Co-based metal-organic frameworks for enhanced nickel adsorption and its impact on nitrifying microbial activity

被引：0

作者：

Hernández-Martínez, Gabriel R. ^{[1
,3
]}

Oceguera-Vargas, Ismael ^{[1
,2
,4
]}

Rincón, Susana ^{[2
]}

Houbron, Eric ^{[3
]}

Zepeda, Alejandro ^{[1
]}

机构：

[1] Facultad de Ingeniería Química, Universidad Autónoma de Yucatán, Campus de Ingenierías y Ciencias Exactas, Periférico Norte Km 33.5, Yucatán, Mérida,97203, Mexico

[2] Departamento de Química y Bioquímica, Tecnológico Nacional de México/I. T Mérida S/N, Yucatán, Mérida,7360, Mexico

[3] Facultad de Ciencias Químicas, Universidad Veracruzana, Prolongación Avenida Oriente 6 1009, Rafael Alvarado, Orizaba, Veracruz,94340, Mexico

[4] Unidad de Química Sisal, Facultad de Química, Universidad Nacional Autónoma de México, Puerto de Abrigo Sisal, Yucatán, Sisal,97355, Mexico

来源：

Environmental Science and Pollution Research | 2024年 / 31卷 / 43期

关键词：

Cobalt - Heavy metals - Kinetic parameters;

D O I：

10.1007/s11356-024-34761-1

中图分类号：

学科分类号：

摘要：

Abstract: The release of nickel Ni(II) into aquatic environments is of great concern because of environmental and health issues. Metal-organic frameworks (MOFs) are one of the most promising technologies for removing heavy metals from water. In this work, an octahedral Co-based MOF (Co-MOF) was synthesized with a high Ni(II) removal capacity (qmax of 1534.09 ± 45.49 mg g−1) in aqueous media. For the first time, the effect of Co-MOF alone and in co-exposure with Ni(II) on nitrifying microbial consortium was assessed using dynamic microrespirometry. A single concentration of Co-MOF had no significant effects on nitrifying microbial consortium, while the concentration of Ni(II) exerted non-competitive inhibition on the nitrifying microbial consortium with an IC50 of 1.67 ± 0.03 mg L−1. In addition, the theoretical speciation analysis showed a decrease of 40% of IC50 when the free Ni(II) concentration was considered. Co-exposure of Co-MOF and Ni(II) during the nitrifying process allowed us to conclude that Co-MOF is an effective adsorbent for Ni(II) and can be used to mitigate the inhibitory effects of nickel on nitrifying microbial consortia, which is crucial for maintaining the good operation of wastewater treatment and balance of nitrogen cycle. Graphical Abstract: (Figure presented.) © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

引用

页码：55239 / 55250

页数：11