scholarly journals A Study on Factors Influencing the Determination of Moisture Content of Fibrous Peat

2011 ◽  
Vol 2 (2) ◽  
pp. 39-47 ◽  
Author(s):  
Pui Tau Shien ◽  
Seneviratne H.N. ◽  
Dygku Salma Awg Ismail
Keyword(s):  
Moisture Content ◽  
Particle Density ◽  
Peat Soil ◽  
Test Procedure ◽  
Field Measurements ◽  
Standard Test ◽  
Moisture Loss ◽  
Fibrous Peat ◽  
Saturated Sample

Fibrous peat is an undrained peat that usually possesses very high moisture content. However, not all experimental procedures are applicable for determination of moisture content of fibrous peat. This research is aimed at examining the determination of insitu moisture content of fibrous peat using field measurements. The peat soil samples were collected at shallow depths from Asajaya at Kota Samarahan and Taman Kopodims at Matang , Kuching Sarawak by using peat auger. The laboratory tests such as determination of moisture content, fiber content, particle density and ash content were conducted on the collected samples in order to establish relationships between the parameters. Undisturbed peat samples from Matang were subjected to falling head permeability test to determine the saturated permeability. The saturated sample were then allowed to drain freely to simulate the moisture loss possible during sampling when samples were brought out of boreholes. The test results showed that moisture content varies according to the drying temperature and position of the soil sample (top, middle and bottom) during sampling. Comparing samples from both locations, peat soil from Kota Samarahan possessed higher moisture content. The saturated permeability of peat sample was in the range of 2.62 – 3.05 cm/s. The free draining trial showed that moisture loss during sampling significantly influence the moisture content measurement. The variation in value of moisture content for fibrous peat may occurs due to several factors such as existing ground water table, sampling method by boring, existing standard test procedure which is not suitable for peat soils requirement and also because of the physical properties which varied according to depth of soil.

scholarly journals Shrinkage Behavior of Peat – Polymer Mixtures

2019 ◽  
Vol 8 (2S2) ◽  
pp. 30-35
Keyword(s):  
Peat Soil ◽  
Linear Shrinkage ◽  
Cylindrical Sample ◽  
Moisture Loss ◽  
Polymer Mixtures ◽  
High Moisture ◽  
Acrylic Copolymer ◽  
Fibrous Peat ◽  
Sample Measurement ◽  
Shrinkage Behavior

Peat soil is a challenging soil with brownish-black in color, consist of high decomposed organic material, high moisture content (>100%), high compressibility (0.9-1.5), low shear strength (5-20 kPa) and high organic matter (>75%). Peat with high moisture experienced it’s highest decreased of moisture when dried. With the larger shrinkage capacity, the fibrous peat are able to reduce the volume up to 50% following air drying. The objective of this study is to identify the shrinkage behavior of original peat and stabilized peat by using Vinyl Acetate – Acrylic Copolymer (VAAC). In this study, a laboratory investigation was conducted by using bar linear shrinkage and cylindrical sample measurement. This polymer can be used to increase the strength of soil and also able to fill the pore medium thus create water proof surface upon drying. Hence the moisture loss can be control and the shrinkage can be reduced. Results show that the value of original peat shrinkage is 26.17% and 28% for bar linear shrinkage method and cylindrical sample measurement method respectively. After added VAAC mixtures, the shrinkage reduce up to 9% and 12% for both method. Hence, this VAAC polymer can be concluded as a good agent to control the shrinkage problems.

scholarly journals Investigation the influence of soil’s moisture regime on their degradation using the remote sensing and ground field verification

2018 ◽  
pp. 26-30 ◽  
Author(s):  
Inna Romanciuc
Keyword(s):  
Moisture Content ◽  
Soil Cover ◽  
Soil Layer ◽  
Field Measurements ◽  
Moisture Regime ◽  
Ground Field ◽  
East Central ◽  
Distance Methods ◽  
Sentinel 2

In the article were used the field and distance methods of determination of moisture content in the upper layer of soil cover. Comparison of field measurements of soil moisture and Sentinel-2 image processing results revealed their correlation. On the basis of the moisture content data in the soil layer and the vegetation state analysis the soil fertility prediction was made. The research were done near Berezan, the Baryshivskyi raion in east-central Kiev Oblast of Ukraine.

Determination of Physicomechanical Properties of Cowpeas to Aid Thresher Design

2007 ◽  
Vol 18-19 ◽  
pp. 159-164 ◽  
Author(s):  
F.A. Maunde ◽  
M.A. Ali ◽  
A. El Okene ◽  
B.B. Riji
Keyword(s):  
Moisture Content ◽  
Coefficient Of Friction ◽  
Particle Density ◽  
Physicomechanical Properties ◽  
Angle Of Repose ◽  
White Variety ◽  
Varietal Differences ◽  
Level Of Confidence ◽  
O 63

Two varieties of cowpea namely indigenous brown (Variety A) and RMP- 12 (Sampea -10) white (Variety B) were collected and their Physicomechanical properties were determined. The results of moisture content, sizes and mass of pods and seeds were { (6.5 % & 6.8%), (5.5 % & 6.0 %)}, { (150 mm & 130 mm), (9 mm & 10 mm)} and {(1.8g & 2.0 g ),( 0.9g & 0.8 g)} respectively. Other results found were particle density, angle of repose, coefficient of friction , hardness and shape/ sphericity of seeds and pods were {(280g & 376 g), (287 g & 275g ) }; {(39o & 36o ), (29.6o & 30 .9o)} {(0.58 & o.63), (0.42 & 0.41)}; {(5N & 5N), (9N & 8.5 N) and {66 % & 69 %) , (79 % & 75 %)} respectively. The F- 0 values obtained for the varietal differences were found less than those in the F- Table at 5% level of confidence, which signified the non existence of significant differences between the varieties. The physicomechanical properties were used for the design of a motorized cowpea thresher.

scholarly journals Comparison of Standard Moisture Loss-on-Drying Methods for the Determination of Moisture Content of Corn Distillers Dried Grains with Solubles

2010 ◽  
Vol 93 (3) ◽  
pp. 825-832 ◽  
Author(s):  
Klein E Ileleji ◽  
Arnoldo A Garcia ◽  
Ambrose R P Kingsly ◽  
Clairmont L Clementson
Keyword(s):  
Moisture Content ◽  
Fuel Ethanol ◽  
Moisture Loss ◽  
Drying Methods ◽  
Moisture Determination ◽  
Drying Method ◽  
Drying Time ◽  
Distillers Dried Grains ◽  
Corn Distillers

Abstract This study quantified the variability among 14 standard moisture loss-on-drying (gravimetric) methods for determination of the moisture content of corn distillers dried grains with solubles (DDGS). The methods were compared with the Karl Fischer (KF) titration method to determine their percent variation from the KF method. Additionally, the thermo-balance method using a halogen moisture analyzer that is routinely used in fuel ethanol plants was included in the methods investigated. Moisture contents by the loss-on-drying methods were significantly different for DDGS samples from three fuel ethanol plants. The percent deviation of the moisture loss-on-drying methods decreased with decrease in drying temperature and, to a lesser extent, drying time. This was attributed to an overestimation of moisture content in DDGS due to the release of volatiles at high temperatures. Our findings indicate that the various methods that have been used for moisture determination by moisture loss-on-drying will not give identical results and therefore, caution should be exercised when selecting a moisture loss-on-drying method for DDGS.

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