Activation of persulphate by heat, pH, and transition metals for removal of COD and colour from biologically treated palm oil mill effluent

Hua, Tay Huat; Affam, Augustine Chioma; Chung, Wong Chee; Swee, Wong Chee; Adebayo, Johnson Olufemi

doi:10.1063/1.5117067

Cited by 3 publications

(1 citation statement)

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“…Maximum percentage of COD removal is observed with T3 (15mL AlCl3 and 3 mL alum) and amount of COD was slightly increased with T4 (20 mL AlCl3 and 4 mL alum) because coagulant reduces efficiency since reach at optimum condition. Excessive use of chemical dose resulted in surging the level of COD, since T4 showed dropping of percentage of COD removal (Hua et al, 2019). The study of Piotr Marcinowski et al, proclaimed that inorganic coagulants such as aluminum chloride and alum have been significantly suitable for decreasing the level of COD in wastewater (Marcinowski et al, 2019).…”

Section: Cod Reductionmentioning

confidence: 99%

Efficient removal of dyes in textile effluents using aluminum-based coagulant

International¹

2021

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The study was conducted to examine the effectiveness of aluminum-based coagulant on textile wastewater quality. Taking into account the environmental and economic factor, aluminum chloride was employed individually on wastewater as well as in combination with alum to remove the COD, turbidity and color. Four batches of 50 mL of wastewater were prepared then, 5 mL of AlCl3 and 1 mL alum was added in first batch named treatment T1. To optimize the treatment process for maximum reduction of COD, color and turbidity, dose of coagulants was increased by 5 mL of AlCl3 and 1 mL of alum per batch labeled with (T2, T3, T4) at original pH 9. Further study was conducted to evaluate the effect of pH on removal of color, turbidity and COD. Consequences of each treatment reveals that maximum reduction was obtained with neutral pH values as compared to pH 3, 9 and 11. Treatment T3 presented remarkable results, 98% reduction in both COD and color whereas, 99% in turbidity was observed at pH 7. Results demonstrated the effective application of aluminum-based coagulant to treat the textile wastewater.

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Section: Cod Reductionmentioning

confidence: 99%