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Fe(Ⅲ)-humate complexes from Megalopolis peaty lignite: A novel eco-friendly fertilizer

机译：大都市豆褐煤中的Fe（Ⅲ）-腐殖酸盐配合物：一种新型的生态肥料

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摘要

Fe(Ⅲ)-humate complexes were synthesized from Greek peaty lignite of the Megalopolis Basin. The preparation was carried out under mild and low-energy conditions producing a biodegradable, eco-friendly and effective material to substitute the synthetic chelates Fe-EDDHA, Fe-EDTA and Fe-DTPA. Due to both the existing expanded configuration of the humic substances (that make binding sites accessible to the metal ions) and the ionization of functional groups, alkaline environment facilitates the association between Fe(Ⅲ) ions and the lignite-derived humic substances. UV-vis and 1R spectra revealed coordination of the metal ions with the carboxylic and phenolic groups of the oxygen-rich humic substances. Fe(Ⅲ)-humate complexes were proved stable in a wide pH range similar to Fe-EDDHA synthetic chelates. Furthermore, the presence of K~+ and humic matter increases the agronomic value of this material establishing alternative applications for Megalopolis peaty lignite.
机译：Fe（Ⅲ）-腐植酸盐配合物是从大城市盆地的希腊粉煤褐煤中合成的。该制备在温和且低能量的条件下进行，产生了可生物降解，生态友好和有效的材料，以替代合成螯合物Fe-EDDHA，Fe-EDTA和Fe-DTPA。由于腐殖质的现有扩展构型（使结合位点可接近金属离子）和官能团的电离，碱性环境促进了Fe（Ⅲ）离子与褐煤衍生的腐殖质之间的缔合。紫外可见光谱和1R光谱表明，金属离子与富氧腐殖质的羧基和酚基配位。 Fe（Ⅲ）-腐植酸盐配合物在与Fe-EDDHA合成螯合物相似的宽pH范围内被证明是稳定的。此外，钾离子和腐殖质的存在增加了这种材料的农艺价值，从而建立了大都市豆褐煤的替代应用。

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  • 来源
    《Fuel》 |2010年第7期|p.1480-1484|共5页
  • 作者

    Konstantinos Chassapis; Maria Roulia; Georgia Nika;

  • 作者单位

    Inorganic Chemistry Laboratory, Department of Chemistry, University of Athens, Panepistimiopolis, 157 71 Athens, Greece;

    rnInorganic Chemistry Laboratory, Department of Chemistry, University of Athens, Panepistimiopolis, 157 71 Athens, Greece;

    rnInorganic Chemistry Laboratory, Department of Chemistry, University of Athens, Panepistimiopolis, 157 71 Athens, Greece;

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

    megalopolis; lignite; humic substances; Fe-humic complexes; fertilizer;

    机译：大都市褐煤;腐殖质;铁腐殖质配合物;肥料;

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