scholarly journals Horseradish Peroxidase Biosensor to Detect Zinc Ions in Aqueous Solutions

2014 ◽  
Vol 03 (01) ◽  
pp. 1-7 ◽  
Author(s):  
Mambo Moyo
Keyword(s):  
Horseradish Peroxidase ◽  
Aqueous Solutions ◽  
Zinc Ions

scholarly journals Qualitative and quantitative adsorption mechanisms of zinc ions from aqueous solutions onto dead carp derived biochar

RSC Advances ◽  
2021 ◽  
Vol 11 (60) ◽  
pp. 38273-38282
Author(s):  
Hong-tao Qiao ◽  
Yong-sheng Qiao ◽  
Xiao-hang Luo ◽  
Bao-wei Zhao ◽  
Qiu-ying Cai
Keyword(s):  
Aqueous Solutions ◽  
Pyrolysis Temperature ◽  
Zinc Ions ◽  
Adsorption Mechanisms ◽  
Qualitative And Quantitative

The adsorption mechanisms of Zn2+ on carp biochars mainly include precipitation with minerals, exchange with cations, and complexation with OFGs. The pyrolysis temperature of carp biochars has a significant effect on the mechanisms of Zn2+ adsorption.

Gram-scale synthesis of monodisperse sulfonated polystyrene nanospheres for rapid and efficient sequestration of heavy metal ions

2017 ◽  
Vol 53 (95) ◽  
pp. 12766-12769 ◽  
Author(s):  
Bin Gong ◽  
Yaotian Peng ◽  
Ziyan Pan ◽  
Weiming Chen ◽  
Yi Shen ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Large Scale ◽  
Zinc Ions ◽  
Sulfonated Polystyrene ◽  
Copper And Zinc ◽  
Polystyrene Nanospheres

Large-scale monodisperse sulfonated polystyrene nanospheres are synthesized for the removal of lead, copper and zinc ions from aqueous solutions.

Kinetics of removal of zinc ions from aqueous solutions by a modified acrylnitrile copolymer

1999 ◽  
Vol 39 (8) ◽  
pp. 139-146
Author(s):  
R. Y. Stefanova
Keyword(s):  
Aqueous Solutions ◽  
Metal Ions ◽  
Sorption Process ◽  
Intraparticle Diffusion ◽  
Zinc Ions ◽  
Sorption System ◽  
Modified Polymer ◽  
Rate Limiting Step ◽  
High Sorption ◽  
Kinetics Of

The kinetics of removal of zinc ions from aqueous solutions by a modified acrylnitrile copolymer containing carboxyl and amino groups has been investigated. The dependence of the rate of removal on the intensity of stirring, the size of the sorbent's particles, the initial concentration of metal ions and the temperature of the solution have been established. Attempts have been made to identify the rate limiting step and to determine the batch kinetic parameters. The limiting conditions of the transition from external to intraparticle diffusion step of mass transfer in a sorption system have been determined. The coefficients of intraparticle diffusion and the energy of activation of the sorption process have been established. The data obtained in this work show that the modified polymer with a high sorption capacity and very good kinetic characteristics can be successfully used for removal of heavy metal ions from water solutions and industrial wastewaters.

Removal of Linear and Branched Alkylphenols from Aqueous Solutions with Horseradish Peroxidase

2008 ◽  
Vol 72 (5) ◽  
pp. 1368-1371 ◽  
Author(s):  
Naoya IKEDA ◽  
Kazunori YAMADA ◽  
Takashi SHIBUYA ◽  
Ayumi KASHIWADA ◽  
Kiyomi MATSUDA ◽  
...  
Keyword(s):  
Horseradish Peroxidase ◽  
Aqueous Solutions

Removal of Zinc Ions from Acid Aqueous Solutions and Acid Mine Drainage Using Zeolite-Bearing Tuff

2018 ◽  
Vol 38 (1) ◽  
pp. 187-196 ◽  
Author(s):  
Afrodita Zendelska ◽  
Mirjana Golomeova ◽  
Blagoj Golomeov ◽  
Boris Krstev
Keyword(s):  
Acid Mine Drainage ◽  
Aqueous Solutions ◽  
Mine Drainage ◽  
Zinc Ions ◽  
Acid Mine

scholarly journals Studies on horseradish peroxidase in dimethyl sulphoxide/water mixtures. The activation of hydrogen peroxide and the binding of fluoride

1979 ◽  
Vol 179 (2) ◽  
pp. 273-280 ◽  
Author(s):  
P A Adams ◽  
D A Baldwin ◽  
G S Collier ◽  
J M Pratt
Keyword(s):  
Hydrogen Peroxide ◽  
Enzyme Activity ◽  
Horseradish Peroxidase ◽  
Aqueous Solutions ◽  
Similar Pattern ◽  
Solvent Mixture ◽  
Dimethyl Sulphoxide ◽  
Stock Solutions ◽  
Activation Of Hydrogen Peroxide

We studied the variation in spectra and in reactivity towards H2O2 of solutions of horseradish peroxidase in dimethyl sulphoxide/water mixtures, obtained by diluting stock solutions of the enzyme in either water or dimethyl sulphoxide, and assayed the enzyme activity and studied the binding of F- by the peroxidase in 65% (v/v) dimethyl sulphoxide. A broadly similar pattern of changes is observed whether one starts from water or from dimethyl sulphoxide; the changes are essentially reversible, though hysteresis is observed. When the dimethyl sulphoxide content of the solvent mixture is increased, the peroxidase retains its ability to activate H2O2 up to 74% (v/v) dimethyl sulphoxide. The peroxidase in 65% (v/v) dimethyl sulphoxide binds F- together with a proton (or the equivalent loss of HO-), as already established for aqueous solutions. We point out that the occurrence in such solutions of both the ability to activate H2O2 and the inability to bind F- without taking up H+ or losing HO- supports the proposed mechanism for activating H202, whereby the protein binds the substrate in the form of the much more reactive HO2-.

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