Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Hệ thống hỗ trợ quyết định cho việc tái chế nhựa thải của cư dân tại Trung Quốc dựa trên phân tích dòng vật liệu và đánh giá vòng đời
Tóm tắt
Tái chế nhựa thải là một trong những phương pháp quan trọng để tiết kiệm nguồn tài nguyên dầu mỏ và giảm khí thải carbon. Tuy nhiên, tỷ lệ tái chế nhựa thải hiện nay vẫn còn thấp. Phân tích dòng vật liệu có thể giúp xác định dòng chảy của nhựa thải, và đánh giá vòng đời (LCA) có thể được sử dụng để định lượng tác động môi trường. Nghiên cứu hiện tại tích hợp hai phương pháp này vào việc xây dựng mô hình cho hệ thống hỗ trợ quyết định tái chế nhựa thải của cư dân. Việc xây dựng mô hình này được theo sau bởi phân tích độ nhạy của các thông số liên quan ảnh hưởng đến hiệu suất của hệ thống tái chế nhựa thải. Cuối cùng, nghiên cứu hiện tại dự đoán hiệu suất của hệ thống tái chế và tác động môi trường bằng cách thiết lập bốn kịch bản tối ưu hóa dựa trên phân tích độ nhạy. Kết quả cho thấy trong năm 2019, tổng cộng 8,39 triệu tấn ứng dụng cao cấp đã được thu hồi, khí thải carbon trong quá trình tái chế đạt 34,9 triệu tấn, và khí thải dioxin đạt 316,11 g TEQ, với tổng lượng khí thải giảm được là 24,47 triệu tấn CO2 so với sản xuất ban đầu. Phân tích độ nhạy cho thấy tỷ lệ lựa chọn tái chế nhựa thải, tỷ lệ phân loại lại của nhà máy tái chế nhựa thải và tỷ lệ thu hồi phân loại của chất thải hỗn hợp có ảnh hưởng tương đối lớn đến hiệu suất thu hồi và lợi ích môi trường của hệ thống tái chế. Trong kịch bản cải thiện toàn diện, đến năm 2035, khối lượng tái chế ứng dụng cao cấp sẽ tăng lên 33,96 triệu tấn, khí thải carbon sẽ tăng lên 64,73 triệu tấn, khí thải dioxin sẽ giảm xuống 165,98 g TEQ, và lượng giảm khí thải carbon sẽ tăng lên 99,06 triệu tấn. Nghiên cứu này có vai trò hướng dẫn nhất định cho các nhà hoạch định chính sách trong việc xây dựng tiêu chuẩn ngành và các chính sách liên quan đến tái chế nhựa thải.
Từ khóa
#Tái chế nhựa thải #Phân tích dòng vật liệu #Đánh giá vòng đời #Hệ thống hỗ trợ quyết định #Tác động môi trườngTài liệu tham khảo
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