Efficient removal of eriochrome black T dye using activated carbon of waste hemp (cannabis sativa L.) grown in northern morocco enhanced by new mathematical

Title : Efficient removal of eriochrome black T dye using activated carbon of waste hemp (cannabis sativa L.) grown in northern morocco enhanced by new mathematical

Abstract:

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.

Keywords: Cannabis waste; isotherms; Eriochrome black T; biosorbent; mathematical models

Audience Take Away: 

• The use of inexpensive, easily obtained, and ecological adsorbents.
• New bio-adsorbents were made for Colorant adsorption from an aqueous solution.
• Adsorptions of EBT dye by the activated carbon of cannabis.
• This study provides cost-effective and sustainable production of activated carbon.
• Application of mathematical modeling to develop new relevant mathematical models based on experimental results.

Biography:

Dr. Fouad EL Mansouri is currently working as a Research & Education Fellow at the Abdelmalek Essaadi University. He Obtained Ph.D. in Process Engineering and Environment in Joint PhD Programs between Faculty of Sciences and Techniques of Tangier, Abdelmalek Essaadi University, Morocco and Faculty of Sciences, University of Porto, Portugal. After his Ph.D., he worked as postdoctoral Research associate in Chemical, Environmental and Bioprocess Engineering Group, Natural Resources Institute, University of León in Spain. He has published more than 20 research articles in international journals. He has served as a reviewer for several journals. He also led and contributed in several funded research technicians. Dr. El Mansouri has also a passion for teaching. Currently, he is teaching Water Analysis Methods and hydrochemistry course at post-graduate level of University Abdelmalek Essaadi - Faculty of Sciences and Techniques in Al Hoceima, Morocco.