An overview on the key advantages and limitations of batch and dynamic modes of biosorption of metal ions

• Published in: Chemosphere (Oxford) Vol. 357; p. 142051
• Main Authors: Malbenia John, Masamvu, Benettayeb, Asmaa, Belkacem, Mohamed, Ruvimbo Mitchel, Chitepo, Hadj Brahim, Mustapha, Benettayeb, Imene, Haddou, Boumediene, Al-Farraj, Saleh, Alkahtane, Abdullah Ali, Ghosh, Soumya, Chia, C.H., Sillanpaa, Mika, Baigenzhenov, Omirserik, Hosseini-Bandegharaei, Ahmad
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.06.2024
• Subjects: adsorption; Batch mode; biosorbents; biosorption; Breakthrough curves; Dynamic mode; humans; Industrial scale; Isotherm models; Kinetic models; Lab scale; Sorption; thermodynamics; water purification; Sorption; Isotherm models; Lab scale; Batch mode; Kinetic models; Industrial scale; Dynamic mode; Breakthrough curves
• ISSN: 0045-6535; 1879-1298; 1879-1298
• DOI: 10.1016/j.chemosphere.2024.142051

Water purification using adsorption is a crucial process for maintaining human life and preserving the environment. Batch and dynamic adsorption modes are two types of water purification processes that are commonly used in various countries due to their simplicity and feasibility on an industrial scale. However, it is important to understand the advantages and limitations of these two adsorption modes in industrial applications. Also, the possibility of using batch mode in industrial scale was scrutinized, along with the necessity of using dynamic mode in such applications. In addition, the reasons for the necessity of performing batch adsorption studies before starting the treatment on an industrial scale were mentioned and discussed. In fact, this review article attempts to throw light on these subjects by comparing the biosorption efficiency of some metals on utilized biosorbents, using both batch and fixed-bed (column) adsorption modes. The comparison is based on the effectiveness of the two processes and the mechanisms involved in the treatment. Parameters such as biosorption capacity, percentage removal, and isotherm models for both batch and column (fixed bed) studies are compared. The article also explains thermodynamic and kinetic models for batch adsorption and discusses breakthrough evaluations in adsorptive column systems. The review highlights the benefits of using convenient batch-wise biosorption in lab-scale studies and the key advantages of column biosorption in industrial applications. [Display omitted] •Adsorption properties of batch and dynamic modes of biosorption were scrutinized in different conditions.•The key advantages and drawbacks of each mode were mentioned.•The benefits of exploitation of each mode were explained depending on the application purpose.•Comparison between batch and dynamic modes of biosorption revealed limitations of the former.•The switch to the dynamic mode seems to be necessary for practical applications.