Tối ưu hóa thành phần môi trường tạo khí biogas sinh học từ chất thải rắn ao tôm ở Miền Nam Việt Nam bằng phương pháp đáp ứng bề mặt (RSM)

Abstract

     Biogas is the gas which produced by the process of decomposing organic substances under anaerobic conditions with the main component is methane. This study used response surface methodology based on central composite designed with 3 variables: shrimp solid waste, molasses and cow dung to determine the impact of these 3 factors on volume of biogas. Used the symmetric orthogonal design, therefore each element conducted at 3 levels (-1, 0,+1), the results gave an experimental matrix of 20 experiments, including 16 central experiments (2⁴ overall planning), 8 star points (2 experiments for each variable) and 3 replicate central experiments, with 1 objective function was the volume of biogas. The 20 treatments were arrange respectively in 20 dark bottles with 500 ml volume at anaerobic conditions and room temperature for 30 days. The study has determined the optimal content of these 3 factors for biogas volume. That were shrimp solid waste 96.7 grams: Molasses 42.7 grams: Cow dung 34.4 grams. The volume of gas obtained during fermentation with the above-mentioned optimum parameters was 1190.6 mL.

Keywords: Biogas, RSM, Shrimp Pond Waste, Solid Waste Treatment.