000			01963nab a2200361Ia 4500
001			Art-186
008			170220s0000 CNT 000 0 und d
020			_a1296-2074
245	1	0	_aGranite desalination using electromigration. Influence of type of granite and saline contaminant
300			_a12 p.
310	1	0	_aBimensual
520	3		_aWe describe the results of electromigration desalination of two soluble salt-contaminated Galician granites. The efficacy of elecromigration, which had not been previously applied to granite, was assessed for two types of contaminated with a 20% NaCl solution and sewater. Desalination effectivenes was evaluated as follows: (1) analysis of anode and cathode ion content during testing; (2) analysis of ions at different distances from the elecrodes after testing; (3) pH assessment of the stone surfaces; and (4) evaluation of colour changes. Results were very satisfactory; by the end of testing, chloride was educed by almost 100% in both the NaCl and seawater contaminated samples. Sulfate reduction was also significant, despite this ion's lower mobility. The granite pH values remained close to neutral and colour changes were minimal. The difference in effectiveness of the process fot the two types of stone was associated with their dissimilar pore structure.
650			_aChloride
650			_aClorur
650			_aCloruro
650			_aDesalination
650			_aDesalinización
650			_aDessalinització
650			_aElecromigración
650			_aElectromigració
650			_aElectromigration
650			_aGranit
650			_aGranite
650			_aGranito
650			_aSulfat
650			_aSulfate
650			_aSulfato
700	1		_aFernando Carrera
700	1		_aJavier Taboada, Cristina Montojo
700	1		_aJorge Feijoo, Xosé Ramón Nóvoa
700	1		_aTeresa Rivas, María Jesús Mosquera
773			_tJournal of Cultural Heritage 5 _x1296-2074 _g14 5, 365-376
999			_c7877 _d7877