Investigation of removal possibilities of chromium(III) oxide from water solution in the presence of albumins

Szewczuk-Karpisz, Katarzyna; Wiśniewska, Małgorzata

doi:10.1007/s13762-014-0712-y

Cited by 13 publications

(8 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Under these conditions, the adsorbate masks the adsorbent charge and the silica surface exhibits the properties typical of BSA. The described phenomenon was also observed in the electrokinetic study of the chromium(III) oxide suspension in the presence of BSA, HSA and OVA [40] and during the development of a new model for the BSA adsorption on the alumina surface based on the zeta potential and UV-Vis measurements [33].…”

Section: Resultsmentioning

confidence: 57%

Adsorption and thermal properties of the bovine serum albumin–silicon dioxide system

Wiśniewska

Szewczuk-Karpisz

Sternik

2014

J Therm Anal Calorim

View full text Add to dashboard Cite

The adsorption, electrokinetic, thermal and stability properties of the silicon dioxide (silica, SiO 2 )/ bovine serum albumin (BSA) system were determined. All measurements were carried out as a function of solution pH value. The highest amount of BSA absorbed on the silica surface was observed at pH 4.6 [the value close to the BSA isoelectric point (pI)], which is primarily related to the packed albumin conformation and the lack of adsorbentadsorbate electrostatic repulsion. At pH 4.6, largest mass decrease was also noticed (thermogravimetric measurements). At pH 3, 7.6 and 9, the adsorption levels were much lower. This phenomenon is associated with the electrostatic repulsion between the BSA macromolecules and the silica particles as well as the expanded BSA structure. During biopolymer adsorption, the whole solid surface is coated with the albumin macromolecules. Then, the properties of the silica particles become similar to those of the BSA macromolecules. In the presence of albumin, the silica pH iep point is identical to the BSA pI value. It should also be noted that the albumin adsorption affects the SiO 2 suspension stability. The greatest change was observed at pH 3. Under these conditions, the BSA addition causes electrosteric system stabilization.

show abstract

Section: Resultsmentioning

confidence: 57%

Adsorption and thermal properties of the bovine serum albumin–silicon dioxide system

Wiśniewska

Szewczuk-Karpisz

Sternik

2014

J Therm Anal Calorim

View full text Add to dashboard Cite

show abstract

“…The hydrophobicity map was produced using the hydrophaty index. 14 Recent experimental BSA adsorption studies [15][16][17][18][19][20] have revealed numerous interesting phenomena regarding this protein's behaviour at the surface. However, even modern experimental techniques in isolation have limited access to molecular details such as:…”

Section: Figure1mentioning

confidence: 99%

Bovine Serum Albumin Adsorption at a Silica Surface Explored by Simulation and Experiment

et al. 2017

View full text Add to dashboard Cite

Molecular details of BSA adsorption on a silica surface are revealed by fully atomistic molecular dynamics (MD) simulations (with a 0.5 μs trajectory), supported by dynamic light scattering (DLS), zeta potential, multiparametric surface plasmon resonance (MP-SPR), and contact angle experiments. The experimental and theoretical methods complement one another and lead to a wider understanding of the mechanism of BSA adsorption across a range of pH 3-9. The MD results show how the negatively charged BSA at pH7 adsorbs to the negatively charged silica surface, and reveal a unique orientation with preserved secondary and tertiary structure. The experiments then show that the protein forms complete monolayers at ∼ pH6, just above the protein's isoelectric point (pH5.1). The surface contact angle is maximum when it is completely coated with protein, and the hydrophobicity of the surface is understood in terms of the simulated protein conformation. The adsorption behavior at higher pH > 6 is also consistently interpreted using the MD picture; both the contact angle and the adsorbed protein mass density decrease with increasing pH, in line with the increasing magnitude of negative charge on both the protein and the surface. At lower pH < 5 the protein starts to unfold, and the adsorbed mass dramatically decreases. The comprehensive picture that emerges for the formation of oriented protein films with preserved native conformation will help guide efforts to create functional films for new technologies.

show abstract

“…Several adsorbents (eucalyptus bark, saw dust, sand, clay mineral, charcoal, and various agricultural by products like peanut shell, wheat husk, sugarcane bagasse, biosorption, magnetic beads, carbon nanotubes, Sinorhizobium meliloti 1021 exopolysaccharide, polyacrylic acid, ionic polyamino acid block copolymers, albumins, synthetic polyacrylamide, etc.) have been examined by many scientists for their chromium removal efficiencies in different parts of the world (Gupta et al 2001 ; Garg et al 2004 ; Mohan et al 2006 ; da Fonseca et al 2006 ; Dubey and Gopal 2007 ; Karnitz et al 2007 ; Karale et al 2007 ; Li et al 2008 ; Owlad et al 2009 ; Atieh et al 2010 ; Ramakrishnaiah and Prathima 2012 ; Wiśniewska and Szewczuk-Karpisz 2013 ; Szewczuk-Karpisz et al 2014 ; Mandal et al 2015 ; Ostolska and Wiśniewska 2015 ; Szewczuk-Karpisz and Wiśniewska 2015 ; Wisniewska et al 2016 ). However, there is no report in the literature on the chromium removal using local adsorbents in Ethiopia.…”

Section: Introductionmentioning

confidence: 99%

Removal of trivalent chromium from aqueous solution using aluminum oxide hydroxide

2016

View full text Add to dashboard Cite

Water is second most essential for human being. Contamination of water makes it unsuitable for human consumption. Chromium ion is released to water bodies from various industries having high toxicity which affects the biota life in these waters. In this study aluminum oxide hydroxide was tested for its efficiency to remove trivalent chromium from aqueous solutions through batch mode experiments. Chromium concentrations in aqueous solutions and tannery waste water before and after adsorption experiments were determined using flame atomic absorption spectrometry. The effects of pH, contact time, initial concentration and adsorbent dosage on the adsorption of Cr(III) were studied. The study revealed that more than 99 % removal of Cr(III) was achieved over wide range of initial pH (3–10). The optimum conditions for the removal of Cr(III) were found to be at pH 4–6 with 40 g/L adsorbent dose at 60 min of contact time. The adsorption capacity was assessed using Langmuir and Freundlich isotherms. The equilibrium data at varying adsorbent dose obeyed the two isotherms. The adsorbent was found to be efficient for the removal of Cr(III) from tannery waste effluent.

show abstract

Investigation of removal possibilities of chromium(III) oxide from water solution in the presence of albumins

Cited by 13 publications

References 59 publications

Adsorption and thermal properties of the bovine serum albumin–silicon dioxide system

Adsorption and thermal properties of the bovine serum albumin–silicon dioxide system

Bovine Serum Albumin Adsorption at a Silica Surface Explored by Simulation and Experiment

Removal of trivalent chromium from aqueous solution using aluminum oxide hydroxide

Contact Info

Product

Resources

About