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

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

doi:10.1007/s40201-023-00878-7

Cited by 1 publication

(1 citation statement)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, as a continuation of this work, we conclude that the elimination of Cr(VI) of this microalgae is achieved through adsorption. Given this optimum, an implication arises for industrial wastewater treatment processes that typically exhibit a very low pH range around one, particularly in effluents from tanneries, as reported by Muthukkauppan and Parthiban [56], and around three, as mentioned by Lissaneddine et al [57]. Although this is slightly more alkaline than the identified optimum of our study, it remains within a range conducive to high biosorption rates.…”

Section: B Effect Of Contact Timesupporting

confidence: 57%

Biosorption of Hexavalent Chromium by Freshwater Microalgae Craticula subminuscula from Aqueous Solutions

Sbihi,

Elhamji,

Lghoul

et al. 2024

Sustainability

Self Cite

View full text Add to dashboard Cite

Recently, microalgae have tended to be used as a biological treatment for wastewater decontamination. The present study aimed to investigate the Cr(VI) removal using the freshwater microalgae ‘Craticula subminuscula’ and their biobased adsorbant, isolated from a Moroccan river in the High Atlas Mountain. The optimum operational conditions for maximum Cr(VI) biosorption by the biobased adsorbent form (95.32%) were determined at (pH = 1.09, adsorbent dose = 10.91 mg L−1, and treatment duration = 129.47 min) using response surface methodology (RSM). Under those optimal conditions, the biosorption process of Cr(VI) by C. subminuscula is endothermic, spontaneous and follows Langmuir and a pseudo-second-order model with a constant rate; the theoretical and experimental biosorption capacity of 0.0004 g/mg/min was 289.01 mg g−1 and 277.57 mg g−1, respectively. Fourier Transform Infrared Spectroscopy (FTIR) analyses of the biomass and scanning electron microscopy (SEM) revealed that the principal mechanism to remove Cr(VI) by C. subminuscula was the affinity of Cr(VI) by the cell walls of microalgae. Thus, the positive results of desorption cycles promise increased potential utilization of these algae in continuous systems within industrial processes. The findings contribute valuable insights into the effectiveness of C. subminuscula as a biobased remediation agent for Cr(VI) in wastewater treatment.

show abstract

Section: B Effect Of Contact Timesupporting

confidence: 57%