22 research outputs found
X-ray computerized tomography analysis and density estimation using a sediment core from the Challenger Mound area in the Porcupine Seabight, off Western Ireland
Full text linkStudies on the electrochemical disinfection of water containing Escherichia coli using a Dimensionally Stable Anode
Full text linkThe use of vinasse as an amendment to ex-situ bioremediation of soil and groundwater contaminated with diesel oil
Full text linkInvestigation about the efficiency of the bioaugmentation technique when applied to diesel oil contaminated soils
Full text linkStepwise application of horizontal seismic profiling for tunnel prediction ahead of the face
No full textElectrolytic treatment of wastewater containing n-phenyl-n '-1,3-dimethylbutyl-p-phenylenediamine
No full textThis study investigated the effects of electrolytic treatment using Dimensionally Stable Anode (DSA, 70%TiO2/30%RuO2) type electrodes in simulated wastewater containing aromatic amine n-phenyl-n'-1,3-dimethylbutyl-p-phenylenediamine (Flexzone 7P). A low direct current density of 0.025 A cm(-2) was applied for periods up to 60 minutes and a 52.6% decrease in Flexzone 7P concentration was observed. Ultraviolet-visible spectra, gas chromatography, toxicity and biodegradation tests were carried out with the aim of verifying the toxic by-products that were formed. Ultraviolet-visible spectra of simulated wastewater exhibited changes in the aromatic amine's molecular structure. Additionally, based on the S. cerevisiae toxicity test, it was observed that detoxification of the wastewater occurred after 15 minutes of electrolysis. It was also observed that five minutes of treatment were sufficient to improve the biodegradation rate, determined through the respirometric Bartha method
A numerical assessment of the use of surface nuclear magnetic resonance to monitor internal erosion and piping in earthen embankments
No full textELECTROLYTIC TREATMENT OF WASTEWATER CONTAINING N‐PHENYL‐N′‐1, 3‐DIMETHYLBUTYL‐P‐PHENYLENEDIAMINE
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