Zobrazeno 1 - 10
of 12
pro vyhledávání: '"V. P. Strigutskii"'
Autor:
S. B. Selyanina, A. R. Tsyganov, M. V. Trufanova, S. G. Prokhorov, A. E. Tomson, T. V. Sokolova, V. S. Pekhtereva, V. P. Strigutskii, I. I. Lishtvan
Publikováno v:
Solid Fuel Chemistry. 51:296-300
It was established that an increase in the bituminosity of peat with the degree of decomposition can be explained by an exchange interaction between the π electrons of the molecular polyconjugation systems of humic acids and the quasi-polyconjugatio
Publikováno v:
Solid Fuel Chemistry. 51:326-335
The role of natural factors in the formation of organic sapropel of different genesis was evaluated. The dynamics of trophic conditions and the composition of ancient biocenoses in the Sudobl Lake with outlet in the Minsk region were studied. It was
Autor:
S. V. Parmon, I. I. Lishtvan, Yu. G. Yanuta, A. M. Abramets, N. S. Pershai, V. P. Strigutskii
Publikováno v:
Solid Fuel Chemistry. 51:308-314
The sorption properties of materials formed after the extraction of humic substances (HSs) from caustobioliths, that is, the dehuminated caustobiolith (DC) residues insoluble in acids and alkalis, as promising secondary humic raw materials for the pr
Autor:
A. M. Abramets, Yu. G. Yanuta, V. N. Aleinikova, I. I. Lishtvan, V. P. Strigutskii, A. S. Pershai
Publikováno v:
Solid Fuel Chemistry. 51:301-307
The mechanism of the interaction of the humic substances (HSs) of peat and brown coal with the ions of constant (Zn and Pb) and variable valence (Cu, Cr, Co, and Ni) metals in acidic solutions (pH 2) was studied. It was established that the constant
Publikováno v:
Solid Fuel Chemistry. 47:147-152
The demineralization processes of humic substances of different genesis were studied. It was found that the ash components of humic substances from brown coals and peat have different nature, and their demineralization with the use of traditional met
Publikováno v:
Solid Fuel Chemistry. 47:153-164
The fractional group composition of humic substances and the chemical structure of humic acids isolated from peats of different genesis from different depths of occurrence in peat deposits with the use of two extractants (0.1 N NaOH and 0.1 M Na4P2O7
Autor:
I. I. Lishtvan, V. P. Strigutskii, Yu. G. Yanuta, N. S. Glukhova, V. N. Aleinikova, A. M. Abramets, Yu. Yu. Navosha
Publikováno v:
Solid Fuel Chemistry. 46:153-158
As found with the use of EPR and IR spectroscopy, the formation of aromatic polyconjugation systems by the destruction of aliphatic molecular fragments is the main transformation mechanism of the molecular structure of the humic acids (HAs) of causto
Autor:
V. P. Strigutskii, V. S. Pekhtereva, I. I. Lishtvan, A. E. Tomson, T. V. Sokolova, S. V. Parmon
Publikováno v:
Solid Fuel Chemistry. 45:143-148
The treatment of peat with the solutions of phosphoric, citric, and oxalic acids in concentrations of 10−4 and 10−2 mol/l at solid phase to liquid ratios of 1: 2.5 and 1: 5 increased the absorption of ammonia by 6.4–39.7%. The absorption of amm
Publikováno v:
Colloid Journal. 71:219-222
It is experimentally proven that copper superequivalent sorption by humic compounds is accompanied by macrocoordination, that is, the binding of copper ions by humic compounds without participation of functional groups. Moreover, the content of macro
Publikováno v:
Colloid Journal. 67
Mechanisms are proposed for the formation of metal-humic acid complexes in solutions with a high content of heavy metal salts. Specific features of complex formation are considered with the reference to copper and lead.