Adsorption for rhodamine b dye and biological activity of nano-porous chitosan from shrimp shells

• Published in: Environmental science and pollution research international Vol. 29; no. 33; pp. 49858 - 49869
• Main Authors: Pompeu, Lenise Deon, Muraro, Pâmela Cristine Ladwig, Chuy, Gabriela, Vizzotto, Bruno Stefanello, Pavoski, Giovani, Espinosa, Denise Crocce Romano, da Silva Fernandes, Liana, da Silva, William Leonardo
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.07.2022; Springer Nature B.V
• Subjects: Adsorption; Anti-Infective Agents; Antiinfectives and antibacterials; Antimicrobial activity; Antimicrobial agents; Aquatic Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; Biological activity; Charge materials; Chitosan; Dyes; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Environmental science; Hydrogen-Ion Concentration; Kinetics; Nanotechnology; Research Article; Rhodamine; Rhodamines; Shells; Surface charge; Sustainable development; Waste Water Technology; Water Management; Water Pollutants, Chemical; Water Pollution Control; Zeta potential; Biosorbent; Rhodamine B; Adsorption; Nano-porous chitosan; Wastewater treatment
• ISSN: 0944-1344; 1614-7499
• DOI: 10.1007/s11356-022-19259-y

The present work aims to evaluate the removal capacity of Rhodamine B dye (RhB) using nano-porous chitosan (NC) from shrimp shells. NC was characterized by XRD, SEM–EDS, N 2 porosimetry, zeta potential (ZP), FTIR, DLS, and zero charge point (pH ZCP ). Compound central rotational design (CCRD) was used to determine the ideal condition and antimicrobial activity was evaluated against different strains. NC showed characteristic of semi-crystalline material with negative charge surface (around − 21.13 mV), and S BET  = 1.12 m 2  g −1 , Vp  = 0.0064 cm 3  g −1 , Dp  = 32.09 nm and pH ZCP ≈ 7.98. Kinetic adsorption showed the pseudo first-order model had the best fit, with adsorption capacity (q 1 ) between 3.78 and 64.43 mg g −1 and pseudo first-order kinetic constant (k 1 ) between 0.066 and 0.052 min −1 . Sips model best described the equilibrium data, with a maximum adsorption capacity of 505.131 mg g −1 . Antimicrobial activity was observed at 0.25 mg mL −1 for different strains. Therefore, NC has potential application in the removal of the dye, combining sustainable development associated with nanotechnology.