- Thu hoi : 0 d Thoi gian nghien ciru: 7* thdng
Thdi gian bat dau: 10/2003 Thdi gian ket thuc: 06/2005
Ten cac can bp phdi hgp nghien cufu
TS, Pham vdn Tinh ThS. Nguyin Bdo Chdm
So dang kyde tai j Sd chirng nhan dang ky ket qua nghien ciiu: Ngay:
Bao mat:
TOM TAT KET QUA NGHIEN CLTU:
1. Axit Humic co kha nang phan ling manh vol cac ion kim loai Cu"\ Pb"\ Zn""^, Cd^^.Trong moi tnrcmg axit co pH tuf 1 - 6, neu pH cang cao thi kha nang phan ihig cang tot. Cd^^.Trong moi tnrcmg axit co pH tuf 1 - 6, neu pH cang cao thi kha nang phan ihig cang tot. Kha nang hap giu* kim loai nang boi axft humic phu thuoc manh vao pH. Phan ung dat hieu
qua tot chi trong khoang pH rat hep lix 4,4 den 5,5.
2. Ban canh yeu to pH thi thoi gian phan ung cung anh huong dang ke den kha nang ha'p giu" kim loai cLia axit humic. Vdi thcri gian tu 120 den 180 phut thi hau het cac phan ha'p giu" kim loai cLia axit humic. Vdi thcri gian tu 120 den 180 phut thi hau het cac phan ung giu'a kim loai va axft humic duong nhu dat den can biing. Kha nang hap giu cua axft humic Viet Nam co phan kem hon nhung khong dang ke so vol axft humic Wako { Nhat
Ban). Dieu nay co the la do su khac nhau vt nguon goc cua tung loai axit.Cac chat dien ly
ft anh huong den su hap phu cua axit humic voi kim loai nang.
3. Co the su diing cot chiia axit humic d\sgc tach tu than bun cua Viet Nam de tach loai
cac ion Pb'", Cu'", Zn"", Cd~" khoi nuoc thai co moi truong axit. Hieu suat tach 6 moi trucmg pH = 4,6 - 4,8 dat 98 - 99%. Bang phuong phap cho nudc 6 nhiem qua cot chua axit humic co the giam nong do cua Pb"", Cu"*, Zn"", Cd'" tu 20 mg/ 1 xuong con 0,004 mg/1.
Kien nghi ve quy mo va doi tuomg ap dung nghien curu
Day la ket qua ban dfiu mo ra kha nang su dung nguyen lieu siin co 6 trong nudc dc xir ly cac ngudn nudc thai 6 nhidm kim loai nang co moi tiucyng axit.