Experimental Study on the Effective Separation of Chromium-Iron Ions in Multi-Component Solution System by Ihleite Method

2014 ◽  
Vol 887-888 ◽  
pp. 707-710
Author(s):  
Cheng Jun Liu ◽  
Qing Song Zhang ◽  
Pei Yang Shi ◽  
Bo Zhang ◽  
Mao Fa Jiang
Keyword(s):  
Loss Rate ◽  
Acidic Solution ◽  
Raw Material ◽  
Iron Ions ◽  
Solution System ◽  
Close Attention ◽  
Material Resources ◽  
Component Solution ◽  
Combination Technology ◽  
Chromium Salt

As one of the raw material resources in China, chromium salt production has been paid to close attention. Alkali process of chromium salt produces serious environmental pollution, while acid production of chromium salt has separation problems of chromium-iron ions. The separation process of chromium-iron ions in acidic solution by the combination technology of hydrothermal method and ihleite method is studied in this paper. which finds that: with the increase of reaction temperature or with the extension of reaction time, precipitation rate of iron increases, while loss rate of chromium decreases.

PEAS AND PRODUCTS OF ITS PROCESSING OF - NONCONVENTIONAL RAW MATERIAL RESOURCES

2020 ◽  
Author(s):  
D.Y. Bolgova ◽  
◽  
N.A. Tarasenko ◽  
Z.S. Mukhametova ◽  
◽  
...  
Keyword(s):  
Chemical Composition ◽  
Human Health ◽  
Food Production ◽  
Food Industry ◽  
Raw Material ◽  
Plant Proteins ◽  
Material Resources ◽  
The Rich

Nutrition is an important factor that affects human health. The use of plant proteins as various additives in food production has now been actively developed. The rich chemical composition of pea grains determines the possibility of application in the food industry. Peas are characterized by good assimilability and degree of digestion.

Agglomeration Technologies of Processing Powder Wastes

2015 ◽  
Vol 244 ◽  
pp. 121-129
Author(s):  
Marian Peciar ◽  
Roman Fekete ◽  
Peter Peciar
Keyword(s):  
Research Work ◽  
Operating Conditions ◽  
Airborne Particles ◽  
Raw Material ◽  
Production Cycle ◽  
Shear Forces ◽  
Material Resources ◽  
New Type ◽  
Two Phases ◽  
High Technologies

This article deals with the presentation of modern applications for processing powdered, primarily hazardous, waste to an agglomeration form appropriate for subsequent processing by classical methods, for example in the construction, automotive and consumer goods industries. The aim of the research work was to set appropriate operating conditions in order to appreciate currently non-processable wastes resulting from the intensive production of often extremely expensive materials. Technologies which enable returning powder waste back into the primary production cycle were developed and experimentally tested, thus saving raw material resources. When necessary for the fixing of fine airborne particles with a problematic compacting curve (hard to compress, repulsive due to the surface charge) extrusion processes using a patented technology enabling controlled modification of shear forces in the extrusion zone were successfully applied. A new type of axial extruder allows the elimination of the liquid phase and as a result prevents the clogging of the extrusion chamber. In the case of need for granulation of sensitive materials (for example pharmaceuticals not allowing the addition of any kind of agglomerating fluid or reacting strongly in the contact of the two phases), a process of compaction between rolls with different profiled surface was successfully applied. The developed high technologies and the resulting products thus represent a major contribution to environmental protection in the context of not only the work but also the communal environment.

scholarly journals Waste production and waste management in the EU

2021 ◽  
Vol 900 (1) ◽  
pp. 012024
Author(s):  
S Matušková ◽  
M Taušová ◽  
L Domaracká ◽  
P Tauš
Keyword(s):  
Waste Management ◽  
Living Standards ◽  
Raw Material ◽  
Material Resources ◽  
Waste Production ◽  
The World ◽  
Long Time ◽  
The Impact ◽  
Constant Growth ◽  
The Eu

Abstract The constant growth of the population increases the demands on raw material resources, which is reflected in increasing pressure on the environment. The impact of mankind on the environment is nowadays an increasingly acute problem, which is being addressed by the governments of individual countries, not only the EU, through legislative interventions. The most addressed areas are the issue of production and subsequent waste management. Waste production in the world has been growing for a long time, which causes considerable problems for individual countries. Each country is currently looking for the optimal way of waste management to reuse it as secondary raw material. In this paper, we analysed twenty-eight EU countries in terms of production and waste management and found significant differences between countries. We looked for factors that lead to different results between countries in the production and management of waste, based on the population, the size of the country to the indicators of living standards, and legislation applicable to those countries.

scholarly journals Risk assessment of the use of alternative animal and plant raw material resources in aquaculture feeds

2019 ◽  
Vol 12 (2) ◽  
pp. 703-758 ◽  
Author(s):  
Brett D. Glencross ◽  
Johanna Baily ◽  
Marc H.G. Berntssen ◽  
Ronald Hardy ◽  
Simon MacKenzie ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Raw Material ◽  
Material Resources ◽  
Plant Raw Material

scholarly journals Waste Electrical and Electronic Equipment: A Review on the Identification Methods for Polymeric Materials

Recycling ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 32 ◽  
Author(s):  
Grigorescu ◽  
Grigore ◽  
Iancu ◽  
Ghioca ◽  
Ion
Keyword(s):  
Polymeric Materials ◽  
Industrial Applications ◽  
Complete Characterization ◽  
Electronic Equipment ◽  
Raw Material ◽  
Identification Methods ◽  
Material Resources ◽  
Characteristic Values ◽  
Materials Used

Considering that the large quantity of waste electrical and electronic equipment plastics generated annually causes increasing environmental concerns for their recycling and also for preserving of raw material resources, decreasing of energy consumption, or saving the virgin materials used, the present challenge is considered to be the recovery of individual polymers from waste electrical and electronic equipment. This study aims to provide an update of the main identification methods of waste electrical and electronic equipment such as spectroscopic fingerprinting, thermal study, and sample techniques (like identification code and burning test), and the characteristic values in the case of the different analyses of the polymers commonly used in electrical and electronic equipment. Additionally, the quality of the identification is very important, as, depending on this, new materials with suitable properties can be obtained to be used in different industrial applications. The latest research in the field demonstrated that a complete characterization of individual WEEE (Waste Electric and Electronic Equipment) components is important to obtain information on the chemical and physical properties compared to the original polymers and their compounds. The future directions are heading towards reducing the costs by recycling single polymer plastic waste fractions that can replace virgin plastic at a ratio of almost 1:1.

scholarly journals Application of man-induced raw material resources as a way to solve ecological problems

2019 ◽  
Vol 663 ◽  
pp. 012047
Author(s):  
D K-S Bataev ◽  
V Kh KHadisov ◽  
A Z Abukhanov ◽  
M Sh Salamanova
Keyword(s):  
Raw Material ◽  
Material Resources ◽  
Ecological Problems

Improve the utilization of hydrocarbon raw-material resources

1973 ◽  
Vol 9 (3) ◽  
pp. 219-221
Author(s):  
Ya. G. Sorkin ◽  
Yu. I. Bokserman
Keyword(s):  
Raw Material ◽  
Material Resources

COMPARATIVE ANALYSIS OF ALTERNATIVE FUELS FOR VEHICLES

2015 ◽  
Vol 2 (2) ◽  
pp. 373-378 ◽  
Author(s):  
Лемешева ◽  
E. Lemesheva ◽  
Кочегаров ◽  
D. Kochegarov ◽  
Тихомиров ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Vegetable Oils ◽  
Alternative Fuels ◽  
Low Cost ◽  
Raw Material ◽  
Ecological Situation ◽  
Suitable Alternative ◽  
Material Resources ◽  
Motor Fuels ◽  
Harmful Substances

The growing demand for alternative motor fuels is dictated by aggravating energy and environmental problems. In article the analysis about possibility of use of alternative types of fuel for vehicles is carried out. Application of suitable alternative types of fuel will allow to improve in the future an economic and ecological situation in the country. Alternative fuel has to conform to the following requirements: to have necessary raw material resources, low cost, not to worsen operation of the engine, it is as little as possible to throw out harmful substances, whenever possible to be combined with the developed system of supply with fuel, etc. It is shown that natural gas and fuels derived from vegetable oils are most economical to use

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