Review Bubble column reactors Nigar Kantarcia‚ Fahir Borakb‚ Kutlu O. Ulgena‚* aDepartment of Chemical Engineering‚ Bog˘azic¸i University‚ 34342 Bebek-Istanbul‚ Turkey bDepartment of Chemical Engineering‚ Yeditepe University‚ 34755 Kadikoy-Istanbul‚ Turkey Received 31 August 2004; accepted 26 October 2004 Abstract Bubble columns are intensively used as multiphase contactors and reactors in chemical‚ biochemical and petrochemical industries. They provide several advantages during operation
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if you are a whale in the ocean. The Blue Whale is the largest animal on Earth. The Cuvier’s Beaked Whale is known to dive three kilometers below sea level for two hours‚ while the Sperm Whale is known to be able to dive two kilometers below sea level for two hours. The Bowhead Whale lives the longest‚ with a minimum of 200 years without disease or sickness‚ the Beluga Whale lives about 40-60 years‚ the Blue Whale lives about 70-90 years‚ the Fin Whale lives about 60-100‚ the Grey Whale lives about
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COMPARISON OF SBR AND CONTINUOUS FLOW ACTIVATED SLUDGE FOR NUTRIENT REMOVAL Alvin C. Firmin CDM Jefferson Mill‚ 670 North Commercial Street Suite 201 Manchester‚ New Hampshire 03101 ABSTRACT Sequencing batch reactors (SBR) are a flexible configuration of the activated sludge process‚ capable of providing low effluent nutrient levels. The SBR is fundamentally the same as any other variation of the activated sludge process‚ except that it operates in a batch draw and fill mode. The nuances of a
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Whales have been swimming in the Earth’s oceans for 20 million years; their haunting songs can travel underwater for thousands of miles‚ they are the largest animals to exist on Earth yet they survive on some of the smallest organisms. A whale’s heart can weigh up to 1‚300 pounds‚ and a baby whale can drink up to 130 gallons of its mother’s milk each day (Whale and Dolphin Conservation Society‚ 2010). Currently whale hunters claim that they are killing whales for scientific purposes; however‚ whale
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Saturable-Core Reactor (Saturable Reactor) I. Description A saturable reactor in electrical engineering is a special form of inductor where the magnetic core can be deliberately saturated by a direct electric current in a control winding. Once saturated‚ the inductance of the saturable reactor drops dramatically. This decreases inductive reactance and allows increased flow of the AC current. II. Function/Operation Figure 1. This scheme controls the output voltage by varying the impedance
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i know are born winners The definition of winning varies amongst people. For some people‚ being a winner is all about money and fashion. To me‚ being a winner is all about personal satisfaction and born with a family around you to support you. A winner is someone that is successful in life and that able to achieve his or her goals. Money doesn’t make someone a winner; happiness‚ love‚ and a successful life make someone a winner. My siblings and I consider ourselves as winners. We live a happy
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tubular flow reactor data‚ to demonstrate the temperature dependence of the reaction and also the rate constant and to observe the effect of different flow rates to the conversion. It is a homogenous reaction with only liquid phase is present. Also the reaction is endothermic. The saponification reaction is as follows; NaOH + EtOAc NaOAc + EtOH The reactants were taken as 1:1 ratios. 0.1 M NaOH and 0.1 M EtOAc was taken as reactants. The tank volume is 141 mL‚ the length of the reactor is 20 m and
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[pic] What service does VPN Reactor provides? - provides a secure way of connecting through a public network (such as the Internet) to a remote network/location. This remote network is typically a private network‚ such as a workplace or home network‚ or one provided by a commercial VPN service. No complicated software to install and works on all platforms. VPN’s features • Free easy-to-use App for Windows and Mac • Works on all platforms‚ Windows‚ Mac OSX‚ iPhone‚ etc.
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industry‚ especially in control rods of nuclear reactors. The prices of niobium are reasonable too‚ at a mere $75/lb‚ and are maintained by the largest producer to avoid market perception of a monopoly situation (Winter). Thus‚ niobium acts as a key element in nuclear fission reactors‚ due to its enormous strength‚ high melting point‚ resistance to corrosive chemicals‚ and low neutron absorption. Generally‚ niobium is incorporated into nuclear fission reactors due to its enormous strength and low density
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The Whale Rider By Witi Ihimaera Published May 2003 Kahu (Pai) is an eight year old Maori girl with a special gift. She can communicate with whales. She could be the leader her tribe needs‚ but her great-grandfather adheres strictly to Maori tradition which requires a male heir. He barely acknowledges her. The Whale Rider" tells the story of Kahu‚ a young girl in New Zealand struggling to find her place in her family and community. She craves the love of her great-grandfather‚ but he’s entirely
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