WASTEWATER TREATMENT AT THE NIAMEY GENERAL REFERENCE HOSPITAL (HGR) USING ZINC- AND ALUMINUM-BASED LAYERED DOUBLE HYDROXIDES (Zn-Al-LDH)

I. HIMA Halidou; HAMIDOU HAROUNA Ibrahim; AMADOU KIARI Mahamane Nassirou; IBRO DOUKA AbdoulKader; ADAMOU WAKOU Sallah; NATATOU Ibrahim

doi:10.30574/wjarr.2026.31.3.2398

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WASTEWATER TREATMENT AT THE NIAMEY GENERAL REFERENCE HOSPITAL (HGR) USING ZINC- AND ALUMINUM-BASED LAYERED DOUBLE HYDROXIDES (Zn-Al-LDH)

I. HIMA Halidou ¹, HAMIDOU HAROUNA Ibrahim ¹, AMADOU KIARI Mahamane Nassirou ^{1, 2, *}, IBRO DOUKA AbdoulKader ³, ADAMOU WAKOU Sallah ⁴and NATATOU Ibrahim ¹

¹Department of Chemistry, Faculty of Science and Technology, Materials/ Water and Environment Laboratory/ Abdou Moumouni University, B. P: 10662 Niamey, Niger.
²Laboratory of Industrial Processes of Synthesis, Environment and New Energies (LAPISEN), National Polytechnic Institute Félix Houphouët-Boigny; BP 1093 Yamoussoukro.
³State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology.
⁴Service Hygiène Assainissement et de l’Environnement, Hôpital Général de Référence de Niamey (HGR), BP : 12674, Niger.
* Corresponding Author

ORCID Details
Mahamane Nassirou AMADOU KIARI: https://orcid.org/0000-0002-9956-4425

Research Article

World Journal of Advanced Research and Reviews, 2026, 31(03), 1902–1908

Article DOI: 10.30574/wjarr.2026.31.3.2398

DOI url: https://doi.org/10.30574/wjarr.2026.31.3.2398

Publication history

Received on 19 August 2026; revised on 24 September 2026; accepted on 26 September 2026

Abstract

This study is part of the effort to combat environmental pollution by removing pollutants. The objective of this study was to use zinc (Zn)- and aluminum (Al)-based double lamellar hydroxides (HDLs) to treat wastewater by adsorbing contaminants generated by the activities of the Niamey General Reference Hospital (HGR). The experimental results obtained under operating conditions of 0.7 g of double-layered hydroxide (Zn-Al-HDL), a 25 mL volume of wastewater, at room temperature, and a contact time of 24 hours show that the removal efficiencies of micropollutants, as measured by conductivity, total dissolved solids (TDS), and chemical oxygen demand (COD) are 84.85%, 82.02%, and 6.86 mg/L, respectively.

Keywords

Wastewater, General Reference Hospital, Niamey, Zn-Al-HDL, Adsorption.

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I. HIMA Halidou, HAMIDOU HAROUNA Ibrahim, AMADOU KIARI Mahamane Nassirou, IBRO DOUKA AbdoulKader, ADAMOU WAKOU Sallah and NATATOU Ibrahim. WASTEWATER TREATMENT AT THE NIAMEY GENERAL REFERENCE HOSPITAL (HGR) USING ZINC- AND ALUMINUM-BASED LAYERED DOUBLE HYDROXIDES (Zn-Al-LDH). World Journal of Advanced Research and Reviews, 2026, 31(03), 1902–1908. Article DOI: https://doi.org/10.30574/wjarr.2026.31.3.2398

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WASTEWATER TREATMENT AT THE NIAMEY GENERAL REFERENCE HOSPITAL (HGR) USING ZINC- AND ALUMINUM-BASED LAYERED DOUBLE HYDROXIDES (Zn-Al-LDH)

I. HIMA Halidou ¹, HAMIDOU HAROUNA Ibrahim ¹, AMADOU KIARI Mahamane Nassirou ^{1, 2, *}, IBRO DOUKA AbdoulKader ³, ADAMOU WAKOU Sallah ⁴and NATATOU Ibrahim ¹

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WASTEWATER TREATMENT AT THE NIAMEY GENERAL REFERENCE HOSPITAL (HGR) USING ZINC- AND ALUMINUM-BASED LAYERED DOUBLE HYDROXIDES (Zn-Al-LDH)

I. HIMA Halidou 1, HAMIDOU HAROUNA Ibrahim 1, AMADOU KIARI Mahamane Nassirou 1, 2, *, IBRO DOUKA AbdoulKader 3, ADAMOU WAKOU Sallah 4 and NATATOU Ibrahim 1

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I. HIMA Halidou ¹, HAMIDOU HAROUNA Ibrahim ¹, AMADOU KIARI Mahamane Nassirou ^{1, 2, *}, IBRO DOUKA AbdoulKader ³, ADAMOU WAKOU Sallah ⁴and NATATOU Ibrahim ¹