Biochar Derived from Water Hyacinth Biomass Chemically Activated for Dye Removal in Aqueous Solution

Marcelo Teixeira Carneiro, Alan Ícaro Sousa Morais, André Luiz Ferreira de Carvalho Melo, Francisco José Lustosa Ferreira, Francisco Eroni Paz Santos, Bartolomeu Cruz Viana, Josy Anteveli Osajima, Roosevelt D. S. Bezerra, Maria Del Mar Orta Cuevas, Ramón Raudel Peña-Garcia, Luciano C. Almeida and Edson C. Silva-Filho ()
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Marcelo Teixeira Carneiro: Federal Institute of Piauí, Campus Floriano, Floriano 64800-000, PI, Brazil
Alan Ícaro Sousa Morais: Interdisciplinary Laboratory for Advanced Materials, Federal University of Piauí, Teresina 64049-550, PI, Brazil
André Luiz Ferreira de Carvalho Melo: Federal Institute of Piauí, Campus Floriano, Floriano 64800-000, PI, Brazil
Francisco José Lustosa Ferreira: Federal Institute of Piauí, Campus Floriano, Floriano 64800-000, PI, Brazil
Francisco Eroni Paz Santos: Interdisciplinary Laboratory for Advanced Materials, Federal University of Piauí, Teresina 64049-550, PI, Brazil
Bartolomeu Cruz Viana: Interdisciplinary Laboratory for Advanced Materials, Federal University of Piauí, Teresina 64049-550, PI, Brazil
Josy Anteveli Osajima: Interdisciplinary Laboratory for Advanced Materials, Federal University of Piauí, Teresina 64049-550, PI, Brazil
Roosevelt D. S. Bezerra: Federal Institute of Piauí, Teresina-Central Campus, Teresina 64000-060, PI, Brazil
Maria Del Mar Orta Cuevas: Departamento de Química Analítica, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain
Ramón Raudel Peña-Garcia: Academic Unit of Cabo de Santo Agostinho, Rural Federal University of Pernambuco, Cabo de Santo Agostinho 54518-430, PE, Brazil
Luciano C. Almeida: Academic Unit of Cabo de Santo Agostinho, Rural Federal University of Pernambuco, Cabo de Santo Agostinho 54518-430, PE, Brazil
Edson C. Silva-Filho: Interdisciplinary Laboratory for Advanced Materials, Federal University of Piauí, Teresina 64049-550, PI, Brazil

Sustainability, 2023, vol. 15, issue 19, 1-24

Abstract: Rapid industrial development has led to the use of numerous dyes responsible for significant water pollution worldwide. Adsorbents have been developed to treat these waters, mainly in the form of activated biochar, which has several advantages, one of which is its good surface characteristics, such as high surface area and pore volume. The objective of the investigation was to analyze the efficiency of removing the methylene blue model dye in aqueous solutions through the adsorption process using biochar chemically activated from the leaf and stem of water hyacinth ( Eichhornio crassipes ) as a bioadsorbent. This study carbonized the stem and leaf containing zinc chloride at 600 °C. The materials were characterized by different techniques and were tested for their ability to adsorb methylene blue. The activated stem and leaf biochars removed approximately 285.71 and 322.58 mg g −1 of the dye, respectively, indicating that the adsorption is more significant in the leaf. Pseudo-second-order kinetics was the most suitable model to describe dye adsorption on biochars, and the experimental isotherm data fit the Langmuir model. It is concluded that the application of activated water hyacinth biochar is a renewable resource with the potential for effluent treatment.

Keywords: Eichhornia crassipes; biochar; activation; methylene blue (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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