沸石吸附制氢尾液中NH4+和K+的动力学与热力学分析

周小楷; 张凯; 荆艳艳; 张全国; 路朝阳

doi:10.19912/j.0254-0096.tynxb.2025-0157

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (6) : 601-606. DOI: 10.19912/j.0254-0096.tynxb.2025-0157

沸石吸附制氢尾液中NH₄⁺和K⁺的动力学与热力学分析

周小楷, 张凯, 荆艳艳, 张全国, 路朝阳

作者信息 +

KINETIC AND THERMODYNAMIC ANALYSIS OF NH₄⁺ AND K⁺ IN TAILING LIQUID OF ZEOLITE ADSORPTION HYDROGEN PRODUCTION

Zhou Xiaokai, Zhang Kai, Jing Yanyan, Zhang Quanguo, Lu Chaoyang

Author information +

文章历史 +

摘要

为实现光发酵制氢尾液营养物质的回收利用,以天然沸石为吸附材料,采用动力学和热力学分析方法,研究沸石吸附光发酵制氢尾液中NH₄⁺和K⁺的能力。研究发现,在吸附时间和温度分别为2 h、35 ℃时,沸石对NH₄⁺的吸附能力较强,吸附量为1.82 mg/g;当吸附时间为3 h、温度为45 ℃时,K⁺在沸石上的吸附最佳,为7.11 mg/g。准二级动力学更适合描述NH₄⁺和K⁺在沸石上的吸附,且K⁺在沸石上的吸附是非自发的吸热熵增反应,而NH₄⁺的吸附是非自发的放热熵减反应。

Abstract

In order to achieve the recycling of nutrients in photo-fermentation hydrogen production tailing liquid, the adsorption capacity of zeolite on NH₄⁺ and K⁺ in photo-fermentation hydrogen production tailing liquid was investigated using natural zeolite as adsorbent and kinetic and thermodynamic analyses were carried out. It is found that the adsorption of zeolite on NH₄⁺ and K⁺ in photo-fermentation hydrogen production tailing liquid exhibites a tendency of accelerated adsorption, then gradually reaches balance, which is attained at 2 h and 3 h of adsorption, respectively. When adsorption time is 2h and adsorption temperature is 35 ℃, zeolite demonstrates stronger adsorption capacity for NH₄⁺ with an adsorption of 1.82 mg/g. When adsorption time is 3 h and adsorption temperature is 45 ℃, zeolite exhibites its maximum adsorption capacity for K⁺, reaching 7.11 mg/g. The quasi-secondary kinetic model provides a superior description for the adsorption process. The adsorption process of zeolite on NH₄⁺ and K⁺ in the tailing liquid of photo-fermentation hydrogen production is non-spontaneous. The adsorption of NH₄⁺ by zeolite is characterised as an exothermic entropy reduction reaction, while the adsorption of K⁺ is identified as an adsorptive entropy increase reaction.

导出引用

周小楷, 张凯, 荆艳艳, 张全国, 路朝阳. 沸石吸附制氢尾液中NH₄⁺和K⁺的动力学与热力学分析[J]. 太阳能学报. 2026, 47(6): 601-606 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0157

Zhou Xiaokai, Zhang Kai, Jing Yanyan, Zhang Quanguo, Lu Chaoyang. KINETIC AND THERMODYNAMIC ANALYSIS OF NH₄⁺ AND K⁺ IN TAILING LIQUID OF ZEOLITE ADSORPTION HYDROGEN PRODUCTION[J]. Acta Energiae Solaris Sinica. 2026, 47(6): 601-606 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0157

中图分类号： X71

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