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Effectiveness of Turbidity Removal from Synthetic and Tannery Wastewater by Using Seeds of a Natural Coagulant Citrullus lanatus


Affiliations
1 Department of Chemical Engineering, Sathyabama University, Chennai-119, India
 

The cost of water treatment is increasing due to suspended and colloidal particle load caused by land development and high storm runoff. Water from all sources must have some form of purification and treatment before consumption. The coagulation process can be used as a primary step for water and wastewater treatment processes. Among plant materials that have been tested, the seeds of water melon (Citrullus lanatus) have been shown to be one of the most effective primary coagulants in water and wastewater treatment. Citrullus lanatus is the best natural coagulant that removes the BOD, COD, TSS and turbidity level to the greater extent. It was aimed at identifying watermelon seed as a possible replacement for alum and other synthetic polyelectrolytes in treating water. Results obtained showed that the optimum dosage of 2 g/L of seed at a temperature of 35°C removes the turbidity from 1500 NTU to 35 NTU. The seeds of C. lanatus reported that the turbidity of tannery effluent reduced by 86.7%, COD reduced by 50% and BOD reduced by 55% at a coagulant concentration of 2 g/L. The concentration of watermelon seeds in wastewater changes the turbidity from 692 NTU to 92 NTU. The study proved that C. lanatus gives better removal efficiency than alum for synthetic and tannery wastewater treatment and can be used as an alternative coagulant against the use of inorganic coagulants.

Keywords

Citrullus lanatus, Turbidity, Coagulant, Polyelectrolyte.
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  • Effectiveness of Turbidity Removal from Synthetic and Tannery Wastewater by Using Seeds of a Natural Coagulant Citrullus lanatus

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Authors

S. Sathish
Department of Chemical Engineering, Sathyabama University, Chennai-119, India
S. Vikram
Department of Chemical Engineering, Sathyabama University, Chennai-119, India
R. Suraj
Department of Chemical Engineering, Sathyabama University, Chennai-119, India

Abstract


The cost of water treatment is increasing due to suspended and colloidal particle load caused by land development and high storm runoff. Water from all sources must have some form of purification and treatment before consumption. The coagulation process can be used as a primary step for water and wastewater treatment processes. Among plant materials that have been tested, the seeds of water melon (Citrullus lanatus) have been shown to be one of the most effective primary coagulants in water and wastewater treatment. Citrullus lanatus is the best natural coagulant that removes the BOD, COD, TSS and turbidity level to the greater extent. It was aimed at identifying watermelon seed as a possible replacement for alum and other synthetic polyelectrolytes in treating water. Results obtained showed that the optimum dosage of 2 g/L of seed at a temperature of 35°C removes the turbidity from 1500 NTU to 35 NTU. The seeds of C. lanatus reported that the turbidity of tannery effluent reduced by 86.7%, COD reduced by 50% and BOD reduced by 55% at a coagulant concentration of 2 g/L. The concentration of watermelon seeds in wastewater changes the turbidity from 692 NTU to 92 NTU. The study proved that C. lanatus gives better removal efficiency than alum for synthetic and tannery wastewater treatment and can be used as an alternative coagulant against the use of inorganic coagulants.

Keywords


Citrullus lanatus, Turbidity, Coagulant, Polyelectrolyte.

References