Chloroperoxidase mediated oxidation of chlorinated phenols using electrogenerated hydrogen peroxide

H., Camilo E. La Rotta; elia, Eliane D; Bon, Elba P. S.

doi:10.2225/vol10-issue1-fulltext-5

Cited by 22 publications

(4 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In our study, D. stramonium was cultivated in a hydroponic environment and plants developed at the end of experiment and samples of the hydroponic medium containing 2,4-DCP were taken and the remediation rates for 2,4-DCP were evaluated compared to initial concentrations. With this aim, preliminary studies used the 4-amino antipyrine method stated in standard methods for spectrophotometry [16][17]. Firstly, the calibration curve for 2,4-DCP was drawn (Figure 1), and analyses were performed according to the direct photometric method.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Investigating Usage Potential of Datura stramonium L. for Phytoremediation of 2,4-Dichlorophenol

Ceylan

Moharramzadeh

Atıcı

2021

Hacettepe Journal of Biology and Chemistry

View full text Add to dashboard Cite

B u çalışmada, Datura stramonium L. (boru çiçeği) bitkisinin toprak ve sulak alanlardan 2,4-Diklorofenolün (2,4-DKF) fitoremediasyon potansiyeli araştırıldı. Hidroponik sistemde büyütülen fidelerin yetişme ortamı 2,4-DKF'nin farklı konsantrasyonlarına (0.0, 75, 100, 125, 150, 175, 200, 225, 250 ve 275 ppm) ayarlandı. Dört gün sonra, yetişme ortamında 2,4-DKF'nin remediasyon oranı, bitkilerin kök-gövde uzunluğu, kök-gövde kuru ağırlığı, lipid peroksidasyonu (LPO), protein ve fotosentetik pigmentlerin içeriği belirlendi. D. stramonium fideleri çalışılan tüm konsantrasyonlarda 2,4-DKF'nin remediasyonunu %52-78 oranlarında sağladı. Ayrıca 2,4-DKF uygulamaları, fidelerin kök ve gövde uzunlukları ile kuru ağırlıklarını, kontrollerine göre, özellikle 200-275 ppm gibi yüksek dozlarda genelde hafif derecede inhibe ederken, düşük dozlarda etkilemedi. Uygulamalar, genelde (LPO) ve protein içeriğini hafif derecede artırırken, yaprak klorofil içeriğini etkilememiştir. Bulgular, D. stramonium'un 2,4-DKF'nin fitoremediasyonunda kullanılabilme potansiyelinin yüksek olduğunu göstermektedir.

show abstract

Section: Resultsmentioning

confidence: 99%

“…A standard graph previously prepared with known amounts of 2,4-DCP was used to determine the amount of 2,4-DCP as mg/mL in the samples. The initial (control) values were subtracted from the obtained results to calculate removal efficiency [16][17].…”

Section: Plant Materials and Cultivation Conditionsmentioning

confidence: 99%

Investigating Usage Potential of Datura stramonium L. for Phytoremediation of 2,4-Dichlorophenol

Ceylan

Moharramzadeh

Atıcı

2021

Hacettepe Journal of Biology and Chemistry

View full text Add to dashboard Cite

show abstract

“…Using H 2 O 2 as a preservative in milk and as a bleaching agent in the sugar industry is also very popular. Finally, H 2 O 2 is used in advanced oxidation processes (AOPs) for wastewater treatment to remove pollutants such as phenolic compounds. − However, residual H 2 O 2 present in the food or wastewater discharge is undesirable since it may cause adverse health effects or harm the ecosystem. , For example, fish and fish eggs can easily die if they are exposed to 50 ppm of H 2 O 2 for 15 min. Some microorganisms and zooplankton in aquatic ecosystems are even more sensitive to H 2 O 2 .…”

Section: Introductionmentioning

confidence: 99%

A Millifluidic Device with Embedded Cross-Linked Enzyme Aggregates for Degradation of H₂O₂

Jannat

Yang

2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Millifluidic devices decorated with enzymes have been used for enzymatic reactions in continuous processes, but low enzymatic activity and enzyme leaching remain as challenges. Herein, we develop a strategy to embed cross-linked enzyme aggregates (CLEAs) on the surfaces of millifluidic devices to achieve higher enzymatic activity and better stability. Catalase was chosen as a model enzyme to degrade H2O2 in wastewater samples. First, CLEA of catalase (153 ± 10 nm) was formed by simultaneous precipitation and cross-linking with 25.0 wt % acetonitrile containing 0.025 wt % glutaraldehyde in a millifluidic device. To immobilize CLEA, we first swell a piece of plastic tubing by using 5.0 wt % acetonitrile and then immerse it in an aqueous solution with 5.0 wt % (3-aminopropyl)triethoxysilane (APTES) and 5.0 wt % dextran polyaldehyde (DPA) subsequently. After CLEA is absorbed inside the expanded polymer network of the tubing, the tubing is tightened by using a vacuum to secure the immobilized CLEA. The millifluidic device decorated with CLEA of catalase has total activity of 660 U for degradation of H2O2, and it shows good stability under a flow rate of 200 μL/min. The tubing can be used to degrade 0.1 wt % H2O2 solution continuously for 3 h or remove 2 wt % residual H2O2 in wastewater for 2 h. The technique is general enough and can be applied to other types of enzymes for continuous enzymatic reactions.

show abstract

“…[7][8][9] Owing to the disadvantages of scarcity, cost, and the poisoning issue caused by carbon monoxide for platinum nanoparticles in the ORR, 10 the utilization of nitrogendoped carbons in various forms for this application has attracted significant attention. On the other hand, the selective generation of H 2 O 2 on these nitrogen-doped carbon materials is also of great interest, 11,12 with great promise for removing organic pollutants in waste water [13][14][15][16] and etching Ti and TiW layers 17 in the flip-chip technology for microchip packaging and high-level assembly. However, to the best of our knowledge, there is a lack of research focusing on finding the key synthesis factors in order to effectively control the electron transfer number of the ORR for specified applications.…”

mentioning

confidence: 99%

Electron Transfer Number Control of the Oxygen Reduction Reaction on Nitrogen-Doped Reduced-Graphene Oxides Using Experimental Design Strategies

Liu

et al. 2013

J. Electrochem. Soc.

View full text Add to dashboard Cite

Due to the important applications in metal-air batteries and in the photo- electrochemical catalytic decomposition of organics, the electron transfer number (n) of the oxygen reduction reaction (ORR) on N-doped reduced-graphene oxide (N-RGO) is precisely controlled and predicted by combining the studies of factorial design (FD) and the path of the steepest ascent/descent (PSA/PSD). Here, n is selected as the response variable to make the ORR undergo either the two-electron or four-electron transfer mechanism. Based on the FD study, n is mainly determined by microwave power and N-doping temperature. By varying the above two factors simultaneously, n of the ORR varying from ca. 2.6 to 3.8 can be precisely controlled. In the X-ray photoelectron spectroscopic (XPS) analysis, the pyrrolic-nitrogen structure has been confirmed to be the main nitrogen structure affecting the selectivity of the ORR. The N-RGO preferring to the two-electron ORR process can be used to generate H2O2 for photo-electrochemical catalytic degradation of organics. The N-RGO with n of the ORR close to 4 will be employed in the aqueous metal-air batteries.

show abstract

Chloroperoxidase mediated oxidation of chlorinated phenols using electrogenerated hydrogen peroxide

Cited by 22 publications

References 18 publications

Investigating Usage Potential of Datura stramonium L. for Phytoremediation of 2,4-Dichlorophenol

Investigating Usage Potential of Datura stramonium L. for Phytoremediation of 2,4-Dichlorophenol

A Millifluidic Device with Embedded Cross-Linked Enzyme Aggregates for Degradation of H₂O₂

Electron Transfer Number Control of the Oxygen Reduction Reaction on Nitrogen-Doped Reduced-Graphene Oxides Using Experimental Design Strategies

Contact Info

Product

Resources

About

Chloroperoxidase mediated oxidation of chlorinated phenols using electrogenerated hydrogen peroxide

Cited by 22 publications

References 18 publications

Investigating Usage Potential of Datura stramonium L. for Phytoremediation of 2,4-Dichlorophenol

Investigating Usage Potential of Datura stramonium L. for Phytoremediation of 2,4-Dichlorophenol

A Millifluidic Device with Embedded Cross-Linked Enzyme Aggregates for Degradation of H2O2

Electron Transfer Number Control of the Oxygen Reduction Reaction on Nitrogen-Doped Reduced-Graphene Oxides Using Experimental Design Strategies

Contact Info

Product

Resources

About

A Millifluidic Device with Embedded Cross-Linked Enzyme Aggregates for Degradation of H₂O₂