Carbon-supported manganese for heterogeneous activation of peroxymonosulfate for the decomposition of phenol in aqueous solutions

Saputra, Edy; Pinem, Jhon Armedi; Budihardjo, Mochamad Arief; Utama, Panca Setia; Wang, Shaobin

doi:10.1016/j.mtchem.2020.100268

Cited by 10 publications

(6 citation statements)

References 26 publications

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“…By increasing the catalyst dose to 100 mg/L, the active sites of the catalyst probably decreased due to clot formation and the available surface area of the catalyst, thus reducing the phenol removal e ciency at high catalyst doses (Liu et al 2021). The results reported by researchers such as (Liu et al 2021) and (Saputra et al 2020) con rm our work.…”

Section: Effect Of Catalyst Masssupporting

confidence: 90%

“…The correlation coe cient (R 2 ) for all concentrations was higher than 0.94, which indicates that in the studied system, the data suitably t the rst-order kinetics. Also, with increasing phenol concentration, the reaction proceeded at a slower rate (Saputra et al 2020). The results of studies by other researchers for phenol degradation followed rst-order kinetics (Li et al 2020, Othman et al 2020, Saputra et al 2020, Vaiano et al 2018.…”

Section: Effect Of Phenol Concentrationmentioning

confidence: 80%

“…Also, with increasing phenol concentration, the reaction proceeded at a slower rate (Saputra et al 2020). The results of studies by other researchers for phenol degradation followed rst-order kinetics (Li et al 2020, Othman et al 2020, Saputra et al 2020, Vaiano et al 2018.…”

Section: Effect Of Phenol Concentrationmentioning

confidence: 80%

“…•radicals produced with increasing phenol concentration, the amount of exposure to SO 4 •radicals decreases, resulting in a decrease in phenol removal (Saputra et al 2020). In the study of phenol removal from aqueous solutions by MnO x /PMS system, the highest phenol removal e ciency was 100% at 25 mg/L for 60 min and the lowest was 75% at 100 mg/L after 120 min.…”

Section: Effect Of Phenol Concentrationmentioning

confidence: 99%

“…(Saputra et al 2013). In the decomposition of phenol from aqueous solutions by MnO x /ACP/PMS system, removal of 100% phenol, at a concentration of 50 mg/L after 10 min and a concentration of 75 mg/L and 100 mg/L for a period of 30 min and 90 min were obtained (Saputra et al 2020). Various researchers have stated that the rate of phenol decomposition decreases with increasing concentration and the solution to this challenge is to increase the reaction time.…”

Section: Effect Of Phenol Concentrationmentioning

confidence: 99%

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Application of Pier Waste Sludge for Catalytic Activation of Proxy-monosulfate and Phenol Elimination From a Petrochemical Wastewater

Khoshtinat

Tabatabaie

Ramavandi

et al. 2021

Preprint

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This investigation aimed to remove phenol from a real wastewater (taken from a petrochemical company) by activating peroxy-monosulfate (PMS) using catalysts extracted from pier waste sludge. The physical and chemical properties of the catalyst were evaluated by FE-SEM/EDS, XRD, FTIR, and TGA/DTG tests. The functional groups of O-H, C-H, CO32-, C-H, C-O, N-H, and C-N were identified on the catalyst surface. Also, the crystallinity of the catalyst before and after reaction with petrochemical wastewater was 103.4 nm and 55.8 nm, respectively. Operational parameters of pH (3-9), catalyst dose (0-100 mg/L), phenol concentration (50-250 mg/L), and PMS concentration (0-250 mg/L) were tested to remove phenol. The highest phenol removal rate (94%) was obtained at pH=3, catalyst dose of 80 mg/L, phenol concentration of 50 mg/L, PMS concentration of 150 mg/L, and contact time of 150 min. Phenol decomposition in petrochemical wastewater followed the first-order kinetics (k> 0.008 min-1, R2> 0.94). Based on the reported results, it was found that the pH factor is more important than other factors in phenol removal. The catalyst stability test was performed for up to five cycles and phenol removal in the fifth cycle was reduced to 42%. Also, the energy consumption in this study was 77.69 kw.h/m3. According to the results, the pier waste sludge catalyst/PMS system is a critical process for eliminating phenol from petrochemical wastewater.

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Section: Effect Of Catalyst Masssupporting

confidence: 90%