Research on Environmental Friendly Floatation Agent

2011 ◽  
Vol 421 ◽  
pp. 810-814
Author(s):  
Wei Wei Xie ◽  
Xiao Wei He ◽  
Kai Wu Huang ◽  
Yu Ran Zhang ◽  
Cong Kun Liu
Keyword(s):  
High Selectivity ◽  
Diesel Oil ◽  
Ash Content ◽  
Good Stability ◽  
Excellent Performance ◽  
Coal Flotation ◽  
Material Recovery ◽  
Environmental Friendly ◽  
Oil Water ◽  
Flotation Collector

A newly developed coal flotation collector EDO and its flotation characteristics for three Shanxi different coals were introduced in this paper. EDO was an emulsion composed by diesel oil, water and independent development surfactant PGS. Compared flotation experiments show that, at the same dosage, EDO gives 2~5% combustile material recovery promotion than typical collector with only a slightly ash content increment, but saving over 70% diesel oil, and improves the floatation speed. EDO could promote the dispersion of diesel oil in the slurry, so that the efficiency of floatation was improved. The flotation results showed that the EDO had the characteristics of excellent performance, high selectivity and good stability.

Study on the Floatation Effect of ZFC Agent for Difficult Slime

2011 ◽  
Vol 361-363 ◽  
pp. 316-319
Author(s):  
Wei Wei Xie ◽  
Lan Hong He ◽  
Jia Wang ◽  
Xiao Wei He
Keyword(s):  
High Selectivity ◽  
Diesel Oil ◽  
Good Stability ◽  
Excellent Performance ◽  
Coal Flotation ◽  
Environmental Friendly ◽  
Flotation Collector

This paper introduced a newly developed coal flotation collector ZFC and its flotation characteristics for Shanxi three different coal samples. ZFC was an emulsion composed by 27% diesel oil, 70% water and 3% homemade surfactant PGS. The surfactant PGS was synthesized with environmental friendly reproducible oil and several surfactants. The flotation results showed that the ZFC had the characteristics of excellent performance, high selectivity and good stability. ZFC could promote the dispersion of diesel oil in the slurry, so that the efficiency of floatation was improved and about 70% diesel oil was saved.

scholarly journals The Separation of Emulsified Water/Oil Mixtures through Adsorption on Plasma-Treated Polyethylene Powder

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1086
Author(s):  
Asma Abdulkareem ◽  
Anton Popelka ◽  
Patrik Sobolčiak ◽  
Aisha Tanvir ◽  
Mabrouk Ouederni ◽  
...  
Keyword(s):  
Droplet Size ◽  
Contact Time ◽  
Diesel Oil ◽  
Polluted Water ◽  
Order Kinetic ◽  
Atmospheric Conditions ◽  
Sonication Time ◽  
Oil Concentration ◽  
Oil Water ◽  
Emulsified Water

This paper addresses the preparation and characterization of efficient adsorbents for tertiary treatment (oil content below 100 ppm) of oil/water emulsions. Powdered low-density polyethylene (LDPE) was modified by radio-frequency plasma discharge and then used as a medium for the treatment of emulsified diesel oil/water mixtures in the concentration range from 75 ppm to 200 ppm. Plasma treatment significantly increased the wettability of the LDPE powder, which resulted in enhanced sorption capability of the oil component from emulsions in comparison to untreated powder. Emulsions formed from distilled water and commercial diesel oil (DO) with concentrations below 200 ppm were used as a model of oily polluted water. The emulsions were prepared using ultrasonication without surfactant. The droplet size was directly proportional to sonication time and ranged from 135 nm to 185 nm. A sonication time of 20 min was found to be sufficient to prepare stable emulsions with an average droplet size of approximately 150 nm. The sorption tests were realized in a batch system. The effect of contact time and initial oil concentrations were studied under standard atmospheric conditions at a stirring speed of 340 rpm with an adsorbent particle size of 500 microns. The efficiency of the plasma-treated LDPE powder in oil removal was found to be dependent on the initial oil concentration. It decreased from 96.7% to 79.5% as the initial oil concentration increased from 75 ppm to 200 ppm. The amount of adsorbed oil increased with increasing contact time. The fastest adsorption was observed during the first 30 min of treatment. The adsorption kinetics for emulsified oils onto sorbent followed a pseudo-second-order kinetic model.

Eco-Friendly Synthesis of Sulphonic Acid Oxime Esters Catalyzed by 2-(1H-Benzotriazole-1-yl)-1,1,3,3-Tetramethyluronium Tetrafluoroborate

2014 ◽  
Vol 525 ◽  
pp. 93-96
Author(s):  
Wei Shi ◽  
Ji Ming Zhang ◽  
Jian Hua Zhou ◽  
Jian Hua Zhou ◽  
Song Song Ding
Keyword(s):  
High Selectivity ◽  
Sulphonic Acid ◽  
Present Approach ◽  
High Yield ◽  
Facile Synthesis ◽  
Reaction Duration ◽  
Mild Conditions ◽  
Environmental Friendly

Herein we describle a facile synthesis of sulphonic acid oxime esters in acetonitrile from the corresponding sulphonic acids and oximes catalyzed by the environmental friendly 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) in the presence of triethylamine (TEA) under mild conditions. The present approach offers the advantages of a clean reaction, simple methodology, employing readily available catalyst, short reaction duration, high selectivity and high yield.

Role of Magnesium Salts in Coal De-Ashing by Flotation

2021 ◽  
Vol 58 (1) ◽  
pp. 51-58
Author(s):  
Rawya Gamal ◽  
Nader A.A. Edress ◽  
Khaled A. Abuhasel ◽  
Ayman A. El-Midany ◽  
Salah E. El-Mofty
Keyword(s):  
Particle Size ◽  
Strong Interaction ◽  
Statistical Design ◽  
Ash Content ◽  
The Other ◽  
Pulp Density ◽  
Statistical Design Of Experiments ◽  
Coal Flotation ◽  
Magnesium Salts

Abstract The most frequently investigated salts in coal flotation are chlorides. However, seawater contains additional salts such as sulfates. In coal flotation, magnesium chlorides showed the best results in terms of higher yield and lower ash content compared to the other magnesium salts studied. Therefore, two magnesium salts were tested in this investigation, namely magnesium chloride and magnesium sulfate. The effect of the magnesium salts as well as the optimization of coal flotation were investigated by statistical design of experiments in terms of pulp density, particle size, conditioning time and different dosages of MgCl2 and MgSO4. The flotation results obtained by statistical design show that the ash content was lowest at 8.2% when a mixture of 2 kg/t MgSO4 and 2 kg/t MgCl2 has been used, with pulp density 20%, particle size 400 lm and conditioning time 15 min. The particle size plays an important role in reducing the ash content when the conditioning time has been extended and pulp density has been reduced. The strong interaction between the salts hinders the reduction of the ash content to less than 8.2%.

Evaluating and Testing of Gas Hydrate Anti-Agglomerants in (Natural Gas + Diesel Oil + Water) Dispersed System

2014 ◽  
pp. 381-386
Author(s):  
Chang-Yu Sun ◽  
Jun Chen ◽  
Ke-Le Yan ◽  
Sheng-Li Li ◽  
Bao-ZiPeng ◽  
...  
Keyword(s):  
Natural Gas ◽  
Gas Hydrate ◽  
Diesel Oil ◽  
Dispersed System ◽  
Oil Water

Flow characteristics and morphology of hydrate slurry formed from (natural gas+diesel oil/condensate oil+water) system containing anti-agglomerant

2012 ◽  
Vol 84 ◽  
pp. 333-344 ◽  
Author(s):  
Bao-Zi Peng ◽  
Jun Chen ◽  
Chang-Yu Sun ◽  
Abhijit Dandekar ◽  
Shao-Hui Guo ◽  
...  
Keyword(s):  
Natural Gas ◽  
Water System ◽  
Flow Characteristics ◽  
Diesel Oil ◽  
Oil Water

Green synthesis of 3D SnO2/graphene aerogels and their application in lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (50) ◽  
pp. 39746-39751 ◽  
Author(s):  
Chen Gong ◽  
Yongquan Zhang ◽  
Mingguang Yao ◽  
Yingjin Wei ◽  
Quanjun Li ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion ◽  
Excellent Performance ◽  
Graphene Aerogels ◽  
Environmental Friendly

3D SnO2/GAs were constructed by a simple, facile and environmental friendly process, and show excellent performance when used as anode material in lithium ion batteries.

Cellulose nanofibre aerogel filter with tuneable pore structure for oil/water separation and recovery

RSC Advances ◽  
2016 ◽  
Vol 6 (26) ◽  
pp. 21435-21438 ◽  
Author(s):  
Zhiyong He ◽  
Xiwang Zhang ◽  
Warren Batchelor
Keyword(s):  
Pore Structure ◽  
Excellent Performance ◽  
Water Separation ◽  
Cellulose Aerogel ◽  
Oil Water Separation ◽  
Oil Water

In present work, a cellulose aerogel filer with excellent performance in oil/water separation was presented.

scholarly journals Classification of Turkish safflower oils based on their fatty acid and sterol profiles using multivariate techniques

2019 ◽  
Vol 11 (2) ◽  
pp. 259-265
Author(s):  
Asli Yorulmaz ◽  
Aydin Ünay
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Total Sterol ◽  
Ash Content ◽  
Multivariate Techniques ◽  
Oil Water ◽  
Fatty Acid Compositions

The aim of the current study was to classify Turkish safflower oils based on sterol and fatty acid composition. For this purpose, 37 samples from five different safflower varieties (Dinçer, Linas, Remzibey-05, Balcı and Olas) grown in the same agricultural and environmental conditions were obtained. Seeds were evaluated for their oil, water and ash content. Oils of seeds were extracted by solvent extraction and oils were analyzed for their sterols and fatty acids. Results have shown that Linas and Olas varieties’ oil contents were significantly higher than others’. There were clear differences in fatty acid compositions of various cultivars. Remzibey-05 and Olas varieties were different from others by their higher oleic and relatively lower linoleic acid ratios. Total sterol contents of oils ranged among 2700-3626 mg/kg and the main phytosterol was β-sitosterol covering 43.27-48.16 % of the total sterols

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