Physical and chemical adsorption of long chain compounds on radioactive metals

1951 ◽  
Vol 47 ◽  
pp. 900 ◽  
Author(s):  
F. P. Bowden ◽  
A. C. Moore
Keyword(s):  
Chemical Adsorption ◽  
Chain Compounds ◽  
Physical And Chemical ◽  
Long Chain

scholarly journals A review of biomass materials for advanced lithium–sulfur batteries

2019 ◽  
Vol 10 (32) ◽  
pp. 7484-7495 ◽  
Author(s):  
Huadong Yuan ◽  
Tiefeng Liu ◽  
Yujing Liu ◽  
Jianwei Nai ◽  
Yao Wang ◽  
...  
Keyword(s):  
Recent Progress ◽  
Low Cost ◽  
High Abundance ◽  
Chemical Adsorption ◽  
Environmental Friendliness ◽  
Lithium Sulfur Batteries ◽  
Biomass Materials ◽  
Physical And Chemical ◽  
Lithium Sulfur

This review summarizes recent progress of biomass-derived materials in Li–S batteries. These materials are promising due to their advantages including strong physical and chemical adsorption, high abundance, low cost, and environmental friendliness.

scholarly journals Stereospecific Hydroxylation of Long Chain Compounds by a Species of Torulopsis

1969 ◽  
Vol 244 (4) ◽  
pp. 882-888 ◽  
Author(s):  
E Heinz ◽  
A P Tulloch ◽  
J F T Spencer
Keyword(s):  
Chain Compounds ◽  
Long Chain

Polytypic structure and low-frequency Raman spectra of long-chain compounds: Stearic acid E form

1993 ◽  
Vol 24 (8) ◽  
pp. 527-532 ◽  
Author(s):  
Fumitoshi Kaneko ◽  
Masamichi Kobayashi ◽  
Hirotoshi Sakashita
Keyword(s):  
Stearic Acid ◽  
Raman Spectra ◽  
Low Frequency ◽  
Chain Compounds ◽  
Long Chain

scholarly journals Application of Waste Engine Oil for Improving Ilmenite Flotation Combined with Sodium Oleate Collector

Minerals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1242
Author(s):  
Qingyao Yu ◽  
Fuqiang Tian ◽  
Yijun Cao ◽  
Guixia Fan ◽  
Haiqing Hao ◽  
...  
Keyword(s):  
Sodium Oleate ◽  
Strong Interaction ◽  
Adsorption Mechanism ◽  
Engine Oil ◽  
Molar Ratio ◽  
Chemical Adsorption ◽  
Synergetic Effects ◽  
Waste Engine Oil ◽  
Environmentally Friendly Approach ◽  
Long Chain

Collectors commonly have synergetic effects in ores flotation. In this work, a waste engine oil (WEO) was introduced as a collector to an ilmenite flotation system with sodium oleate (NaOL). The results show that the floatability of ilmenite was significantly improved by using WEO and NaOL as a combined collector. The recovery of ilmenite was enhanced from 71.26% (only NaOL) to 93.89% (WEO/NaOL combined collector) at the pH of 6.72. The optimum molar ratio of NaOL to WEO was about 2.08 to 1. The WEO and NaOL also have synergetic effects for the collection of ilmenite, because to obtain the ilmenite recovery of 53.96%, the dosage of 45 mg/L NaOL is equal to 38.56 mg/L WEO/NaOL combined collector (30 mg/L NaOL + 8.56 mg/L WEO). In other words, 15 mg/L of NaOL can be replaced by 8.56 mg/L of WEO. It is an effective way to reduce the dosage of the collector and reuse WEO. Therefore, it is a highly valuable and environmentally friendly approach for WEO reuse. WEO mainly consists of oxygen functional groups, aromatics, and long-chain hydrocarbons, especially for the RCONH2 and RCOOH, thereby forming a strong interaction on the ilmenite surface. The adsorption mechanism of waste engine oil and sodium oleate on the ilmenite surface is mainly contributed by chemical adsorption. Therefore, WEO exhibits superior synergistic power with NaOL as a combined collector. Herein, this work provided an effective collector for ilmenite flotation and a feasible approach for reducing NaOL dosage and recycling WEO.

Excess heat capacities and excess volumes of tetraalkyltin compounds: . Effect of correlations of molecular orientations and steric hindrance. Part 1

1984 ◽  
Vol 62 (6) ◽  
pp. 1008-1015 ◽  
Author(s):  
Bernard Riedl ◽  
Geneviève Delmas
Keyword(s):  
Steric Hindrance ◽  
Central Atom ◽  
Orientational Order ◽  
Excess Volumes ◽  
Pure Liquid ◽  
Flory Theory ◽  
Flow Calorimeter ◽  
Alkyl Chains ◽  
Chain Compounds ◽  
Long Chain

A Picker flow calorimeter has been used to obtain molar excess capacities [Formula: see text] through the concentration range at 25 °C for the systems [Formula: see text] where R is the alkyl group CnH2n+1, (n = 1, 2, 3, 4, 8, 12). Excess volumes have also been measured for the mixtures. Two contributions to [Formula: see text] and vE were investigated: those associated with disordering the long alkyl chains and with steric hindrance. The steric hindrance contribution has been found to occur for molecules having a highly substituted central atom. The sign of this contribution is negative in hE and positive in [Formula: see text], indicative of an ordering or loss of mobility for the molecules going from pure liquid to solution. The [Formula: see text] results confirm the more sterically hindered character of the ethyl and propyl derivatives already found with hE. The separation of the disorder and steric contribution is possible in systems involving long-chain compounds. It is found that the orientational order contribution diminishes more slowly with temperature than the steric hindrance effect. The trend of vE in the series is reasonably well predicted by the Prigogine–Patterson–Flory theory.

scholarly journals Temperature-dependent mechanisms of DOM removal by biological activated carbon filters

2019 ◽  
Vol 5 (12) ◽  
pp. 2232-2241
Author(s):  
Nashita Moona ◽  
Urban J. Wünsch ◽  
Mia Bondelind ◽  
Olof Bergstedt ◽  
Tugba Sapmaz ◽  
...  
Keyword(s):  
Organic Matter ◽  
Activated Carbon ◽  
Microbial Activity ◽  
Active Carbon ◽  
Chemical Adsorption ◽  
Temperature Dependent ◽  
Biological Activated Carbon ◽  
Removal Mechanisms ◽  
Organic Matter Fractions ◽  
Physical And Chemical

Physical and chemical adsorption by aged biological active carbon (BAC) filters were observed for some organic matter fractions, and may represent important removal mechanisms during periods of low microbial activity.

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