Multi-response optimization for color removal from cardboard wastewater using polyaluminum chloride and cationic polyacrylamide

Harif, S.; Aboulhassan, M. A.; Bammou, L.

doi:10.1007/s13762-022-04267-9

Cited by 8 publications

(2 citation statements)

References 39 publications

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“…Furthermore, the increases in PAC dosage had a greater removal effect on COD and chromaticity than TN, NH 4 + -N, and TP. These results were confirmed by the study conducted by Harif et al (2023) .…”

Section: Resultssupporting

confidence: 81%

Enhancing algal growth and nutrient recovery from anaerobic digestion piggery effluent by an integrated pretreatment strategy of ammonia stripping and flocculation

Qian

Song

et al. 2023

Front. Bioeng. Biotechnol.

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Anaerobic digestion piggery effluent (ADPE) with a quite high ammonium (NH4+) concentration and turbidity (dark brown color) generally requires high dilution before microalgae cultivation, owing to its NH4+ toxicity and color inhibition to algal growth. An integrated pretreatment strategy of ammonia stripping and chemical flocculation may be a more practical pretreatment procedure for enhancing algae yield and nutrient recovery from anaerobic digestion piggery effluent. In this study, we determined the optimum pretreatment strategy of anaerobic digestion piggery effluent for subsequent microalgae cultivation and nutrient recovery. The results showed that the integrated anaerobic digestion piggery effluent pretreatment strategy of high-temperature ammonia stripping and chemical flocculation at a mixed dosage of 2 g L−1 polyaluminum chloride (PAC) and 40 mg L−1 cationic polyacrylamide (C-PAM), and 50 mg L−1 ammonium nitrogen (NH4+-N) enrichment provided maximum algal yield (optical density = 1.8) and nutrient removal (95.2%, 98.7%, 99.3%, and 78.5% for the removal efficiencies of total nitrogen, NH4+-N, total phosphorus, and chemical oxygen demand, respectively) from anaerobic digestion piggery effluent. The integrated pretreatment strategy is expected to become a more practical pretreatment procedure for enhancing algae yield and nutrient recovery from anaerobic digestion piggery effluent.

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Section: Resultssupporting

confidence: 81%

Enhancing algal growth and nutrient recovery from anaerobic digestion piggery effluent by an integrated pretreatment strategy of ammonia stripping and flocculation

Qian

Song

et al. 2023

Front. Bioeng. Biotechnol.

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“…Most sewage has the colloidal property of negative charge, and is often treated by the combined coagulation of polyaluminum chloride and cationic polyacrylamide [12][13][14]. The coagulation effect is affected by many factors, such as the dosage of coagulant, the dosage and particle size of heavy medium, settling time, stirring time, sewage pH, etc, and their reasonable setting is critical to the coagulation effect [15][16][17]. Only when each factor is set reasonably, can the flocculant play the best effect.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Quartz Sand Enhanced Coagulation for Sewage Treatment by Response Surface Methodology

Zhang,

Li,

Liu

et al. 2024

Preprint

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In the process of sewage coagulation treatment, quartz sand is often used as a heavy medium to accelerate the settling rate of flocs, but it will adversely affect the removal efficiency of pollutants. The factors that affect the coagulation effect and can be controlled manually include the quartz sand dosage, coagulant dosage, sewage pH, stirring time, settling time, etc, their reasonable setting is critical to. This paper was to study the optimal conditions of quartz sand enhanced coagulation(QSEC), first, single-factor tests were conducted to preliminarily explore the optimal range of influencing factors, and then response surface methodology（RSM）tests were performed to accurately determine the optimums of significant factors. The results showed that the addition of quartz sand can’t improve the water quality of coagulation treatment, but it can significantly accelerate the coagulation settlement process, the quartz sand dosage, the coagulant dosage and sewage pH all impacted significantly on its coagulation effect, and existed inflection points. A model that could guide QSEC was obtained by RSM tests. The model optimization and experimental validation showed that the optimal QSEC conditions for treating domestic sewage were as follows: the polyaluminum chloride(PAC) dosage, cationic polyacrylamide(CPAM) dosage, the sewage pH, quartz sand dosage, stirring time and settling time were 0.97 g·L-1, 2.25 mg·L-1, 7.22, 2 g·L-1, 5 minutes and 30 minutes, respectively, and the turbidity of treated sewage was reduced to 1.15 NTU.

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Improving the Removal of Anionic Surfactant in Cardboard Industry Wastewater by Coagulation/Flocculation: Process Optimization with Response Surface Methodology

Harif

Aboulhassan

Bammou

et al. 2023

Water Air Soil Pollut

Self Cite

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Response surface methodology (RSM) and Box–Behnken design (BBD) were investigated to optimize the coagulation–flocculation process (CF) of cardboard industry effluent using polyaluminum chloride (PAC) and cationic polyacrylamides (c-PAM). The aim is to identify the optimum combination of coagulant dose, pH, and flocculant dosage for the highest removal efficacy of chemical oxygen demand (COD) and anionic surfactant removal. According to the results, COD reduction was principally controlled by PAC and c-PAM, while anionic surfactant was affected by pH and PAC. In addition, COD and anionic surfactant removal models fitted well with the experimental results (R2 > 0.85). Coagulation/flocculation using optimum conditions of pH, PAC, and c-PAM led to the total removal of anionic surfactant and the reduction of more than 95% of COD.

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Multi-response optimization for color removal from cardboard wastewater using polyaluminum chloride and cationic polyacrylamide

Cited by 8 publications

References 39 publications

Enhancing algal growth and nutrient recovery from anaerobic digestion piggery effluent by an integrated pretreatment strategy of ammonia stripping and flocculation

Enhancing algal growth and nutrient recovery from anaerobic digestion piggery effluent by an integrated pretreatment strategy of ammonia stripping and flocculation

Optimization of Quartz Sand Enhanced Coagulation for Sewage Treatment by Response Surface Methodology

Improving the Removal of Anionic Surfactant in Cardboard Industry Wastewater by Coagulation/Flocculation: Process Optimization with Response Surface Methodology

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