Efficient Removal of Eriochrome Black T Dye Using Activated Carbon of Waste Hemp (Cannabis sativa L.) Grown in Northern Morocco Enhanced by New Mathematical Models

• Type: Article in International Scientific Journal
• Date: 2022

Authors

El Mansouri, F (Author) Other; Pelaz, G (Author) Other; Moran, A (Author) Other; Joaquim C G E Esteves da Silva (Author) FCUP; Cacciola, F (Author) Other; El Farissi, H (Author) Other; Tayeq, H (Author) Other; Zerrouk, MH (Author) Other; Brigui, J (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: SEPARATIONS

Vol. 429

Final page: 283

ISSN: 2297-8739

Indexing

ISI Web of Knowledge - 5 Citations

Scopus - 5 Citations

Other information

Authenticus ID: P-00X-9J5

DOI: 10.3390/separations9100283

Abstract (EN): In the present work, the adsorption behavior of Eriochrome Black T (EBT) on waste hemp activated carbon (WHAC) was examined. The surface of the WHAC was modified by H3PO4 acid treatment. The surface and structural characterization of the adsorbents was carried out using Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) analysis. The effect of influential adsorption parameters (pH, contact time, dosage, and initial concentration) on the adsorption of EBT onto WHAC was examined in batch experiments; some adsorption parameters such as pH, concentration and dose were improved by new mathematical models. The adsorption behavior of EBT on the surfaces of WHAC was evaluated by applying different isotherm models (Langmuir, Freundlich, Temkin and Dubinin-Radushkevich) to equilibrium data. The adsorption kinetics was studied by using pseudo-first-order, pseudo-second-order, Elovich and intraparticle models on the model. Adsorption followed the pseudo-second-order rate kinetics. The maximum removal of EBT was found to be 44-62.08% by WHAC at pH = 7, adsorbent dose of 10-70 mg, contact time of 3 h and initial dye concentration of 10 mg.L-1. The maximum adsorption capacities were 14.025 mg.g(-1) obtained by calculating according to the Langmuir model, while the maximum removal efficiency was obtained at 70 mg equal to 62.08% for the WHAC. The adsorption process is physical in the monolayer and multilayer.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 19