Development of Microbes-Based Biofertilizer for Zinc Dissolution in Soil

The rate and morphology of zinc dissolution were studied in a Leclanche electrolyte of composition 0.5 mol dm-3 ZnCl2 and 5 mol dm-3 NH4Cl. A gelled electrolyte layer 2 x 10-3 m thick on the zinc surface was found to reduce the corrosion rate by an order of magnitude and to promote even dissolution. The corrosion results are interpreted in terms of a diffusion-controlled cathodic reaction involving O2 dissolution and metallic impurity deposition.

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Chemical kinetics of zinc dissolution in sulfurous acid solutions

The Canadian Journal of Chemical Engineering ◽

10.1002/cjce.5450560118 ◽

1978 ◽

Vol 56 (1) ◽

pp. 124-125 ◽

Cited By ~ 3

Author(s):

N. V. S. Sastri ◽

Norman Epstein

Keyword(s):

Chemical Kinetics ◽

Acid Solutions ◽

Sulfurous Acid ◽

Kinetics Of ◽

Zinc Dissolution

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Intensification of zinc dissolution process in sulphuric acid

Journal of Mining and Metallurgy Section B Metallurgy ◽

10.2298/jmmb0501047s ◽

2005 ◽

Vol 41 (1) ◽

pp. 47-66 ◽

Cited By ~ 7

Author(s):

D. Stanojevic ◽

D. Toskovic ◽

M.B. Rajkovic

Keyword(s):

Sulphuric Acid ◽

Electrical Contact ◽

Pure Metal ◽

Copper Electrode ◽

Copper Cathode ◽

Mineral Acids ◽

The Given ◽

Zinc Dissolution ◽

Hydrogen Overpotential

Many high purity salts are produced by dissolving pure metal in non-oxidizing mineral acids. If hydrogen overpotential on the given metal is high, then the rate of overall process is defined by reaction of hydrogen ion reduction. This study investigated the possibility of accelerated dissolving of metal zinc in sulphuric acid by introducing copper cathode on which evolving hydrogen is much easier than on zinc. It was found out that the acceleration of zinc dissolving is possible and, at constant surface of copper cathode depends on the quality of electrical contact between copper electrode and zinc.

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Inhibition of Brass Corrosion in Acid Medium Using Thiazoles

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.14.87 ◽

2013 ◽

Vol 14 ◽

pp. 87-102

Author(s):

K.K. Taha ◽

Musa E. Mohamed ◽

S.A. Khalil ◽

S.A. Talab

Keyword(s):

Weight Loss ◽

Thermal Properties ◽

Electrochemical Impedance Spectroscopy ◽

Impedance Spectroscopy ◽

Corrosion Rate ◽

Heat Exchangers ◽

Corrosion Inhibitors ◽

Inhibition Efficiency ◽

Electrochemical Impedance ◽

Zinc Dissolution

Brass as an alloy composed mainly of copper is great industrial uses such as heat exchangers and similar other facility due to its good thermal properties. Due to the presence of the considerable ratio of zinc the alloy suffers from zinc dissolution or dezincification. Dezincification rate increases with the increase in the ratio of zinc in the alloy. In this study benzothiazole (BTH) and its substituent’s 2-methylbenzothiazole (MeBTH), 2-aminobenzothiazole (ABTH), 2-mercaptobenzothiazole (MBTH) and 2-phenylbenzothiazole (PhBTH) have been used as corrosion inhibitors for α-brass in stirred 0.1 M HClO4. The methods of investigation include weight loss, Tafel and linear polarizations and electrochemical impedance spectroscopy. The order of inhibition efficiency (%E) was calculated and the values obtained has indicated the sequence of inhibition efficiency was found to be BTH < MeBTH < ABTH < PhBTH < MBTH. The calculated values of thermodynamic parameters support this order. The inhibitors were found to suppress the corrosion rate by the formation of films which were identified by IR, SEM and EDAX techniques.

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ChemInform Abstract: ZINC DISSOLUTION IN LECLANCHE ELECTROLYTE

Chemischer Informationsdienst ◽

10.1002/chin.197507039 ◽

1975 ◽

Vol 6 (7) ◽

pp. no-no

Author(s):

D. B. MATTHEWS ◽

P. G. CAPPS

Keyword(s):

Zinc Dissolution

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