New Biosorbent Materials: Selectivity and Bioengineering Insights

Abstract

Many researchers have studied the biosorption of different pollutants. However, a quite limited number of works focus on selectivity, which may be characterized as specific property for each biosorbent. Two main criteria need to be adopted for the selection and synthesis of modern biosorbents, such as their rebinding capacity and selectivity for only one target, molecule, ion, etc. Selective biosorption could be achieved using in synthesis an innovative technique termed molecular imprinting; the idea applied through specific polymers (Molecular Imprinted Polymers (MIPs)) was used in many fields, mainly analytical. In the present work, also isotherm and kinetic models were reviewed highlighting some crucial parameters, which possibly affect selectivity. A critical analysis of the biosorption insights for biosorbents, mostly selective, describes their characteristics, advantages and limitations, and discusses various bioengineering mechanisms involved.

Agricultural peels for dye adsorption: A review of recent literature

“…Kinetic modeling gives information about adsorption mechanisms and possible ratecontrolling steps such as mass transport or chemical reaction processes [38][39][40]. Several kinetic models as pseudo-first and pseudo-second order, Weber-Moris, and Elovich are available.…”

ANALISIS PENCEMARAN Cr(VI) DI SUNGAI BADEK, KOTA MALANG DENGAN MENGGUNAKAN BIOFILM

“…Pencemaran lingkungan, terutama di ekosistem perairan, adalah salah satu masalah lingkungan terpenting pada saat ini. Pencemaran dalam ekosistem perairan disebabkan oleh berbagai polutan seperti logam berat termasuk Cr(VI) (Duruibe et al, 2007;Kyzas et al, 2014;Guan et al, 2018). Pencemaran pada ekosistem perairan menyebabkan degradasi ekosistem perairan secara bertahap.…”

Antarctic yeast Cryptococcus laurentii (AL65): biomass and exopolysaccharide production and biosorption of metals

“…Adsorptive competition among different metal ions in mixture solutions, the usual actual state of wastewaters, influence the uptake of individual metals, hence enabling selective adsorption. Selective separation and reuse of some pollutants from the environment is a subject that is attracting considerable interest nowadays in view of environmental protection and problems of mineral resource depletion . The requirements for an economically feasible biosorption process include high adsorption capacity of biomass with clear affinity to some of the metals in the mixture solution, as well as a suitable means of ion release to ensure efficient recovery of targeted metals in addition to inexpensive and regenerative adsorbents.…”