9) (5 points) How much can the pH change if 300 mg/L TCE (C2HCl3) is reduced completely to ethene with H2 as the electron donor? Assume a completely un-buffered system. 9) (5 points) How much ca...
12 g/L nitrate (NO^-_3) is contaminating an aquifer (groundwater). The starting pH of the water is 3.0. Nitrate is reduced to ammonium (NH^+_4) with acetate (CH_3COO^-) as the electron donor. How much acetate is required to reduce all nitrate? What concentration of protons will be generated that need to buffered from the system? How much zero valent iron (ZVI) would you need to completely reduce the nitrate in the same manner assuming it becomes ferrous iron in solution? Give all...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...
How can we assess whether a project is a success or a failure? This case presents two phases of a large business transformation project involving the implementation of an ERP system with the aim of creating an integrated company. The case illustrates some of the challenges associated with integration. It also presents the obstacles facing companies that undertake projects involving large information technology projects. Bombardier and Its Environment Joseph-Armand Bombardier was 15 years old when he built his first snowmobile...