Effects of Slow-Mixing on the Coagulation Performance of Polyaluminum Chloride (PACI)

Zhang, Zhongguo; Liú, Dan; Hu, Dandan; Li, Duo; Ren, Xiaojing; Cheng, Yuanbing; Luan, Zhaokun

doi:10.1016/s1004-9541(13)60463-2

Cited by 32 publications

(19 citation statements)

References 26 publications

(28 reference statements)

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“…Dosages were given as the concentration of aluminum from PACl in milligrams per liter (mg·L −1 Al). All coagulation experiments were conducted with the same coagulation mixer (Model JTY, Daiyuan Company Ltd., Beijing, China) as that in our previous work [35]. The coagulation vessel was a 1 L cylindrical container with an inner diameter of 105 mm.…”

Section: Jar Testmentioning

confidence: 99%

Coagulation behavior of polyaluminum chloride: Effects of pH and coagulant dosage

Ning

Zhang

Liu

et al. 2015

Chinese Journal of Chemical Engineering

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Section: Jar Testmentioning

confidence: 99%

Coagulation behavior of polyaluminum chloride: Effects of pH and coagulant dosage

Ning

Zhang

Liu

et al. 2015

Chinese Journal of Chemical Engineering

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“…Two mixing regimes occur in coagulation process, namely rapid-mixing and slow-mixing (Zhang et al, 2013). Rapid-mixing is required to induce uniform distribution of coagulation into suspension (Yukselen and Gregory, 2004).…”

Section: Effect Of Slow-mixing Velocitymentioning

confidence: 99%

A comprehensive study on coagulant performance and floc characterization of natural Cassia obtusifolia seed gum in treatment of raw pulp and paper mill effluent

Subramonian

Chai

2014

Industrial Crops and Products

121

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“…Impact of slow mixing time to removal efficiency increased from 0 to 20 min and then reduced between 20 and 40 min. Results revealed that the floc was broken down in the long-term due to the force of mixing (Zhang et al, 2013;Jiang, 2015). Meanwhile, effect of pH wastewater values was not significant.…”

Section: Effect Of Independent Variables On Lignin Removal Efficiencymentioning

confidence: 91%

Optimization of Lignin Removal from Synthesized Wastewater by Iron (III) Trimesate

Pangkumhang¹,

Phanthasri²,

Suwannatrai³

et al. 2019

EnNRJ

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Box-Behnken design (BBD) was employed to study an optimal treatment method of synthetic lignin wastewater effluent from pulp and paper wastewater treatment plants using iron (III) trimesate (Fe-BTC) as an alternative coagulant aid. Fe-BTC was prepared by hydrothermal technique using ferric chloride hexahydrate (FeCl3·6H2O) combined with 1,3,5-benzenetricarboxylic acid (trimesic acid, H3BTC) in deionized water and ethanol. X-ray diffractometry and Fourier transform infrared spectroscopy were used to characterize the property of Fe-BTC. Three quadratic models of the four factors including Fe-BTC dosage, pH, initial lignin concentration, and slow mixing time were defined with lignin removal efficiency as a response. Treatment efficiency of lignin removal was 50-80% for experimental data and 60-80% for predicted values. Optimal condition was 1 g/L of Fe-BTC dosage, pH 4, and 50 ppm of initial lignin concentration without slow mixing giving 58.34% lignin removal efficiency. The pH of treated samples was below 3 after all processes. Results showed that Fe-BTC enhanced separation of lignin by coagulation-flocculation. Adsorption-charge neutralization is the main mechanism of this process at acidic pH. Fe-BTC separated the wastewater into three layers with Fe-BTC powder at the bottom, lignin sludge in the middle, and clear supernatant at the top. Lignin sludge can be reused and recycled for use in other applications.

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Effects of Slow-Mixing on the Coagulation Performance of Polyaluminum Chloride (PACI)

Cited by 32 publications

References 26 publications

Coagulation behavior of polyaluminum chloride: Effects of pH and coagulant dosage

Coagulation behavior of polyaluminum chloride: Effects of pH and coagulant dosage

A comprehensive study on coagulant performance and floc characterization of natural Cassia obtusifolia seed gum in treatment of raw pulp and paper mill effluent

Optimization of Lignin Removal from Synthesized Wastewater by Iron (III) Trimesate

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