Outstanding adsorption capacity of iron oxide synthesized with extract of açaí berry residue: kinetic, isotherm, and thermodynamic study for dye removal

De Souza, Ana Paula Nazar; Sánchez, Dalber R.; Alzamora, Mariella; Colaço, Marcos Vinicius; de Souza, Marcelo Augusto Vieira; De Gois, Jefferson Santos; Senra, Jaqueline Dias; Carvalho, Nakédia M. F.

doi:10.1007/s11356-023-29872-0

Cited by 3 publications

(2 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Non-linear Langmuir isotherm model [41]: Where q max is the maximum adsorption capacity expressed in mg g −1 , C e represents the equilibrium CR dye concentration expressed in mg l −1 , K L refers to the Langmuir constant in L mg −1 . Non-linear Freundlich isotherm model [41]:…”

Section: Adsorption Isotherms Studymentioning

confidence: 99%

Probing the structural transformation of ZIF-L to ZnO for sustainable congo red dye removal

Priyananda Singh,

Wareppam,

Singh

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

Severe water pollution due to industrial dye effluents has alarmed the scientific world to unravel a suitable technique and appropriate catalysts for dye removal and wastewater management. In the present work, the adsorbent capacity of ZnO was tuned by calcining ZIF-L, a class of Metal Organic Framework (MOF) at temperatures ranging from 300-600 oC. XRD, FTIR, FESEM-EDX and XPS analysis shows the decomposition of ZIF-L and the nucleation of ZnO at the higher calcining temperatures above 350 oC. The ZIF-L derived ZnO obtained at 420-500 oC exhibited higher CR removal capacity than ZIF-L and ZnO obtained through co-precipitation. The optimized calcining temperature was observed at 480 oC with a maximum Congo Red (CR) dye removal percentage of 94.8 %. The adsorption capacities increased from 24.88 mg g-1 to 117.07 mg g-1 as the initial adsorbent dosage decreased from 0.5 g L-1 to 0.1 g L-1. Further, the Langmuir and Freundlich isotherm studies predict the increase in adsorption capacity from 49.09 mg g-1 to 183.98 mg g-1as the initial dye concentration increases from 5 mg L-1 to 50 mg L-1 at the optimal Z480 adsorbent dose of 0.1 g L-1. The result shows that the dye adsorption kinetics and isotherm are well fitted with the Pseudo second order model and the Fruendlich model. The plausible mechanism of dye interaction with the surface of ZnO nanoparticles at different calcining temperatures is also discussed.

show abstract

Section: Adsorption Isotherms Studymentioning

confidence: 99%

Probing the structural transformation of ZIF-L to ZnO for sustainable congo red dye removal

Priyananda Singh,

Wareppam,

Singh

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…One of the studies used iron oxide-based nanoparticles containing soybean hulls and açaí seeds to absorb triclosan from water (Vidovix et al, 2022). Another study aimed to remove dyes from water, but using agro-industrial waste to create a green absorbent (De Souza et al, 2023). Additionally, metallic gold nanoparticles have been used to treat pancreatic and prostate cancer using açaí and elderberry extract (Sibuyi et al, 2021).…”

Section: Metallic Nanoparticlesmentioning

confidence: 99%

Different açaí by-products in nanostructured formulations: a brief literature review

Nunes,

Machado,

Sabbagh

et al. 2023

DS-CNT

View full text Add to dashboard Cite

Açaí (Euterpe oleracea) is a fruit native to the Amazon rainforest which has several well-known properties. Its by-products have physicochemical limitations and the bioactive substances, specifically the polyphenols, are susceptible to degradation by oxidation during exposure to oxygen, humidity, light, high temperatures and pH alteration. In this context, nanotechnology is related to structures, properties and processes involving materials with dimensions on the nanometer scale, and can be used to overcome these limitations due to the fact that these particles are extensively researched because they offer many advantages over traditional formulations. The aim of this study was to prepare a literature review considering the different by-products of açaí, their biological activities and nanostructured materials to which açaí was complexed. The search was carried out using the Scientific Electronic Library Online (SciELO), PubMed and Web of Science databases, and articles were selected that were written in English, published between 2012 -2023 and used the descriptors "nano*" AND "açaí" and "nano*" AND "Euterpe Oleracea". The studies found showed that the most commonly used nanoformulation was the polymeric nanoparticle and three appeared with the same frequency, namely the metallic nanoparticle, nanoemulsion and nanofiber, while the most exploited by-products are oil, fruit and seeds. Majority of studies also found that açaí by-products nanoformulations are used in the food industry, in the creation of biodegradable materials, in the delivery of pharmaceuticals, and in the area of cosmetology. However, only a small number of studies showed evaluations of biological properties of these products.

show abstract

Antioxidant, Antimicrobial, and Anticancer Potential of Green Synthesized ZnO Nanoparticles from Açaí (Euterpe oleracea Mart.) Berry Seed Residue Extract

Vieira,

da Silva,

da Silva

et al. 2024

Waste Biomass Valor

View full text Add to dashboard Cite

Outstanding adsorption capacity of iron oxide synthesized with extract of açaí berry residue: kinetic, isotherm, and thermodynamic study for dye removal

Cited by 3 publications

References 67 publications

Probing the structural transformation of ZIF-L to ZnO for sustainable congo red dye removal

Probing the structural transformation of ZIF-L to ZnO for sustainable congo red dye removal

Different açaí by-products in nanostructured formulations: a brief literature review

Antioxidant, Antimicrobial, and Anticancer Potential of Green Synthesized ZnO Nanoparticles from Açaí (Euterpe oleracea Mart.) Berry Seed Residue Extract

Contact Info

Product

Resources

About