scholarly journals Effect of Operating Parameters on the Physical Properties of Activated Carbon Manufactured with Bead-Type Polymer Resin

2013 ◽  
Vol 19 (3) ◽  
pp. 279-286 ◽  
Author(s):  
Gangchoon Lee ◽  
Taekyung Yoon ◽  
Zangho Shon
Keyword(s):  
Activated Carbon ◽  
Physical Properties ◽  
Operating Parameters ◽  
Polymer Resin ◽  
Bead Type

V&M T23

Alloy Digest ◽  
2001 ◽  
Vol 50 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Power Plant ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Operating Parameters ◽  
Power Plant Boiler ◽  
Plant Boiler

Abstract Vallourec and Mannesmann (V and M) Tubes T23 is a power plant boiler tubing alloy developed to resist increasing operating parameters of pressure and temperature. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on forming, heat treating, and joining. Filing Code: SA-507. Producer or source: Vallourec & Mannesmann.

scholarly journals An evaluation of the suitability of fluorescent fabrics and retroreflective materials for road traffic warning clothing in compliance with international standards

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Soonja Park
Keyword(s):  
Physical Properties ◽  
Road Traffic ◽  
Incidence Angle ◽  
International Standards ◽  
Surface Finishing ◽  
Observation Angle ◽  
Moisture Regain ◽  
Conductive Fabric ◽  
Bead Type ◽  
Public Road

AbstractThe purpose of this study is to compare and analyze physical properties of different fluorescent fabrics and retroreflective materials to determine their compliance to international standard for high-visibility warning clothing. Four fluorescent fabrics were selected for the study: a PET 71%/Cotton 23%/PU 6% fabric used in public road cleaner uniforms in Korea (S1), an ISO-compliant Japan-made PET 65%/Cotton 35% + conductive fabric (S2), and a randomly selected Korean-made PET 100% fabric for adults (S3) and children (S4). Selected samples were evaluated on their seven criteria in ISO 20471. Subsequently, luminance and retroreflective properties of four retroreflective materials were compared: a 3M (USA) plain sample (R1), a rectangular-patterned sample made by ‘R’ company (Korea) (R2), a plain sample also by ‘R’ (R3), and a random plain sample from a marketplace in Korea (R4). As a result, S1 was the most similar to ISO-compliant S2 and moisture regain could be improved by adjusting the cotton ratio or surface finishing. However, S3 and S4 seemed less suitable. Second, two bead type (R1, R4) and two prism type (R2, R3) retroreflective materials showed luminance in the order of R4 > R2 ≥ R1 > R3. General retroreflective properties and post-5-condition retroreflective properties of all four samples were ISO-compliant, and the retroreflective property at observation angle of 12′ and incidence angle of 5° of R2, R3, and R4 against R1 ranged between 81.4% and 158.4%. Despite the variance, all four samples were ISO-compliant and suggest that R2, R3, and R4 are possible materials for export.

Relation between operating parameters and desalination performance of capacitive deionization with activated carbon electrodes

2015 ◽  
Vol 1 (4) ◽  
pp. 516-522 ◽  
Author(s):  
Danyang Liu ◽  
Kuan Huang ◽  
Leijie Xie ◽  
Hao L. Tang
Keyword(s):  
Activated Carbon ◽  
Statistical Modeling ◽  
Carbon Electrodes ◽  
Operating Parameters ◽  
Capacitive Deionization ◽  
Modeling Approach

This work presents a novel attempt at using a statistical modeling approach to predict the desalination performance of CDI.

scholarly journals Pyrolysis of Microalgae Chlorella sp. using Activated Carbon as Catalyst for Biofuel Production

2021 ◽  
Vol 16 (1) ◽  
pp. 205-213
Author(s):  
Viqhi Aswie ◽  
Lailatul Qadariyah ◽  
Mahfud Mahfud
Keyword(s):  
Activated Carbon ◽  
Physical Properties ◽  
Reaction Temperature ◽  
Bubble Column ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Carbon Catalyst ◽  
Chlorella Sp ◽  
Conventional Pyrolysis ◽  
Fraction Yield

Microalgae, as a potential raw material for biofuel, has several advantages compared to other biomass. One effective way to convert microalgae into biofuel is by thermal cracking or pyrolysis, and using a catalyst or not. So far, studies on the use of microalgae, that are converted into biofuels, is still use highly concentrated catalysts in packed bed reactors, which is not economical. Therefore, the aim of this study is to convert Chlorella sp. into biofuels with conventional pyrolysis without and using an activated carbon catalyst using packed bed reactor with bubble column. The reaction temperature is 400–600 °C, pyrolysis time is 1–4 hours, and the active carbon catalyst concentration is 0–2%. The 200 grams of Chlorella sp. and the catalyst was mixed in a fixed bed reactor under vacuum (−3 mm H20) condition. Next, we set the reaction temperature. When the temperature was reached, the pyrolysis was begun. After certain time was reached, the pyrolysis produced a liquid oil product. Oil products are measured for density and viscosity. The results showed that the conventional pyrolysis succeeded in converting microalgae Chlorella sp. into liquid biofuels. The highest yield of total liquid oil is obtained 50.2 % (heavy fraction yield, 43.75% and light fraction yield, 6.44%) at the highest conditions which was obtained with 1% activated carbon at a temperature and pyrolysis time of 3 hours. Physical properties of liquid biofuel are density of 0.88 kg/m3 and viscosity of 5.79 cSt. This physical properties are within the range of the national biodiesel standard SNI 7182-2012. The packed bed reactor completed with bubble column is the best choice for converting biofuel from microalgae, because it gives different fractions, so that it is easier to process further to the commercial biofuel stage. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 

Combinative dyebath treatment with activated carbon and UV/H2O2: a case study on Everzol Black-GSP®

2002 ◽  
Vol 46 (4-5) ◽  
pp. 51-58 ◽  
Author(s):  
N.H. Ince ◽  
D.A. Hasan ◽  
B. Üstün ◽  
G. Tezcanli
Keyword(s):  
Hydrogen Peroxide ◽  
Activated Carbon ◽  
Carbon Mineralization ◽  
Oxidative Degradation ◽  
Advanced Oxidation ◽  
Color Removal ◽  
Operating Parameters ◽  
Cost Reductions ◽  
H2o2 System

Treatability of textile dyebath effluents by two simultaneously operated processes comprising adsorption and advanced oxidation was investigated using a reactive dyestuff, Everzol Black-GSP® (EBG). The method was comprised of contacting aqueous solutions of the dye with hydrogen peroxide and granules of activated carbon (GAC) during irradiation of the reactor with ultraviolet light (UV). Control experiments were run separately with each individual process (advanced oxidation with UV/H2O2 and adsorption on GAC) to select the operating parameters on the basis of maximum color removal. The effectiveness of the combined scheme was tested by monitoring the rate of decolorization and the degree of carbon mineralization in effluent samples. It was found that in a combined medium of advanced oxidation and adsorption, color was principally removed by oxidative degradation, while adsorption contributed to the longer process of dye mineralization. Economic evaluation of the system based on total color removal and 50% mineralization showed that in the case of Everzol Black-GSP®, which adsorbs relatively poorly on GAC, the proposed combination provides 25% and 35% reduction in hydrogen peroxide and energy consumption relative to the UV/H2O2 system. Higher cost reductions are expected in cases with well adsorbing dyes and/or with less costly adsorbents.

scholarly journals Justification of the active method of protecting the insulation of submersible electric motors

2019 ◽  
Vol 124 ◽  
pp. 02003
Author(s):  
V. A. Trushkin ◽  
O. N. Churlyaeva ◽  
R. V. Kozichev
Keyword(s):  
Physical Properties ◽  
Electrical Breakdown ◽  
Electrical Equipment ◽  
Working Environment ◽  
Operating Parameters ◽  
Insulation Resistance ◽  
Electric Motors ◽  
Electrically Conductive ◽  
Active Method ◽  
Conductive Properties

The article provides an analysis of the properties of the working environment of submersible electrical equipment. The influence of the operating parameters of electrical equipment on the physical properties of the fluid (its electrically conductive properties) is considered. Mathematical confirmation of the implementation of electroosmosis in the capillaries of the insulation of submersible electric motors is given. The rationale for the active method of protecting submersible electrical equipment from reducing insulation resistance and preventing electrical breakdown is given.

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