Modified Agricultural Waste for Copper Ions Adsorption

Abstract

The present work represents potential bio-sorbents: Tilia cordata (little leaf linden) and Foeniculum vulgare (fennel). The copper removal was operated in batch procedure. Adsorbent mass, copper ion concentration, pH, time, and temperature considerations were inspected. The highly beneficial provisions for copper adsorption are 10 mg /L as preliminary concentration, 0.2 g as Tilia cordata and Foeniculum vulgare mass and pH 5.5 and 5.23 for Tilia cordata and Foeniculum vulgare. Adsorption statistics follow the Langmuir isotherm with qmax of 29.35 mg/g for Tilia cordata and 32.98 mg/g for Foeniculum vulgare. The removal procedure kinetics was provided perfectly via second-order equations. It was revealed that the copper ion adsorption procedure on mutual bio-sorbents is a spontaneous procedure, and is endothermal for Tilia cordata and Foeniculum vulgare. Characterization of Tilia cordata (little leaf linden) and Foeniculum (vulgare fennel) were inspected with a scanning electron microscope (SEM), Vis-IR Spectroscopy, GC-mass and milling cutter. A distinctive development in the adsorbent surface was exhibited through scanning electron microscope. The removal efficiency reached to 93.34 & 95.4 for Tilia (Tilia cordata) and Fennel (Foeniculum vulgare) respectively at 0.5 M bio-sorbent which indicated that Tilia (Tilia cordata) and Fennel (Foeniculum vulgare) has good renderability and stability.