Pine cones powder for the adsorptive removal of copper ions from water

Abstract

This research investigates the adsorption potential of pine cones powder (PCP) for the removal of copper ions (Cu(II)) from aqueous solutions. The process of adsorption was reasonably fast to be completed within a time of 60 min. The pseudo-second order kinetic model describes properly the Cu(II) adsorption by PCP. The adsorbent was characterised by various instrumental techniques and batch experiments were conducted to investigate the effect of PCP dose, solution pH, particle size and initial Cu(II) concentration on adsorption efficiency. Optimum Cu(II) removal occurred at a slightly acidic pH, with a particle size less than 100 ?m. The effective PCP dose was estimated to be 36 g.L-1. The increase in the initial concentration of Cu (II) was accompanied by a reduction in the rate of its reduction by almost half. The Langmuir model was the best fitting isotherm with a maximum adsorption capacity of 9.08 mg.g-1. The thermodynamic parameters values showed that the Cu(II) adsorption was a spontaneous and endothermic process. The results of this research suggest that Cu(II) could be removed through an environmentally friendly process using PCP as low-cost natural wastes.

The Needles of Aleppo Pine from the Province of Taza-Morocco – A Biomaterial of Great Potential

“…In this last fi eld, several works have focused on the choice of an adsorbent that meets the criteria of effi ciency, stability in the environment, regeneration, and low investment cost especially when it comes to the removal of heavy metals (Zhu et al 2019;. Our laboratory has tested several adsorbents based on natural materials such as the use of snail shells for the removal of copper from aqueous solutions and the production of valuable compounds (Ouafi , Asri, et al 2021), the exploitation of powder from pinecones for the removal by adsorption of copper ions from water (Ouafi , Omor, et al 2021) and the use of sawing for the treatment of heavy metals from contaminated wastewater (Ouafi et al 2017).…”

Evaluation of using waste pinecones as an eco-friendly additive to water-based mud

“…These cones are generally natural waste and have no practical use in human life. However, an attempt is made to use these cones in different fields (Büyüksarı and Dundar, 2010;Gokdai et al, 2017;Ouafi et al, 2021). The huge quantities of these abandoned cones in forests and greenery areas prove the fact that these cones are practically useless.…”