Open AccessRemoval of Cr (III) from industrial wastewater using coconut shell carbon and limestone as adsorbent
Author(s) -
Azinoor Azida Abu Bakar,
Nasruddin Razak,
Nor Azliza Akbar,
Nurhidayati Mat Daud,
Kashir Ali
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/646/1/012063
Subject(s) - adsorption , wastewater , industrial wastewater treatment , distilled water , chemistry , pulp and paper industry , carbon fibers , nuclear chemistry , agricultural waste , waste management , materials science , environmental science , chromatography , environmental engineering , organic chemistry , composite material , composite number , engineering
Agricultural waste materials gained attention among researchers to study the effectiveness of adsorbent media in heavy metal treatment. In this study, application of coconut shell carbon and limestone as modified adsorbent was used to remove Cr (III) from industrial wastewater. Synthetic industrial wastewater sample containing 2 mg/L of Cr (III) was prepared using distilled water and standard solution of Cr (III). Batch adsorption study was conducted to determine the effect of varied contact time (0 to 120 minutes) and pH (pH3 to pH7). The result shows that at 60 minutes of contact hour, the removal of Cr (III) from the synthetic industrial wastewater is about 98% with optimum adsorption capacity is 0.000019 mg/g at 250 rpm of agitation speed in pH5 as optimum pH. The kinetic data obtained specified that the data follow closely the pseudo-second-order. Thus, this indicates that mixing coconut shell carbon and limestone as a modified adsorbent has a potential in reducing Cr (III) concentration in industrial wastewater.