Utilization of Pacara Earpod tree (Enterolobium contortisilquum) and Ironwood (Caesalpinia leiostachya) seeds as low-cost biosorbents for removal of basic fuchsin

Environmental Science and Pollution Research International
Yamil L de O SalomónG L Dotto

Abstract

Wastes from the Pacara Earpod tree (Enterolobium contortisilquum) and Ironwood (Caesalpinia leiostachya) seeds were studied as biosorbents for the removal of basic fuchsin from waters. Both biosorbents were prepared and characterized by different analytical methods. The characterization data showed that both materials were mainly composed of lignin, cellulose, and hemicellulose. Both biosorbents exhibited roughened surfaces and surface functional groups such as C-H, C=O, C=C, C-O, C-N, and OH bonds. Furthermore, the XRD pattern shows an amorphous phase with a wide peak from 10 to 30° due to the lignin. In terms of dosage and pH, the use of 1 g L-1 and 9.0, respectively, is recommended. The initial concentrations for the biosorption kinetics ranged from 50 to 500 mg L-1, where the Pacara ear and the Ironwood reached an adsorption capacity of 145.62 and 100.743 mg g-1 for the 500 mg L-1. The pseudo-second-order was found to be the proper model for describing biosorption of basic fuchsin onto Pacara Earpod tree and Ironwood, respectively. For the isotherm experiments, the maximum experimental biosorption capacity was found to be 166.858 and 110.317 mg g-1 for the Pacara Earpod and Ironwood for the initial concentration of 500 mg L...Continue Reading

References

Aug 1, 1984·American Industrial Hygiene Association Journal·Y H Yoon, J H Nelson
Nov 13, 2007·Journal of Colloid and Interface Science·V K GuptaJyoti Mittal
Dec 1, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Jordana GeorginGuilherme Luiz Dotto
Dec 20, 2018·Environmental Science and Pollution Research International·Caroline de Oliveira CarvalhoFernando Machado Machado
May 10, 2019·Environmental Science and Pollution Research International·Jordana GeorginGuilherme L Dotto
Sep 6, 2019·Environmental Science and Pollution Research International·Paola T HernandesGuilherme L Dotto
Jan 22, 2020·Environmental Science and Pollution Research International·Dison S P FrancoGuilherme L Dotto
Apr 21, 2020·International Journal of Biological Macromolecules·Khoiria Nur Atika PutriWatchanida Chinpa

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