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· 1.2 -Considerações sobre os polieletrólitos estudados 3 1.2.1 -Ácido húmico (HA) 3 1.2.2 -Microalga Spirulina 10 1.2.3 -Ácido Algínico 12 1.2.4 -Ácido poliacrílico 13
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