Adsorption isotherm models: A comprehensive and systematic review (2010-2020).

Adsorption isotherm models: A comprehensive and systematic review (2010−2020)

Biosorption is a variant of sorption techniques in which the sorbent is a material of biological origin. This technique is considered to be low cost and environmentally friendly, and it can be used to remove pollutants from aqueous solutions. The objective of this review is to report on the most significant recent works and most recent advances that have occurred in the last couple of years (2019–2020) in the field of biosorption. Biosorption of metals and organic compounds (dyes, antibiotics and other emerging contaminants) is considered in this review. In addition, the use and possibilities of different forms of biomass (live or dead, modified or immobilized) are also considered.

Biosorption: A Review of the Latest Advances

Functionalized Zea Mays Cob (FZMC) as low-cost agrowaste for effective adsorption of malachite green dyes data set

Raw sawdust was used to prepare two chemically activated carbon — one after treating with Ortho-phosphoric acid and another using sodium hydroxide. The adsorbents thus prepared were used to study indigo carmine removal under batch mode. The adsorbents were thus characterized and compared using the results. The isotherm models were employed to test the adsorption isotherm data. The Langmuir model showed the best fit among the models for both of the adsorbents. The pseudo-second-order model characterized the kinetic behaviour for both of the adsorbents. The thermodynamic results implied that the process was exothermic. The activated carbon prepared after activation with Orthophosphoric acid gave better removal than the one activated with Sodium Hydroxide; hence a Fourier Transform Infrared (FT-IR) spectroscopy was performed. Further, a Response Surface Methodology Optimization of the operating conditions was done using it as the adsorbent.

Batch adsorption of indigo carmine on activated carbon prepared from sawdust: A comparative study and optimization of operating conditions using Response Surface Methodology

In the quest for a sustainable environment and clean water resources, the efficacy of Ocimum gratissimum leave (OGL) for indigo carmine (IC) dye biosorption was studied in a batch technique. The ph...

Oghenerukevwe G Umukoro

Papers

Sustainable and low-cost Ocimum gratissimum for biosorption of indigo carmine dye: kinetics, isotherm, and thermodynamic studies.