NANOTECHNOLOGY IN AGRICULTURE

(REVIEW)

 

N.Voropaeva¹, O.Figovsky , D. Beilin²

 

¹All-Russian Rapeseed Research Institute Lipetsk, Russia , ² Polymate Ltd- International Nanonetchology Research Center, Migdal- HaEmek, Israel

 bionanotex_l@mail.ru;   Figovsky@gmail.com

 

ABSTRACT

 

The article is concern with biologically active nanochips for treating seeds of agricultural plants in order to improve seed germination conditions and development of plants and for protecting plants from anticipated and averaged adverse conditions. The biologically active nanochips contain a solid porous carrier, such as mineral, clay, turf, or polymer, the pores of which are intended for accommodating nanoparticles of biologically active substances that penetrate the pores when the substances are applied onto the nanochip surface, e.g., by spraying. Alternatively, the biologically active substances can be retained on the surface of the carrier by adhesion. The composition of the biologically active nanochips is selected with reference to anticipated and averaged adverse conditions. Also proposed is a method for application of the biologically active substances onto the surfaces of the biologically active nanochips. The article offers a brief review of the published works of authors and their employees.

 

LOW-CEMENT CONCRETE WITH ASH-MICROSILICA FILLER

 

L. Dvorkin

 

National University of Water Management and Nature Resources Use, Rivne, Ukraine.

dvorkin.leonid@gmail.com

 

ABSTRACT

 

In present paper the possibility of obtaining ash - microsilica filler (AMSF) and its application as an additive in low-cement concrete is experimentally substantiated. The parameters which characterize the surface energy and pozzolanic activity of AMSF depending on the characteristics of initial materials and their ratios were investigated. Performed X-ray diffraction studies show an accelerating effect of AMSF on the hydration of clinker minerals. The influence of AMSF in the composition with the addition of superplasticizer on water demand and concrete mixes workability was researched. Based on the data obtained with the applying the methodology of mathematical experiments planning, the statistical models of strength of normal hardening concrete and steamed concrete were obtained, depending on the factors which characterize the structure and composition of the concrete with AMSF additive. Analysis of the model allowed determining the area of optimal compositions of low-cement concrete with the AMSF additive. The features of the concrete strength growth, impact of AMSF on frost resistance and deformation properties were studied

 

 

 

 

 

 

 

LITHIUM IN NATURE, APPLICATION, METHODS OF EXTRACTION

(REVIEW)

 

P. Kudryavtsev

 

Holon Institute of Technology, Holon, Israel

pgkudr89@gmail.com

 

ABSTRACT

 

The present review is dedicated to the world's lithium resources, and application areas of lithium and its compounds in everyday life and technology. Lithium is the lightest representative in the group of alkali metals. In its geochemical properties lithium refers to a group of lithophilic elements. Lithium is found in more than 150 minerals, although only 28 lithium minerals per se are known. Many of them are extremely rare. The main lithium minerals are the following: amblygonite, lepidolite, petalite, spodumene, zinnwaldite and Jadar. A review of the world's largest lithium deposits, made the analysis of its global production and reserves. Deposits of lithium are known in Chile, Salar de Uyuni in Bolivia, United States, Argentina, Congo, Lake Chabyer in China, Brazil, Serbia, and Australia. The estimates of reserves were made on the basis of information received from government and industry sources. Separately was presented analysis of the resources and reserves of lithium in the associated petroleum waters of Russia. It also shows that a large source of lithium is the Dead Sea in Israel. Due to the market development of lithium power sources, the most promising lithium resource is secondary resources. The necessity of creation of processes for recycling of spent lithium power sources. In connection with rapid growth in lithium consumption, it is very urgent task of lithium extracting, and receive it in the form of salts, and metal. Have been described, modern sorption methods of lithium extraction from poor on the composition of natural waters and brines with the use of inorganic ion exchangers highly selective to lithium. We present the results of their tests on real natural brines. Particular attention is given to the review of the lithium and its compounds application areas. The most important and rapidly growing area is lithium power sources. Next in importance and volume of consumption lithium is glass and ceramics. Also, large application areas of lithium are lubricants, regeneration of oxygen in the autonomous life support systems, production of polymeric materials and catalysts in chemical technology, metallurgy, pharmaceuticals, medicine. In recent years, a number of promising new application areas of lithium and its compounds: hydrogen energy, electronics and nonlinear optics, nuclear power, and used as rocket fuel. At the end of the article, it provided an overview of prices and demand for lithium and its compounds

NEW COMPOSITE FLOCCULANTS - COAGULANTS

AS AN ALTERNATIVE TO THE KNOWN WATER TREATMENT AGENTS

 

P.G. Kudryavtsev¹, N.P.Kudryavtsev ²

 

¹ Holon Institute of Technology, Holon, Israel, ² Polymate Ltd - Israel Nanotechnology Research Center, Migdal HaEmek , Israel

 

ABSTRACT

 

The present work relates to the technology of inorganic substances and can be used in the preparation of aluminum-silicon and ferrum-silicon flocculants-coagulants and to the methods of treatment of sewage of industrial enterprises and storm water containing oil. In this article the questions of water treatment using modified aluminum-silicon and ferrum-silicon flocculants-coagulants, resulting in new technology. The authors have developed and patented the technology for producing flocculants-coagulants of this type in solid form using methods of matrix isolation of existing active components. Evaluate the effectiveness of the action of ASFC and FSFC on simulated and real industrial wastewater, in comparison with the known analogues.