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首页> 外文期刊>International journal of soil science >Effects of Ammonium and Iranian Natural Zeolite on Potassium Adsorption and Desorption Kinetics in the Loess Soil*
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Effects of Ammonium and Iranian Natural Zeolite on Potassium Adsorption and Desorption Kinetics in the Loess Soil*

机译：铵和伊朗天然沸石对黄土土壤钾素吸附和解吸动力学的影响*

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Information about the adsorption and desorption kinetics of potassium and the consequent alterations with zeolite additions are limited in Golestan Province loess soils with illite dominance in the clay fraction. The kinetics of potassium adsorption and desorption with different KCl concentrations (0, 40, 60, 80, 110 and 140 mg L~(-1)) and KCI+NH_4CI concentrations (K80,N60; K80,N120; K60,N60; K110, N120; K80, N90 and Kl 10, N90 mg L~(-1)) on the soil, the zeolite and their incorporation (within 2 and 1800 h) were investigated with this research using batch method. Potassium adsorption and desorption was initially fast (first 48 h) but continued with low speed (after 48 h) until the end of the experiment. Results shown increasing of K~+ concentration increased rate of adsorption and desorption in soil, zeolite and their incorporation and zeolite increased adsorption and decreased desorption rate by incorporation with soil. Ammonium presence decreased potassium adsorption and it increased potassiumdesorption. K/NH4 desorption rate did not follow exactly KWl4 adsorption ratio for all treatments. The kinetic equations used to estimate data were zero order, first order, simple Elovich, parabolic diffusion and power ftinction. The Elovich model described the adsorption and desorption processes on soil and soil with zeolit (0.88
机译：在高丽斯坦省的黄土土壤中，钾的吸附和解吸动力学以及随之而来的沸石改变的信息是有限的，在粘土组分中伊利石占主导地位。钾在KCl（0，40，60，80，110和140 mg L〜（-1））和KCI + NH_4Cl（K80，N60; K80，N120; K60，N60; K110）浓度下吸附和解吸的动力学本研究采用分批法研究了土壤中沸石，N120; K80，N90和Kl 10，N90 mg L〜（-1）），沸石及其掺入（在2和1800 h内）。钾的吸附和解吸开始时很快（前48小时），但继续低速（48小时后），直到实验结束。结果表明，钾离子浓度的增加，增加了土壤，沸石及其结合的吸附和解吸速率，沸石与土壤的结合增加了吸附，降低了解吸速率。铵的存在降低了钾的吸附并增加了钾的解吸。在所有处理中，K / NH4的解吸速率均未完全遵循KW14的吸附率。用于估计数据的动力学方程为零阶，一阶，简单Elovich，抛物线扩散和幂函数。 Elovich模型描述了在沸石上土壤和土壤的吸附和解吸过程（0.88

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