HẤP PHỤ PHOTPHAT (PO43-) TRONG DUNG DỊCH NƯỚC SỬ DỤNG THAN SINH HỌC NGUỒN GỐC TỪ BÙN GIẤY

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Tác giả: Lê Phương Hoàng

Ngôn ngữ: vie

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Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2022

Mô tả vật lý: tr.29-35

Bộ sưu tập: Metadata

ID: 332190

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Mục đích của nghiên cứu là tạo ra chất hấp phụ từ bùn giấy để loại bỏ các chất ô nhiễm trong nước, điều này có ý nghĩa môi trường lớn trong việc sử dụng chất thải để xử lý chất thải. Bùn giấy thải từ công ty cổ phần giấy Hoàng Văn Thụ được thu hồi và rửa nhiều lần với nước máy và nước cất. Sau đó, bùn giấy được làm khô và nghiền đạt kích thước từ 0.25 – 0.5 mm. Bột bùn giấy thu được được các bon hoá ở 600 oC trong 4 giờ để tạo vật liệu than sinh học (BP). Thí nghiệm theo mẻ đã được thực hiện để đánh giá ảnh hưởng của một số yếu tố đến quá trình hấp phụ photphat (PO43-) của vật liệu BP. Kết quả cho thấy điều kiện thích hợp cho quá trình hấp phụ photphat ở pH dung dịch bằng 3, nồng độ photphat ban đầu 20 mg/L và dung lượng hấp phụ có thể đạt 3,04 mg/g với thời gian hấp phụ 120 phút. Than sinh học chế tạo từ bùn giấy đã thể hiện khả năng hấp phụ photphat trong dung dịch nước khả tốt và có thể trở thành chất hấp phụ đầy hứa hẹn để loại bỏ photphat trong nước thải.The aim of this study was to produce adsorbent from paper sludge for removal contaminants in water that has great environmental significant in utilization of waste to solve waste. Paper sludge in Hoang Van Thu paper joint stock company was collected and cleaned with tap water and distilled water. Then, it was dried and crushed to particle size of 0.25 – 0.5 mm. Finally, the paper sludge powder was carbonized at 600 oC for 4 hours to create the biochar (BP). Batch adsorption experiment was carried out to investigate and evaluate the effect of some factors on phosphate (PO43-) adsorption of BP material. The results expressed that the suitable conditions for phosphate adsorption of BP occurred at solution pH of 3, initial phosphate concentration of 20 mg/L and adsorption capacity can reach 3.04 mg/g at contact time 120 minutes. The paper sludge biochar shown pretty good adsorption capacity of phosphate in aqueous solution and can be become a promising adsorbent for removal of phosphate in wastewater.

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