S. Sasikala; G. Muthuraman
Abstract
The Natural coagulant Vigna mungo, Zea mays were used to remove the turbidity from synthetic wastewater . Vigna mungo, Zea mays are ancient crop and having high proteins and nutrients. Chemical coagulants used it induce Alzheimer’s, Carcinogenic and neurotoxic health effects. This is alternative ...
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The Natural coagulant Vigna mungo, Zea mays were used to remove the turbidity from synthetic wastewater . Vigna mungo, Zea mays are ancient crop and having high proteins and nutrients. Chemical coagulants used it induce Alzheimer’s, Carcinogenic and neurotoxic health effects. This is alternative method for turbidity removal in synthetic wastewater. In this study Vigna mungo, Zea mays, Allium cepa ash, waste tea powder ash, Phyllanthus niruri ash used for turbidity removal. Vigna mungo seeds extract have highest percentage (90%) turbidity removal compared to Zea mays (76%). Microwave and ultrasonic assisted both methods are very efficient; 87% of turbidity removal achieved for Vigna mungo; 70% for Zea mays. Allium cepa peel ash, Waste tea powder ash, Phyllanthus niruri ash approximately almost above 95% of turbidity removal achieved. The various optimized parameters were studied and results are discussed. Natural coagulants are eco-friendly method for turbidity removal because the sludge disposal is very easy. The sludge it can be used as biocompost or biofertilizer.
S. Sasikala; Govindaraju Muthuraman
Abstract
The potential of economically cheaper Tribulus terrestris was assessed for iron adsorption from aqueous solutions. The effects of pH, Contact time, sorbent dose, initial metal ion concentration and temperature on the uptake of iron were studied in batch process. Chemical treatment processes are ineffective ...
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The potential of economically cheaper Tribulus terrestris was assessed for iron adsorption from aqueous solutions. The effects of pH, Contact time, sorbent dose, initial metal ion concentration and temperature on the uptake of iron were studied in batch process. Chemical treatment processes are ineffective and produce large quantity of sludge which requires further treatment. A simple and efficient treatment process for the removal of heavy metals is essentially required. Maximum iron removal was observed at pH 6 with adsorbent dosage of 0.6 g. The adsorbent data has been correlated with Langmuir and Freundlich adsorption models. FTIR and SEM before and after adsorption were recorded to explore the number and position of the functional groups available for iron binding onto the studied adsorbent and changes in surface morphology. The maximum percentage of iron removal was achieved at 87%. The results revealed that iron is considerably adsorbed on Tribulus terrestris and it could be economical method for the removal of iron from aqueous solutions. Pseudo second order model explains the iron kinetics more effectively.
