Textile Dye Removal by Acacia dealbata Link. Pollen Adsorption Combined with UV-A/NTA/Fenton Process

Abstract The decolourization of an aqueous solution the textile dye Acid Red 88 (AR88) and control invasive plant species Acacia dealbata Link . (ADL) were addressed in this work. aims study (1) characterization ADL pollen, (2) application pollen powder adsorption processes, (3) selection best operational conditions for nitriloacetic acid (NTA)-UV-A-Fenton process (4) assess efficiency combined treatment NTA-UV-A-Fenton AR88 decolourization. In a first step, was used as bioadsorbent. Fourier-transform infrared spectroscopy (FTIR) analysis performed revealed presence proteins, fatty acids, carbohydrates lignin pollen. Afterwards, trough scanning electron microscopy (SEM), it possible to verify that has several empty spaces can be adsorption. Biosorption results showed higher with pH 3.0 [pollen] = g/L 18.8 mg/g adsorbed. fitting observed Langmuir, SIPS Jovanovic isotherms (0.993, 0.996 0.994, respectively). To complement biosorption, UV-A-Fenton applied, removal (NTA) addition. Higher irradiance power favored oxidation high Ф photodegradation value low Electric Energy per Order ( $$E_{\text{EO}}$$ E EO ) Specific Applied $$E_{\text{SAE}}$$ SAE ). combination biosorption most efficient system 98.5% total organic carbon (TOC) 83.5%. Graphical