Author(s): Dung. Tran Minh; Nhan. Pham Thi Thanh; Quang. Hoang Ha; Huyen. Pham Thanh
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Keywords: Oyster shells; PH; CaCO3; Neutralizing
Abstract: With CaCO 23 component made up to 95% (Davis T. A et al., 2000), oyster shells are similar in composition with limestone. The objective of this research is to present the capability of oyster shells in treating acidic wastewater from Thanh Thuy metal craft village. Based on jar test experiments to find the optimum conditions for the process including: dimension of shells, calcination time, calcination temperature, volume of shells and exposure time. The experimental results were demonstrated that: shells sized from 2 to 5 centimeters; calcinated in 6000C in 1 hour, brought up better efficiency to acidic wastewater treatment. According to above conditions, researcher found the optimum shells volume, exposure time to check the correctness of the experiments about increasing p H and reducing color, iron in wastewater. Oyster shells have implications in environmental protection, treatment cost saving and contributing the diversity of natural resources.
Year: 2014