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result sql = Removal of sulfamethoxazole by Fe(III)-activated peracetic acid combined with ascorbic acid.
Removal of sulfamethoxazole by Fe(III)-activated peracetic acid combined with ascorbic acid.
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char = d;code = 100
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = D;code = 68
char = u;code = 117
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = r;code = 114
char = a;code = 97
char = d;code = 100
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = s;code = 115
char = ';code = 39
char = ;code = 32
char = q;code = 113
char = u;code = 117
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = h;code = 104
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = e;code = 101
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = ,;code = 44
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = c;code = 99
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = ;code = 32
char = A;code = 65
char = A;code = 65
char = ;code = 32
char = h;code = 104
char = i;code = 105
char = n;code = 110
char = d;code = 100
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = S;code = 83
char = M;code = 77
char = X;code = 88
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = i;code = 105
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = A;code = 65
char = A;code = 65
char = /;code = 47
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = I;code = 73
char = );code = 41
char = /;code = 47
char = P;code = 80
char = A;code = 65
char = A;code = 65
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = c;code = 99
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = x;code = 120
char = m;code = 109
char = l;code = 108
char = n;code = 110
char = s;code = 115
char = :;code = 58
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = =;code = 61
char = ";code = 34
char = h;code = 104
char = t;code = 116
char = t;code = 116
char = p;code = 112
char = :;code = 58
char = /;code = 47
char = /;code = 47
char = w;code = 119
char = w;code = 119
char = w;code = 119
char = .;code = 46
char = w;code = 119
char = 3;code = 51
char = .;code = 46
char = o;code = 111
char = r;code = 114
char = g;code = 103
char = /;code = 47
char = 1;code = 49
char = 9;code = 57
char = 9;code = 57
char = 8;code = 56
char = /;code = 47
char = M;code = 77
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = /;code = 47
char = M;code = 77
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = M;code = 77
char = L;code = 76
char = ";code = 34
char = >;code = 62
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = s;code = 115
char = u;code = 117
char = b;code = 98
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = >;code = 62
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = r;code = 114
char = o;code = 111
char = w;code = 119
char = >;code = 62
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = i;code = 105
char = >;code = 62
char = H;code = 72
char = C;code = 67
char = O;code = 79
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = i;code = 105
char = >;code = 62
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = r;code = 114
char = o;code = 111
char = w;code = 119
char = >;code = 62
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = n;code = 110
char = >;code = 62
char = 3;code = 51
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = n;code = 110
char = >;code = 62
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = o;code = 111
char = >;code = 62
char = -;code = 45
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = o;code = 111
char = >;code = 62
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = s;code = 115
char = u;code = 117
char = b;code = 98
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = >;code = 62
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = >;code = 62
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = C;code = 67
char = l;code = 108
char = <;code = 60
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = >;code = 62
char = -;code = 45
char = <;code = 60
char = /;code = 47
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = >;code = 62
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = h;code = 104
char = i;code = 105
char = b;code = 98
char = i;code = 105
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = S;code = 83
char = M;code = 77
char = X;code = 88
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = m;code = 109
char = o;code = 111
char = v;code = 118
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = y;code = 121
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = m;code = 109
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = x;code = 120
char = m;code = 109
char = l;code = 108
char = n;code = 110
char = s;code = 115
char = :;code = 58
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = =;code = 61
char = ";code = 34
char = h;code = 104
char = t;code = 116
char = t;code = 116
char = p;code = 112
char = :;code = 58
char = /;code = 47
char = /;code = 47
char = w;code = 119
char = w;code = 119
char = w;code = 119
char = .;code = 46
char = w;code = 119
char = 3;code = 51
char = .;code = 46
char = o;code = 111
char = r;code = 114
char = g;code = 103
char = /;code = 47
char = 1;code = 49
char = 9;code = 57
char = 9;code = 57
char = 8;code = 56
char = /;code = 47
char = M;code = 77
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = /;code = 47
char = M;code = 77
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = M;code = 77
char = L;code = 76
char = ";code = 34
char = >;code = 62
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = s;code = 115
char = u;code = 117
char = b;code = 98
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = >;code = 62
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = r;code = 114
char = o;code = 111
char = w;code = 119
char = >;code = 62
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = i;code = 105
char = >;code = 62
char = N;code = 78
char = O;code = 79
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = i;code = 105
char = >;code = 62
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = r;code = 114
char = o;code = 111
char = w;code = 119
char = >;code = 62
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = n;code = 110
char = >;code = 62
char = 3;code = 51
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = n;code = 110
char = >;code = 62
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = o;code = 111
char = >;code = 62
char = -;code = 45
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = o;code = 111
char = >;code = 62
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = s;code = 115
char = u;code = 117
char = b;code = 98
char = s;code = 115
char = u;code = 117
char = p;code = 112
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char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = >;code = 62
char = ,;code = 44
char = ;code = 32
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = x;code = 120
char = m;code = 109
char = l;code = 108
char = n;code = 110
char = s;code = 115
char = :;code = 58
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = =;code = 61
char = ";code = 34
char = h;code = 104
char = t;code = 116
char = t;code = 116
char = p;code = 112
char = :;code = 58
char = /;code = 47
char = /;code = 47
char = w;code = 119
char = w;code = 119
char = w;code = 119
char = .;code = 46
char = w;code = 119
char = 3;code = 51
char = .;code = 46
char = o;code = 111
char = r;code = 114
char = g;code = 103
char = /;code = 47
char = 1;code = 49
char = 9;code = 57
char = 9;code = 57
char = 8;code = 56
char = /;code = 47
char = M;code = 77
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = /;code = 47
char = M;code = 77
char = a;code = 97
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char = h;code = 104
char = M;code = 77
char = L;code = 76
char = ";code = 34
char = >;code = 62
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = s;code = 115
char = u;code = 117
char = b;code = 98
char = s;code = 115
char = u;code = 117
char = p;code = 112
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char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = r;code = 114
char = o;code = 111
char = w;code = 119
char = >;code = 62
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = i;code = 105
char = >;code = 62
char = S;code = 83
char = O;code = 79
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = i;code = 105
char = >;code = 62
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = r;code = 114
char = o;code = 111
char = w;code = 119
char = >;code = 62
char = <;code = 60
char = m;code = 109
char = m;code = 109
char = l;code = 108
char = :;code = 58
char = m;code = 109
char = n;code = 110
char = >;code = 62
char = 4;code = 52
char = <;code = 60
char = /;code = 47
char = m;code = 109
char = m;code = 109
char = l;code = 108
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char = <;code = 60
char = m;code = 109
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char = r;code = 114
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char = w;code = 119
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char = l;code = 108
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char = m;code = 109
char = m;code = 109
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char = o;code = 111
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char = -;code = 45
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char = m;code = 109
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char = o;code = 111
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char = s;code = 115
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char = b;code = 98
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char = m;code = 109
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char = m;code = 109
char = a;code = 97
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char = h;code = 104
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char = d;code = 100
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char = a;code = 97
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char = u;code = 117
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char = a;code = 97
char = l;code = 108
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char = r;code = 114
char = g;code = 103
char = a;code = 97
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char = i;code = 105
char = c;code = 99
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char = t;code = 116
char = e;code = 101
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char = a;code = 97
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char = m;code = 109
char = p;code = 112
char = a;code = 97
char = c;code = 99
char = t;code = 116
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char = o;code = 111
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char = ;code = 32
char = S;code = 83
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char = X;code = 88
char = ;code = 32
char = d;code = 100
char = e;code = 101
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char = r;code = 114
char = a;code = 97
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char = t;code = 116
char = i;code = 105
char = o;code = 111
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char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
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char = t;code = 116
char = r;code = 114
char = a;code = 97
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char = f;code = 102
char = o;code = 111
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char = m;code = 109
char = a;code = 97
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char = i;code = 105
char = o;code = 111
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char = p;code = 112
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = w;code = 119
char = a;code = 97
char = y;code = 121
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = S;code = 83
char = M;code = 77
char = X;code = 88
char = ;code = 32
char = i;code = 105
char = n;code = 110
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char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = A;code = 65
char = A;code = 65
char = /;code = 47
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = I;code = 73
char = );code = 41
char = /;code = 47
char = P;code = 80
char = A;code = 65
char = A;code = 65
char = ;code = 32
char = s;code = 115
char = y;code = 121
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = m;code = 109
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = c;code = 99
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char = u;code = 117
char = d;code = 100
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = h;code = 104
char = y;code = 121
char = d;code = 100
char = r;code = 114
char = o;code = 111
char = x;code = 120
char = y;code = 121
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char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
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char = ,;code = 44
char = ;code = 32
char = b;code = 98
char = o;code = 111
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char = d;code = 100
char = ;code = 32
char = c;code = 99
char = l;code = 108
char = e;code = 101
char = a;code = 97
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result sql = Ascorbic acid (AA) was used as a reducing agent to improve the Fe(III)-activated peracetic acid (PAA) system for the removal of sulfamethoxazole (SMX) in this work. The efficiency, influencing factors and mechanism of SMX elimination in the AA/Fe(III)/PAA process were studied. The results exhibited that AA facilitated the reduction of Fe(III) to Fe(II) and subsequently improved the activation of PAA and H2O2. Various radicals, including organic radicals (e.g. CH3C(O)O• and CH3C(O)OO•) and hydroxyl radical (HO•), were rapidly formed from the activated PAA and H2O2, resulting in SMX removal. Increasing dosages of PAA and Fe(III) contributed to enhanced SMX degradation, while excessive PAA and Fe(III) did not further promote SMX degradation. Due to the radicals' quenching effect, excess AA hindered SMX elimination in the AA/Fe(III)/PAA process. The presence of HCO3- and Cl- inhibited SMX removal in this system, whereas NO3-, SO42- and natural organic matter had little impact on SMX degradation. The transformation pathways of SMX in the AA/Fe(III)/PAA system included hydroxylation, bond cleavage and amino oxidation. This research provides a strategy to enhance the Fe(III)-activated PAA system for the elimination of refractory organic pollutants.


Publication: Environ Technol 2024 Dec:1-11.
Publication Date: Dec 2024
Study Author(s): Liu Yiqing Y ; Xu Linghan L ; Li Xin X ; Wang Shixiang S ;
Institution: School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, People's Republic of China.
Shortcut link to this study:
Ascorbic acid (AA) was used as a reducing agent to improve the Fe(III)-activated peracetic acid (PAA) system for the removal of sulfamethoxazole (SMX) in this work. The efficiency, influencing factors and mechanism of SMX elimination in the AA/Fe(III)/PAA process were studied. The results exhibited that AA facilitated the reduction of Fe(III) to Fe(II) and subsequently improved the activation of PAA and H2O2. Various radicals, including organic radicals (e.g. CH3C(O)O• and CH3C(O)OO•) and hydroxyl radical (HO•), were rapidly formed from the activated PAA and H2O2, resulting in SMX removal. Increasing dosages of PAA and Fe(III) contributed to enhanced SMX degradation, while excessive PAA and Fe(III) did not further promote SMX degradation. Due to the radicals' quenching effect, excess AA hindered SMX elimination in the AA/Fe(III)/PAA process. The presence of HCO3- and Cl- inhibited SMX removal in this system, whereas NO3-, SO42- and natural organic matter had little impact on SMX degradation. The transformation pathways of SMX in the AA/Fe(III)/PAA system included hydroxylation, bond cleavage and amino oxidation. This research provides a strategy to enhance the Fe(III)-activated PAA system for the elimination of refractory organic pollutants.

PMID: 39737894

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