Title: The use of response surface methodology for modelling of lead (II) removal from industrial waste by pumice and vermiculite

Authors: Fulya Aydin Temel; Nurdan Gamze Turan; Okan Ozgonenel; Yüksel Ardalı

Addresses: Department of Environmental Engineering, Giresun University, Giresun, Turkey ' Department of Environmental Engineering, Ondokuz Mayis University, Samsun, Turkey ' Department of Electrical and Electronic Engineering, Ondokuz Mayis University, Samsun, Turkey ' Department of Environmental Engineering, Ondokuz Mayis University, Samsun, Turkey

Abstract: The main goal of the present work was to search the feasibility of pumice and vermiculite as adsorbents for lead (II) removal from industrial waste by using Box-Behnken method. Batch adsorption method was performed to evaluate the feasibility. Box-Behnken surface statistical design approach with three inlet parameters namely pH (2, 5, 8), adsorbent concentration (10, 50, 100 mg L⁻¹), and contact time (5, 30, 120 min) was conformed optimising experimental conditions of lead (II) adsorption process. Experiments were carried out regression analysis demonstrated good proper of the experimental data to the linear model with coefficient of determination (R²) values of 91.49% and 98.51% for vermiculite and pumice, respectively. Optimisation of pH (2-2), adsorbent concentration (57.81 mg L⁻¹−75.00 mg L⁻¹), and contact time (89.06 min, −78.50 min) gave a maximum of ≈ 99.99% lead (II) removal for vermiculite and pumice, respectively.

Keywords: Box-Behnken design; ANOVA; vermiculite; pumice; lead (II) removal.

DOI: 10.1504/IJGW.2018.092895

International Journal of Global Warming, 2018 Vol.15 No.2, pp.175 - 189

Received: 17 Jan 2017
Accepted: 27 Mar 2017
Published online: 02 Jul 2018 *

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