In this study, we review the possibility of production both ethanol and methanol from
OMW(OMW: Olive Mill Wastewater), fermented using pathogenic bacteria and isolated
marine bacteria. The results showed that when using Salmonella sp. bacteria, the
highest
values of methanol (5658.308 μg /l) appear at 7.5% concentration of the OMW, and the
higher concentration of ethanol (49.132 μg/l) at a concentration of 17.5% fermentation of
OMW. While Pseudomonas sp. produced the highest concentration of methanol (603.76μ
g/l) and ethanol (688.71μg /l) at 17.5% for OMW.
The results of this research showedthe ability of the bacteria isolated from sea water
in producing the above mentioned alcohols; for example the X3 bacteria displayed a direct
correlation between high concentrations of OMW (15 , 35 , 50)% and the high
concentrations of produced methanol (UL, 130.406μg/l, 1353.244μg/l ), apposite to
ethanol which was under the detection limits (under limited: UL).
This research study the effect of the proportion of the media (water - alcohol ) to determine where the arsenic used alcohol ( methanol _ ethanol _ propanol ) Using a Potentiometric method. It conducted the calibration process for the specific size o
f the solution studied a specific size of the standard solution of iodine Using a Potentiometric method , after the application of analytical conditions and technical optimal to determine arsenic , and then we studied the effect of mixing ratio on the detection limit for arsenic in mixed media (water _ Alcohol ) .
The study showed that the value of the detection limit of arsenic vary with the type of alcohol used and accounted for in the reaction medium , it reached to (1× 10-7 M) in media (75:25 water _ methanol ) , but when you use a media ( 75:25 water _ ethanol ) arrived to the limit of detection (1×10-4 M ), As for propanol arrived to the limit of detection (1×10-3 M).
where the value reached detection limit of arsenic to (1× 10-5 M) in media ( 50:50 water _ methanol ) , but when you use a media ( 50:50 water _ ethanol ) arrived to the limit of detection (1×10-3 M ), As for propanol arrived to the limit of detection (1×10-2 M).
The study showed that the use of the ratio ( 75:25 water _ alcohol ) gave a higher value limit of detection and therefore better results .
Was calculated as the standard deviation and standard deviation percentile confidence limit in addition to the feedback that indicates the efficiency of the method of determining the concentration of arsenic detection limit for each medium.
Thick Films have been prepared by the chemical painting method from Tungsten Oxide nanopowdersas the source compound, which are prepared by milling in a high energy ball mill for variousspans of time (1-18h) on cleanedglasssubstratesunder limited the
rmal conditions. The temperature of the films have been changed from 25°C to 350°C. The films have been investigated for their sensing properties relating to 100 ppm ethanol vapor adsorption, using the (I–V) characteristics.The activation energy Ea for deposition films is deduced from the Arrhenius equation. The effect of the grain size and the thermal conditions on the sensing properties of the WO3thick films to ethanol vapor adsorption, as well as the correlations between The electrical conductivity of the WO3 thick films and the grain size of the material films are reported.The response time for films which have particle size about 70.54nm is defined at 300°C.
Inhibition activity of extracts (acetone, ethanol, water) parts of the (Myrtus
communis L.) (root, stem, leaves, fruits) with concentrations (25,50,75,100%)
was carried out against growth of Gr- and Gr+ bacteria which were isolated and
identified
from the pathogenic specimens of The University Children's Hospital
bacterial laboratory in Damascus, using agar well diffusion method on Mueller
– Hinton medium.
This research aims to study the effect of certain analytical
conditions to determine the arsenic in in mixed media (water _
alcohol ) where the user either alcohol ( methanol, ethanol ,
propanol using a Potentiometric, and then selected as conditi
ons
optimal certified for this determine. The effect of each of the (PH
value, type, concentration electrolyte, effect of crippling
electrolytes) to determine the arsenic in mixed media ( 50:50 water
_ alcohol ) and calibration using a standard solution of iodine.In
addition to that, there are technical conditions must be tuned to
determine the actual value of the end point calibration and data
processing of standard solution (initial velocity and deceleration
near the end point calibration). The study showed that the PH value
appropriate for calibration of arsenic with iodine (pH=8), also
found that the response process of arsenic on the electrode platinum
has been excellent when using NaHCO3 as electrolyte with
concentration of 1 M, which has been successfully used to quantify
arsenic As+3, where the value reached detection limit of arsenic to
(1×10-5M) in media (50:50water _ methanol ) , but when you use a
media ( 50:50 water _ ethanol ) arrived to the limit of detection
(1×10-3 M ), As for propanol arrived to the limit of detection (1×10-2 M). Was calculated as the standard deviation and standard
deviation percentile confidence limit in addition to the feedback
that indicates the efficiency of the method of determining the
concentration of arsenic and detection limit for each medium.
This study was conducted at the laboratories of the Faculty of Agriculture,
Damascus University and the National Commission of Biotechnology in 2012 to
investigate he possibility of Production of bioethanol using local isolate of
Saccharomyces cer
evisiae from raw sugar refining molasses and to determine
the effect of different temperatures, pH and concentration of Dry matter (Brix
degree) in molasses on the amount of ethanol produced. A local isolate (R1) of
Saccharomyces cerevisiae selected previously due to its superiority in ethanol
production was taken from wine brewing residues and exposed to different
temperatures (20, 25, 30 and 35OC), pH (4, 4.5, 5 and 5.5) and the Brix degrees
(16, 20, 24 and 28%) during fermentation.
Results revealed that the best amount of ethanol was produced at
temperature of 30 º C, pH 5, and Brix degree in molasses 16%.
A hydroponic culture experiment was conducted under the green house
conditions, at the general commission of scientific agricultural research, and
the faculty of agriculture, Damascus university, during the year 2002-003.
The objectives of this in
vestigation concentrated on the influence of four
salinity levels (0-50-100-150 mM NaCl) on some physiological parameters of
eight sorghum genotypes. The experiment was designed in a RCB design with
three replications.
