉淀磷酸盐与炉渣的主要成分（包括铁，钙和镁）的机制。

著录项

  • 来源
    《ISIJ international》 |2015年第1期|183-189|共7页
  • 作者

    Ayumi TSUKASAKI; Masahiro SUZUMURA; Wataru NISHIJIMA;

  • 作者单位

    Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba West, 16-1 Onogawa, Tsukuba, Ibaraki, 305-8569 Japan;

    Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba West, 16-1 Onogawa, Tsukuba, Ibaraki, 305-8569 Japan;

    Environmental Research and Management Center, Hiroshima University, 1-5-3, Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8513 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; phosphorus; sequential extraction method; tidal flats; eelgrass beds;

    机译：炼钢渣磷;顺序提取法滩涂;鳗草床;

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