COA of Formula: Al2H8O13S3. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Influence of the apparent molecular size of aquatic humic substances on color removal by coagulation and filtration. Author is Rigobello, Eliane Sloboda; Dantas, Angela Di Bernardo; Di Bernardo, Luiz; Vieira, Eny Maria.
This study aims to verify the influence of the apparent mol. size of aquatic humic substances (AHSs) on the effectiveness of coagulation with Al sulfate and ferric chloride. Coagulation-filtration tests using the jar test and bench-scale sand filters were carried out with H2O samples having a true color of ∼100 Hazen units and prepared with AHSs of different mol. sizes. Stability diagrams are presented showing regions of ≥ 90% and ≥ 95% apparent color removal delineated for each H2O sample using plots of total metal ion concentration (Al3+ and Fe3+) vs. coagulation pH. To achieve the same degree of color removal, the H2O samples with smaller apparent mol. sizes and a higher percentage of fulvic acids required higher dosages of both Al sulfate and ferric chloride.
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