Rhodamine B removal with activated carbons obtained from lignocellulosic waste

Journal of Environmental Management
Viviane da Silva LacerdaJesús Martín-Gil

Abstract

By-products from the wax production process from carnauba palm (leaves), from the extraction of oil from macauba seeds (endocarp) and from pine nut production (shell) have been assessed for activated carbon production, using H3PO4 or CaCl2 for their chemical activation. The resulting activated charcoals have been thoroughly characterized by elemental and thermal analysis, X-ray diffraction, infrared spectroscopy, electron scanning microscopy and N2 adsorption behavior. Subsequently, their adsorption capacity for the removal of rhodamine B (RhB) from aqueous solutions has been evaluated by studying different parameters: contact time, pH, adsorbent dose, initial dye concentration and solution temperature. The adsorption of RhB followed Freundlich's model in all cases. Kinetic studies indicate that the pseudo-second order model can be used for describing the dynamics of the adsorption process. Thermodynamic parameters have also been evaluated, indicating its endothermic and spontaneous nature. Finally, a preliminary analysis of the impact of cellulose content in the carbon precursor materials has been conducted, by using a mixture of native cellulose with one of the lignocellulosic materials.

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Citations

Jun 7, 2016·Bioresource Technology· SuhasSarita Kushwaha
Jan 15, 2020·Environmental Science and Pollution Research International·Maria Roniele Félix OliveiraCarlucio Roberto Alves
Jul 11, 2018·Environmental Science and Pollution Research International·Flávia C C MouraBreno R L Galvão
Nov 30, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Astrid Roxanna Moreno-MarencoJuan Carlos Moreno-Piraján
Jun 27, 2018·Scientific Reports·E A Flores-JohnsonL Shen
Feb 1, 2019·Environmental Science and Pollution Research International·Thielle Nayara Vieira de SouzaSamira Maria Leão de Carvalho
Jan 29, 2020·Heliyon·Olugbenga Solomon BelloAdewumi Oluwasogo Dada
Jan 26, 2021·Journal of Analytical Methods in Chemistry·Thi Hai Yen DoanTien Duc Pham
Apr 10, 2021·Environmental Science and Pollution Research International·Chuanjin GuanXueying Gao
May 22, 2021·Environmental Science and Pollution Research International·Juan ZhangDongke Zhang
Jul 7, 2021·Water Environment Research : a Research Publication of the Water Environment Federation·Olugbenga S BelloAdewumi O Dada

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