首页> 外文期刊>Journal of Environmental Science and Health. A >LEACHING OF NITROGEN FORMS, CATIONS, AND METALS AS INFLUENCED BY COMPOST AMENDMENT TO A CANDLER FINE SAND
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LEACHING OF NITROGEN FORMS, CATIONS, AND METALS AS INFLUENCED BY COMPOST AMENDMENT TO A CANDLER FINE SAND

机译:修改对烛细砂的氮形态,阳离子和金属的浸出

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摘要

Leachability of nitrogen forms, cations, and metals was evaluated in an entisol anended with compost. In this study, sugarcane filter cake (SF) and municipal solid waste plus biosolids (MSW+BSD) compost were applied to a Candler fine sand (hyperthermic, uncoated Typic Quartzpsamments) at rates equivalent to 200 kg N ha~-1 (on air-dry weight basis) and intermittently leached with deionized water in 220 mL fractions for a total of 1,760 mL. The concentrations of No_3-N in leachate were below 10 mg L~-1 (maximum contaminant limit of NO_3-N; drinking water quality standards) for both compost sources. Leacing of most elements was greater from the soil amended with SF as compared to that with MSW+BSD. The highest concentrations of most elements (except P, Fe and Al) were observed in the second or third leachate fractions. The cumulative amount of NO_3-N recovered in 1760 mL leachate accounted for 2.9 and 2.7/100 of total N applied using SF and MSW獴SD, respectively.
机译:氮形式,阳离子和金属的可浸性在堆肥和防腐剂中进行了评估。在这项研究中,将甘蔗滤饼(SF)和城市固体废物加生物固体(MSW + BSD)堆肥以相当于200千克N ha〜-1的量(风干)施用于Candler细砂(高温,无涂层的Typic Quartzpsamments)上。重量),并用去离子水间歇性浸出220 mL馏分,总计1760 mL。两种堆肥来源的渗滤液中No_3-N的浓度均低于10 mg L〜-1(NO_3-N的最大污染物限值;饮用水水质标准)。与MSW + BSD相比,SF改良土壤中大多数元素的浸出量更大。在第二或第三浸出液馏分中观察到大多数元素(P,Fe和Al除外)的最高浓度。在1760 mL渗滤液中回收的NO_3-N累积量分别占使用SF和MSW獴SD施用的总N的2.9和2.7 / 100。

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