Effect of Precursors on Morphology and Catalytic Activities of Birnessite for Methylene Blue Degradation

Zulfa, Riana; Absus, Suharsimi; Awaluddin, Amir; Anita, Sofia; Siregar, Siti Saidah; Zulfikri,

doi:10.1088/1742-6596/1097/1/012051

Cited by 6 publications

(2 citation statements)

References 20 publications

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“…Nonetheless, these results need to improve degradation time due to the efficiency and effectiveness of time and energy. The different method even reported that dyes degradation by using AOP method only need 120 minutes to oxidize methylene blue into benign products such as CO2 and H2O (Zulfa et al 2018).…”

Section: Discussionmentioning

confidence: 99%

Methylene blue decolorization fungi from crude oil contaminated soils

2019

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Abstract. Permana I, Awaluddin A, Saryono. 2019. Methylene blue decolorization fungi from crude oil-contaminated soils. Biodiversitas 20: 2693-2697. One of the world problems is the treatment to remove dyes in textile wastewater. Nowadays, the most effective and compatible method to the environment is decolorization by microorganisms. Therefore, the objective of this study is to find out the best fungi to decolorize synthetic dye methylene blue (MB). Total eight fungi that isolated from crude oil-contaminated soil were analyzed to study the effect of various parameters such as pH, the concentration of dyes, contact times and agitation on their rate of reaction. The initial screening showed that Penicillium sp. FTM7 had greater potential in biodegradation the MB. The optimum decolorization of MB by Penicillium sp. was found after 8 days incubation with agitation 150 rpm and concentration of MB is 40 ppm and unadjusted pH (95.45%). The decolorization of MB was found to follow first-order reactions.

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Section: Discussionmentioning

confidence: 99%

Methylene blue decolorization fungi from crude oil contaminated soils

2019

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“…The concentration of acid seems to play a crucial role in determining the phase of manganese oxide, whereas the type of acid is responsible for the particle size of as-synthesized manganese oxide. precipitation method [8]. The as-synthesized δ-MnO2from these two different reducing agents have different crystallinity, morphology, Mn 4+/ Mn 3+ ratios and surface charges that affect the catalytic activities.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Study on COD Removal on the Treatment of Palm Oil Mill Effluent (POME) Using Birnessite-Type Manganese Oxide via a Solvent-Free Method

Awaluddin¹,

Sonia²,

Muhdarina³

et al. 2021

Advances in Social Science, Education and Humanities Research

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Palm oil mill effluent (POME) has an adverse effect on the environment due to its high toxicity, low pH, and high chemical and biological oxygen demand. The degradation using Fenton processes is considered as an attractive and sustainable way for the treatment of POME. In this study, as-synthesized birnessite-type manganese oxide was used as the Fenton catalyst for the treatment of POME. This oxide is a typical manganese oxide with an octahedral layered structured and was synthesized from the reduction of MnO4‾ using simple sugar (glucose) as a reducing agent by a solvent-free method. The characterization of the oxide was carried out using X-Ray Diffraction (XRD), Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDX), and Surface Area Analyzer (SAA). The characterization results indicated the birnessite-type manganese oxide with a well-crystalline structure, irregular shapes of morphology, and surface area of 4.180 m 2 /g. The degradation studies revealed that H2O2 concentration plays a key role in the COD removal of the POME. The maximum reduction in COD removal was 62% in 45 minutes of reaction with the catalyst concentration of 400mg/L and 10 ml of H2O2.

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pH-Control of Oxidative Degradation of Methylene Blue Over Octahedral Molecular Sieve Cryptomelane-Type Manganese Oxide (OMS-2) and Fe-OMS-2

Sandra

Muhdarina

Siregar

et al. 2019

J. Phys.: Conf. Ser.

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The octahedral molecular sieve cryptomelane-type manganese oxide (OMS-2) and Fe-doped OMS-2 (1%, 5%, 10%) were successfully synthesized by the redox reaction between KMnO4 and citric acid using the sol-gel method. The sol products were heated at 120°C and followed by calcination at 600°C. The as-synthesized pristine manganese oxide and Fe-OMS-2 were then characterized by XRD to determine their crystallinity and phase structure. The XRD results indicated that both the pristine and Fe-doped manganese oxides produced tunnel cryptomelane-type manganese oxides. No other peaks due to other phases are detected, indicating that Fe ions are well distributed in the framework of cryptomelane. The oxidative activities, either the pristine and Fe-OMS-2, were evaluated for degradation of methylene blue (MB) at pH ranges 2-6 by the addition of HCl solution. The oxidative tests showed that the oxidative degradation of methylene blue greatly increase with a decrease in solution pH and decrease with an increase in concentration Fe species in Fe-OMS-2 compared to pristine cryptomelane.

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Effect of Precursors on Morphology and Catalytic Activities of Birnessite for Methylene Blue Degradation

Cited by 6 publications

References 20 publications

Methylene blue decolorization fungi from crude oil contaminated soils

Methylene blue decolorization fungi from crude oil contaminated soils

Preliminary Study on COD Removal on the Treatment of Palm Oil Mill Effluent (POME) Using Birnessite-Type Manganese Oxide via a Solvent-Free Method

pH-Control of Oxidative Degradation of Methylene Blue Over Octahedral Molecular Sieve Cryptomelane-Type Manganese Oxide (OMS-2) and Fe-OMS-2

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