V diplomski nalogi smo želeli regenerirati odpadni devterirani kloroform, ki je po uporabi za snemanje NMR spektrov, drugače zavržen. Regeneracije smo se lotili s predposkusi z nedevteriranim kloroformom, kateri so nas usmerjali pri čiščenju realnega vzorca. Uporabili smo več metod ločevanja, in sicer: filtracijo, ekstrakcijo, destilacijo in sušenj...
The development of civilization entails a growing demand for consumer goods. A side effect of the production and use of these materials is the production of solid waste and wastewater. Municipal and industrial wastewater usually contain a large amount of various organic compounds and are the main source of pollution of the aquatic environment with ...
Published in Inorganic Materials
Abstract—This paper presents results of a study aimed at developing physicochemical principles of tin diiodide (SnI2) synthesis and ultrapurification by high-temperature fractional distillation. SnI2 samples were synthesized by different processes: in solution, from elemental mixtures at atmospheric pressure, and in a vacuum. Next, the samples were...
This is the first study to carry out a laboratory-scale assay to assess the potentiality of continuous liquid&ndash / liquid extraction with dichloromethane (CLLEDCM) and high-power fractional distillation (HPFD) as a treatment to decontaminate the wastewater generated by the petroleum industry (WW). The analytical parameters of treated wastewater ...
Methanesulfonic acid (MSA) is used to recover silver (Ag) from solar cells by adding an oxidizing agent. It is possible to regenerate by substituting of H+ for Ag+, and thus it can be reused for additional reactions. However, MSA is highly hygroscopic, and as an oxidizing agent can easily decompose in the acidic environment during Ag extraction, le...
Published in Chemical and Petroleum Engineering
Formulas for calculating internal energy saving in a fractionating column without preheating and with heating to boiling point of the initial mixture are given. Formulas are derived for calculating internal energy saving in various schemes of heating of the initial mixture by vapor stream in the rectifying section of the column. The optimum scheme ...
To obtain drop-in fuel properties from 3rd generation biomass, we herein report the catalytic hydrotreatment of microalgae biocrude, produced from hydrothermal liquefaction (HTL) of Spirulina. Our contribution focuses on the effect of temperature, initial H2 pressure, and residence time on the removal of heteroatoms (O and N) in a batch hydrotreati...
Enriched [18O]-water is the target material for [18F]-fluoride production. Due to its high price and scarce availability, an increased interest and necessity has arisen to recycle the used water, in order to use it multiple times as a target material for [18F]-fluoride production. This paper presents an efficient treatment and reprocessing procedur...
Published in Solid Fuel Chemistry
The fractional distillation of crude shale oil was carried out for the removal of low-boiling components, and the yield of this fraction was 28 wt %. The catalytic removal of sulfur-containing compounds on a DN-200 commercial catalyst was performed. The degree of removal of sulfur compounds from crude shale oil was 94%. It was found that the shale ...
Published in Inorganic Materials
We have developed physicochemical principles of the preparation of high-purity arsenic-containing substances from conventional (As2S3, As4S4, and FeAsS sulfide ores) and unconventional raw materials (chemical warfare (lewisite) detoxification products, semiconductor fabrication waste, and nonferrous metals industry waste). We have identified and in...
