Blended natural and synthetic coagulants for the COD and BOD removal from surface water; optimization by response surface methodology: The case of Gibe river.

Heliyon · 2024 · PMC11420472 · PMID 39318808

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a clear trendno p-value reported

9 can be summarized as follows; Impact of pH: the graph shows a clear trend – COD removal efficiency is low at a pH of 3 (likely acidic) and increases steadily as the pH gets higher, reaching maximum efficiency around a pH of 11 (likely basic).

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