Functional-cost analysis of methods of regeneration of used mineral motor oils

2021 ◽  
Vol 4 (2) ◽  
pp. 33-39
Author(s):  
B. O. Korchak ◽  
◽  
O. B. Hrynyshyn ◽  
T. I. Chervinskyy ◽  
S. V. Pysh`yev ◽  
...  
Keyword(s):  
Cost Analysis ◽  
Vacuum Distillation ◽  
Pairwise Comparisons ◽  
Importance Weight ◽  
Physical Chemical ◽  
Physicochemical Methods ◽  
Motor Oils

The main methods of regeneration of used mineral motor oils, in particular physical, chemical, physicochemical methods are considered. The functional-cost analysis of methods of regeneration of the used mineral motor oils by means of branch experts is carried out. Functional-cost analysis is a method of pairwise comparisons and involves the process of ranking the selected characteristics according to the degree of importance (weight). To do this, each characteristic is assigned a certain index. As a result of the functional-cost analysis, the expediency of using technologies of vacuum distillation and hydrocracking of used oils in the processes of regeneration of used oils has been established.

scholarly journals Latest Reports in Managing Acidic Sludge of Used Motor Oil Reprocessing Industries

2020 ◽  
Vol 7 ◽  
pp. 83-92
Author(s):  
Malek Hassanpour
Keyword(s):  
Chemical Structure ◽  
Industrial Applications ◽  
Motor Oil ◽  
Current Review ◽  
Physical Chemical ◽  
Used Motor Oil ◽  
Motor Oils

Used Motor Oils Recycling (UMOR) can be fulfilled in different ways depending on the quality and quantity of the fresh oil and the quality of the collected UMO. The Acidic Sludge (AS) is a byproduct of UMOR with hazardous effects and impacts on the environment. It yields 0.15 of each barrel (220 liters) of UMOR operation. The valid and relevant databases were used to discover the latest reports in managing the AS of UMOR operation. The findings of the current review were oriented towards the physical-chemical backbone of AS and its industrial exploitation. The chemical structure of AS was highlighted by a glance view in the recent reports. To sum up, it was recommended to utilize this valuable byproduct in many industrial applications as an additive.

Composting optimization: Integrating cost analysis with the physical-chemical properties of materials to be composted

2016 ◽  
Vol 137 ◽  
pp. 1086-1099 ◽  
Author(s):  
Primo Proietti ◽  
Roberto Calisti ◽  
Giovanni Gigliotti ◽  
Luigi Nasini ◽  
Luca Regni ◽  
...  
Keyword(s):  
Cost Analysis ◽  
Chemical Properties ◽  
Physical Chemical ◽  
Properties Of Materials

scholarly journals MECHANICAL AND PHYSICOCHEMICAL METHODS OF WASTEWATER TREATMENT IN THE FISH PROCESSING INDUSTRY

2021 ◽  
Vol 11 (1) ◽  
pp. 63-71
Author(s):  
Sergey V. STEPANOV ◽  
Olga S. SOLKINA ◽  
Pavel P. AVDEENKOV ◽  
Andrey V. BELYAKOV ◽  
Aleksandr S. STEPANOV
Keyword(s):  
Wastewater Treatment ◽  
Laboratory Experiment ◽  
Russian Federation ◽  
Fish Processing ◽  
Treatment Technology ◽  
Processing Industry ◽  
Physical Chemical ◽  
Physicochemical Methods ◽  
The Russian Federation ◽  
Pre Treatment

Currently, the Strategy for the development of the fi shery sector of the Russian Federation for the period up to 2030 has been approved. To implement this strategy, the construction of new and reconstruction of existing enterprises is planned. Wastewater from fi sh processing contains a large amount of scales, remnants of entrails (liver, intestines, ovaries), proteins and lipids. Therefore, when developing a treatment technology, it is necessary to pay increased att ention to mechanical and physicochemical pre-treatment of effl uents. This article summarizes the experience of foreign and domestic research on mechanical and physical-chemical wastewater treatment. Also presented are the results of studies on wastewater treatment of two fi sh processing enterprises. The use of Al2(SO4)3 at a dose of 50 mg/l for Al2O3 gave the best results in a laboratory experiment.

Transmission Electron Microscopy of Protein Macromolecules

1971 ◽  
Vol 29 ◽  
pp. 424-425
Author(s):  
Henry S. Slayter
Keyword(s):  
Biological Systems ◽  
Metal Vapor ◽  
Resolving Power ◽  
Electron Microscopic ◽  
Chemical Methods ◽  
Molecular Weights ◽  
The Past ◽  
Physical Chemical ◽  
Transmission Electron

Electron microscopic methods have been applied increasingly during the past fifteen years, to problems in structural molecular biology. Used in conjunction with physical chemical methods and/or Fourier methods of analysis, they constitute powerful tools for determining sizes, shapes and modes of aggregation of biopolymers with molecular weights greater than 50, 000. However, the application of the e.m. to the determination of very fine structure approaching the limit of instrumental resolving power in biological systems has not been productive, due to various difficulties such as the destructive effects of dehydration, damage to the specimen by the electron beam, and lack of adequate and specific contrast. One of the most satisfactory methods for contrasting individual macromolecules involves the deposition of heavy metal vapor upon the specimen. We have investigated this process, and present here what we believe to be the more important considerations for optimizing it. Results of the application of these methods to several biological systems including muscle proteins, fibrinogen, ribosomes and chromatin will be discussed.

Seeking to uncover biology's chemical roots

2019 ◽  
Vol 3 (5) ◽  
pp. 435-443 ◽  
Author(s):  
Addy Pross
Keyword(s):  
Environmental Changes ◽  
Biological Systems ◽  
Significant Development ◽  
The Road ◽  
Physical Chemical ◽  
Systems Chemistry ◽  
Biological World ◽  
Inanimate Matter ◽  
The Origin Of Life ◽  
Opening Up

Despite the considerable advances in molecular biology over the past several decades, the nature of the physical–chemical process by which inanimate matter become transformed into simplest life remains elusive. In this review, we describe recent advances in a relatively new area of chemistry, systems chemistry, which attempts to uncover the physical–chemical principles underlying that remarkable transformation. A significant development has been the discovery that within the space of chemical potentiality there exists a largely unexplored kinetic domain which could be termed dynamic kinetic chemistry. Our analysis suggests that all biological systems and associated sub-systems belong to this distinct domain, thereby facilitating the placement of biological systems within a coherent physical/chemical framework. That discovery offers new insights into the origin of life process, as well as opening the door toward the preparation of active materials able to self-heal, adapt to environmental changes, even communicate, mimicking what transpires routinely in the biological world. The road to simplest proto-life appears to be opening up.

Cost Analysis: A Methodological Statement

1989 ◽  
Vol 7 (1) ◽  
pp. 27-41 ◽  
Author(s):  
Norman Keith Womer
Keyword(s):  
Cost Analysis
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