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Ảnh hưởng kết hợp của tri-n-butyl phosphate (TBP) hoặc tri-n-octyl phosphine oxide (TOPO) với didodecylphosphoric acid (HDDPA) trong quá trình chiết xuất ion uranium(VI) và thorium(IV)
Tóm tắt
Tầm quan trọng của việc loại bỏ các yếu tố phóng xạ ra khỏi nước thải đã là động lực cho công việc này. Việc chiết xuất dung môi hợp lực các ion U(VI) và Th(IV) từ dung dịch perchlorate bằng cách sử dụng axit didodecylphosphoric (HDDPA) kết hợp với tri-n-butyl phosphate (TBP) hoặc tri-n-octylphosphine oxide (TOPO) như một chất hỗ trợ đã được nghiên cứu lần đầu tiên. Các ảnh hưởng của nồng độ HDDPA, nồng độ chất hỗ trợ, giá trị pH và nhiệt độ đến quá trình chiết xuất đã được nghiên cứu. Các tham số nhiệt động lực học của quá trình chiết xuất đối với các ion này đã được tính toán. Kết quả cho thấy sự đóng góp hợp lực của TOPO cao hơn TBP trong việc chiết xuất Th(IV) và U(VI).
Từ khóa
#chiết xuất ion #uranium(VI) #thorium(IV) #didodecylphosphoric acid #tri-n-butyl phosphate #tri-n-octylphosphine oxide #nước thải phóng xạTài liệu tham khảo
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