Showing papers in "Ozone-science & Engineering in 2018"
TL;DR: In this paper, the authors investigated the performance of associated wastewater treatments of coagulation-flocculation/adsorption (CF-ADS) and coagulated-fluorocarcoagulation/ozonation (OZ) for the re...
Abstract: This study is based on the investigation of performance of associated wastewater treatments of coagulation-flocculation/adsorption (CF-ADS) and coagulation-flocculation/ozonation (CF-OZ) for the re...
52 citations
TL;DR: Ozone has proven effective in improving water treatment plant performance, increasing customer satisfaction, and meeting increasingly stringent regulatory requirements as discussed by the authors, and the benefits include disinfeasibility, reliability, and customer satisfaction.
Abstract: Ozone has proven effective in improving water treatment plant performance, increasing customer satisfaction, and meeting increasingly stringent regulatory requirements. The benefits include disinfe...
33 citations
TL;DR: In this paper, a combination of non-thermal hurdles (ozone 1.2g/h, 10min, and lactic acid 0.5g/H) was used to preserve microbial and sensory quality of sugarcane juice during 1-month storage under refrigerated conditions; however, additional hurdles may be required for extended storage.
Abstract: Thermal processing is the most widely adopted technology for preservation of juices; however, it is associated with significant changes in nutritional quality and flavor. Combination of nonthermal hurdles (ozone 1.2 g/h, 10 min, and lactic acid 0.5%) reduced total bacterial count of sugarcane juice by 4.3 log and controlled enzymatic activity to a moderate level (reduction of 60% and 72% activity of polyphenol oxidase and peroxidase, respectively). Combined treatment was comparable to thermal treatment in maintaining microbial and sensory quality of sugarcane juice during 1-month storage under refrigerated conditions; however, additional hurdles may be required for extended storage.
32 citations
TL;DR: In this paper, ozone oxidation of the antibiotics amoxicillin (AMX), cephalexin, and ceftriaxone was investigated in different samples: (i) aqueous solutions (100mg L−1), (ii) an industrial wastewa...
Abstract: In this work, ozone oxidation of the antibiotics amoxicillin (AMX), cephalexin, and ceftriaxone was investigated in different samples: (i) aqueous solutions (100 mg L−1), (ii) an industrial wastewa...
28 citations
TL;DR: In this article, the competition between ozone reactions with 72 water emerging or priority contaminants (pharmaceuticals, pesticicides, etc.) was analyzed using concepts derived from the gas-liquid absorption film model.
Abstract: From the application of concepts derived from the gas-liquid absorption film model, the competition between ozone reactions with 72 water emerging or priority contaminants (pharmaceuticals, pestici...
27 citations
TL;DR: The first issue of Ozone: Science & Engineering (OS&E) was published in early 1979 with Dr. L. Bollyky as the Editor-in-Chief as mentioned in this paper.
Abstract: The first issue of Ozone: Science & Engineering (OS&E) was published in early 1979 with Dr. L. J. Bollyky as the Editor-in-Chief. This was a milestone for the International Ozone Association enabling professional recognition of the advances in ozone technology. Since this first issue, 40 volumes of Ozone: Science & Engineering have been published containing 208 individual issues, 1463 technical articles and nearly 19,000 pages. Dr. Rip Rice became Editor-in-Chief in 1985 and continued this position until 1998. Barry Loeb has been the Editor since. Under the leadership of these gentlemen, OS&E expanded from about 70 pages per issue four times per year to 100 pages, then to six issues per year, at about 100 pages. In 2001 the dimensions of the journal were increased to accommodate even more manuscripts. In 1989, the Harvey M. Rosen Memorial Award was established to recognize the “best paper” published in Ozone: Science & Engineering during the two-year period between World Congresses. The selection ...
26 citations
TL;DR: In this article, the potential of the ozone-enriched atmosphere for the improvement of the shelf life of apples of Gloster variety (Malus domestica) in cold storage was investigated.
Abstract: The potential of the ozone-enriched atmosphere for the improvement of the shelf life of apples of Gloster variety (Malus domestica) in cold storage was investigated. The storage experiment was cond...
25 citations
TL;DR: In this article, a novel system of catalytic ozonation coupling with activated carbon adsorption for removing the organic compounds treating in the RO concentrate from coal gasification wastewate was reported.
Abstract: This paper reports a novel system of catalytic ozonation coupling with activated carbon adsorption for removing the organic compounds treating in the RO concentrate from coal gasification wastewate...
24 citations
TL;DR: In this paper, the effects of different pulse modes of the power supply on ozone production from air were studied, including single positive, negative as well as the bipolar voltage pulses (positive-negative) modes.
Abstract: This research aims to study the effects of different pulse modes of the power supply on ozone production from air. Single positive, negative as well as the bipolar voltage pulses (positive–negative...
24 citations
TL;DR: In this paper, an ozonation process was used to increase biodegradability of textile wastewater by considering chemical oxygen demand (COD) and color removal, and the response surface methodology was applied.
Abstract: In this study, an ozonation process was used to increase biodegradability of textile wastewater by considering chemical oxygen demand (COD) and color removal. Response surface methodology was appli...
23 citations
TL;DR: The impact of gaseous ozone on pH, °Brix, titratable acidity, and optical and rheological properties of fresh squeezed peach juice was investigated in this paper.
Abstract: The impact of gaseous ozone on pH, °Brix, titratable acidity, and optical and rheological properties of fresh squeezed peach juice was investigated. Peach juice was exposed to ozone (0.06–2.48 g. L...
TL;DR: In this paper, yarns of cotton, lyocell and PET treated with color fading ozonation are compared to other ozone applications as it is employed with distinctive parameters and on special products.
Abstract: Denim color fading ozonation is dissimilar from other ozone applications as it is employed with distinctive parameters and on special products. In this study, yarns of cotton, lyocell and PET treat...
TL;DR: In this article, the removal of benzophenone-2 (BP-2) with the use of a UV filter was studied in the aquatic environment with greater estrogenic toxicity, and the results showed that BP-2 can be removed with the help of the UV filter.
Abstract: Benzophenone-2 (BP-2) is an important type of UV filter that has been widely used and detected in the aquatic environment with greater estrogenic toxicity. In our work, the removal of BP-2 with the...
TL;DR: In this paper, the authors used ozone (O3) and combined ozone/ultraviolet (O 3/UV) processes for color removal and caffeine degradation from synthetic coffee wastewater using a second-order response.
Abstract: This paper reports a study using ozone (O3) and combined ozone/ultraviolet (O3/UV) processes for color removal and caffeine degradation from synthetic coffee wastewater using a second-order respons...
TL;DR: In this paper, the degradation of phenol in aqueous solution was investigated in an integrated process consisting of O3/Ca(OH)2 system and a newly developed micro bubble gas-liquid reactor.
Abstract: The degradation of phenol in aqueous solution was investigated in an integrated process consisting of O3/Ca(OH)2 system and a newly developed micro bubble gas-liquid reactor. The effects of operati...
TL;DR: In this article, the degradation rate of carbamazepine (CBZ) was studied for various combination of O3 dosage ranging from 4.8 to 14.4 mg/h and UV intensities with varying intensity and wavelength (UVC: λ = 254nm and UVA: 352nm).
Abstract: This article presents the results of an investigation into the function of UV in a photo-assisted ozonation process for treatment of carbamazepine (CBZ) in treated domestic wastewaters. Experiments were conducted on synthetic spiked water and secondary treated municipal wastewater. Degradation of CBZ was studied for various combination of O3 dosage ranging from 4.8 to 14.4 mg/h and UV intensities with varying intensity and wavelength (UVC: λ = 254 nm and UVA: 352 nm). In synthetic spiked water, CBZ was degraded to below detectable limits within 0.5 min for ozone dose of 14.4 mg/h. The rate of degradation of CBZ increased exponentially with increase in ozone dose following a zero-order rate at each dose level. The degradation rate of CBZ in wastewater was slower compared to deionized water (DI) water by 40–75% for various doses of ozone, presumably due to the presence of organic matter remaining in treated wastewater. Optimal UV intensities for UVA and UVC were obtained as 0.62 and 0.82 mW/cm2 for ...
TL;DR: In this article, the effect of ozonated water at different temperatures (4 °C and 15 °C) on the microbiological, color and sensory properties of lettuce was investigated.
Abstract: The present study was carried out to determine the effect of ozonated water (2 mg L−1) at different temperatures (4 °C and 15 °C) on the microbiological, color and sensory properties of lettuce. Co...
TL;DR: In this article, the authors developed a new kind of catalyst besides the usually used MnO2 for ozone decomposition, the sub-micrometer spherical MnCO3 was prepared via a facile co-precipitation method without additive agents at room temperature and characterized by XRD, BET, SEM, TGA, XPS and H2-TPR.
Abstract: Ozone is an ubiquitous air pollutant. To develop a new kind of catalyst besides the usually used MnO2 for ozone decomposition, the sub-micrometer spherical MnCO3 was prepared via a facile co-precipitation method without additive agents at room temperature and characterized by XRD, BET, SEM, TGA, XPS and H2-TPR. As-prepared MnCO3 showed better catalytic activity for ozone decomposition than that of α-MnO2, which is frequently studied in the literature. Amorphous MnOx was found on the MnCO3 surface, and it further formed when MnCO3 was exposed to the ozone flow. The MnOx layer is regarded as the active component in the catalytic ozone decomposition and crystalline MnCO3 serves as the support-stabilizing MnOx surface phase. Then MnCO3 powder was supported on non-woven fabrics through a simple and low-cost impregnation method. The MnCO3-based non-woven fabrics exhibited 100% ozone conversion over 8 days at 25 °C with inlet ozone concentration 14 ppm and space velocity 42,000 h−1. This provides an alte...
TL;DR: The effects of using ultraviolet irradiation (UV), ozone (O3) and the combined O3-UV advanced oxidation process (AOP) on humic acid (HA), which is regarded as the main disinfection by-products (DBP) are discussed in this article.
Abstract: The effects of using ultraviolet irradiation (UV), ozone (O3) and the combined O3-UV advanced oxidation process (AOP) on humic acid (HA), which is regarded as the main disinfection by-products (DBP...
TL;DR: In this paper, the effects of ozone fumigation on pesticides residue degradation in dried chilies while maintaining its qualities were investigated. But the results were limited to a single batch of chilies with a gas rate of 5.5 grams/h.
Abstract: The objective of this work was to study the effects of ozone fumigation on pesticides’ residue degradation in dried chilies while maintaining its qualities. Gaseous ozone with a gas rate of 5.5 g/h...
TL;DR: Ozone is a potential alternative to commercial fumigants and has been used in the development of ozone fumigation technology for insects control as mentioned in this paper, which requires precise prediction of the distribution of introduced ozone ga...
Abstract: Ozone is a potential alternative to commercial fumigants. The development of ozone fumigation technology for insects control requires a precise prediction of the distribution of introduced ozone ga...
TL;DR: Decontamination of Aspergillus flavus spores in inoculated extruded food (Standard and Super-Premium types), through ozone (O3) gas, was investigated at different concentrations (40 and 60 µmol/mol) as mentioned in this paper.
Abstract: Decontamination of Aspergillus flavus spores in inoculated extruded food (Standard and Super-Premium types), through ozone (O3) gas, was investigated at different concentrations (40 and 60 µmol/mol...
TL;DR: Based on an alpha power transformation method developed in Mahdavi and Kundu as discussed by the authors, Dey and Alzaatreh proposed an algorithm for power transformation based on communication in statistics-theory and methods.
Abstract: Based on an alpha power transformation method developed in Mahdavi and Kundu [Communications in Statistics–Theory and Methods, 46, 2017, doi: 10.1080/03610926.2015.1130839], Dey, Alzaatreh,...
TL;DR: In this article, the effects of ozone bleaching of wheat straw soda pulp on three pulp parameters (kappa number, brightness, and viscosity) were determined using Plackett-Burman experimental design.
Abstract: Laboratory-scale studies were carried out on ozone bleaching of wheat straw soda pulp. Effects of five variables—pH, consistency, time, temperature, and ozone dose—on three pulp parameters— kappa number, brightness, and viscosity–were determined using Plackett–Burman experimental design. Results showed that for the parameter kappa number of pulp, ozone dose is the most important factor followed by pH and consistency. Pulp parameter viscosity is affected by factor pH, followed by consistency and ozone dose. Brightness of the wheat straw pulp mostly depends on factor ozone dose, followed by pH.
TL;DR: In this article, the degradation of acid black 210 (AB-210) dye in aqueous solution by ozonation (O3) and with ultraviolet (UV) was studied.
Abstract: Acid Black 210 (AB-210) dye is one of the most black dyes used by the leather industry. In the present work, AB-210 degradation in aqueous solution by ozonation (O3) and ozonation with ultraviolet ...
TL;DR: The efficacy of ozonation in different seawater conditions provides an improvement in the water quality and promotes the increment of dissolved oxygen and by-products (bromine, bromate, and bromoform) formation is directly proportional to theozonation time.
Abstract: The efficacy of ozonation in different seawater conditions provides an improvement in the water quality and promotes the increment of dissolved oxygen. By-products (bromine, bromate, and bromoform)...
TL;DR: In this article, the authors evaluated the dose dependent use of ozonated olive oil for wound healing and showed that it can be used topically for healing cutenous wounds.
Abstract: Previous studies have shown that ozonated vegetable oils have been used topically for healing of cutenous wounds. The aim of this study is to evaluate the dose dependent use of ozonated olive oil w...
TL;DR: Ozone dissolution system design is important for meeting transfer efficiency (TE) goals as mentioned in this paper, and large sidestream pump flow and high venturi inlet pressure improves TE but increases operating cost.
Abstract: Ozone dissolution system design is important for meeting transfer efficiency (TE) goals. Large sidestream pump flow (L) and high venturi inlet pressure improves TE but increases operating cost. Ozo...
Abstract: This study presents a framework for simultaneously evaluating ozone dose and empty bed contact time in ozone-biofiltration systems when aiming to optimize or maximize total organic carbon (TOC) rem
TL;DR: In this paper, the impact of gaseous ozone treatments on melon seeds paste (nonedible part) and compared with the effect on pulp (edible part), was evaluated in terms of physicochemical (color, pH, and soluble solids content) and nutritional profiles (total phenolics, total carotenoids, and total antioxidant capacity) of processed material.
Abstract: Melon seeds are an important source of bioactive compounds, which are considered to be health beneficial. Therefore, the objective of this work was to assess the impact of gaseous ozone treatments (30 and 60 min) on melon seeds paste (nonedible part) and compare with the effect on pulp (edible part). Ozone treatments were evaluated in terms of physicochemical (color, pH, and soluble solids content) and nutritional profiles (total phenolics, total carotenoids, and total antioxidant capacity) of processed material. Results indicate that ozone has a different impact on the two fruit matrices, being seeds less affected by this preservation treatment.