Application of chemically modified waste tucumã (Astrocaryum aculeatum) seeds in the biosorption of methylene blue: kinetic and thermodynamic parameters

Application of chemically modified waste tucumã (Astrocaryum aculeatum) seeds in the biosorption of methylene blue: kinetic and thermodynamic parameters

Dye effluents cause diverse environmental problems. Methylene blue (MB) dye stands out since it is widely used in the textile industry. To reduce the pollution caused by the MB, we developed biosorbents from tucumã seeds, where the in natura seeds were treated with NaOH (BT) and H 3 PO 4 (AT) soluti...

Full description

Saved in:
Bibliographic Details
Published in:Environmental science and pollution research international Vol. 31; no. 23; pp. 34097 - 34111
Main Authors: Lobo, Wyvirlany Valente, Loureiro Paes, Orlando Amazonas da Rocha, Pinheiro, William, Soares, Elzalina Ribeiro, de Souza, Mayane Pereira, dos Santos Sousa, Airi, Kumar, Vineet, Iglauer, Stefan, de Freitas, Flávio A.
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 02-05-2024
Springer Nature B.V
Subjects:
Adsorption
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Biosorption
Dyes
Earth and Environmental Science
Ecotoxicology
Endothermic reactions
Environment
Environmental Chemistry
Environmental Health
Environmental impact
Ethanol
Methylene blue
Multilayers
Pollution control
Research Article
Seeds
Sodium hydroxide
Textile industry
Thermodynamics
Titration
Waste Water Technology
Water Management
Water Pollution Control
Tucumã seeds
Biosorbent
Adsorption isotherms
Adsorption kinetics
Methylene blue dye
Waste
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Dye effluents cause diverse environmental problems. Methylene blue (MB) dye stands out since it is widely used in the textile industry. To reduce the pollution caused by the MB, we developed biosorbents from tucumã seeds, where the in natura seeds were treated with NaOH (BT) and H 3 PO 4 (AT) solutions and characterized by Boehm titration, point of zero charges, FTIR, TGA, BET, and SEM. It was observed that the acid groups predominate on the surface of the three biosorbents. The process was optimized for all biosorbents at pH = 8, 7.5 g/L, 240 min, C 0  = 250 mg/L, and 45 ℃. BT was more efficient in removing MB (96.20%; Q Max  = 35.71 mg/g), while IT and AT removed around 60% in similar conditions. The adsorption process best fits Langmuir and Redlich-Peterson isotherms, indicating a hybrid adsorption process (monolayer and multilayer) and pseudo-second-order kinetics. Thermodynamic data confirmed an endothermic and spontaneous adsorption process, mainly for BT. MB was also recovered through a desorption process with ethanol, allowing the BT recycling and reapplication of the dye. Thus, an efficient and sustainable biosorbent was developed, contributing to reducing environmental impacts.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1614-7499
0944-1344
1614-7499
DOI:10.1007/s11356-024-33517-1