The proton binding properties of biosorbents
Barriada, José L.
Sastre de Vicente, Manuel E.
MetadataShow full item record
A broad variety of materials of biological origin have been successfully used in recent decades for the removal of pollutants from waters. These biosorbents include natural polymers that play a key role for adsorption. It is therefore critical to understand the physicochemical properties of the chemical groups of these biopolymers. The acid-base properties of biomass are affected by pH, ionic strength and medium composition. Nevertheless, these parameters are not always considered during biosorption studies. According to the literature, less than 3% of biosorption reports include studies on proton binding. Moreover, in 60% of these papers, there is key experimental information missing such as the calibration of the electrodes employed for potentiometric titrations. We consider therefore that there is an important need for reviewing the role of proton binding in biosorption studies. This review outlines the major advances on data interpretation and modelling of proton binding on biosorbents. In addition, we discuss issues concerning the acid-base properties of biosorbents.
Is part ofEnvironmental Chemistry Letters, 2019, vol. 17, p. 1281-1298
European research projects
Showing items related by title, author, creator and subject.
Martínez-Cabanas, María; López García, Marta; Rodríguez-Barro, Pilar; Vilariño, Teresa; Lodeiro, Pablo; Herrero, Roberto; Barriada, José L.; Sastre de Vicente, Manuel E. (MDPI, 2021)In this work, water extracts from different bio-based products of plant origin were studied to evaluate their antioxidant capacity and their potential to form metal nanoparticles from aqueous solutions. Two traditional ...
New polymeric/inorganic hybrid sorbents based on red mud and nanosized magnetite for large scale applications in As(V) removal López García, Marta; Martínez-Cabanas, María; Vilariño, Teresa; Lodeiro, Pablo; Rodríguez-Barro, Pilar; Herrero, Roberto; Barriada, José L. (Elsevier, 2017-03-01)Red mud (RM), a waste product generated in the industrial production of aluminium, was recovered for a second use as As(V) adsorbent. RM adsorption properties were compared to those obtained with a nanostructured in-lab ...
Full description of copper uptake by algal biomass combining an equilibrium NICA model with a kinetic intraparticle diffusion driving force approach Herrero, Roberto; Lodeiro, Pablo; Vilariño, Teresa; Rey Castro, Carlos; David, Calin; Rodríguez-Barro, Pilar; García Casal, Lino J. (Elsevier, 2011)In this work kinetic and equilibrium studies related to copper binding to the protonated macroalga Sargassum muticum are reported. An intraparticle-diffusion linear driving force (LDF) model has been chosen for the ...