TY - JOUR
T1 - Heterogeneous fenton oxidation catalysed by rebar flakes waste for removal of methyl orange in water
AU - Adityosulindro, Sandyanto
AU - Rahdhani, Amadira
AU - Hartono, Djoko M.
N1 - Funding Information:
The authors wish to express our gratitude toward Direk-torat Riset dan Pengembangan Universitas Indonesia for their support through the PUTI Q3 Grant (contract number: NKB-2025/UN2.RST/HKP.05.00/2020).
Publisher Copyright:
© 2022 Tamkang University.
PY - 2022
Y1 - 2022
N2 - Construction and demolition waste from the whole planet are around 3 billion tons per year. Steel-based waste is one of the most significant which was estimated at about 10% of total construction waste. In this study, a catalyst derived from rebar flakes waste (RFW) was investigated for heterogeneous Fenton oxidation of methyl orange (MO) in water. The catalyst was characterized using Particle Size Analyzer, SEM-EDX analysis, XRD analysis, and AAS analysis. RFW catalyst contains 60.19% (in wt) of iron, in form of magnetite (Fe3O4), hematite (Fe2O3), and wustite (FeO). RFW catalyse Fenton oxidation of MO was investigated under various experimental conditions as follows: Catalyst dosage (0.5-1.5 g/L), oxidant dosage (3.3-26.4 mM), pollutant concentration (10-200 ppm), pH (2-4), and temperature (30-60_C). Decolourisation of MO was improved by high catalyst dosage, acidic solution, and high temperature. Decolourisation up to 97% in 3 hours was observed at 0.75 g/L RFW catalyst, 6.6 mM H2O2, solution pH at 3, and temperature at 60_C. Evaluation of iron leaching suggests that the Fenton oxidation of MO was due to the concomitant reaction of the heterogeneous and homogeneous pathway.
AB - Construction and demolition waste from the whole planet are around 3 billion tons per year. Steel-based waste is one of the most significant which was estimated at about 10% of total construction waste. In this study, a catalyst derived from rebar flakes waste (RFW) was investigated for heterogeneous Fenton oxidation of methyl orange (MO) in water. The catalyst was characterized using Particle Size Analyzer, SEM-EDX analysis, XRD analysis, and AAS analysis. RFW catalyst contains 60.19% (in wt) of iron, in form of magnetite (Fe3O4), hematite (Fe2O3), and wustite (FeO). RFW catalyse Fenton oxidation of MO was investigated under various experimental conditions as follows: Catalyst dosage (0.5-1.5 g/L), oxidant dosage (3.3-26.4 mM), pollutant concentration (10-200 ppm), pH (2-4), and temperature (30-60_C). Decolourisation of MO was improved by high catalyst dosage, acidic solution, and high temperature. Decolourisation up to 97% in 3 hours was observed at 0.75 g/L RFW catalyst, 6.6 mM H2O2, solution pH at 3, and temperature at 60_C. Evaluation of iron leaching suggests that the Fenton oxidation of MO was due to the concomitant reaction of the heterogeneous and homogeneous pathway.
KW - Advanced oxidation processes
KW - Construction waste
KW - Dye removal
KW - Fenton catalyst
KW - Operating parameters
UR - http://www.scopus.com/inward/record.url?scp=85118921992&partnerID=8YFLogxK
U2 - 10.6180/jase.202206_25(3).0003
DO - 10.6180/jase.202206_25(3).0003
M3 - Article
AN - SCOPUS:85118921992
SN - 2708-9967
VL - 25
SP - 381
EP - 388
JO - Journal of Applied Science and Engineering (Taiwan)
JF - Journal of Applied Science and Engineering (Taiwan)
IS - 3
ER -