The Use of Lanthanum Ions and Chitosan for Boron Elimination from Aqueous Solutions.

摘要: Boron is an essential element for plants and living organisms; however, it can be harmful if its concentration in the environment too high. In this paper, lanthanum(III) ions were introduced to structure of chitosan via encapsulation technique obtained hydrogel (La-CTS) was used elimination excess B(III) from modelling solutions. The reaction between boric acid hydroxyl groups bound lanthanum coordinated by active centres preponderant mechanism bio-adsorption removal process. results demonstrated that La-CTS removed aqueous solution more efficiently than either hydroxide or native hydrogel, respectively. When initial boron 100 mg/dm3, maximum adsorption capacity 11.1 ± 0.3 mg/g achieved at pH 5 time 24 h. successful introduction La(III) backbone confirmed Scanning Electron Microscopy with Energy Dispersive X-Ray Spectroscopy, Fourier-Transform Infrared Diffraction, X-ray Photoelectron Inductively Coupled Plasma Optical Emission Spectroscopy. Due high-performance adsorption-desorption cycle convenient form, seems a promising bio-adsorbent water treatment.