Application of integrated ozone and granular activated carbon for decolorization and chemical oxygen demand reduction of vinasse from alcohol distilleries

Hadavifar, Mojtaba; Younesi, Habibollah; Zinatizadeh, Ali Akbar; Mahdad, Faezeh; Li, Qin; Ghasemi, Zahra

doi:10.1016/j.jenvman.2016.01.009

Cited by 30 publications

(5 citation statements)

References 34 publications

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“…In this process, pH was a key operational parameter. Fe-based catalyst could possess a high activity at pH 6-9 [74][75][76]. On the contrary, at pH 6, many molecular ozone and little CO 3 2− existed in the weakly acidic solution, which led to better COD removal.…”

Section: Iron Oxidesmentioning

confidence: 99%

Application of Heterogeneous Catalytic Ozonation for Refractory Organics in Wastewater

et al. 2019

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Catalytic ozonation is believed to belong to advanced oxidation processes (AOPs). Over the past decades, heterogeneous catalytic ozonation has received remarkable attention as an effective process for the degradation of refractory organics in wastewater, which can overcome some disadvantages of ozonation alone. Metal oxides, metals, and metal oxides supported on oxides, minerals modified with metals, and carbon materials are widely used as catalysts in heterogeneous catalytic ozonation processes due to their excellent catalytic ability. An understanding of the application can provide theoretical support for selecting suitable catalysts aimed at different kinds of wastewater to obtain higher pollutant removal efficiency. Therefore, the main objective of this review article is to provide a summary of the accomplishments concerning catalytic ozonation to point to the major directions for choosing the catalysts in catalytic ozonation in the future.

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Section: Iron Oxidesmentioning

confidence: 99%

Application of Heterogeneous Catalytic Ozonation for Refractory Organics in Wastewater

et al. 2019

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“…As seen in Figure , the highest S/N ratio was determined at pH 10 while the lowest S/N ratio was at pH 7. It is known that increasing ozone decomposition at higher pH values causes enhancement of the ozone utilization rates . The solubility and decomposition rate of ozone are affected by temperature.…”

Section: Resultsmentioning

confidence: 99%

Application of experimental design method for advanced treatment of dairy wastewater by ozonation

Kaya

Gönder

Vergili

et al. 2018

Env Prog and Sustain Energy

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In this study, application of experimental design method for ozonation of dairy wastewater was investigated. The Taguchi systematic method was used in the planning stage of experimental approach. The experimental design was applied using L9 orthogonal array with three factors and three levels. The optimum experiment conditions were determined for pH, temperature and ozone contact time for ozonation process. Analysis of variance (ANOVA) analyses based on the Taguchi approach was performed both for statistical evaluation of the results and determination of the influence and relative importance of the factors on removal efficiencies. The optimal experimental condition for DFZ436 parameter was determined as 10 for pH, 25°C for temperature and 15 min for ozone contact time. Relative importance of experimental factors on DFZ436 removal performance is evaluated by ANOVA analysis, and the order of the factors was determined as; ozone contact time > pH » temperature. According to the confirmation experiment conducted under the optimum conditions, removal efficiency for DFZ436 was determined as 88%, which was close to the predicted value of 85%. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13025, 2019

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“…The results showed that 100% of color and COD removal could be achieved by ozone-electrocoagulation process with an energy consumption of 5.7 kWh/m 3 during four hours of reaction time. Hadavifar et al [62] carried out the treatment of distillery wastewater in a hybrid reactor that combined ozone oxidation and adsorption by granular AC. This resulted in 74.23% of COD removal and 68% of color removal at pH of 2.…”

Section: Advanced Oxidationmentioning

confidence: 99%

Distillery Stillage: Characteristics, Treatment, and Valorization

Mikucka

Zielińska

2020

Appl Biochem Biotechnol

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Distilleries are among the most polluting industries because ethanol fermentation results in the discharge of large quantities of high-strength liquid effluents with high concentrations of organic matter and nitrogen compounds, low pH, high temperature, dark brown color, and high salinity. The most common method of managing this wastewater (distillery stillage) is to use it for soil conditioning, but this requires thickening the wastewater and may cause soil pollution due to its high nitrogen content. Therefore, treatment of distillery stillage is preferable. This review discusses individual biological and physico-chemical treatment methods and combined technologies. In addition, special attention is paid to valorization of distillery stillage, which is a valuable source of polysaccharides and volatile fatty acids (VFAs), as well as natural antioxidants, including polyphenols and other bioactive compounds of interest to the pharmaceutical, cosmetic, and food industries. New directions in improvement of valorization technologies are highlighted, including the search for new eutectic solvents for extracting these compounds. Such technologies are essential for sustainable development, which requires the use of management and valorization strategies for recovery of valuable compounds with minimal disposal of waste streams.

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Application of integrated ozone and granular activated carbon for decolorization and chemical oxygen demand reduction of vinasse from alcohol distilleries

Cited by 30 publications

References 34 publications

Application of Heterogeneous Catalytic Ozonation for Refractory Organics in Wastewater

Application of Heterogeneous Catalytic Ozonation for Refractory Organics in Wastewater

Application of experimental design method for advanced treatment of dairy wastewater by ozonation

Distillery Stillage: Characteristics, Treatment, and Valorization

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