PHYTOREMEDIATION TO REMOVE HEAVY METAL USING WATER LETTUCE (Pistia stratiotes L.) IN RIVER RECEIVING TEXTILE INDUSTRY EFFLUENT AFTER FILTRATION TREATMENT PROCESS

• Main Author: Alpiani, Tania
• Format: Final Project
• Language: Indonesia
• Subjects: Administrasi negara bidang ekonomi & lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/34946
• Institution: Institut Teknologi Bandung

Cikakembang River is located in Majalaya that contaminated by industral effluent discharges. Based on data of BPLHD Bandung Regency (2015), Cikakembang River is contaminated by organic and heavy metals pollutant in high concentration. Phytoremediation research of Pratiwi (2015) in Cikakembang River showed that research could proceed only 5 days because of pollutant in the river water. Samples of river water that had been filtered had better quality since the concentration of the parameters such as ammonium, nitrite, nitrate, COD, phenol, total phosphate, TDS and TSS had been decreased (Athifah, 2015). This study was aimed to increase Cikakembang River water quality by phytoremediation in river water after filtration. Cikakembang River water had been filterd by silica sand and activated carbon media and then phytoremediation was done using water lettuce (Pistia stratiotes L.). The research was performed in field and laboratorium scale. In laboratory scale research, two water lettuce were planted in 2L reactor that had been filled by Cikakembang River water. This research was assessed the efficiency Cu and Pb removal by phytoremediation in filtered Cikakembang River water. Based on this research results, Pb concentration in river water was <0.006 mg/L. Cu concentration in river water at field scale research was 0.041 mg/L decreased to 0.027 mg/L after sand filter. Cu concentration in river water at laboratory scale research was decreased from 0.067 mg/L to 0.061 mg/L after sand filtration and to 0.048 mg/L after activated carbon filtration. Decreasing of Cu concentration after filtration process showed Cu removal by filter. This research also showed that water lettuce could remove Cu concentration in river water with efficiency of 93- 95% in the 7th day. Bioconcentration Factor of Cu in water lettuce was more than 1000. It could be suggested that water lettuce was a good hiperaccumulator.