The purpose of work is to evaluate the 4-chlorophenol (CP) adsorption capacity brown coal activated carbons (ACs) prepared at different temperature KOH activation. ACs were obtained in three stages: 1) impregnation with a solution, 2) heating (4 deg/min) argon given t (400-800°C) and exposure for 1 h, 3) cooling, washing from KOH, drying. samples are designated as AC(t). Based on N2 adsorption-...

Abstract This study aims to examine the flocculation efficiency of Porphyridium purpureum (i.e. a red marine microalga with high content pigments and fatty acids) grown in seawater medium using polyacrylamide polymers alkaline flocculation. Polymers Flopam™ FO3801 achieved highest over 99% at optimal dose 21 mg per g dry biomass through charge neutralisation bridging mechanism. The addition sod...

The application of calorimetric principles to the determination of phosphorus is especially desirable in view of the long drawn out and laborious gravimetric method now customarily employed. The accuracy of calorimetric methods, the ease with which most calorimetric procedures are carried on and their employment where only small amounts of material are available for analysis would make a reliab...

A neutralizing agent combination strategy was developed to enhance the succinic acid production by Actinobacillus succinogenes ATCC 55618. First, a maximal succinic acid production of 48.2 g/L was obtained at a culture pH of 7.5. Second, NaOH and KOH were screened to identify the optimal neutralizing agent for pH control. However, the production of succinic acid did not increase, and severe cel...

Interstitial Fluid Displacement (IFD) is a new and novel method for separating cesium from saltcake waste. It was identified by reevaluating fundamental factors of the saltcake recovery system, such as physical and chemical properties of saltcake, experience from other technical disciplines and industries, processing rate requirements, process safety requirements, and use of proven-successful p...

Highly reproducible Fourier transform infrared (FTIR) spectra from both single onion (Allium cepa) cell walls and their constituent polymers were obtained under a variety of sampling conditions. The specificity of the chemical extraction sequence used in the preparation of the material was confirmed: pectins only are extracted by cyclohexanediaminetetraacetic acid and sodium carbonate, whereas ...

Esters and tertiary amides were efficiently reduced to their corresponding alcohols and amines in high yields under mild and environmentally friendly conditions. The presented KOH-catalysed system involves a simple hydrosilylation procedure that is carried out under solvent-free conditions and does not require the use of inert conditions.

BACKGROUND Cats are frequent carriers of Microsporum canis and veterinary students are at high risk of exposure and acquisition of the organism a la infección. OBJECTIVES An outbreak of zoonotic ringworm carried by a litter of stray cats is described. Four veterinary students, four dogs, and six cats living in five separate locations were affected. All had direct or indirect contact with the ...

Using an optimized KOH activation procedure we prepared highly porous graphene scaffold materials with SSA values up to 3400 m(2) g(-1) and a pore volume up to 2.2 cm(3) g(-1), which are among the highest for carbon materials. Hydrogen uptake of activated graphene samples was evaluated in a broad temperature interval (77-296 K). After additional activation by hydrogen annealing the maximal exce...