Dissolution behavior of metallic zinc in organic acid

A series of experiments were conducted to examine the effect of citric acid on the dissolution of zerovalent zinc. The effects of citric acid concentration, the presence of anions and temperature were studied. The results have shown that zinc dissolution registered a maximum of 34% with 0.5M citric acid after 270 min and that the nature of anions present with citric acid affected differently the dissolution rate. In fact, the presence of 2M nitrates with 0.5M citric acid dissolved totally zinc after 30min while 91.85% and 13.15% were dissolved in the presence of 2M chlorides and sulfates respectively after 270min. SEM analyses have shown that the morphology of the corroded surface depended on the composition of the solution. The kinetic study has shown that zinc dissolution was controlled by the chemical reaction in all cases and that the activation energy was 39.3 kJ mol -1 .

[1]  S. Legros,et al.  Anaerobic Digestion Alters Copper and Zinc Speciation. , 2017, Environmental science & technology.

[2]  Li-ming Rong,et al.  Assessment of the potential utilization of municipal solid waste from a closed irregular landfill , 2017 .

[3]  Souad Djerad,et al.  Optimization of the operation conditions for NiO dissolution with different leachants , 2017 .

[4]  Souad Djerad.  PYROMETALLURGICAL METHOD FOR THE RECOVERY OF ALUMINUM FROM Fe2O3/α-Al2O3 CATALYST , 2017 .

[5]  Souad Djerad,et al.  The effect of the nature of organic acids and the hydrodynamic conditions on the dissolution of Pb particles , 2017 .

[6]  L. Martin-Neto,et al.  Chemical forms in soil and availability of manganese and zinc to soybean in soil under different tillage systems , 2016 .

[7]  D. Stuckey,et al.  Trace metal speciation and bioavailability in anaerobic digestion: A review. , 2016, Biotechnology advances.

[8]  A. N. Ganeshamurthy,et al.  Organic Acids in the Rhizosphere: Their Role in Phosphate Dissolution , 2016 .

[9]  P. Strong,et al.  Fluctuation of dissolved heavy metal concentrations in the leachate from anaerobic digestion of municipal solid waste in commercial scale landfill bioreactors: The effect of pH and associated mechanisms. , 2015, Journal of hazardous materials.

[10]  M. Barlaz,et al.  Investigating landfill leachate as a source of trace organic pollutants. , 2015, Chemosphere.

[11]  B. Rhouta,et al.  Corrosion inhibition of zinc by calcium exchanged beidellite clay mineral: A new smart corrosion inhibitor , 2014 .

[12]  Souad Djerad,et al.  Degradability of aluminum in acidic and alkaline solutions , 2014 .

[13]  E. A. A. Aal,et al.  Factors affecting the corrosion behaviour of aluminium in acid solutions. II. Inorganic additives as corrosion inhibitors for Al in HCl solutions , 2013 .

[14]  E. Eymar,et al.  Effect of citric acid on metals mobility in pruning wastes and biosolids compost and metals uptake in Atriplex halimus and Rosmarinus officinalis , 2013, Environmental Monitoring and Assessment.

[15]  C. Leygraf,et al.  The initial release of zinc and aluminum from non-treated Galvalume and the formation of corrosion products in chloride containing media , 2012 .

[16]  S. Lo,et al.  Selective reduction of NO3− to N2 with bimetallic particles of Zn coupled with palladium, platinum, and copper , 2012 .

[17]  Souad Djerad,et al.  Dissolution of Cobalt from CoO/Al2O3 Catalyst with Mineral Acids , 2010 .

[18]  A. Baker,et al.  The effect of nitrogen form on rhizosphere soil pH and zinc phytoextraction by Thlaspi caerulescens. , 2008, Chemosphere.

[19]  A. N. Podobaev,et al.  The effect of chloride and sulfate anions on the iron dissolution rate in neutral and nearly neutral media , 2007 .

[20]  S. Johnson,et al.  Adsorption of organic matter at mineral/water interfaces. 2. Outer-sphere adsorption of maleate and implications for dissolution processes. , 2004, Langmuir : the ACS journal of surfaces and colloids.

[21]  J. Svensson,et al.  The Influence of NaNO3 on the Atmospheric Corrosion of Zinc , 2003 .

[22]  Olivier Proux,et al.  Forms of Zinc Accumulated in the HyperaccumulatorArabidopsis halleri 1 , 2002, Plant Physiology.

[23]  David L. Jones,et al.  Biodegradation of low molecular weight organic acids in coniferous forest podzolic soils , 2002 .

[24]  J. C. Fanning.  The chemical reduction of nitrate in aqueous solution , 2000 .

[25]  S. Pyun,et al.  Effects of applied potential and solution temperature on the pitting corrosion of pure aluminium in sulphate ion-containing chloride solution , 1999 .

[26]  G. Furrer,et al.  The coordination chemistry of weathering: I. Dissolution kinetics of δ-Al2O3 and BeO , 1986 .

[27]  V. Weekman,et al.  Chemical Reaction Engineering , 1974 .

[28]  J. F..  Textbook of Quantitative Inorganic Analysis , 1937, Nature.