Physical and Chemical Testing of Polymers

2003 ◽  
pp. 113-132
Keyword(s):  
Physical And Chemical ◽  
Chemical Testing

Physical And Chemical Testing Of Compounded PVC

2011 ◽  
Vol 1 (5) ◽  
pp. 95-96
Author(s):  
Sapna Dabade ◽  
◽  
Dr. Dheeraj Mandloi ◽  
Deepak Khare
Keyword(s):  
Physical And Chemical ◽  
Chemical Testing

Evaluation of the Potential of Waste from Pulp Production (Grits) in its Use in Mortar: Physical and Chemical Characterization

2015 ◽  
Vol 820 ◽  
pp. 583-587
Author(s):  
Leonardo Carvalho Mesquita ◽  
Rita de Cássia S. Sant’ana Alvarenga ◽  
Carol Ferreira Rezende Santos ◽  
Adonys Natan Oliveira Alvares ◽  
Ana Augusta Passos Rezende ◽  
...  
Keyword(s):  
Paper Industry ◽  
Chemical Characterization ◽  
Pulp And Paper Industry ◽  
Kraft Process ◽  
Physical And Chemical Characterization ◽  
Absorption Determination ◽  
Potential Alternative ◽  
Physical And Chemical ◽  
Chemical Testing

The grits is an inorganic solid residue generated during the Kraft process by the pulp and paper industry, which presents in its composition the main ingredients of Portland cement. According to some authors, the grits can be classified as a non inert, non hazardous, granular solid industrial waste. With this in mind, a study was proposed with the objective of evaluating, initially, the applicability of grits in mortar, by means of physical and chemical testing. The physical evaluations were realized through the following tests: determination of bulk gravity saturated - surface - dry (SSD) and water absorption; determination of the pulverulent material content; and the determination of particle size distribution. To chemically test the grits, a reading of the metal concentrations present in the grits was realized as well as an analysis of the leaching and solubilization extracts. It was concluded that the addition of grits to mortar is a potential alternative.

scholarly journals ASSESSMENT OF PHYSICAL AND CHEMICAL QUALITY OF DRINKING WATER IN ELOBEID CITY, NORTH KORDOFAN STATE, SUDAN

2020 ◽  
pp. 293-296
Author(s):  
Halima Brima Gama Tigaidi ◽  
Dr. Mohammed Ismail Humaida ◽  
Dr.Kubra Ali Ebrahim Hammad
Keyword(s):  
Drinking Water ◽  
Residual Chlorine ◽  
Standard Procedures ◽  
Random Samples ◽  
Two Samples ◽  
Physical And Chemical Quality ◽  
Physical And Chemical ◽  
The City ◽  
Chemical Testing

This study was conducted in El-Obied City, North Kordofan State.The study comprised of 54 samples of water selected from houses, animal carts (karo), tankers, gerbas and main source of water bara basin and El-khazan (surface water )in El-Obied. The sample was divided over these sources following a process of stratified sampling combined with simple random samples with probability proportional to size of sample over the selected blocks where selection was at random in each stage. Physical and chemical testing of water was done using standard procedures. Two Samples of water were collected from the main sources of water in the City for physical and chemical analysis and 52 samples collected from blocks. The data were analyzed by computer. This study showed that 50% of the samples were without residual chlorine, and only 1.8% of samples were soft water. The study showed that 3.7% of samples had pH above WHO and SSMO Standard and also showed 18.5% of samples had turbidity above 5 NTU. KEY WORDS: Assessment, physical, chemical, drinking water, El-Obied

scholarly journals PENGARUH JENIS DAN JUMLAH ADSORBEN SERTA LAMA PERENDAMAN TERHADAP CUKA KAYU UNTUK PENGAWET MAKANAN (The Effect of Type And Amount of Adsorbent and Soaking Time to The Characteristics of Wood Vinegar for Food Preservatives)

2016 ◽  
Vol 8 (1) ◽  
pp. 17
Author(s):  
Rizka Karima ◽  
Fatmi Edwar
Keyword(s):  
Treated Wood ◽  
Total Sample ◽  
Food Preservatives ◽  
Soaking Time ◽  
Wood Vinegar ◽  
Chemical Content ◽  
Standard Quality ◽  
Physical And Chemical ◽  
Chemical Testing

Wood vinegar contains antibacterial compounds and antioxidants which is important as preservative in the food industry. This research aims to identify the characteristics of wood vinegar after deodorized, because the smell of wood vinegar spoils the odour of foods preserved with wood vinegar. The deodorizing used three types of adsorbent such as bentonite, active sand and zeolite. It was performed with three variations of weight: 10, 25, and 50 grams, and three variations of the soaking time: 2, 4, and 6 hours. The deodorised wood vinegar was organoleptically tested by 20 panelists to smell the deodorised wood vinegar. The five smallest samples were tested from the total 27 samples. However, the fifth and sixth were the same so the total sample tested was six samples. The physical and chemical testing results stated that the treated wood vinegar odor reduction has changed the chemical content, decreased the levels of total acids about 69,35 %, and decreased the phenol content about 51,51 %. It resulted in the obtained values did not meet the standard quality of wood vinegar. From the results of GC-MS spectra, there are entrained Silica that dissolved in the wood vinegar after deodorizing. In conclusion, the adsorbent able to eliminate the odor but degrade the quality of wood vinegar.Keywords: food preservative, wood vinegar, adsorbent

scholarly journals Study on hydrogen permeation method of zirconium alloy tube

2020 ◽  
Vol 4 (1) ◽  
pp. 9-11
Author(s):  
Du Hao ◽  
Keyword(s):  
Zirconium Alloy ◽  
Hydrogen Permeation ◽  
Orientation Factor ◽  
Factors Affecting ◽  
Alloy Tube ◽  
Determination Process ◽  
Factor Measurement ◽  
Testing Center ◽  
Physical And Chemical ◽  
Chemical Testing

Physical and Chemical Testing Center of North Nuclear Fuel Components Co., Ltd., Baotou, Inner Mongolia, 014035, China The determination process of hydride orientation factor of zirconium alloy mainly includes hydrogen permeation process and hydride display process. The key of hydride orientation factor measurement lies in controllable and effective hydrogen permeation and true and clear display of hydride. When a metallographic picture with appropriate number of hydride and clear display is obtained, the hydride orientation factor of sample can be accurately and quickly measured. By analyzing and testing the possible factors affecting the hydrogen permeation effect of zirconium alloy tube, the corrosion parameters such as temperature, pressure, type, concentration and holding time of corrosion solution were determined.

Failure Analysis of the Branch Connection Leakage on Primary Pipeline of the Primary Heat Transport System and the Maintenance Strategy Investigation for the Similar Connections

2013 ◽  
Author(s):  
Liang Zhao ◽  
Ting Zhao ◽  
Fengmin Chu ◽  
Jianqun Hu ◽  
Xin Wang
Keyword(s):  
Heat Transport ◽  
Transport System ◽  
Maintenance Strategy ◽  
Dissimilar Weld ◽  
Dissimilar Metal ◽  
Physical And Chemical ◽  
Chemical Testing ◽  
Preventive Repair ◽  
Metal Weld ◽  
Leakage Location

An primary pipeline branch connection of the primary heat transport system leaked in Dec, 2007. Physical and chemical testing are conducted on the leakage location of the branch connection. The primary failure cause was concluded that transgranular stress corrosion cracking (SCC) on stainless steel side of the branch connection dissimilar metal weld lead to the leakage. There are total 8 similar pipelines in each unit of Qinshan III. The preventive repair strategies for this kind of pipelines are investigated. The similar defects could be detected with ultrasonic testing in the planned shutdown outage. The corresponding precaution condition establishing methods for the similar branch connections with 3 typical positions are investigated and defined. A maintenance strategy to repair the dissimilar weld on the branch connection was developed.

scholarly journals MACRONUTRIENTS WATERS OF IRRIGATION ON A PROPERTY OF ORGANIC PRODUCTION IN PARANAGUÁ - PR

2014 ◽  
Vol 12 (24) ◽  
pp. 85-91
Author(s):  
Camila Salles dos REIS ◽  
Luiz Ermindo CAVALLET ◽  
José Roberto Caetano da ROCHA
Keyword(s):  
Chemical Element ◽  
Organic Production ◽  
Sampling Point ◽  
High Concentration ◽  
Molybdenum Blue ◽  
Phosphate Ion ◽  
Phosphate Ions ◽  
Physical And Chemical ◽  
Chemical Testing ◽  
High Phosphate

In this work the results of spectrophotometric assays performed on samples taken from the waters of ownership of organic products, located in the municipality of Paranaguá, as well as other physical and chemical testing of these samples are presented. They were conducted to evaluate the tissue property. The spectrophotometric assays were performed to quantify the chemical element phosphorus by the molybdenum blue method and nitrogen chemical element methods by Griess and Indophenol. These chemicals have low natural availability and macronutrients are important for the growth of plants. With the results it was found that the concentrations of the element nitrogen are below the limits specified by Resolution 357/2005 of CONAMA. Have phosphate ions showed higher concentrations in the water samples were taken from two specific points of organic property. In the samples from the first sampling point was observed that the levels of phosphate present were higher than the results obtained from samples taken from the second point, indicating that high phosphate concentration is likely due to high levels of soil phosphates and not an anthropic deposit held by the farmer. Thus it is concluded that the high concentration of phosphate ion is natural.

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