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- Title
Preparation of lactic acid modified cellulose nanoparticles by microwave heating for preconcentration of copper from blood and food samples.
- Authors
Kenawy, Ibrahim Mohamed; Mortada, Wael Ibrahim; El-Reash, Yasmeen Gaber Abou; Mousa, Aya Atef
- Abstract
In this study, nano-sized cellulose modified with lactic acid (MW-Ce-LA) was prepared with the assistant of microwave then used for the adsorption of Cu2+ from real samples. This modified cellulose was characterized by means of FTIR, TEM, XRD, and elemental analysis. ICP-OES was used for determination of Cu2+. The effect of pH, adsorption times, temperature, sorbent dose, and initial adsorbate concentration were studied to detect the ideal adsorption condition. Langmuir model proved to be the best to fit the adsorption isotherm experiments with maximum adsorption capacity of 90.3 mg g−1 Cu2+. Calculated thermodynamic parameters (ΔG° and ΔH°) for adsorption of Cu2+ on MW-Ce-LA suggested exothermic and nonspontaneous character of the adsorption process. The reusability tests indicated regeneration of the prepared adsorbent simply using 1 mol L−1 of HCl. The examined method was used effectively to preconcentrate Cu2+ from water, blood, and food samples.
- Subjects
LACTIC acid; CELLULOSE; ADSORPTION isotherms; BLOOD sampling; ADSORPTION capacity; ABSORPTION (Physiology)
- Publication
Environmental Science & Pollution Research, 2020, Vol 27, Issue 7, p7256
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-019-07426-7