Relevant bibliographies by topics / Potassium ethylxanthate – Absorption and adsorption

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Academic literature on the topic 'Potassium ethylxanthate – Absorption and adsorption'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Potassium ethylxanthate – Absorption and adsorption"

1

Chen, Hai Feng, Pei Song Tang, Min Hong Xu, and Feng Cao. "Isotherms for Aqueous Potassium Adsorption and Characterization of Natural Pyrophyllite." Materials Science Forum 694 (July 2011): 682–85. http://dx.doi.org/10.4028/www.scientific.net/msf.694.682.

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The present investigatory founded an effectiveness of inexpensive and eco-friendly alumina silicate clay minerals, sericitic pyrophyllite (SP), as an adsorbent for the possible application in the absorption of K+. The crystal structure of pyrophyllite, size and morphology were characterized by XRD and SEM. In addition to pyrophyllite, quartz and were also contained in the minerals. The area of lamellar SP was about dozens um2. The results showed that potassium was absorbed on the SP under different pH and concentrations, and the best condition was pH=6, the time of equilibrium absorption = 30
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2

Matsukawa, Yuji, and Kazuo Umemura. "Detection of Redox Properties of (6,5)-Enriched Single-Walled Carbon Nanotubes Using Potassium Permanganate (KMnO4)." C — Journal of Carbon Research 6, no. 2 (2020): 30. http://dx.doi.org/10.3390/c6020030.

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It has been reported that even if single-walled carbon nanotubes (SWNTs) are coated with the same polymer, the redox characteristics change of each chirality may differ. Particularly, the addition of hydrogen peroxide (H2O2) minimally affects the near-infrared (NIR) absorption spectra of the dsDNA-(6,5)-enriched SWNT complex (DNA-SWNT complex). Detecting the redox properties of (6,5) chirality using NIR absorption spectra has been one of the issues to be solved. We hypothesized that an oxidizing agent with high oxidizing power is required to detect the absorption spectra of (6,5) chirality. In
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3

Wang, Song Mei, Lu Kuan Liu, and Wan Zhen Xu. "Study on the Adsorption Behavior of Chrome and Manganese on Potassium Tetratitanate Whisker." Advanced Materials Research 534 (June 2012): 126–30. http://dx.doi.org/10.4028/www.scientific.net/amr.534.126.

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A new method for the separation and preconcentration of Chrome and Manganese using potassium titrationate whisker was developed prior to the determination by FAAS. The influences of analytical parameters including amount of sorbent, the adsorption capacity, the coexistence ion influence and the adsorption behavior were also studied by the flame atomic absorption spectrometry, the effects of concomitant ions were also examined. The detection limits (3s) were 15ng•mL-1 and 44 ng•mL-1. The method was applied to the determination of analytes in real samples, such as tea and environmental samples,
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4

Pita Rengga, Wara Dyah, Maharani Rani, and Ashar Shidqi. "Application Of Activated Candlenut Shell Using Potassium Hydroxide For Iron Reduction (Fe TO FeSO4)." Journal of Chemical Process Engineering 4, no. 2 (2019): 63–67. http://dx.doi.org/10.33536/jcpe.v4i2.437.

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This study aims to prepare carbon from candlenut shell by carbonation and activation of 1M KOH which is used to adsorb Fe 2+ in solution. The activation process produces changes in structure and functional groups on activated carbon. This study studied the effect of carbonation temperatures of 800 o C with the concentration of activator is KOH 1M with 24 hours activation time. The initial concentration of the solution affects the adsorption capacity of activated carbon, the greater the initial concentration of the solution which is at 5 mg/L, the greater the adsorption capacity. Optimum adsorp
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5

Harnnarongchai, Wanlop, and Kantima Chaochanchaikul. "Effect of Blowing Agent on Cell Morphology and Acoustic Absorption of Natural Rubber Foam." Applied Mechanics and Materials 804 (October 2015): 25–29. http://dx.doi.org/10.4028/www.scientific.net/amm.804.25.

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The sound absorbing efficiency of natural rubber (NR) foam is affected by the cell morphology of foam. Potassium oleate (K-oleate) and sodium bicarbonate (NaHCO3) were used as blowing agents to create open-cell foam. Amounts of the blowing agent were varied from 0.5 to 8.0 part per hundred of rubber (phr) to evaluate cell size and number of foam cell as well as sound adsorption coefficient of NR foam. The NR foam specimens were prepared using mould and air-circulating oven for vulcanizing and foaming processes. The results indicated that K-oleate at 2.0 phr and NaHCO3 at 0.5 phr led to form NR
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6

Таmarkina, Ju V., I. B. Frolova, O. O. Velichko, and V. O. Кucherenko. "ADSORPTION OF PHENOL COMPOUNDS BY ACTIVATED CARBON FORMED DURING CARBONIZATION OF BROWN COAL WITH POTASSIUM HYDROXIDE." Journal of Coal Chemistry 2 (2021): 21–32. http://dx.doi.org/10.31081/1681-309x-2021-0-2-21-32.

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The aim of the work is to evaluate the adsorption capacity of activated carbons (ACs) from brown coal in relation to phenol (Ph) and 4-chlorophenol (CPh) and the influence of the AСs formation temperature under carbonization with potassium hydroxide on capacities. The samples of ACs were prepared by heating with KOH (1 g/g, 1 h) at a given temperature in the range of t=400-800°C and marked as AC(t). The ACs porosity characteristics were determined by low-temperature (77 K) adsorption – desorption nitrogen isotherms (Micromeritics ASAP 2020) calculated by the 2D-NLDFT method. They are as follow
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7

Leman, Abdul Mutalib bin, Muhammad Syafiq Muzarpar, Mohd Norhafsam Maghpor, et al. "Development of Palm Shell Base Activated Carbon for Volatile Organic Compounds (VOCs) Emissions Absorption." International Journal of Advanced Technology in Mechanical, Mechatronics and Materials 2, no. 1 (2021): 35–45. http://dx.doi.org/10.37869/ijatec.v2i1.42.

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High concentration of indoor air contaminant commonly released by human activities, furniture, building materials, carpets, cleaning product and paints. BTEX contains Benzene, Toluene, Ethylbenzene and Xylene (BTEX) is categorized into VOCs which are indicative of harmful chemicals especially for indoor air. Therefore, it needs the sampling media for absorption before it could be analyse in the specific laboratory. One of the challenging technology to absorb BTEX is by using Palm Shell Activated Carbon (PSAC). Malaysia has a second largest country that produce palm oil which led to abundant of
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Solihudin, Solihudin, Atiek Rostika Noviyanti, and Iman Rahayu. "Pengaruh Ukuran Partikel Arang Sekam Padi Dan Waktu Refluks terhadap Kadar Abudan Daya Serap Karbon Sekam Padi." Jurnal Natur Indonesia 17, no. 1 (2017): 33. http://dx.doi.org/10.31258/jnat.17.1.33-41.

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The highest content in rice husk is ash with its main component of silica. Silica in ash causes the low adsorption capacity. Activated carbon from rice husk can be obtained by lowering the ash content. The aim of this study is determine the effect of particle size of charcoal and reflux time the ash content using a solution of potassium carbonate. The activation of rice husk char was carried out by using reflux methods with a potassium carbonate solution. The resulted carbon was washed using hydrochloric acid tested using iodine and methylene blue to examine of its adsorbance. The particle siz
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Vu, Kim Long, Vitaly N. Klushin, Alexey V. Nistratov, Hoang Thi Tho, and Tran Thi Bich Ngoc. "Improving the properties of activated carbons based on organoplastics by chemical activation with potassium hydroxide (KOH)." Butlerov Communications 60, no. 10 (2019): 99–109. http://dx.doi.org/10.37952/roi-jbc-01/19-60-10-99.

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The possibility of processing wastes based on organoplastics generated at aviation enterprises into activated carbons by chemical activation using potassium hydroxide has been investigated. Powdered and granular activated carbons with a porous structure, characterized by the predominance of micropores or mesopores, are obtained that are superior in many respects to both adsorbents based on organoplastics and most industrial active carbons. The specific surface area of micropores of the obtained granular activated carbons is 1716 m2/g, the absorption capacity is 365 mg/g for methylene blue and
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10

Luo, Liu Dan, Hai Yi Huang, Jian Hong Bi, Lang Lang Tan, Hua Zhang, and Di Zhang. "Optimization of Malachite Green by KOH-Modified Grapefruit Peel Activated Carbon: Application of Response Surface Methodology." Applied Mechanics and Materials 529 (June 2014): 611–15. http://dx.doi.org/10.4028/www.scientific.net/amm.529.611.

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Response surface methodology (RSM) was utilized to optimize the best adsorbent conditions on Malachite Green in wastewater by the activated carbon which has been prepared from grapefruit peel with potassium hydroxide activating. Built on single-factor experiment, adsorbent dosage, pH, initial MG concentration and temperature were chosen as influencing factors during adsorption. The experimental mathematical model was arranged according to central composite design (CCD). The results shown that the best conditions were pH 9, initial MG concentration of 2000 mg/L, 1 g/L dosage of KAC and 40°C. Ma
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Dissertations / Theses on the topic "Potassium ethylxanthate – Absorption and adsorption"

1

Basilio, Cesar Indiongco. "Thermodynamics and electrochemistry of the chalcocite-potassium ethyl xanthate system." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/90909.

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Comprehensive thermodynamic calculations have been carried out on the chalcocite-KEX-water system based on complete mass balance equations which include both soluble and insoluble species. The calculations have yielded i) E<sub>h</sub>-pH stability diagrams for different KEX additions, ii) equilibrium concentrations and amounts of all the dissolved and insoluble species including those of CuX and CuX₂, iii) two- and three-dimensional plots showing the effect of E<sub>h</sub> and pH on the formation of selected species, and iv) minimum xanthate additions required to form CuX and CuX₂. These inf
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2

Pritzker, Mark David. "Thermodynamic and kinetic studies of galena in the presence and absence of potassium ethyl xanthate." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/76476.

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A study of the electrochemistry of the PbS-H₂O and PbS-KEX-H₂O systems has been made by carrying out thermodynamic calculations, electrochemical experiments and microflotation tests. Particular attention has been paid to how well this system can be described by equilibrium thermodynamics. The thermodynamic calculations are more comprehensive than previous ones of this type since they are based on a mass balance which includes both insoluble and soluble species. The data they provide include equilibrium concentrations of all dissolved species at any E<sub>h</sub> and pH and an E<sub>h</sub>-p
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3

Kim, DongSu. "Studies on the reactivity of thiophosphate/thiophosphinate and ethyl xanthate with precious metals." Diss., Virginia Tech, 1992. http://hdl.handle.net/10919/40071.

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Adsorption mechanisms of modified thiol collectors on gold, silver, and gold-silver alloys have been studied and compared with those of ethyl xanthate (EX). The modified thiol collectors include dicresyl monothiophosphate (DCMTP), dialkyl dithiophosphinate (DTPI) and monothiophosphinate (MTPI). In general, the adsorption mechanisms on silver and gold-silver alloys can be explained by the EC-mechanism involving an electron transfer step and a chemical reaction step. Thus, the adsorption should be controlled by the Eh of the electrochemical oxidation of the electrode involved and the pK of the m
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4

Lagerge, Serge. "Etude thermodynamique du mécanisme d'adsorption du complexe aurocyanure de potassium sur différents supports carbonés." Montpellier 2, 1995. http://www.theses.fr/1995MON20251.

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La comparaison des isothermes d'adsorption/desorption de kau(cn)#2 obtenues sur differents supports carbones (graphites, noir de carbone, charbons actifs) caracterises en detail par microcalorimetrie d'immersion, microcalorimetrie a flux de liquide, adsorption d'azote a 77 k, et porosimetrie au mercure montre que l'adsorption des complexes d'or se produit sous forme d'especes dicyanoaurates sur une tres faible fraction de la surface totale du charbon actif. L'inefficacite d'une grande partie de la surface du charbon actif est due d'une part a une importante structure microporeuse non accessibl
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5

Fellahi, Ahmed. "Influence de la température des racines sur la nutrition potassique de la tomate (Lycopersicon esculentum Mill. ) en condition contrôlée : aspect particulier concernant le rôle du rayonnement global." Aix-Marseille 3, 1995. http://www.theses.fr/1995AIX30073.

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L'etude de deux facteurs du milieu racinaire, temperature et concentration en potassium de la solution nutritive, a permis d'observer leur influence sur de jeunes plants de tomate, correspondant au stade de repiquage au champ. L'influence de la temperature des racines sur la synthese de matiere seche est surtout marquee au printemps quand le rayonnement global est eleve. L'influence de la concentration en potassium est preponderante en hiver quand le rayonnement global est faible et que la croissance des jours est importante. L'etude des chocs thermiques nous permet de noter que la reduction d
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6

Mallmann, Aimery de. "Modifications du benzène par adsorption sur des faujasites échangées par des ions alcalins." Paris 6, 1986. http://www.theses.fr/1986PA066347.

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L'évolution du spectre infrarouge du benzène adsorbe sur des faujasites est suivie en fonction de la composition chimique des adsorbants (zéolites désaluminées, zéolite y ou x, zéolites modifiées par des ions Na, Rb, etc) et de la quantité de benzène adsorbé. On note que 4 formes de benzène ont été mises en évidence, dont l'une est faiblement fixée sur les solides.
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Cullinane, John Timothy. "Thermodynamics and kinetics of aqueous piperazine with potassium carbonate for carbon dioxide absorption." Thesis, 2005. http://hdl.handle.net/2152/1530.

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8

Hilliard, Marcus Douglas 1977. "A predictive thermodynamic model for an aqueous blend of potassium carbonate, piperazine, and monoethanolamine for carbon dioxide capture from flue gas." Thesis, 2008. http://hdl.handle.net/2152/3900.

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The Electrolyte Nonrandom Two-Liquid Activity Coefficient model in Aspen PlusTM 2006.5 was used to develop a rigorous and consistent thermodynamic representation for the base sub-component systems associated with aqueous combinations of K₂CO₃, KHCO₃, MEA, and piperazine (PZ) in a mixed-solvent electrolyte system for the application of CO₂ absorption/stripping from coal fired power plants. We developed a new vapor-liquid equilibrium apparatus to measure CO₂, amine, and H2O vapor pressures at 40 and 60 oC. We found that the volatility of MEA and PZ can be approximated at 50 and 20 ppmv at 40°C f
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Books on the topic "Potassium ethylxanthate – Absorption and adsorption"

1

Leppinen, Jaakko. FTIR investigation of the reactions of ethyl xanthate with non-activated and activated sulfide minerals. Technical Research Centre of Finland, 1989.

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2

1943-, Rousseau Ronald W., Ferrell J. K, and Air and Energy Engineering Research Laboratory, eds. Performance and modeling of a hot potassium carbonate acid gas removal system in treating coal gas: Project summary. U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, 1988.

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