Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Tập hợp phân tử do Alkoxy-silyl kích thích: Một cách tiếp cận mới để loại bỏ vi nhựa bền vững khỏi hệ thống nước
Tóm tắt
Lớp chất của các tác nhân hóa học hữu cơ trơ (IOCS) mô tả các phân tử hóa học hữu cơ (macro-) có độ bền cao khi xâm nhập vào hệ sinh thái, và quá trình phân hủy của chúng bị hạn chế. Những macromolecule hóa học hữu cơ tổng hợp này, thường có nguồn gốc từ quá trình polyme hóa nhiều monomer khác nhau, dưới hình thức nhựa, là không thể thiếu trong cuộc sống hàng ngày. Chúng xâm nhập vào các thành phần môi trường và gây thiệt hại lớn do sự xâm nhập ban đầu (ngành công nghiệp, mỹ phẩm, giặt giũ vải), và thứ cấp (phân hủy). Nếu những hạt này vào hệ thống nước, điều này có những hậu quả nghiêm trọng đối với hệ sinh thái như cái chết của động vật biển, hoặc tích tụ sinh học. Các nhà máy xử lý nước thải đang gặp phải giới hạn của chúng và cần những ý tưởng đổi mới cho việc loại bỏ vi nhựa một cách bền vững. Bài viết này xem xét một phương pháp mới để loại bỏ polymer khỏi các hệ thống nước (quy mô phòng thí nghiệm) bằng cách sử dụng các phản ứng kết tụ do sol-gel kích thích để tạo thành các khối hạt lớn hơn. Các khối hạt mở rộng này có thể được tách ra dễ dàng hơn nhiều khỏi nước thải, vì chúng nổi trên bề mặt nước. Các hệ thống tách biệt, ví dụ như bẫy cát, có thể dễ dàng được sử dụng. Một lợi điểm nữa là quá trình kết tụ có thể được thực hiện hoàn toàn độc lập với loại, kích cỡ và lượng nồng độ chất lạ cũng như các tác động bên ngoài (giá trị pH, nhiệt độ, áp suất). Do đó, loại tách biệt hạt mới này không chỉ có thể được sử dụng trong các nhà máy xử lý nước thải, mà còn có thể được chuyển giao cho các hệ thống phân tán (ví dụ như thực hiện trong các quy trình công nghiệp).
Từ khóa
#vi nhựa; tác nhân hóa học trơ hữu cơ; hệ sinh thái; xử lý nước thải; kết tụ; phân tách hạt; quy trình công nghiệpTài liệu tham khảo
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