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Study of Physico-chemical and Microbiological Combined Treatment of Olive Oil Mill Wastewater PDFElharchli ELhassan, Ghomari Oumaima, Chokrafi Fatima-Zohra, Chraibi Marwa, Khalil FouadThe OMWW (olive oil mill wastewater) is the main liquid from olive oil mills. By its chemical composition, it has a very high polluting power. This products stemming from the triturating of olives very rich in organic matters (consisted phenolic, lipids) is often spread as is in the nature without controlled way, so exposing the aquatic ecosystems, has an inevitable pollution and degrades the quality of the circles. Our study is interested in the treatment of OMWW by combination of two physico-chemical and microbiological processes. The first treatment consists on a coagulation-flocculation revealing a decrease of the turbidity, a sludge production and an important discoloration of OMWW. The rate of phenolic compounds dejection after coagulation-flocculation using the ferric chloride and the aluminum sulfate are respectively 54 % and 64 %. The second microbiological treatment bringing in the capacities of A. Niger, C. albicans and C.tropicalis to reduce the rates of the phenolic compounds respectively of 100 %, 56 % and 78 % for diluted OMWW and also with 54 %, 27 % and 33 % for the raw OMWW. The decrease of the antibacterial activity of OMWW after the treatment by coagulation-flocculation is bound to a reduction of phenolic compounds by this process.

Synthesis and Characterization of Zinc Oxide Nano particles for the removal of Cr (VI) PDFNadia Moustafa Ahmed,N.S. YousefHexavalent Chromium has been considered to be toxic and hazardous due to its carcinogenic properties. Yet various methods used for removal of Cr(VI) from industrial wastewater include filtration, chemical precipita-tion, electrode position, membrane systems or even ion exchange process, and adsorption. Nanotechnology is the most effective in treating environmental wastes because of the reduced amount of material needed for re-moval, and it is considered to be environmentally friendly. Its application in the future is enhancing as it is less toxic and gives better performance. The present work was conducted for the synthesis of Nano size zinc oxide for the removal of hexavalent chromium Cr (VI). Batch experiments were performed to investigate the effects of Cr (VI) concentration, pH of solution, adsorbent dose, solution temperature, and contact time variations on the removal efficiency of Cr (VI). Zinc oxide nano material was synthesized by simple heating process using polyethylene glycol (PEG). FTIR analysis and TEM microscopy were applied for determination of particle size and characterization of produced nanoparticles. The results showed that the removal efficiency decreased with increasing Cr (VI) concentration, and increasing pH of solution and increased with increasing adsorbent dosage and increasing contact time. The optimum solution temperature that gave the maximum percentage removal of Cr (VI) was 60 oC.

GIS Based Multi Criteria Dicesion Analysis for Industrial Site Selection in Al-Nasiriyah City in Iraq PDFHadeal H. Alzamili, Mahmoud El-Mewafi, Ashraf M. Beshr, Ahmed AwadSite selection is one of the primary decisions in the start-up process and town planning, development or relocation of industries of all kinds. Building of a new industrial system is related with long term investment, and in this sense planning the site are a significant point on the road to progress or failure of the industrial system and that effect on all other services in the city. One of the main objectives in industrial site selection is finding the most suitable site with required conditions. A large number of researchers depend on GIS because the availability and its wide uses in site selection. GIS is a combination with other systems and methods such as the method for multi-criteria decision making (MCDM). Multi-criteria decision analysis (MCDA) techniques can be used below such conditions to classify and rank options for subsequent complete evaluation, or to specify acceptable from unacceptable potentiality for many sites. Analytical Hierarchy Process (AHP) can beneficially be used for assigning weights to various criteria in MCDA. The aim of the present study is to develop a methodology to use GIS and MCDA for a new industrial site in Al-Nasiriyah city. In this paper, we will try to find optimum solution for industrial estates site selection and applying solution in GIS

FINGERPRINT BASED ATTENDANCE MANAGEMENT SYSTEM PDFL.S. Ezema, C.K.A. Joe-Uzuegbu, J. N. Eneh and I. AmanzeIn many institutions and organizations, student and staff attendance is taken seriously as most management frown at absenteeism and sanction the individuals involved. Traditionally, the method of attendance taking used to be done manually using a physical register booklet. This method is prone to manipulation and impersonation. The attendance register could get damaged, stolen or lost. Therefore, several electronic techniques were developed to counter some notable flaws typical with the traditional method. These include clocking machine, RFID, biometrics, etc. While the clocking machine and RFID methods could not solve the problem of impersonation properly, some people fear the health effects of the use of biometrics like iris and facial scanner. Fingerprint scanning has been by far the more acceptable biometric system with the ability to eliminate all the trouble spots reported so far although computer support is always required. Therefore, this paper presents a fingerprint attendance system designed to also operate as a standalone and handheld system without the use of a computer, unlike other fingerprint attendance systems. 2b1af7f3a8