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The treatment of an industrial effluent containing aniline and benzothiazole from the manufacture of accelerants for vulcanization was performed in a TiO 2 -supported commercial photoreactor. The degradation of both contaminants was monitored by GC-MS analysis. The proposed experiments were able to properly identify the phenomenon of adsorption, as well as to improve the performance of the commercial photoreactor by adding small amounts of TiO 2 in suspension. The removal performance, durability of the photocatalytic material, and energy costs were analysed.

The results showed that the use of suspensions intensifies the degradation obtaining an improvement of These reactions were carried out in two reaction modes: without UV radiation and under UV radiation.


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The reactions of [ All reactions were carried out at ambient temperature, at pH 3. In this mode of PMG oxidation, the splitting of C-P was observed in the ratios dependent on the applied pH of the reaction mixture.


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  8. Irradiation time was up to min. Abstract Extremely high volumes of salty wastewater are produced by textile manufacturers daily.

    Wastewater Treatment: Advanced Processes and Technologies

    Therefore, brine recycling from the wastewater should be regarded as a crucial issue within the textile industry. Ozonation was used in this two-part study as a purification method for industrial textile [ Extremely high volumes of salty wastewater are produced by textile manufacturers daily. Ozonation was used in this two-part study as a purification method for industrial textile wastewater polluted by low-molecular-weight salts LMWS.

    Part 1 revealed the accumulation of ozonation by-products in a multi-recycling system. The objective of Part 2 was the scaling-up of the process and the investigation of the occurrence of by-products. It was found that ozonation works well in an alkaline reaction medium, which was characteristic of the wastewater from a dye house; an almost complete color removal was achieved within 30 min of treatment. The brine that was produced from the wastewater treated by ozonation in a 20 L bubble column reactor was recycled successfully.

    Dyeing of cotton with five types of reactive dyes in various shades resulted in very good values of DE CMC , which is the normative color matching parameter, and were between 0.

    The color fastness obtained for upcycled fabrics were satisfactory, and not worse than standard values. Although accumulation of the side products was detected in Part 1, the fabric discharges produced in the scaled-up process were free from carcinogenic amines and heavy metals.


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    8. The study indicated that ozonation can be applied in the industry as a method for textile wastewater recycling. Abstract Trimethoprim is one of the representative drugs within the pharmaceutical and personal care products PPCPs group. The photo-Fenton oxidation technology was used to degrade trimethoprim in wastewater and the extent of degradation was analyzed by using high-performance liquid chromatography, then experimentally obtained the [ Trimethoprim is one of the representative drugs within the pharmaceutical and personal care products PPCPs group.

      The photo-Fenton oxidation technology was used to degrade trimethoprim in wastewater and the extent of degradation was analyzed by using high-performance liquid chromatography, then experimentally obtained the optimal conditions. Analysis of the experimental data showed that, under the single-factor experimental conditions, the optimal conditions for degradation were a pH of 4, an H 2 O 2 concentration of 3. Under these conditions, it can be obtained a degradation rate of There were similar results for three sets of parallel experiments, indicating that these simulation conditions were feasible.

      Abstract One of the major environmental concerns associated with waste disposal is the large amount of generated landfill leachates LL , which are considered a type of wastewater with a complex composition. There is an urgent need to find an effective LL treatment method. One of the major environmental concerns associated with waste disposal is the large amount of generated landfill leachates LL , which are considered a type of wastewater with a complex composition.

      Pretreatment efficiency was coagulation at pH 6. Coagulation at pH 6. A statistical analysis confirmed the obtained results. The proposed method can be successfully applied for LL treatment. From the left: 1 raw leachates; 2 acidified to pH 3. Open Access Feature Paper Article.

      1. Introduction

      Abstract Water scarcity is one of the main problems of this century. Water reclamation appears as an alternative due to the reuse of treated wastewater. Therefore, effluents treatment technologies activated sludge, rotary biological discs, percolating beds must be improved since they are not able [ Water scarcity is one of the main problems of this century.

      Therefore, effluents treatment technologies activated sludge, rotary biological discs, percolating beds must be improved since they are not able to remove emerging contaminants such as enteric pathogens bacteria and virus. These pollutants are difficult to remove from the wastewater and lead to adverse consequences to human health. Advanced oxidation processes, such as single and catalytic ozonation, appear as suitable complements to conventional processes.

      Catalytic ozonation was carried out using a low-cost material, a volcanic rock.

      Single and catalytic ozonation were capable of promoting total Escherichia coli removal from municipal wastewater after 90 min of contact. The presence of volcanic rock increases disinfection efficiency since E. The identified viruses Norovirus genotype I and II and JC virus were completely removed using catalytic ozonation, whereas single ozonation was not able to eliminate JC virus even after min of treatment. The higher performance of the catalytic process can be explained by the formation of hydroxyl radicals, proving that disinfection occurs in the liquid bulk and not due to adsorption at the volcanic rock.

      Abstract The efficiency of ozone for the treatment of organics contaminated wastewater is limited by its slow dissolution rate and rapid decomposition in the aqueous phase. Micro-nano-bubbles MNBs are a novel method to prolong the reactivity of the ozone in the aqueous phase, thereby [ The efficiency of ozone for the treatment of organics contaminated wastewater is limited by its slow dissolution rate and rapid decomposition in the aqueous phase. Micro-nano-bubbles MNBs are a novel method to prolong the reactivity of the ozone in the aqueous phase, thereby accelerating the treatment of the contaminant.

      In the same section

      In this study, the effects of pH and salinity on the treatment efficiency of ozone MNBs were examined. The highest efficiency was observed in weak acidic conditions and an increase in salinity enhanced the treatment efficiency significantly. Furthermore, the treatment of highly saline industrial wastewater as well as multi-contaminant groundwater containing persistent organics were also investigated. Treatment using ozone MNBs had a considerable effect on wastewaters that are otherwise difficult to treat using other methods; hence, it is a promising technology for wastewater treatment.

      Wastewater Treatment: Advanced Processes and Technologies By D. G. Rao – Dattani Book Agency

      Hernandez-Ramirez , Jorge A. Cano-Aznar and E. Abstract The present work aims to elucidate the possibility of injecting ozone into surface waters combined with urban wastewaters in order to improve the water quality of the High Atoyac Sub-basin HAS in Central Mexico.

      For this purpose, twenty physicochemical parameters, eight heavy metals, [ The present work aims to elucidate the possibility of injecting ozone into surface waters combined with urban wastewaters in order to improve the water quality of the High Atoyac Sub-basin HAS in Central Mexico. For this purpose, twenty physicochemical parameters, eight heavy metals, seven organic compounds, and one biological indicator were assessed in water from different sites of the studied area the Alseseca River, the Atoyac River and the Valsequillo Reservoir.

      Results demonstrated that O 3 injection led to the decrease of the aromatic fraction of organic molecules since the Spectral Absorption Coefficient at nanometers SAC reduction was found to be Among all the phthalates studied in the present work, Di 2-ethylhexyl phthalate DEHP exhibited the highest concentration 5. Treatment with O 3 was not effective in eliminating fecal coliforms FC in waters that host high organic matter OM loads as opposed to waters with low OM.

      After the injection of 4. The dotted lines represent the required time to obtain kinetics. Review Jump to: Research. Open Access Review. Naylor, S. Pinchon, C. Teil, D. Navaratna, and H. Routledge eBooks are available through VitalSource. Most VitalSource eBooks are available in a reflowable EPUB format which allows you to resize text to suit you and enables other accessibility features. Where the content of the eBook requires a specific layout, or contains maths or other special characters, the eBook will be available in PDF PBK format, which cannot be reflowed.