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  <controlfield tag="008">210402s9999    xx            000 0 und d</controlfield>
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   <subfield code="a">Lê, Thị Bạch</subfield>
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   <subfield code="a">Khảo sát khả năng hấp thụ và  trao đổi ion của than bùn</subfield>
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   <subfield code="a">Than bùn đuợc xem  là loại tài nguyên phân bố tự nhiên trên nhiều vùng của đất nước, nhưng quan trong hơn cả là mỏ than bùn ở đồng bằng sông Cửu Long.Bản thân than bùn có những đặc tính hấp thụ  và trao đổi ion nên than bùn đuợc coi la chất hấp thị tự nhiên. Tìm hiểu tác dụng và giá trị  xử lí ô nhiễm môi trường của than bùn và đề ra những giả pháp sử dụng than bùn một cách hợp lý trong việc bảo vệ môi trường. Đề tái gồm hai phần: Tổng quan tài liệu ( Sự hình thanh, điều kiện , đặc điểm...); Phần Thực nghiệm ( mẫu than bùn, xc định độ ẩm, phương pháp xác định...)</subfield>
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   <subfield code="a">Carbonaceous materials</subfield>
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   <subfield code="x">Peat</subfield>
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   <subfield code="i">Mai Loan, Qhieu</subfield>
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   <subfield code="a">Trung tâm Học liệu Trường Đại học Cần Thơ</subfield>
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