Zinc adsorption from aqueous solution on biosorbent from urban pruning waste. Issue 5 (23rd February 2022)

• Record Type: Journal Article
• Authors: Sia, Gustavo Bordon; Vernasqui, Laís Gimenes; Consolin-Filho, Nelson; Gonçalves, Morgana Suszek; Medeiros, Flávia Vieira da Silva
• Is Part Of: Environmental technology. Volume 43:Issue 5(2022)
• Page Start: 728
• Page End: 736
• Publication Date: 2022-02-23
• Subjects: Biosorbent -- urban pruning waste -- zinc; Environmental engineering -- Periodicals; Environmental protection -- Periodicals; 628.05
• DOI: 10.1080/09593330.2020.1803418
• Languages: English
• ISSNs: 0959-3330

Abstract

ABSTRACT: In this study, urban pruning waste biosorbent after thermal activation process was used to remove zinc ion from aqueous solution. The zinc adsorption was fast, with values above 98.0% removal after 5 min. The maximum removal achieved was 99.4% in 360 min, at 30°C, pH 5.0, and initial zinc concentration of 10 mg L −1 . The adsorption process was adequately described by the pseudo-second-order kinetic model ( R 2 = 1.000), and data obtained from batch adsorption experiments fitted well with the Langmuir isotherm model. The maximum adsorption capacity of zinc onto urban pruning waste biosorbent was 18.382 mg g −1 at 30°C. Thus, it is concluded that urban pruning waste can be used as a low-cost alternative biosorbent to remove zinc in aqueous solutions. GRAPHICAL ABSTRACT: UF0001