Low-cost Temperature Transition Mixtures (TTM) based on ethylene glycol/potassium hydroxide as reversible CO2 sorbents

2021 ◽  
pp. 117180
Author(s):  
Marcello Costamagna ◽  
Eleonora Micheli ◽  
Valentino Canale ◽  
Michele Ciulla ◽  
Gabriella Siani ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Potassium Hydroxide ◽  
Low Cost ◽  
Temperature Transition

scholarly journals Low-Cost Temperature Transition Mixtures (TTM) Based on Ethylene Glycol/potassium Hydroxide as Reversible CO2 Sorbents

2021 ◽  
Author(s):  
Marcello Costamagna ◽  
Eleonora Micheli ◽  
Valentino Canale ◽  
Michele Ciulla ◽  
Gabriella Siani ◽  
...  
Keyword(s):  
High Pressure ◽  
Ethylene Glycol ◽  
Potassium Hydroxide ◽  
Low Cost ◽  
Effect Of Temperature ◽  
Temperature Transition ◽  
Component Mixture ◽  
Multiple Absorption ◽  
Optimized Conditions ◽  
Kinetics Of

A low-cost Transition Temperature Mixture (TTM) has been synthesized by mixing ethylene glycol and potassium hydroxide as a new non-aqueous CO<sub>2</sub> sorbent. Boric acid has been added to ensure the reversibility of the system and a small amount of water to modulate the viscosity and optimize the performances. The resulting mixtures have been characterized in terms of viscosity, conductivity and density over temperature (therefore ionicity <i>via</i> Walden plots) and the effect of temperature, pressure and the kinetics of the absorption have been evaluated. Under optimized conditions, the four-component mixture EG/KOH/BA/H<sub>2</sub>O 3:1:1:3 can absorb 24 g<sub>CO2</sub>/kg<sub>sorbent</sub> in 30 minutes at 35°C at 1 atm (59 after 4 h) and 60 g<sub>CO2</sub>/kg<sub>sorbent</sub> in 30 minutes at high pressure (10 and 20 atm, 80 g<sub>CO2</sub>/kg<sub>sorbent</sub> after 50 min), while the desorption is quantitative after 30 minutes at only 60°C under a gentle N<sub>2</sub> flow. The system is robust enough to ensure multiple absorption/desorption cycles.

scholarly journals Low-Cost Temperature Transition Mixtures (TTM) Based on Ethylene Glycol/potassium Hydroxide as Reversible CO2 Sorbents

2021 ◽  
Author(s):  
Gianluca Ciancaleoni ◽  
Marcello Costamagna ◽  
Eleonora Micheli ◽  
Valentino Canale ◽  
Michele Ciulla ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Potassium Hydroxide ◽  
Low Cost ◽  
Temperature Transition

scholarly journals Low-Cost Temperature Transition Mixtures (TTM) Based on Ethylene Glycol/potassium Hydroxide as Reversible CO2 Sorbents

2021 ◽  
Author(s):  
Marcello Costamagna ◽  
Eleonora Micheli ◽  
Valentino Canale ◽  
Michele Ciulla ◽  
Gabriella Siani ◽  
...  
Keyword(s):  
High Pressure ◽  
Ethylene Glycol ◽  
Potassium Hydroxide ◽  
Low Cost ◽  
Effect Of Temperature ◽  
Temperature Transition ◽  
Component Mixture ◽  
Multiple Absorption ◽  
Optimized Conditions ◽  
Kinetics Of

A low-cost Transition Temperature Mixture (TTM) has been synthesized by mixing ethylene glycol and potassium hydroxide as a new non-aqueous CO<sub>2</sub> sorbent. Boric acid has been added to ensure the reversibility of the system and a small amount of water to modulate the viscosity and optimize the performances. The resulting mixtures have been characterized in terms of viscosity, conductivity and density over temperature (therefore ionicity <i>via</i> Walden plots) and the effect of temperature, pressure and the kinetics of the absorption have been evaluated. Under optimized conditions, the four-component mixture EG/KOH/BA/H<sub>2</sub>O 3:1:1:3 can absorb 24 g<sub>CO2</sub>/kg<sub>sorbent</sub> in 30 minutes at 35°C at 1 atm (59 after 4 h) and 60 g<sub>CO2</sub>/kg<sub>sorbent</sub> in 30 minutes at high pressure (10 and 20 atm, 80 g<sub>CO2</sub>/kg<sub>sorbent</sub> after 50 min), while the desorption is quantitative after 30 minutes at only 60°C under a gentle N<sub>2</sub> flow. The system is robust enough to ensure multiple absorption/desorption cycles.

scholarly journals Surface modification of date seeds (Phoenix dactylifera) using potassium hydroxide for wastewater treatment to remove azo dye

2018 ◽  
Vol 13 (4) ◽  
pp. 859-870 ◽  
Author(s):  
Abinaya Arunachalam ◽  
Rajib Ghosh Chaudhuri ◽  
Eldhose Iype ◽  
B. G. Prakash Kumar
Keyword(s):  
Experimental Data ◽  
Azo Dye ◽  
Potassium Hydroxide ◽  
Low Cost ◽  
Carbon Adsorbent ◽  
Phoenix Dactylifera ◽  
Third Order ◽  
23 Factorial Design ◽  
The Third ◽  
Equilibrium Adsorption Capacity

Abstract In this study, a low cost carbon adsorbent was prepared from date seeds. Their surface was modified with potassium hydroxide for use as an adsorbent for the removal of synthetic dye (methyl orange (MO)) from aqueous solutions. The effects of initial MO concentration, adsorbent dosage and temperature were studied. A two-cubed (23) factorial design was carried out on the experimental data, with two replications for the process optimization. The results showed that all three factors and their interactions up to the third order were significant for the removal efficiency of MO. Maximum equilibrium adsorption capacity was 66.26 mg/g at 318 K.

Preparation and Analysis of Homo-Polymer and Copolymer from Tetra-Coordinate Silicate

2012 ◽  
Vol 550-553 ◽  
pp. 752-756
Author(s):  
Jian Hua Song ◽  
San Jun Fan
Keyword(s):  
Free Radical ◽  
Ethylene Glycol ◽  
Radical Polymerization ◽  
Methyl Acrylate ◽  
Potassium Hydroxide ◽  
Free Radical Polymerization ◽  
Organic Silicon ◽  
Vinyl Benzyl

Highly reactive penta-coordinate organic silicon was prepared by the reaction of silica with ethylene glycol and potassium hydroxide, which reacted with 4-vinylbenzyl chloride to synthesize a new 4-vinyl benzyl tetra-coordinate silicate (VBTCS), and the new monomer was homo-polymerized and copolymerized with styrene and methyl acrylate via free radical polymerization, respectively. Tetra-coordinate silicon monomer, homo-polymer, and copolymers were characterized by IR, EA, TG, DSC, GPC etc.

scholarly journals Impact strength of surface treated SS316L wires reinforced PMMA**

2021 ◽  
Vol 30 (1) ◽  
pp. 272-278
Author(s):  
Sarmad A. Ibrahim ◽  
Sadeq H. Lafta ◽  
Wafaa A. Hussain
Keyword(s):  
Stainless Steel ◽  
Impact Strength ◽  
Ethylene Glycol ◽  
Low Cost ◽  
Wire Surface ◽  
Stainless Steel 316L ◽  
Cost Surface ◽  
The Impact ◽  
Graphite Rod ◽  
Bio Material

Abstract Stainless steel 316L (SS316L) as a significant bio-material, their wires were used to support the PMMA matrix. Two simple and low-cost surface pretreatments for SS316L wires were performed to enhance denture impact strength: mechanical scratching (treating SS316L wires with SiC powder inside a rotating container) and electrochemical anodizing. Three mechanical scratching samples for different periods of 60, 90 and 120min were prepared. Anodizing technique conditions were: Ethylene glycol with perchloric acid as an anodizing solution, 15V supplying and graphite rod as an anode. Anodizing process involved three pretreating periods of 15, 20, and 30min. All the prepared samples had dimensions of 65 × 10 × 3 mm. SEM technique showed different morphology nature involved holes, scratches and pores with a density of 104/μm2 and a crack length of 60μm. The PMMA reinforced with scratched stainless steel 316L wire surface for 120 min presented the highest impact strength value (42 kJ/m2) with (450.91%) increment. Anodizing samples showed a fluctuating behavior of samples with enhancing in the impact strength of anodizing wire for 20min of about 26.99 kJ/m2, which is still lower than that for scratched samples in average.

scholarly journals Therapeutic Applications of Ethanol: A Review

2019 ◽  
Vol 22 ◽  
pp. 525-535 ◽  
Author(s):  
Brendan Le Daré ◽  
Thomas Gicquel
Keyword(s):  
Ethylene Glycol ◽  
Alcohol Withdrawal ◽  
Withdrawal Syndrome ◽  
Low Cost ◽  
Alcohol Withdrawal Syndrome ◽  
World Health ◽  
Beneficial Effects ◽  
Track Record ◽  
Therapeutic Uses ◽  
Health Organization

Purpose: To review knowledge on therapeutic uses of ethanol and the latter’s effectiveness and safety profiles in a range of indications. Methods: MEDLINE and PubMed databases were searched for relevant peer-reviewed papers published in English between 1888 and 2018 using the following search terms: ethanol, therapeutic, alcohol withdrawal syndrome, antiseptic, antidote, methanol, ethylene glycol, neurolysis, embolization, cyst, sclerosing agent, sclerotherapy, arteriovenous malformations, ablating agent. Studies providing information about association between alcohol and therapeutic indications, or mechanic explanation for the association were included for review. Results: According to the World Health Organization, approximately three millions deaths worldwide are attributable to alcohol consumption each year. However, the low-to-moderate consumption of ethanol has a number of beneficial effects (mainly on cardiovascular mortality and diabetes). Hence, ethanol has an unusual spectrum of effects that seems interesting for therapeutic purposes. Ethanol’s risk-benefit ratio appears to be positive in some therapeutic indications such as antidote to methanol or ethylene glycol poisoning, neurolysis, alcohol withdrawal syndrome, or antiseptic. Conclusion: With the development of interventional radio technologies, and thus extremely precise access to anatomical structures, alcohol has been given new indications - particularly as an embolization, sclerosing or ablation agent. Moreover, constant progress in our knowledge of ethanol’s pharmacodynamics might highlight other therapeutic indications for this compound in the future. Ethanol’s low cost and wide availability make it a valuable therapeutic agent, compared with other reference treatments. Furthermore, ethanol has a long track record of safety and effectiveness in the indications mentioned above.

Exploration of Using Deep Eutectic Solvents to Separate Methyl Palmitate from Simulated Biodiesel Mixtures

2015 ◽  
Vol 1101 ◽  
pp. 249-251 ◽  
Author(s):  
Bao Kun Tang ◽  
Yu Jin Lee ◽  
Kyung Ho Row
Keyword(s):  
Ethylene Glycol ◽  
High Purity ◽  
Methyl Palmitate ◽  
Low Cost ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Purification Process ◽  
Ratio Increase ◽  
Biodiesel Purification

Biodiesel purification from the crude biodiesel product has attracted much attention in recent years, and one low cost and simple purification process is urgent to explore. The separation of methyl palmitate from the crude biodiesel products is a key point. In this work, a series of choline chloride based deep eutectic solvents (DESs) is explored as a solvent for separation of methyl palmitate from the simulated biodiesel product. The work showed that the choline chloride-ethylene glycol DES had a excellent effect on the separation of methyl palmitate, and high purity of methyl palmitate were obtained with the choline chloride to ethlene glycol ratio decrease or with the choline chloride-ethylene glycol DES to biodiesel ratio increase.

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