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Tiềm năng sản xuất năng lượng từ chất thải rắn đô thị và mô hình thống kê: trường hợp của thị trấn Yirgalem, Ethiopia
Biomass Conversion and Biorefinery - Trang 1-14 - 2023
Tóm tắt
Một trong những vấn đề quan trọng mà các nước đang phát triển phải đối mặt là việc xử lý không đúng cách chất thải rắn phát sinh từ hoạt động của con người. Việc tìm kiếm các nguồn tài nguyên chất thải rắn làm nguồn năng lượng bền vững và giá cả phải chăng là rất quan trọng vì các nguồn năng lượng hiện có là hữu hạn và tốn kém. Nghiên cứu này nhằm đánh giá tiềm năng sản xuất năng lượng và xây dựng các mô hình năng lượng cụ thể theo địa điểm. Việc lấy mẫu được thực hiện trong các mùa khác nhau tại nhiều nguồn phát sinh chất thải khác nhau, bao gồm dân cư, thương mại, cơ quan, y tế và quét dọn đường phố. Hướng dẫn của Tiêu chuẩn Mỹ về Thử nghiệm và Vật liệu được sử dụng để lấy mẫu đại diện cho nghiên cứu các đặc tính vật lý và hóa học. Hàm lượng chất dễ bay hơi của chất thải rắn tổng hợp là 70,41%, tiếp theo là 16,24% carbon cố định và 13,35% tro theo cơ sở khô. Tương tự, một cuộc điều tra về phần hữu cơ hỗn hợp của chất thải rắn cho thấy nó chứa 32,46% carbon, 4,52% hydro, 46,03% oxy, 1,04% nitrogen và 0,17% lưu huỳnh. Các giá trị dự đoán của mô hình về giá trị nhiệt cao và thấp trong chất thải rắn tổng hợp lần lượt là 4731,96 kcal/kg và 4148 kcal/kg. Dựa trên lượng chất thải rắn khô là 4530,42 tấn mỗi năm, chất thải rắn đô thị (MSW) có tiềm năng năng lượng khoảng 21.798,98 MWh, tương đương 2,49 MW điện. Hàm lượng chất dễ bay hơi và carbon cố định theo cơ sở khô là cơ sở để phát triển một mô hình mới dự đoán hàm lượng năng lượng của chất thải rắn đô thị. Do đó, nghiên cứu này cũng sẽ đóng góp vào vệ sinh môi trường và dự báo lượng năng lượng trong dòng chất thải rắn đô thị.
Từ khóa
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