Open AccessRemoval of Chromium (VI) and Chromium (III) by using Chlorella sp Immobilized at Electroplating Wastewater
Author(s) -
Shinta Elystia,
H. S. Edward,
Aldila Putri
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/515/1/012078
Subject(s) - chromium , electroplating , wastewater , chemistry , nuclear chemistry , environmental chemistry , environmental engineering , metallurgy , materials science , environmental science , organic chemistry , layer (electronics)
Heavy metals which is mostly contained in electroplating wastewater is Cr, in the form of Cr (VI) and Cr (III). Cr (III) is relatively unstable but tends to be dangerous, Cr (VI) is very stable and has a high level of toxicity which is dangerous for the environment. This study aims to determine the ability of microalgae Chorella sp immobilized with calcium alginate in removing metals Cr (VI) and Cr (III) in electroplating wastewater with variations cell density in beads 0; 1.53×10 8 ; 1.76×10 7 and 1.54×10 6 cells / bead, pH 3, 5, 7, and 9 with contact time 0; 12; 24; 36 and 48 hours. Allowance carried out by microalgae Chlorella sp immobilized in reducing Cr (VI) and Cr (III) metals in electroplating wastewater with initial concentrations of Cr (VI) 24.78 mg/l and Cr (III) 0.91 mg/l with highest efficiency value of 50.28% at pH 3, cell density 1.54×10 6 cells/bead within 48 hours