Using the exhaustion-pad-dry-rinse method, chitosan was applied to alkaline-scoured and bleached cotton yarns in a solution with concentrations ranging from 0.2–1% achieve good antimicrobial activity against bacteria Escherichia coli (Gram-negative) Staphylococcus aureus (Gram-positive). Studied samples were also assessed by measuring amount of introduced chitosan, accessible amino groups, mech...

Dissociation kinetic analysis of a complex of Ce(3+) with a polyaminocarboxylic ligand, 8-amino-2-[(2-amino-5-methylphenoxyl)methyl]-6-methoxyquinoline-N,N,N',N',-tetraacetic acid (Quin2), was studied by microchip capillary electrophoretic reactor. Dissociation rate constants, k(d), of Ce(3+)-Quin2 complex in alkaline conditions at pH 8.3 - 9.8 were determined. The linear relationship of k(d) w...

Abstract: Multiwalled carbon nanotubes (MWCNTs) were coated with MgO nano particles using simple precipitationmethod. The growth of Mg(OH)2particles was controlled by adjusting the alkaline concentration, salt concentrationand feed rate in simple precipitation method. The nanometer-sized Mg(OH)2particles were precipitated on the surfaceof functionalized MWCNTs by reaction between MgSO4 solution...

The effects of (+ )-catechin adsorption to the alumina surface were studied by -potential and surface free energy determination. The presence of catechin causes essential changes in the alumina -potential, which at the concentration slightly higher than 10 M reverses from the positive into negative one. At constant concentration of catechin (10 M), the effect on -potential of alumina as a funct...

The paper investigates the physicochemical regularities (kinetics and isotherm) of phosphorus beryllium recovery by sorbents based on polyacrylonitrile (PAN) fiber Fe(OH)3 obtained various methods: PAN or pre-hydrolyzed with precipitation FeCl3 ammonia, using ready-made electrochemically generated Na2FeO4, treated an alkaline solution as well their comparison granular aluminum oxide. Langmuir, ...

Alkaline electrolyzers are the most widespread technology due to their maturity, low cost, and large capacity in generating hydrogen. However, compared proton exchange membrane (PEM) electrolyzers, they request use of potassium hydroxide (KOH) or sodium (NaOH) since electrolyte relies on a liquid solution. For this reason, performances alkaline governed by concentration operating temperature. D...

Measurement of urine to blood (U-B) carbon dioxide tension (P(CO2)) gradient during alkalinization of the urine has been suggested to assess distal H(+) secretion. A fact that has not been considered in previous studies dealing with urinary P(CO2) is that dissolution of HCO(3) in water results in elevation of P(CO2) which is directly proportional to the HCO(3) concentration. To investigate the ...

The production of concentration P.D.'s across the skin of the frog is very intimately related to the pH of the applied solutions. On the alkaline side of an isoelectric point the dilute solution is electropositive; on the acid side this solution becomes electronegative. When the pH is suddenly lowered from a value more alkaline than this isoelectric point to one considerably more acid the chang...

The crystallisation of struvite is one means of removing phosphate (and nitrogen) from nutrient-rich wastewater. As with all crystallisation processes, the growth rate of the crystals and its dependence on supersaturation is of considerable interest in designing processing equipment. Modelling of struvite solubility using the computer package MINTEQA2 showed that struvite exhibits a minimum sol...

The effects of initial solution pH on the decomposition of perfluorooctanoic acid (PFOA) with hydrated electrons as reductant were investigated. The reductive decomposition of PFOA depends strongly on the solution pH. In the pH range of 5.0-10.0, the decomposition and defluorination rates of PFOA increased with the increase of the initial solution pH. The rate constant was 0.0295 min(-1) at pH ...