KHẢ NĂNG HẤP PHỤ CHẤT HỮU CƠ CỦA THAN HOẠT TÍNH BIẾN TÍNH ION KIM LOẠI

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Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2020

Mô tả vật lý: tr.88-95

Bộ sưu tập: Báo, Tạp chí

ID: 314326

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Nội dung của bài báo là đánh giá khả năng xử lý chất hữu cơ trong môi trường nước bằng chất hấp phụ than hoạt tính được biến tính bằng các ion kim loại. Bài báo sử dụng phương pháp hấp phụ và đánh giá ảnh hưởng các yếu tố: tỷ lệ % về khối lượng của hỗn hợp các ion kim loại và than hoạt tính (1-5%)
pH (4-10)
nồng độ chất hữu cơ đầu vào (250-1000mg/L), tốc độ bơm (10-30 mL/phút), chiều cao của cột hấp phụ (1030cm) đến khả năng hấp phụ của vật liệu. Các mô hình động học như Thomas, Yoon-Nelson và Bohart-Adam cũng được sử dụng trong quá trình đánh giá kết quả thực nghiệm. Kết quả nghiên cứu cho thấy khả năng xử lý chất hữu cơ đạt tối ưu tại tỷ lệ biến tính 3% và pH là 7. Hiệu suất sử dụng cột hấp phụ lớn nhất (79,71%) tại nồng độ chất hữu cơ ban đầu 500mg/L, tốc độ bơm là 10mL/phút, chiều cao lớp vật liệu hấp phụ 30cm. Kết quả cũng chứng minh rằng MAC có thể được sử dụng như là chất hấp phụ tiềm năng trong việc loại bỏ chất hữu cơ.The content of this paper is to evaluate organic matter removal from aqueous solution by using activated carbons contained iron metals (MAC). The absorption method was conducted. The effect of the ratio (0-5%, w/w) of iron metals and activated carbons, pH (4-10), initial organic matter concentrations (250-1000mg/L), flow rates (10-30mL/min), the height of the adsorbent column (10 -30cm) on the adsorption system were studied. Sorption of organic matter on the activated carbons could be described by kinetic models: Thomas, Yoon-Nelson and Bohart-Adam. The results showed that the optimum condition was at the ratio of 3% and pH of 7. The optimum adsorption process (79.71%) reached at the initial organic material concentration of 500mg/L, the flow rate of 10mL/min and MAC fixed-bed height of 30cm. The results also approved that MAC can be used as a potential absorbent to treat organic matter.

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