One of the directions of recovery of vegetable waste from various industrial processes is represented by their use as an adsorbent material for the retention of chemical pollutants (organic dyes and metal ions) from wastewater. In this context, we aimed to test the biosorptive potential of some vegetal waste remaining after obtaining vegetal extracts by liquid-solid extraction (using ethanol 96%), from some plants, such as: Primula veris, Achillea millefolium, Origanum vulgare and Artemisia absinthium, extracts used as biopesticides. This type of biosorbent was used for biosorption the reactive Orange 16 dye and Cu (II) ions from aqueous solutions, using a batch system. In order to evaluate the biosorbive potential of this materials, the influence of certain physical parameters such as temperature, pH solution, amount of biosorbent, dye/ metal ion concentration and phases contact time were investigated in case of biosorption process of Orange 16 dye / Cu (II) metal ions.The obtained results confirm that the studied vegetal wastes can be considered as promising biosorbent to retain organic dyes and metal ions from aqueous media. Therefore, the studies will be continued with the modeling of the biosorption equilibrium based on isotherms from the literature, thermodynamic determinations and kinetic studies. biosorption, dye retention, metal ions removal, vegetal waste as biosorbent

biosorption, dye retention, metal ions removal, vegetal waste as biosorbent

environmental engineering

Presentation: None