Adsorption and recovery nutrient from the tail liquid of biohydrogen production by zeolite

Xiaokai Zhou (), Cunjie Li (), Chaoyang Lu (), Yang Zhang (), Yameng Li (), Huan Zhang (), Quanguo Zhang () and Yanyan Jing ()
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Xiaokai Zhou: Henan Agricultural University
Cunjie Li: Henan Agricultural University
Chaoyang Lu: Henan Agricultural University
Yang Zhang: Henan Agricultural University
Yameng Li: Henan Agricultural University
Huan Zhang: Henan Agricultural University
Quanguo Zhang: Henan Agricultural University
Yanyan Jing: Henan Agricultural University

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2024, vol. 26, issue 11, No 69, 28859-28875

Abstract: Abstract In order to reduce environmental pollution caused by biohydrogen production tailing liquid (BHPTL) discharge and realize waste reuse of BHPTL, zeolite was selected as adsorbent to recycle nutrients contained in BHPTL, and the adsorption and desorption characteristics of zeolite acting on BHPTL were investigated. The results showed that the amount of zeolite added had a strong effect on the adsorption effect of NH4+ and K+, and the reaction temperature and solution pH had a weak effect on the adsorption effect of NH4+. The adsorption (desorption) time had a significant effect on the adsorption (desorption) process of K+, but had less effect on the adsorption and desorption process of NH4+. The maximum adsorption rates of NH4+ and K+ in zeolite were 79.05% and 66.33%, corresponding to desorption quantities of 0.616 mg/g and 4.00 mg/g. In addition, the equilibrium desorption rates of NH4+ and K+ in zeolite were 58.49% and 35.84%, corresponding to desorption quantities of 0.38 mg/g and 1.56 mg/g. The adsorption process of zeolites conforms to the quasi-secondary kinetic model and is dominated by chemisorption processes. This study provides a theoretical basis for the recovery of nutrients from BHPTL to produce useful substances, such as fertilizers and soil conditions.

Keywords: Zeolite; Adsorption; Desorption; Biohydrogen production tailing liquid (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s10668-023-03845-2

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