Synthetic olive mill wastewater treatment by Fenton’s process in batch and continuous reactors operation

Esteves, Bruno M.; Rodrigues, Carmen S.D.; Madeira, Luís M.

doi:10.1007/s11356-017-0532-y

Cited by 37 publications

(23 citation statements)

References 40 publications

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“…It was observed that the first CSTR eliminate 30-45 % of the dye whereas the series of effect CSTR removes 70−85% of the dye. Esteves et al (2018) investigated the potential of CSTR to degrade total organic carbon (TOC) and total phenol (TPh) present in olive mill effluents using the Fenton oxidation process (continuous and batch mode).…”

Section: Continuous Stirred Tank Bioreactor (Cstr)mentioning

confidence: 99%

A comprehensive review on application of bioreactor for industrial wastewater treatment

Meena

Yadav

Sonigra

et al. 2021

Letters Applied Microbiology

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In the recent past, wastewater treatment processes perform a pivotal role in accordance to maintain the sustainable environment and health of mankind at a proper hygiene level. It has proven as indispensable by government regulations throughout the world due to the importance of preserving freshwater bodies. Human activities, predominantly from industrial sectors, generate an immeasurable amount of industrial wastewater loaded with toxic chemicals, which not only cause dreadful environmental problems but also leave harmful impacts on public health. Hence, industrial wastewater effluent must be treated before releasing into the environment to restrain the problems related to industrial wastewater discharge to the environment. Nowadays, biological wastewater treatment methods have been considered as an excellent approach for industrial wastewater treatment process because of their cost-effectiveness in the treatment, high efficiency, and their potential to counteract the drawbacks of conventional wastewater treatment methods. Recently, the treatment of industrial effluent through bioreactor has proven as one of the best methods from the presently available methods. Reactors are the principle part of any biotechnology-based method for microbial or enzymatic biodegradation, biotransformation, and bioremediation. This review aims to explore and compile the assessment of the most appropriate reactors, like, packed bed reactor, membrane bioreactor, rotating biological contactor, up-flow anaerobic sludge blanket reactor, photobioreactor, biological fluidized bed reactor, continuous stirred tank bioreactor, etc. that are extensively used for distinct industrial wastewater treatment.

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Section: Continuous Stirred Tank Bioreactor (Cstr)mentioning

confidence: 99%

A comprehensive review on application of bioreactor for industrial wastewater treatment

Meena

Yadav

Sonigra

et al. 2021

Letters Applied Microbiology

View full text Add to dashboard Cite

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“…The difference in pH value of the treated samples is due to the different effect of the individual treatments. Acidification of the solution in plasma treatment can be explained by the partial oxidation of the phenolic compounds into low molecular weight carboxylic acids, which predominantly occurs within the first stage of the Fenton process (Esteves et al 2018). In contrast, UV radiation treatment raises the pH due to the influence of different ions on the absorption of UV light and the reaction of undesirable substances with hydroxyl radicals.…”

Section: Physico-chemical Characteristicsmentioning

confidence: 99%

Advanced oxidation treatments of olive mill wastewater

et al. 2019

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New and innovative advanced oxidative processes for wastewater treatments are currently in the focus of scientific research and development for possible industrial implantation. The main aim of this study was to investigate the effect of cold plasma treatment, high intensity ultrasound and UV radiation with the addition of additives: H2O2, TiO2, FeCl3 x 6H2O on degradation and removal of complex organic compounds from olive mill wastewater (OMWW). Olive mill wastewater represents a potential ecological problem when it is raw disposed into the environment, because of its high organic load. OMWW samples (with and without additives) were treated by high-voltage plasma discharge at frequencies 60 Hz and 120 Hz in combination with pumped gases (nitrogen, air and oxygen) for 30 minutes, by UV radiation for 30 minutes and 10 minutes by high intensity ultrasound. Physico-chemical parameters of quality, chemical oxygen demand (COD), and total dissolved carbon (TOC) were determined. The results have shown the efficacy of plasma treatment in degradation of organic compounds as well as degradation and reduction of polyphenolic compounds. Reduction of colour and total dissolved carbon occurred in all treated samples, mostly with the addition of FeCl3 x 6H2O. Treatment with UV radiation and ultrasound proved to be the most efficient resulting in the 50% reduction of organic compounds after a 10-minute treatment.

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“…Esteves et al [41] proved the stability of the Fenton's process in continuous conditions using a continuous stirred tank reactor (CSTR) for the degradation of a phenolic mixture (vanillic, caffeic, gallic, 3,4-dihydroxyphenylacetic and coumaric acids, and tyrosol), mimicking the phenolic content of OMW. For a residence time of 120 min, [Fe 2+ ] = 100 ppm, [H 2 O 2 ] = 2.0 g/L, and T = 30 ºC, total organic carbon (TOC) and phenolic content removals of 47.5% and 96.9%, were obtained.…”

Section: Homogeneous Fenton's Processmentioning

confidence: 99%

Detoxification of Olive Mill Wastewaters by Fenton’s Process

et al. 2018

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Olive mill wastewaters (OMW) constitute an environmental problem affecting mainly Mediterranean Sea area countries where the olive mill industry is a very important economic sector. The strong impact and management issues of these effluents are mainly due to their seasonality, localized production, and high organic load with high toxic features and low biodegradability. As the olive oil industry is highly water demanding, the search for suitable water recovery strategies requires the development and optimization of advanced treatment technologies. The classical Fenton’s process is an interesting alternative, as it operates at room conditions of pressure and temperature. However, it shows some drawbacks, such as the generation of iron sludges, which require further management. Nevertheless, because of its features that make it industrially desirable, overcoming these limitations has been the focus of researchers in the last years. Bearing this in mind, this paper focuses on the recent research regarding OMW treatment using Fenton’s process. The use of Fenton’s peroxidation treatment at homogenous, heterogeneous, and photo-aided conditions is analysed. The use of solid catalysts may be an interesting way to avoid sludge formation. Light-driven Fenton can also reduce the amount of iron needed for effective degradation. Moreover, Fenton’s process integration in combined treatment schemes is discussed. Finally, remarks regarding its application at full scale are given.

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Synthetic olive mill wastewater treatment by Fenton’s process in batch and continuous reactors operation

Cited by 37 publications

References 40 publications

A comprehensive review on application of bioreactor for industrial wastewater treatment

A comprehensive review on application of bioreactor for industrial wastewater treatment

Advanced oxidation treatments of olive mill wastewater

Detoxification of Olive Mill Wastewaters by Fenton’s Process

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