Efficient capture of eosin yellow and crystal violet with high performance xanthan-acacia hybrid super-adsorbent optimized using response surface methodology.

•RSM-CCD technique provided the maximum swelling of 496.57% for the semi-IPN (adsorbent).•Maximum removal of eosin yellow and crystal violet was 95.42% and 97.58%, respectively.•Langmuir adsorption isotherm and second order kinetics were highly favorable to removal process of both dyes.•Intraparticle diffusion of dyes through three step process was applicable.•The eco-friendly adsorbent can be recycled up to many cycles before its disposal.