bioleaching, molybdenum disulfide, catalyst residue Molybdenum disulfide, MoSz, is used as a catalyst in coal-oil coprocessing. For most processes using molybdenum catalysts to be economical, the molybdenum must be recovered and recycled. Chemical recovery schemes have been devised, but typically recover only a fraction of the molybdenum. There are reports in the literature that bacteria can ox...

Today, the urgent task is synthesis of new nanostructured composite sorbents used for complete utilization various wastes oil and gas refineries, improving technology processes cleaning natural tail exhaust gases from acidic impurities, increasing stability physicochemical properties environmental conditions processing secondary absorbents refineries. Recently, in world industrial enterprises, ...

It is imperative to emphasize the wear-reducing and load-sustaining abilities of lubricating oils, as they are an essential part their operation. In this study, anti-wear extreme pressure (EP) performance Jatropha oil was explored. The investigation executed on a 4-ball tester machine according ASTM-D-4172 D-2783 standards. Nano-sized Molybdenum disulfide graphene were added base oil, whose add...

Limonite, a low-cost iron ore, was investigated as a potential hydrotreatment catalyst for kraft lignin without the use of an external solvent (batch reactor, initial H2 pressure of 100 bar, 4 h). The best results were obtained at 450 °C resulting in 34 wt % of liquefied kraft lignin (lignin oil) on lignin intake. The composition of the lignin oil was determined in detail (elemental composition...

The analysis of the current trend gas processing enterprises related to chemical industries is carried out in this article. impact technical gases emitted by oil and industry on environment population has been studied detail. content hydrogen sulfide (H2S), carbon disulfide (CS2) carbonyl (COS) components analyzed. Studies have order determine amount sulfide, Gazli-TG sample (technical gas) fro...

It is very important to reduce power losses for plain bearings used in industry and especially automobiles. In recent years, inorganic compounds have been added the engine oils friction increase their performance. this study, effects of additive oil obtained by adding 1% weight Molybdenum Disulfide (MoS2) base hydraulic (or lubricating) (Shell Tellus 10) on statically loaded radial journal bear...

the zinc(ii) complex [zn2(dmdtc)2(μ-dmdtc)2] has been synthesized directly from thiram ligand, containing a disulfide bond {dmdtc = n,n-dimethyldithiocarbamate; thiram = n,n-tetramethylthiuram disulfide}, and characterized by elemental analysis and spectroscopic methods. surprisingly thiram, undergoes a reductive disulfide bond scission upon reaction with zn2+ in methanolic media to give the [z...

pegylation is a well-established technique utilized to overcome the problems related to the therapeutic applications of peptides and proteins. reasons for the pegylation of these biological macromolecules include reducing immunogenicity, proteolytic degradation and rapid clearance from blood circulation. octreotide is an octapeptide analogue of naturally-occurred somatostatin. this peptide has ...

Background: Some resources have suggested that genetically inactivated pertussis toxoid (PTs) bear a more protective effect than chemically inactivated products. This study aimed to produce new version of PT, by cloning an inactive pertussis toxin S1 subunit (PTS1) in a fusion form with N-terminal half of the listeriolysin O (LLO) pore-forming toxin. Methods: Deposited pdb structure file of the...

in this research, a single-stage low-temperature hydrothermal synthesis route was successfully developed for preparation of iron disulfide. the prepared powder was characterized by x-ray diffraction (xrd) and scanning electron microscopy (sem). these analyses showed that nanoparticles were well crystallized, pyrite was the main product and the shape of crystals was nanorod. also, the influences...