Institute of Chemistry of the Academy of Sciences of Moldova
Larisa Postolachi
chemjm_correspondence@yahoo.com
mEDRA
20161225
07
10.19261/cjm.2016.11(1).03
http://www.cjm.asm.md/sites/default/files/article_files/ChemJMold201611(1)_27-32_Postolachi.pdf
Institute of Chemistry of the Academy of Sciences of Moldova
mEDRA
01
Chemistry Journal of Moldova
05
ChemJMold
01
Institute of Chemistry of the Academy of Sciences of Moldova
MD
07
1857-1727
JB
07
2345-1688
JD
11
1
June 2016
01
201606
3
11
27
32
6
01
Effect of Aluminium Sulphate Aging on Coagulation Process for the Prut River Water Treatment
1
A01
Larisa Postolachi
Postolachi, Larisa
Larisa
Postolachi
2
A01
Vasile Rusu
Rusu, Vasile
Vasile
Rusu
3
A01
Tudor Lupascu
Lupascu, Tudor
Tudor
Lupascu
01
eng
20
coagulation; Jar-test; aluminium sulphate; aging
01
Aluminium sulphate is one of the most widely used coagulants for water treatment and has been proven to be an effective coagulant for the removal of certain contaminants, turbidity and colour. Aluminium sulphate used during the coagulation process is hydrolyzed in the water, forming polynuclear complexes. Aged aluminium solutions show different coagulation behaviour than that of freshly prepared solutions. Obtained results reveal that using of optimal aging solution of coagulant improves the coagulation process.
201606
2016
Institute of Chemistry of the Academy of Sciences of Moldova
10.1002/jctb.1300
Gao, B.; Hahn, H.; Hoffmann, E. Evaluation of aluminum-silicate polymer composite as a coagulant for water treatment. Water Research, 2002, 36, pp. 3573–3581
Jiang, J.-Q.; Graham, N. Pre-polymerised inorganic coagulants and phosphorus removal by coagulation - A review. Water SA, 1998, 24(3), pp. 237–244
10.1016/j.colsurfa.2008.10.009
10.1016/j.chemosphere.2004.08.066
10.1016/S0160-4120(98)00073-7
10.1080/09593338909384716
Wu. Z.; Zhang, P.; Zeng, G.; Zhang, M.; Jiang, J. Humic acid removal from water with polyaluminum coagulants: effect of sulfate on aluminum polymerization. Journal of Environmental Engineering, 2012, 138(3), pp. 293–298
Stumm, W.; Morgan, J. Chemical aspects of coagulation. Journal of the American Water Works Association, 1962, 54, pp. 971–992
Children’s health and environment in the Republic of Moldova, Chisinau, 2010. http://www.mediu.gov.md/images/documente/starea_mediului/rapoarte/nationale/p5_raport_parma_en.pdf
10.19261/cjm.2015.10(1).03
Satterfield, Z. Jar Testing. Technical Brief, 2005, 5(1), pp. 1–4
Pask, D. Jar Testing: Getting started on a low budget. On Tap, 1993, 2(2), pp. 4–6
Madera, V.; Allen, H. E.; Minear, R. A., Eds. Examination of Water for Pollution Control, World Health Organization. Pergamon Press: Copenhagen, Denmark, 1982, 1st Ed., vol. 2, pp. 37–42
Stefan, D.; Costache, C.; Ruxandu, V.; Balas, M.; Stefan, M. Comparative study on surface water treatment using aluminum sulphate and polyaluminum chlorides as coagulant reagents. Environmental Engineering and Management Journal, 2009, 8(4), pp. 859–863
Governmental Decision no. 934 of 15 August 2007 regarding the establishment of automated information system “State Register of natural mineral and drinking waters and soft bottled drinks”. Official Journal of the Republic of Moldova, 24.08.2007, no. 131-135 (970). (in Romanian). http://lex.justice.md/viewdoc.php?action=view&view=doc&id=326557&lang=1