Evaluation of Phenobarbital Adsorption Efficiency on Biosorbents or Activated Carbon Obtained from Adansonia Digitata Shells.

The removal of pharmaceutically active compounds present in relatively low concentration in wastewater is critical. This is because they have a severe, negative impact on life and the environment. To address this issue, adsorption was used, which is an effective wastewater treatment method for removing substances found in low concentrations in water.

Hydrothermal carbonization of vegetable-tanned leather shavings (HTC-VTS) for environmental remediation: optimization of process conditions.

Herein, the response surface methodology (RSM) has been used to study simultaneously the effects of carbonization temperature, residence time and moisture content on the activated hydrochar preparation-based vegetable-tanned leather shavings (VTS) using hydrothermal carbonization method (HTC). Owing to the desirability chosen, three responses were analysed, namely: the hydrochar yield, iodine and methylene blue numbers. The analysis of experimental results revealed that the hydrochar yield was decreased with increase in carbonization temperature which led to micropores formation inside the hydrochar network.

Removal of metallic trace elements (Pb, Cd, Cu, and Ni) from aqueous solution by adsorption onto cerium oxide modified activated carbon.

The equilibrium and kinetic studies of removal of Pb, Cd, Ni, and Cu metal ions were carried out using activated carbon prepared from palm kernel shell and doped with CeO (Ce/AC). The obtained material carbon was characterized by XRD which showed some crystalline traces of CeO, SEM displaying the porous texture with spherical pores and the determination of pH of point of zero charge (pH) which was found to be equal to 6. The contact time and adsorbate were thoroughly investigated.