Comparison of batch and fixed bed column adsorption: a critical review

Recently many researchers concluded that adsorption is widely utilized for removal of pollutants, owning potential dominance like competence, cost-effective, flexibility in design, convenience of low-cost, user-friendly and worldwide available adsorbent, low energy requirement, easy regeneration process of some used adsorbent, etc. Present review paper emphasizes the comparisons of various batch and fixed bed adsorption process. Numerous scientists have been compared these processes using different parameters like adsorption capacity, percentage removal and other parameters. Adsorption capacity using Langmuir and Thomas isotherms for batch and fixed bed adsorption process, respectively, are reviewed. A list of world most pollutants, i.e., metal and dye with their adsorption capacity and the experimental conditions, has been compiled individually, in which maximal adsorption experiments of Chromium(II) and methylene blue were conducted, respectively. Available experimental data on miscellaneous adsorbates like drug, insecticides, pesticides, ions and other chemicals contributing pollutants in the present context are also reviewed and tabulated. This review article concluded that column adsorption is feasible than batch process. [GRAPHICS] .

Automated summary

Adsorption is widely used for pollutant removal due to its potential advantages such as cost-effectiveness and convenience. This study focuses on comparing various adsorption processes and evaluating their adsorption capacity and removal efficiency. It concludes that column adsorption may be more feasible than batch processes.