Selection of organic solvents for in situ extraction of fermentation products fromClostridium thermohydrosulfuricum cultures

1989 ◽  
Vol 3 (5) ◽  
pp. 315-320 ◽  
Author(s):  
Christopher Job ◽  
Cosima Schertler ◽  
Walter L. Staudenbauer ◽  
Eckhart Blass
Keyword(s):  
Organic Solvents ◽  
In Situ Extraction ◽  
Fermentation Products ◽  
Selection Of

Suitability of Natural Geomedia for Radwaste Storage

1982 ◽  
Vol 15 ◽  
Author(s):  
W. S. Fyfe
Keyword(s):  
Rock Properties ◽  
Fracture Flow ◽  
Time Prediction ◽  
Sedimentary Sequences ◽  
Rock Types ◽  
Direct Observations ◽  
Long Time ◽  
Mining Disturbance ◽  
Selection Of

ABSTRACTSelection of the best rock types for radwaste disposal will depend on their having minimal permeability, maximal flow dispersion, minimal chance of forming new wide aperture fractures, maximal ion retention, and minimal thermal and mining disturbance. While no rock is perfect, thinly bedded complex sedimentary sequences may have good properties, either as repository rocks, or as cover to a repository.Long time prediction of such favorable properties of a rock at a given site may be best modelled from studies of in situ rock properties. Fracture flow, dispersion history, and geological stability can be derived from direct observations of rocks themselves, and can provide the parameters needed for convincing demonstration of repository security for appropriate times.

scholarly journals Liquid Perfluorodecalin Application for In Situ Extraction and Enhanced Naphthoquinones Production in Arnebia euchroma Cell Suspension Cultures

2014 ◽  
Vol 172 (5) ◽  
pp. 2618-2627 ◽  
Author(s):  
Katarzyna Sykłowska-Baranek ◽  
Maciej Pilarek ◽  
Michał Cichosz ◽  
Agnieszka Pietrosiuk
Keyword(s):  
Cell Suspension ◽  
Cell Suspension Cultures ◽  
Suspension Cultures ◽  
In Situ Extraction ◽  
Arnebia Euchroma

Toxicity of organic solvents used in situ in microbial fermentation

1995 ◽  
Vol 9 (4) ◽  
pp. 247-252 ◽  
Author(s):  
Ján Marták ◽  
Michal Rosenberg ◽  
Štefan Schlosser ◽  
L'udmila Krištofíková
Keyword(s):  
Organic Solvents ◽  
Microbial Fermentation

Novel environment friendly olive pomace-cyclohexanone formaldehyde composite resin

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Selda Sert ◽  
Nilgün Kızılcan
Keyword(s):  
Organic Solvents ◽  
Condensation Reaction ◽  
Agricultural Waste ◽  
Composite Resins ◽  
Formaldehyde Resin ◽  
Olive Pomace ◽  
Adhesion Properties ◽  
Content Type ◽  
Naoh Solution

Purpose Cyclohexanone-formaldehyde resin (CFR) was in situ modified with olive pomace (OP) in the presence of sodium hydroxide. The purpose of this study is to produce eco-friendly OP modified cyclohexanone composite resins (OPCFCR) with a one-step method that has higher condensation reaction temperature than CFR. The water absorption properties, gloss value and cross-cut adhesion properties of the product were investigated. Design/methodology/approach Cyclohexanone, formalin (37% aqueous solution) and tannin were mixed and 20% aqueous NaOH solution was added to produce the resin. OP has environmentally friendly bio-based lignin, cellulose and phenolic compounds and the OP structure has been incorporated into the structure of the CFR resin during the in situ modification, such as resole resin and polysaccharide. The weights of pomace were used as 5% and 10% of the weight of cyclohexanone in cyclohexanone-formaldehyde composite resins, respectively. Findings There is an improvement in the properties of the OPCFCR produced from an agricultural waste that is very abundant in Gulf of Edremit region of Balikesir. The OPCFCRs were soluble in common organic solvents. The product OPCFCR has a dark red-brown color. Research limitations/implications The reaction mixture must be stirred continuously. Subsequently, 37% formalin was added dropwise in total while refluxing. The amount of aqueous NaOH solution is limited as the formed resin may become insoluble in common organic solvents. At the end of the reaction, a water-insoluble resin is obtained. Practical implications This study provides the application of ketonic resins. The OPCFCR containing phenolic groups may also promote the adhesive strength of a coating. Social implications These resins may be used for the preparation of adhesive. OP, with a large amount of catechol groups, was considered for reducing the formaldehyde emission level on the adhesive system. Originality/value OPCFCR has been synthesized in the presence of a base catalyst. Environmental and ecological concerns have increased the attention paid by chemical industry to renewable raw materials.

An in-situ extraction–preconcentration method using ionic liquid-based surfactants for the determination of organic contaminants contained in marine sediments

Talanta ◽  
2012 ◽  
Vol 99 ◽  
pp. 972-983 ◽  
Author(s):  
Bárbara Delgado ◽  
Verónica Pino ◽  
Jared L. Anderson ◽  
Juan H. Ayala ◽  
Ana M. Afonso ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Marine Sediments ◽  
Organic Contaminants ◽  
In Situ Extraction ◽  
Preconcentration Method ◽  
Extraction Preconcentration

scholarly journals Strategic selection of an optimal sorbent mixture for in-situ remediation of heavy metal contaminated sediments: Framework and case study

2012 ◽  
Vol 105 ◽  
pp. 1-11 ◽  
Author(s):  
Y.W. Chiang ◽  
R.M. Santos ◽  
K. Ghyselbrecht ◽  
V. Cappuyns ◽  
J.A. Martens ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Contaminated Sediments ◽  
In Situ Remediation ◽  
Selection Of
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