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Treatment of Fe-containing Acid Mine Waters in Fixed Bed Adsorption Column with Calcite Side-Stone

机译：方解石侧渣处理固定床吸附塔中含铁酸性矿井水

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摘要

The acid mining drainage is considered the most significant environmental pollution problem around the world for the extensive formation acidic leachates containing heavy metals. Adsorption is widely used methods in water treatment due to it easy operation and the availability of a wide variety of commercial adsorbent (low cost). The primary goal of this thesis was to investigate the efficiency of neutralizing agents, CaCO3 and CaSiO3, and metal adsorption materials with unmodified limestone from Company Nordkalk Oy. In addition to this, the side materials of limestone mining were tested for iron adsorption from acidic model solution. This study was executed at Lappeenranta University of Technology, Finland. The work utilised fixed-bed adsorption column as the main equipment and large fluidized column. Atomic absorption spectroscopy (AAS) and x-ray diffraction (XRD) was used to determine ferric removal and the composition of material respectively. The results suggest a high potential for the studied materials to be used a low cost adsorbents in acid mine drainage treatment. From the two studied adsorbents, the FS material was more suitable than the Gotland material. Based on the findings, it is recommended that further studies might include detailed analysis of Gotland materials.
机译：对于含重金属的广泛形成的酸性渗滤液，酸性开采排水被认为是世界上最严重的环境污染问题。吸附由于易于操作且可使用多种商业吸附剂（低成本）而在水处理中被广泛使用。本文的主要目的是研究Nordkalk Oy公司的中和剂CaCO3和CaSiO3以及具有未改性石灰石的金属吸附材料的效率。除此之外，还测试了石灰石开采的副材料对酸性模型溶液中铁的吸附。这项研究是在芬兰拉彭兰塔理工大学进行的。该工作以固定床吸附塔为主要设备，大型流化塔为主要设备。原子吸收光谱法（AAS）和X射线衍射（XRD）分别用于测定铁的去除和材料的成分。结果表明所研究的材料在酸性矿山排水处理中用作低成本吸附剂的潜力很大。从两种研究的吸附剂中，FS材料比哥特兰材料更合适。基于这些发现，建议进一步的研究可能包括对哥特兰岛材料的详细分析。

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    El Oumari Ghali;

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