Modelling the drinking Water Turbidity of Al-Sin Purification Plant using Dynamic Neural Networks

Modelling the relationship between drinking water turbidity and other indicators of water quality in Al-Sin drinking water purification plant using Dynamic Artificial neural networks could help in the implementation of the stabilization for the performance of the plant because these neural networks provide efficient tool to deal with the complex, dynamic and non-linear nature of purification processes. They have the ability to response to various instant changes in parameters influencing water purification. In this research, four models of feed-forward back-propagation dynamic neural network were designed to predict the effluent turbidity from Al-Sin drinking water purification plant. The models were built based on turbidity, pH and conductivity of raw water data while the effluent turbidity data were used for verify the performance accuracy of each network. The results of this research confirm the ability of dynamic neural networks in modeling and simulating the non-linearity behavior of water turbidity as well as to predict its values. They can be used in Al-Sin drinking water purification plant in order to achieve the stabilization of its performance.

Partial purification of hydroxycinnamic acid esterase and study of its activity in the synthesis of ferulic acid ethyl ester

A partial purification was performed for the fungal hydroxycinnamic acid esterase (HCAE) from Humicola sp. by precipitation using either ammonium sulfate or acetone.

Contribution to the purification of industrial water of mercury by pyrite

Green chemistry requires concepts and industrial ecology using natural systems to rid industrial water flow from heavy metals, which effects badly on health and environment. For this purpose, the changes in coefficient of distribution of mercury has been studied in system with two phases, liquid (water contaminated with mercury) - solid (metal pyrite) correlation of the following factors: Time of mixing phases, size of the developed steel, change the values of pH, concentration of elemental mercury, the concentration of calcium as a competitor to the occupation of sites available on the solid phase, the ratio V / M presents the water phase size on the mass of phase, which reflects the remaining time of water phase in the solid phase. The results show that pyrite can be proposed as safe environmental solution for purification of water phase of mercury, after controlling for some operation transactions.

Recycling of Filters Backwash Water (Example : Water Treatment Plant on Roum Dam by Asswayda )

Resulting backwash water from existing filters, in the water purification plants, is actually thrown in most cases in water bodies, valleys or discharged into other system without making any benefit from it. The amount of backwash water is well estimated to be in average (3-4%) of purified water amount. Even if this amount is generally not relevant, it can however be considered to be useful in some circumstances, where the source water is rare or there is no water resource in the region at all. Treatment of backwash water depends on the reuse need of it, either for drinking or irrigation purposes, so that the treated water must be in accordance with the water quality standard stated in related specifications. In this research, the resulting backwash water purification plant at Roum Dam near Swaida town has been scientifically analyzed and treated in a plant designed and built for this purpose. In this paper, the results of experiments are discussed; important facts have been concluded and economic feasibility for water reuse was determined.

Isolation and Purification of β-galactosidase From New Born Goat Brain

β-galactosidase enzyme was isolated from the new born goat brain by nine methods, It was found that the sodium acetate 0.2 Mole/Liter +0.2Mole/Liter NaCl PH5 method have given the highest specific activity of crude enzyme in comparison with the other methods. Also, this enzyme was purified by using four methods, the second one (cold acetone) was the butter. As a result the purification fold was about 135.46 times and the yield about 77.14% by using Sephacryl S200 (second step). This enzyme is 187.437 KDa as a molecular weight.

Extraction and Purification of Lipoxygenase From Peanut Seed Arachis hypogaea. L

The study included the selection of the best methods to extract the enzyme among nine methods. The protein content was concentrated and precipitated by cold acetone among other five methods of concentration (partial purification). The purification stages were achieved by using ion exchange column chromatography (DEAE – Sephadex A 50 column). Followed by gel filtration chromatography using sephacryl S-300. The active parts were lyophlizated (free drying) to obtain Lipoxygenase with 43.18% yield and 8.16 folds of purification and specific activity of 1162.9 unit / mg. The purity of enzyme was confirmed by poly acryl amide gel electrophoresis under non denaturing conditions, with the appearance a single band .

Decreasing of Phosphate Concentration in Aqueous Solutions by Using a New Adsorbent: Gatite, Comparison with Alumina and Hydrotalcite

This study illustrates, and compares the results of the removal of phosphate ions from aqueous solutions by using substances that have affinity to these ions, i.e., these ions have relatively a high adsorbing tendency toward these substances. Three different adsorbing substances were used, they are alumina, synthesized gatite, and hydrotalcite (abbreviation: HT). The results showed that chemical equilibrium was achieved quickly in the case of HT. Regarding the relative adsorbing ability of these three substances toward phosphate, and its removal from aqueous solutions, it was found that both synthesized gatite, and ignited HT at 500°C were both effective. The removal of phosphate ions was maximum at pH=5. Ionic strength showed a positive effect on the adsorption efficiency. The maximum adsorbing ability of these two adsorbing materials was about 150 mg PO3 -4-P per gram of the adsorbing HT; whereas the minimum efficiency was for aluminum oxide.

Microbiological Purification of Wastewater Using Butomus

Water samples were collected three times a week to make chemical, physical and microbiological tests, in order to determine the role of Macrophytes in improving and enhancing domestic wastewater purification processes, by the means of providing the necessary oxygen for microorganisms; absorbing some metal elements and chemical ions in addition to adsorbing a portion of microorganisms on its surfaces. This will lead to the completion of water purification and mineralization processes. Necessary tests for evaluating the purification processes had been carried on raw and treated water for a period of 17 days each experiment, using special tanks previously made for this purpose. The results obtained confirmed the effective role of microorganisms in domestic wastewater treatment and water purification using macrophytes which were capable of providing the suitable conditions to motivate heterotrophic microorganisms, which are characterized by the ability to decompose the organic matter and its active oxidation, which affects the concentrations of nitrates, ammonium, suspended solids and electrical conductivity... Etc. Tests results clearly confirm the positive effect of Macrophytes as Butomus umbellatus on enhancing purification processes and activating the organic matter mineralization by microorganisms.