%*,ẩ2'&9ơơ272 ,+&ơ 11* +2ơ1*7+7+87+2 1*+,ầ1&8;/ộ7+8&1+8 0(7+@ 1.1.3 Xanh metylen [37] 1.1.4 Tác hҥ i cӫa ô nhiӉ m nѭӟc thҧ i dӋ t nhuӝm thuӕc nhuӝm 10 1.2 *,Ӟ,7+,ӊ89ӄ3+ѬѪ1*3+È3+Ҩ33+Ө .11 &iFNKiLQLӋP>@>@>@ 12 1.2.2 Hҩ p phөWURQJP{LWUѭ ӡQJQѭ ӟc 14 &iFP{KuQKFѫEҧQFӫDTXiW .15 1.3 QUÁ TRÌNH FENTON [4], [13] 20 x &ѫ FKӃ WҥR Yj WKjQK ÿӝQJ JӕF KӑF K\GUR[ FiF Fenton 21 1.3.2 Quá trình quang Fenton (Fenton/UV)[19], [27] 24 4XiWUuQK)HQWRQVӱGөQJKӋ -Oxalat/H2O2iQKViQJPһW [27][29][35][38] 25 &iF\ӃXWӕҧQKKѭӣQJÿӃQKӋ -Oxalat/H2O/ánh sáng PһWWUӡL>@>@>@ 27 1.3.5 ѬXÿLӇPFӫDSKѭѫQJSKiS)HQWRQ 28 1.3.6 ӬQJGөQJSKѭѫQJSKiS)HQWRQ 28 *,Ӟ,7+,ӊ89ӄ9Ұ7/,ӊ8+Ҩ33+Ө% 30 1.4.7әQJTXDQYӅ%DX[LWH 30 1.4.2 &{QJQJKӋ%D\HU .31 %QÿӓYjWiFKҥLFӫDEQÿӓ .31 7uQKKuQKWKҧLEQÿӓӣ9LӋW .32 0ӝWVӕSKѭѫQJSKiS[ӱOê EQÿӓ .33 0Ӝ76Ӕ+ѬӞ1*1*+,Ç1&Ӭ8Ӭ1*'Ө1* 35 1.6.1 ;ӱOê{QKLӉPNLPORҥLQһQJWURQJ 35 1.6.2 6ҧQ [XҩW xi PăQJ Wӯ bùn ÿӓ [43] 35 6ҧQ[XҩWJҥFKÿҩWVpWQXQJW 36 &+ѬѪ1*7+Ӵ&1*+,ӊ0 37 1*8)H & 2O4)3] ÈLOӵFFӫDFiFLRQNLPOR [XKѭӟQJWҥRWKjQKFiFFKҩWNӃWWӫD NLPORҥLQKѭ canxi, VҳW , natri, magiê kali1KӡYұ\NKLFyD oxalic GXQJ GӏFK VӁ WUiQK ÿѭӧF ҧQK KѭӣQJ [ NKӱ&2'FiFSKӭFFKҩWVӁO{LNpRFi OҳQJ [XӕQJ ÿi\ OjP JLҧP Fe(III)- R[DODW ÿӝ PjX KҩS JLҧ W siQJPҥQKӣEѭӟFVyQJ Ȝ= 550 nm, WҥRJӕF OH YӟLKLӋXVXҩWOѭ 27 FeIII(C2O4)33- + h Fe2+ + 2C2O42- + C2O4 C2O4 CO2 CO2 + FeIII(C2O4)33- + CO2 Fe2+ + CO2 + 3C2O42- 7ӯEDSKҧQӭQJWUrQFy WKӇWKXJӑQOҥLWKjQKPӝ 2FeIII(C2O4)33- + h Fe2+ + 5C2O42- + 2CO2 (1.24) 2+ 9jQKѭYұ\)H VӁÿѭӧFWҥRWKjQKYjSKҧQӭ 2O2 có dung GӏFKÿӇWҥRJӕF2+ EҵQJSKҧQӭQJ)HQWRQ Fe2+ + H2O2 + 3C2O42- FeIII(C2O4)33- + OH- + OH (1.25) &iF\ӃXWӕҧQKKѭӣQJÿӃQK -Oxalat/H2O/ánh ViQJPһWWUӡL> 12], [32 ][34] D̪QKK˱ͧQJFͯDÿ͡S+ 7URQJSKҧQӭQJ)HQWRQÿӝS+WӕLѭ - .KLS+WăQJFDRWUrQ KLӋXVXҩWSKҧQӭQJVөW FӫDVҳWWӯLRQVҳW,,WKjQKGҥQJNHR WiFSKkQKӫ\+ 22WKjQKR[\YjQѭӟFPjNK{QJ QKӓKѫQKLӋXVXҩWSKҧQӭQJFNJQJV b ̪QKK˱ͧQJFͯDG̩QJV̷W 2+ ĈӕLYӟLKҫXKӃWFiFӭQJGөQJPXӕ hay Fe3+ ÿӅXFyWKӇG WiFSKҧQӭQJ3KҧQӭQJEҳWÿҫX[~F 2O2 QKLӅX0X VҳW FORUXD KD\ VXQIDW ÿӅX Fy WKӇ ÿѭ KRjQVҳWVDX SKҧQӭQJEҵQJFiFKWăQJS+Wi KyDEQVҳW F̪QKK˱ͧQJFͯDLRQR[DODW ĈӕLYӟLKӋ)H ,,, ... WURQJQKӳQJWKXӕFQKXӝPÿѭӧFSKiWW ÿӗQJ WKӡL OӟS WKXӕF Oj QKXӝP TXDQ WUӑQJ QK WKjQKSKҫQE{QJWURQJYҧLVӧLSKD 1.1.3 Xanh methylen [37] D&̭XWU~F[DQKPHWKOHQ ;DQKPHWKOHQOjPӝWKӧSFKҩWWKѫ KѫQQăPF{QJWKӭFKyDKӑFOj&... R[DODWÿӃQKLӋXVXҩW Hình 3.32 ҦQKKѭӣQJFӫDQӗQJÿӝ H2O2 ÿӃQKLӋXVXҩWSKkQ 76 màu Hình 3.33 200ml xanh metylen 100ppm 77 Hình 3.34 ;DQKPHWOHQVDXNKL[ӱOêEҵQ 77 Fe(III)oxalat/H2O2iQKViQJPһWWUӡL... éQJKƭDNKRDKӑFYjWKӵFWLӉQF - 1JKLrQFӭXFiFTXiWUuQKKҩSSKө [ӱOêQѭӟFWKҧLÿҥWKLӋXVXҩWFDRQK - Nghiên cӭu TXi WUuQK FKLӃW D[LW R[DOLF VҳW EҵQJ Yj Vӱ trình Fenton KӋ Fe(III)-Oxalat/H2O2iQKViQJPһWWUӡL