NGHIÊN CỨU KHẢ NĂNG XỬ LÍ ION Pb(II) VÀ Cu(II) TRONG DUNG DỊCH BẰNG THAN SINH HỌC ĐIỀU CHẾ TỪ MÙN CƯA

Phạm Tăng Cát Lượng, Lưu Gia Hy, Trương Chí Hiền, Nguyễn Kim Diễm Mai

Tóm tắt


 

Bài báo này khảo sát các yếu tố tác động đến quá trình hấp phụ ion Pb(II) và Cu(II) trên vật liệu than sinh học điều chế từ mùn cưa. Các yếu tố khảo sát bao gồm: giá trị pH (2,0-6,0), nồng độ ion kim loại (5-200 mg‧L-1), thời gian hấp phụ (5-1440 phút), khối lượng than sinh học (0,05-0,10g). Kết quả cho thấy dung lượng hấp phụ cực đại đạt 62,11 mg‧g-1 đối với Pb(II) và 20,49 mg‧g-1 đối với Cu(II) ở pH = 4,0 và thời gian đạt cân bằng hấp phụ là 120 phút. Quá trình hấp phụ ion Pb(II) và Cu(II) trên than sinh học phù hợp hơn với quy luật động học bậc hai và mô hình đẳng nhiệt hấp phụ Langmuir. Nghiên cứu này cũng công bố kết quả xử lí ion Pb(II) và Cu(II) trong nước thải ở Phòng Thí nghiệm Hóa Vô cơ, Trường Đại học Sư phạm Thành phố Hồ Chí Minh.

 


Từ khóa


hấp phụ; than sinh học; Cu(II); Pb(II); mùn cưa; nước thải

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DOI: https://doi.org/10.54607/hcmue.js.18.12.3218(2021)

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