Nghiên ứu loại bỏ á ation kim loại (cu2+,ni2+,pb2+,zn2+) trong dung dịh mạ hromium thải bằng phương pháp trao đổi ion nhằm thu hồi dung dịh mạ

QUY TRÌNH THỰC NGHIỆM II.1.. Thực nghiệm liên tục trên cột.

    c    2+, Cu2+, Zn2+, Ni 2+     Chromium  MỤC LỤC MỤC LỤC DANH MỤC BẢNG DANH MỤC HÌNH MỞ ĐẦU CHƢƠNG I TỔNG QUAN VỀ DÒNG THẢI MẠ ĐIỆN CHỨA CROM VÀ CÁC PHƢƠNG PHÁP XỬ LÝ     10  13  14 -  14  16  16  17  17  17  20  2+, Cu2+, Zn2+, Ni2+  22 CHƢƠNG II QUY TRÌNH THỰC NGHIỆM 24  24  24  24  25  26  26  26 1708094068689e7c3f434-d61b-4bc6-aea9-6270b81b6a86 17080940686897ddf4bc7-8ec1-4e56-8c83-98c5558d83b8 17080940686895355f13e-ea7d-46e4-ada6-b56e2a42d494     c    2+, Cu2+, Zn2+, Ni 2+     Chromium   27  28  28   28  29  29   30  30 ng vào 30  31 CHƢƠNG III KẾT QUẢ VÀ THẢO LUẬN 32  32  32  32  35   36  37  41  42  43  43 III.3.2sinh tái  45 KẾT LUẬN 46 TÀI LIỆU THAM KHẢO 48 PHỤ LỤC SỐ LIỆU 50 PHỤ LỤC ẢNH 61     c    2+, Cu2+, Zn2+, Ni 2+     Chromium  DANH MỤC BẢNG  10  11  12  25   26 B  2+, Zn2+, Cu 2+, Pb2+ , Fe3+ 50   2+, Zn2+, Cu 2+, Pb2+ , Fe3+ 50  33         2+ , Zn2+, Cu 2+, Pb2+ , Fe3+ 51         2+ , Zn2+ , Cu2+, Pb2+, Fe3+ 51     2+, Zn2+ , Cu2+ , Pb2+, Fe 3+ 52      52 2+  53 3+  53 2+  54  2+  54 2+ A 55 NA 39   (b) 40   2+, Zn2+, Cu2+ , Pb2+ , Fe3+  NA 55  2+ 56  2+, Zn 2+, Cu2+, Pb 2+, Fe3+  57     c    2+, Cu2+, Zn2+, Ni 2+     Chromium   57  2+, Zn 2+, Cu2+, Pb2+, Fe3+   58  2+  tái sinh, v = 100 mL/h 59 0 2+  60 IR124 NA , v = 200 mL/h 60     c    2+, Cu2+, Zn2+, Ni 2+     Chromium  DANH MỤC HÌNH Hình 1.1 Quy trình cơng   15 Hình 2.1 S  27 2+ 2+     i Ni , Zn , Cu2+ , Pb2+ , Fe3+  32      2+, Zn2+ , 2+ 2+ 3+ Cu , Pb , Fe  33  2+, Zn 2+ , Cu2+, Pb2+ , Fe 3+  35 Hình 3.4 2+ , Zn2+, Cu2+, Pb2+, Fe 3+  36  37 Hình 3.6 Langmuir  38 Hình 3.7 00CT NA (b) 40 Hình 3.8  41 Hình 3.9 3+ , Pb2+, Cu2+ , Pb2+, Zn2+ ) 42  2+, Zn2+, Cu2+ , Pb2+ , Fe3+   43 Hình 3.112+  45     c    2+, Cu2+, Zn2+, Ni 2+     Chromium  MỞ ĐẦU                 nnày                            thu         cation                    (Fe3+ , Cu2+, Ni2+, Pb 2+, Zn2+ )          tài ngun  sau: - Tng quan v dịng thi m n ch lý - Thc nghim loi b tp cht cation kim loi dung dch m Crom th (Fe3+ , Cu2+, Ni2+, Pb2+ , Zn2+) ca 01 công ty sn sut ph tùng ôtô xe máy thuc Khu công nghip Ph n i ion - Kt qu tho lun     c    2+, Cu2+, Zn2+, Ni 2+     Chromium  CHƢƠNG I TỔNG QUAN VỀ DÒNG THẢI MẠ ĐIỆN CHỨA CROM VÀ CÁC PHƢƠNG PHÁP XỬ LÝ I.1 Đặc tính chung nƣớc thải cơng nghiệp mạ điện Các  bày hình 1.1        Làm học Dung môi       NaOH, HCl, H2SO4     axit   ZnCl2 NaOH H2SO4 CuSO4 Axit, NiSO4 ZnO H3BO3 NaCN Cu(CN)  Au m  crôm     Cr 6+ Ni 2+, axit Zn2+, axit     Cu 2+, axit, CN - CN-, axit Hình 1.1 Quy trình  [7]     c    2+, Cu2+, Zn2+, Ni 2+     Chromium  hành cá: : g   2SO4, HNO3 Cô  :                    nh : g  :         I.1.1 Đặc điểm trình mạ Crom   2CrO4  [6]    oxy hóa 6+ (CrO3+ (trong Cr2 O3 2+  2CrO3 + 6H+  2O3 + 3H2O     c    2+, Cu2+, Zn2+, Ni 2+     Chromium  2Cr2O3 + 4H+ 2O CrO + 2H+ + 2 + H 2O 2H+ + 2 2 T  4  Cr(OH)CrO + H + CrO4 + H2O CrCrO4 + 2 + CrO 426+   I.1.2 Thành phần dung dịch mạ Crom Anhidrit cromic:    3   400g/l         2CrO4           cromic [6] CrO + H 2O  H2 CrO4 2H2 CrO4  2Cr 2O7 + H2O Axit sulfuric H 2SO kali flosilicat K2 SiF6: 2-, F-, SiF62- 2SO4  3 % < [H 2SO 4] : [CrO 3] < 1,2%                      1,2m [6]    3+ ):     Cr3+ - 2O3 2O3 -  bó  2O3         2 O3  3+   6]     c    2+, Cu2+, Zn2+, Ni 2+     Chromium    CrO 3, g/l H 2SO 4, g/l  oC  150  175 1,5  1,75 55  65  220  250 2,2  2,5 45  55  275  300 2,75  3,0 35  45 Fe3+ , Cu 2+, Zn 2+              I.1.3 Nƣớc thải công nghiệp mạ điện                    d       Cu2+, Pb 2+, Zn2+ , Cr6+, Ni 2+, CN-) t           10