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首页> 外文期刊>Journal of Hazardous Materials >Ammonium exchange in leakage waters of waste dumps using natural zeolite from the Krapina region, Croatia
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Ammonium exchange in leakage waters of waste dumps using natural zeolite from the Krapina region, Croatia

机译：使用来自克罗地亚Krapina地区的天然沸石在废料堆的渗漏水中进行铵交换

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The paper presents the results of investigating the treatment of leakage waters from waste dumps using activated carbon and natural zeolite clinoptilolite, known as a very selective and efficient cation exchanger for ammonium ions. The results are presented of chemical and physical analyses of leakage waters characterized by a high content of ammonium (820mgL~(-1)) and organic pollutants (1033 mgL~(-1) C). Physical and chemical characteristics of zeolite and the exchange of ammonium ions in model and real solutions were determined in laboratory trials. Treatment of leakage water with 0.04-2.5% (w/w) activated carbon (Norit 0.8 Supra) led to a reduction of total organic carbon in leakage water from 1033 to 510mgL~(-1). Pretreatment of leakage water with activated carbon did not improve the exchange of ammonium ions on zeolite. Without pretreatment of leakage water, the exchange of ammonium ions amounted to 4.2 mg NH_4~+/g zeolite. Addition of activated carbon, regardless of its mass, increased the exchange of ammonium ions to only 5.7 mg NH_4~+/g zeolite. In the model solution of an equal concentration of ammonium as the real solution, 17.70mg NH_4~+/g zeolite was exchanged. Organic pollutants that were not eliminated by activated carbon (most probably components of natural origin) adsorbed to zeolite and prevented the exchange of NH_4~+ ions, which was also reduced due to the presence of K~+ and Ca~(2+) ions.
机译：本文介绍了使用活性炭和天然沸石斜发沸石（称为铵离子的一种非常选择性和高效的阳离子交换剂）处理废物场中渗漏水的研究结果。给出了对泄漏水进行化学和物理分析的结果，这些泄漏水的特点是铵（820mgL〜（-1））和有机污染物（1033 mgL〜（-1）C）高。在实验室试验中确定了沸石的理化特性以及模型溶液和实际溶液中铵离子的交换。用0.04-2.5％（w / w）活性炭（Norit 0.8 Supra）处理渗漏水可将渗漏水中的总有机碳从1033降至510mgL〜（-1）。用活性炭预处理渗漏水并不能改善沸石上铵离子的交换。如果不对泄漏水进行预处理，则铵离子的交换量为4.2 mg NH_4〜+ / g沸石。无论活性炭的质量如何，添加活性炭都会使铵离子的交换增加到仅5.7 mg NH_4〜+ / g沸石。在与实际浓度相同的铵浓度的模型溶液中，交换了17.70mg NH_4〜+ / g沸石。未被活性炭（最可能是自然来源的成分）消除的有机污染物吸附到沸石上，阻止了NH_4〜+离子的交换，由于存在K〜+和Ca〜（2+）离子，NH_4〜+离子的交换也减少了。

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