Neodymium adsorption from aqueous solution by β-cyclodextrin nanosponges and a polymer valorized from potato peels waste: experiments and conventional and statistical physics interpretations

Sonia Jemli, Yasmin Vieira, Guilherme Luiz Dotto*, Diovani Leindecker Rossatto, Fakhreddine Ben Amara, Farah Chamtouri, Samir Bejar, Claudete Gindri Ramos, Luis Felipe Oliveira Silva, Mohammad Rizwan Khan, Salim Manoharadas, Glaydson Simões dos Reis

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

2 Sitaatiot (Scopus)

Abstrakti

Using organic waste and residue streams to be turned into valuable and greener materials for various applications has proven an efficient and suitable strategy. In this work, two green materials (nanosponges and a polymer) were synthesized using potato peels and applied for the first time to adsorb and recover Neodymium (Nd3+) from aqueous solutions. The recovery of Nd3+ that belongs to the rare earth elements has attracted important interest due to its/their importance in several industrial and technological applications. The fine potato peel waste (FPPW) polymer presented an irregular shape and porous surface. At the same time, the β-cyclodextrin (β-CD) nanosponges had uniform distribution with regular and smooth shapes. β-CD nanosponges exhibited a much higher total carboxyl content (4.02 mmol g−1) than FPPW (2.50 mmol g−1), which could impact the Nd3+ adsorption performance because carboxyl groups can interact with cations. The adsorption capacity increased with the increase of the pH, reaching its maximum at pHs 6–7 for β-CD nanosponges and 4–7 for FPPW polymer. The kinetic and equilibrium data were well-fitted by General order and Liu models. β-CD nanosponges attained adsorption capacity near 100 mg Nd per gram of adsorbent. Thermodynamic and statistical physical results corroborated that the adsorption mechanism was due to electrostatic interaction/complexation and that the carboxyl groups were important in the interactions. β-CD nanosponges (three cycles of use) were more effective than FPPW (one cycle of use) in the regeneration. Finally, β-CD nanosponges could be considered an eco-friendly adsorbent to recover Nd3+ from aqueous matrices.

AlkuperäiskieliEnglanti
Sivut19974-19985
Sivumäärä12
JulkaisuEnvironmental Science and Pollution Research
Vuosikerta31
Numero13
DOI - pysyväislinkit
TilaJulkaistu - maalisk. 2024
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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