Nghiên cứu tổng hợp vật liệu trao đổi ion từ nhựa thải bằng phản ứng sulfo hóa dạng đồng thể, ứng dụng loại bỏ Cr3+ trong môi trường nước

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Vander Bruggen Bart, Quốc Hưng Nguyễn, Thị Thúy Phạm

Ngôn ngữ: vie

Ký hiệu phân loại: 612.3924 Digestion

Thông tin xuất bản: Khoa học công nghệ Việt Nam, 2018

Mô tả vật lý: 46-49

Bộ sưu tập: Metadata

ID: 536672

Thêm vào giỏ

Polystvrene thải từ cốc, đĩa nhựa dùng một lần được hòa tan trong dung môi cyclohecxane (C6H12) và biến tính bởi axit sulfuric (H2SO4 ) nồng độ 98% để tạo ra vật liệu trao đổi cation ứng dụng cho mục tiêu loại bỏ Cr3+ trong nước. Phổ hồng ngoại FTIR cho thấy có xuất hiện nhóm sulfonic ở vật liệu sau biến tính. Kết quả nghiên cứu cũng chỉ ra tổng dung lượng trao đổi ion của vật liệu phụ thuộc vào các điều kiện của phương pháp hiến tính (nhiệt độ, thời gian biển tính.. ..) Tống dung lượng trao đổi ion của vật liệu được điều chế trong điều kiện tối ưu theo phương pháp này là 40, 85 mg/g đối với crôm. Vật liệu nhựa thải polystyrene biến tính đã được chứng minh có các tính chất của nhựa trao đổi ion, cũng như có tiềm năng để loại bỏ Cr3+ trong nước.Polystyrene waste from disposable cups and plates was dissolved in cyclohexane and denatured by sulfuric acid to synthesise cation exchange materials which were applied to remove Cr3+ in water. In this study, cyclohexane was used at 60oC to prevent phase separation. The spectrum of the modified materials was calculated by the FTIR technique, and the existence of the additional sulfonic groups in the structure of plastic waste after sulfonation was proved. The results showed that total ion exchange capacity of the modified material was affected by the experimental conditions (temperature, modification time, etc). Total ion exchange capacity of materials synthesised by this method in the optimal conditions was 40.85 mg/g for chromium. Polystyrene waste after modification process had characteristics of ion exchange materials and showed the potential to remove Cr3+ in water.

1. Đọc trực tuyến

1. Đọc trực tuyến

Tạo bộ sưu tập với mã QR