Pilot-Scale Guayule Processing Using Countercurrent Solvent Extraction Equipment

1984 ◽  
Vol 57 (2) ◽  
pp. 344-350 ◽  
Author(s):  
G. E. Hamerstrand ◽  
R. R. Montgomery
Keyword(s):  
Solvent Extraction ◽  
Cell Walls ◽  
Solvent System ◽  
Pilot Scale ◽  
Processing Technology ◽  
Oilseed Processing ◽  
Extraction Equipment ◽  
Solvent Action

Abstract Conventional oilseed processing technology and equipment were successfully utilized to extract rubber from guayule shrubs that had been pretreated to render the rubber accessible to solvent action. When the chopped and ground shrubs are subjected to sufficient shear to rupture cell walls and form agglomerates of material, they can be handled readily in the essentially unmodified percolation, solvent extraction equipment. Although some of the parameters associated with the solvent system have not, as yet, been optimized, rubber recoveries in excess of 80% were achieved with both freshly harvested “lush” shrubs and shrubs that had been field-dried and stored several weeks before processing.

scholarly journals Solvent extraction for metal and water recovery from industrial wastes and effluents

2011 ◽  
Vol 64 (1) ◽  
pp. 51-55 ◽  
Author(s):  
Marcelo Borges Mansur
Keyword(s):  
Solvent Extraction ◽  
Energy Savings ◽  
Hazardous Materials ◽  
Pilot Scale ◽  
Industrial Wastes ◽  
Raw Material ◽  
Water Recovery ◽  
Feasible Method ◽  
Zinc Industry ◽  
Scale Data

The use of solvent extraction to recover metals and water from industrial residues is highlighted in this work. The method was applied (1) to selectively concentrate Zn from effluents generated by the zinc industry, (2) to separate Zn and Fe from spent pickling effluents produced by the hot-dip galvanizing industry, and (3) to recover Co and Ni from spent batteries. Batch and pilot scale data was used to point out solvent extraction as a feasible method to reuse both metals and water thus resulting in energy savings with reducing environmental impacts, minimizing costs required to transport hazardous materials to waste sites, to replace the discharged wastewater and to produce the raw material that would be previously discharged as wastes.

Effect of Contact with Organic Extractant LIX 84IC during Solvent Extraction Process on the Re-Establishment of Growth of Bioleaching Microorganisms

2013 ◽  
Vol 825 ◽  
pp. 340-343
Author(s):  
Carol S. Davis-Belmar ◽  
Mauricio Acosta ◽  
Valerie Schoen ◽  
George Rautenbach ◽  
Cecilia Demergasso
Keyword(s):  
Solvent Extraction ◽  
Cell Walls ◽  
Low Cost ◽  
Latency Period ◽  
Extraction Process ◽  
Sulfur Oxidizing ◽  
Organic Extractant ◽  
Organic Extractants ◽  
Different Strains ◽  
Detrimental Impact

Solvent extraction (SX) used for the recovery of copper is a primary low-cost hydrometallurgical process applied extensively in cases like commercial bioleaching operations. Bioleaching solutions during SX treatment are exposed to important concentrations of organic extractants, a step that has a detrimental impact on microbial activity. The following work studies and determines the effect of this exposure on the re-establishment of growth and activity of different bioleaching microorganisms after contact and phase separation. Different bioleaching iron and sulfur -oxidizing microorganisms were tested. After contact with an industrially utilized organic extractant (LIX 84IC as extractant and Oxform SX12 as solvent), cultures were grown and their substrate utilization monitored.Acidithiobacillus ferrooxidansshowed only a slight increase in doubling time without significant latency period. On the contrary, for bothSulfobacillusspecies studied,S. thermosulfidooxidansandS. thermotolerans, were strongly impacted showing important lag phases before growth could take place. Additionally, the SX reagent showed disruption of cell walls and protein liberation during contact with all the different strains studied.

Effect of liquid and air flowrates on the efficiency of a two-stage air-assisted solvent extraction system in pilot scale

2020 ◽  
Vol 153 ◽  
pp. 106376
Author(s):  
Soroush Rahmati ◽  
Ali Ahmadi ◽  
Mohammad Raouf Hosseini ◽  
Mehdi Molaei Nasab
Keyword(s):  
Solvent Extraction ◽  
Pilot Scale ◽  
Extraction System ◽  
Two Stage ◽  
Solvent Extraction System
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