Magnesium chloride hexahydrate and magnesium nitrate were tested for their thermal energy storage in a mixture with carbon materials. The graphite, graphene zeolite-templated replicas used as nucleating agent to supress supercooling. addition of any type into did not lead decrease the supercooling significant enthalpy fusion crystallisation was observed. mixtures after cycling apparently wet, i...

Hydrogen sulfide, which is produced by sewer biofilms as a result of sulfate reduction under anaerobic conditions, has since long been identified as a major cause of corrosion and odour problems in a sewer system. Dosing of various types of chemicals to wastewater is widely used by the water industry as a control measure for these problems. Oxygen/air, nitrate salts, iron salts and magnesium hy...

Materials. Ethylbromoacetate (97%), potassium carbonate (99%), diethyl ether (99.8%), ethylenediamine (99%), dichloromethane (99.6%), sodium triacetoxyborohydride (97%), sodium borohydride (98%), propionaldehyde (97%), poly(ethylene glycol) methyl ether thiol (PEG-SH, average mw 2000), formic acid (96%), formaldehyde (37% wt in H2O), sodium hydroxide(97%), propionaldehyde (97%), trifluoroacetic...

The present study calculates the Water Quality Index (W.Q.I.) of Pariyej Lake and assesses the impact of industries, agriculture and human activities. Physico – chemical parameters were monitored for the calculation of W.Q.I. for the rainy, winter and summer seasons. The parameters namely PH, Total hardness, TDS, Calcium, Chloride, Nitrate, Sulphate, DO and BOD values were within the permissibl...

The present paper deals with variability in snow chemistry of various sites spread in six districts of the Kashmir Himalayan valley, experiencing frequent snow fall during winter ( Dec.Feb). Chemical composition of fresh snow samples shows wide changes in pH (5.8–7.3), dissolved oxygen content (22-26 mg L-1), and total alkalinity (2-3 mg L-1). The levels ( mg L-1) of calcium (13.3– 28 ), magnes...

In this paper, kinetics of DC electrophoretic deposition EPD of carbon nanotubes CNTs is investigated. Carbon nanotubes suspended in pure ethanol with addition of magnesium nitrate was used as deposition media. The effect of main EPD parameters such as deposition time, applied voltage and the CNT concentration on deposit yield was investigated. The variation of current density vs. time and the ...

We describe a novel combustion synthesis for the preparation of Nanomagnesia (NM) and its application in water purification. The synthesis is based on the self-propagated combustion of the magnesium nitrate trapped in cellulose fibers. Various characterization studies confirmed that NM formed is crystalline with high phase purity, and the particle size varied in the range of 3-7nm. The fluoride...

In this research, the fabrication of transparent Alumina was done by spark plasma sintering (SPS). Two types alpha and gamma powders with particle size 200 50 nm were used, respectively. The assisted materials used in research magnesium nitrate lanthanum nitrate, each which 100 ppm using a chemical precipitation process. Calcination performed at 800°C resulting subjected to SPS 1500 °C rate °C/...

We investigated magnesium (Mg2+) ion uptake by Chlorella vulgaris under mixotrophic growth conditions (10 g/L of glucose) in a stirred photo-bioreactor. The culture nitrate and glucose consumptions were followed and analyzed during the experiments. The cellular chlorophyll α concentration decreased during exponential growth, indicating an adaptation to heterotrophic metabolism. The partition of...

Different compositions of liquid media were used for their efficacy in the production of beta-galactosidase by Aspergillus oryzae in submerged fermentation. Enzyme production was improved by switching from lactose-based media to soybean meal- and wheat bran-based media. Further improvement was made when the soybean meal medium was supplemented with sodium nitrate and magnesium sulfate. Res...