Effective Cd²⁺ removal from water using novel micro-mesoporous activated carbons obtained from tobacco: CCD approach, optimization, kinetic, and isotherm studies.

ABSTRACT:

Purpose

This research aimed to develop activated carbons from tobacco by double (thermal-physical) and triple activations (thermal-chemical-physical) for high-efficiency removal of Cd²⁺.

Methods

The adsorbents were characterized by their chemical composition, point of zero charge (pH_PZC), SEM, FT-IR, BET, and BJH. The subsequent adsorption studies were conducted: optimal conditions (CCD on adsorbent dose versus pH of Cd²⁺ solution), kinetics, equilibrium, thermodynamics, and desorption studies.

Results

The activated carbons have irregular and heterogeneous morphology, surface functional groups COO-, C-O, C-O-C, C=O and O-H, pH_PZC of 11.11 and 10.86, and enhanced SSA (especially for CT NaOH + CO₂ = 103.40 g 

SUBMITTER: Manfrin J 

PROVIDER: S-EPMC8617146 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature