scholarly journals Study of briquette properties at their long-time storage

2013 ◽  
Vol 59 (No. 3) ◽  
pp. 101-106 ◽  
Author(s):  
M. Brožek
Keyword(s):  
Storage Time ◽  
Calorific Value ◽  
Life Time ◽  
Gross Calorific Value ◽  
Mechanical Durability ◽  
Long Time ◽  
Plastic Bag ◽  
And Storage ◽  
Storage Place

The paper presents the results of laboratory tests aimed at the study of storage place, storage manner and storage time in relation to mechanical properties of briquettes made from spruce shavings. A BrikStar 50 briquetting press with a pressure chamber 65 mm in diameter of the Briklis firm was used for the briquette production. All briquettes were made at the constant adjustment of all parameters of the briquetting press. The briquette properties were evaluated by determination of their density and rupture force. Moreover, mechanical durability, gross calorific value, total mois­ture and ash content were determined. It follows from the results of tests that at briquette storage in a well closed plastic bag neither place nor storage time influenced significantly their life time. At briquette storage in a net plastic bag various intensive damage to briquettes occurred, mainly depending on their storage place and storage time.  

scholarly journals Influence of Storage on Briquettes Mechanical Properties

2014 ◽  
Vol 45 (3) ◽  
pp. 175-179 ◽  
Author(s):  
M. Brožek
Keyword(s):  
Mechanical Properties ◽  
Present Author ◽  
Storage Time ◽  
Life Time ◽  
Rupture Force ◽  
Test Results ◽  
Plastic Bag ◽  
And Storage ◽  
Storage Place

Abstract The effects of the storage place, placing manner, and storage time on mechanical properties of briquettes made from birch chips were laboratorily tested. A unique methodology developed by the present author enabling a relatively easy assessment of mechanical properties of the briquettes is described. The briquettes properties were evaluated by their density and rupture force determination. From the test results it follows that if the briquettes are stored in a well closed plastic bag, neither the place nor the storage time influence significantly their life time. When stored in a net plastic bag, the briquettes get seriously damaged, namely depending on their storage place and storage time.

scholarly journals Quality evaluation of briquettes made from wood waste

2012 ◽  
Vol 58 (No. 1) ◽  
pp. 30-35 ◽  
Author(s):  
M. Brožek ◽  
A. Nováková ◽  
M. Kolářová
Keyword(s):  
Quality Evaluation ◽  
Evaluation Criteria ◽  
Calorific Value ◽  
Wood Dust ◽  
Gross Calorific Value ◽  
Pine Sawdust ◽  
Fine Grained ◽  
Technology Products ◽  
Mechanical Durability ◽  
Total Moisture Content

At logging and at the subsequent wood and wood semi-products treatment the fine grained loose waste arises, e.g. wood dust, saw dust, shavings, chips, bark etc. One of possibilities of its meaningful utilization is the briquetting technology, products of which are briquettes determined for energetic utilization (combustion). In the paper the experimental results are published. The briquettes quality evaluation was their aim. For the briquetting tests bark (pine), shavings (about 90% spruce + 10% pine), sawdust (spruce), birch chips and poplar chips were used. The basic physical-mechanical properties were the evaluation criteria. Following properties were determined: gross calorific value, total moisture content, density, rupture force, length, diameter, density and mechanical durability.

scholarly journals Aflatoxin species: their health effects and determination methods in different foodstuffs

2012 ◽  
Vol 10 (3) ◽  
pp. 675-685 ◽  
Author(s):  
Sezgin Bakırdere ◽  
Selin Bora ◽  
E. Bakırdere ◽  
Fırat Aydın ◽  
Yasin Arslan ◽  
...  
Keyword(s):  
Health Effects ◽  
Analytical Techniques ◽  
The Other ◽  
Advantages And Disadvantages ◽  
Time Period ◽  
Long Time ◽  
Sensitive Determination ◽  
Determination Methods ◽  
And Storage

AbstractCarcinogenic and mutagenic properties of aflatoxin species are known in literature. Their intake over a long time period might be health-dangerous for human even at trace levels. It is well known that different foodstuffs can be contaminated by aflatoxin species through growing and storage. Due to the serious health effects, sensitive determination of aflatoxin species in any matrices related with the human being is very crucial at trace levels. In literature, there are sensitive techniques to analyze the different samples for the contents of their aflatoxin species. Each technique has some advantages and disadvantages over the other techniques. This review aims to summarize the different health effects of aflatoxin species, development of analytical techniques and applications of developed techniques in a variety of matrices.

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