Continuous treatment of highly concentrated tannery wastewater using novel porous composite beads: Central composite design optimization study

Amina Lissaneddine; Khalid Aziz; Naaila Ouazzani; Mounir El Achaby; Imane Haydari; Laila Mandi; Faissal Aziz

doi:10.1007/s40201-023-00878-7

Continuous treatment of highly concentrated tannery wastewater using novel porous composite beads: Central composite design optimization study

J Environ Health Sci Eng. 2023 Sep 12;21(2):513-532. doi: 10.1007/s40201-023-00878-7. eCollection 2023 Dec.

Authors

Amina Lissaneddine^{1

2}, Khalid Aziz³, Naaila Ouazzani^{1

2}, Mounir El Achaby⁴, Imane Haydari^{1

2}, Laila Mandi^{1

2}, Faissal Aziz^{1

2}

Affiliations

¹ National Center for Research and Studies On Water and Energy (CNEREE), Cadi Ayyad University, B. 511, 40000 Marrakech, Morocco.
² Laboratory of Water, Biodiversity, and Climate Change, Faculty of Sciences Semlalia, Cadi Ayyad University, B.P. 2390, 40000 Marrakech, Morocco.
³ Department of Analytical Chemistry, Faculty of Marine and Environmental Sciences, University of Cadiz, Puerto Real, Cadiz, 11510 Spain.
⁴ Materials Science and Nano-Engineering (MSN) Department, VI Mohammed Polytechnic University (UM6P), Lot 660 - Hay Moulay Rachid, Benguerir, 43150 Morocco.

PMID: 37869602
PMCID: PMC10584791 (available on 2024-09-12)
DOI: 10.1007/s40201-023-00878-7

Abstract

This present study depicts the successful employment of fixed-bed column for total chromium removal from tannery wastewater in dynamic mode using sodium alginate-powdered marble beads (SA-Marble) as adsorbent. The SA-Marble composite beads prepared were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and Brunauer, Emmett and Teller (BET) method. The adsorption process performance of this bio-sorbent was examined in batches and columns for real effluent (tannery wastewater). After 90 min, the total chromium removal efficiency could be kept above 90% in the batch experiment. The adsorption kinetics fit better with the pseudo-second-order model, indicating the chemisorption process and the adsorption capacity of about 67.74 mg g^-1 at 293 K (C0 = 7100 mg L^-1) was obtained. Additionally, dynamic experiments indicate that the total chromium removal efficiency could be maintained above 90% after 120 min at 293 K and 60 min at 318 and 333 K; it's an endothermic but rapid process. The effects of two adsorption variables (Temperature and time) were investigated using central composite design (CCD), which is a subset of response surface methodology (total Cr, COD, sulfate, and total phosphorus percentage removal). This work paves a new avenue for synthesizing SA-Marble composite beads and provides an adsorption efficiency of total chromium removal from tannery wastewater.

Keywords: Alginate-powdered marble beads; Biosorption; Central composite design; Fixed-bed columns; Tannery wastewater; Total chromium.

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