APPLICATION OF SHALLOW POND SYSTEM USING WATER HYACINTH FOR DOMESTIC WASTEWATER TREATMENT IN THE PRESENCE OF HIGH TOTAL DISSOLVED SOLIDS (TDS) AND HEAVY METAL SALTS

2010 ◽  
Vol 9 (7) ◽  
pp. 953-960
Author(s):  
Alireza Valipour ◽  
Venkatraman Kalyan Raman ◽  
Parastoo Motallebi
Author(s):  
S.V. Skupnevskiy

Polymeric fibrous ion-exchange materials based on polyacrylonitrile matrix, produced in the form of cation-exchanger KN-1 and anion-exchanger AS-1 were the object of the study. We studied the sorption properties of these materials to heavy metal salts and products of their chemical transformation with flotation reagents. According to obtained results, exchange processes have high speed and materials are characterized by high value of absorption – up to 250 mg/g. The introduction of a cascade filtration scheme ensures the treatment of highly contaminated multicomponent industrial wastewater to levels that comply with the hygienic requirements. The advantages of the materials under study are the possibility of their repeated regeneration (by acid and alkali) without losing their original properties and the possibility of concentrating the desorbed metals for the purpose of their recycling again.


Water ◽  
2015 ◽  
Vol 7 (12) ◽  
pp. 329-347 ◽  
Author(s):  
Alireza Valipour ◽  
Venkatraman Raman ◽  
Young-Ho Ahn

2020 ◽  
Vol 13 (1) ◽  
pp. 10
Author(s):  
Fahruddin Fahruddin

Waste of heavy metal lead (Pb) in waters needs to be addressed through phytoremediation because it is toxic to the environment. The purpose of this study is to determine the effect of water hyacinth (Eichhornia crassipes) ability in water to absorb heavy metal Pb and its effects to total dissolved solids (TDS) of groundwater during the phytoremediation process. Using E. crassipes, groundwater samples and Pb(NO3)2 as a source of Pb, the initial characterization of the two samples was previously carried out. Created four treatments of ground water, i.e.:  P1 contains 2 ppm Pb with E. crassipes, P2 contains 4 ppm Pb with E. crassipes, P3 contains 2 ppm Pb without E. crassipes, and P4 contains 4 ppm Pb without E. crassipes. Observation of Pb by method of atomic absorption spectrometry (AAS) and determination of TDS by gravimetric method, each carried out on days 0, 4, 8, and 12. The results show the treatment of 2 ppm Pb, E. crassipes is more effective at absorbing Pb which is 96.0% compared to treatment 4 ppm Pb which is 90.0%. While 2 ppm Pb and 4 ppm Pb as control only 18.5% and 17.5%. Treatment of 2 ppm Pb which uses E. crassipes shows better water quality than concentration TDS 62.55 ppm compared to treatment of 4 ppm Pb with TDS 70.50 ppm while 2 ppm Pb and 4 ppm Pb as a control does not significantly affect to water quality.


2014 ◽  
Vol 13 (1) ◽  
pp. 145-152 ◽  
Author(s):  
Alireza Valipour ◽  
Seyed Masoud Taghvaei ◽  
Venkatraman Kalyan Raman ◽  
Gagik Badalians Gholikandi ◽  
Shervin Jamshidi ◽  
...  

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