Impact of cationic polyelectrolytes on activated sludge morphology and biological wastewater treatment in a Sequential Batch Reactor (SBR)

Piaskowski, Krzysztof; Świderska-Dąbrowska, Renata; Dąbrowski, Tomasz J.

doi:10.1016/j.jwpe.2023.103500

Cited by 8 publications

(4 citation statements)

References 27 publications

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“…Polyelectrolyte dosage emerged as a critical factor in turbidity removal, with the highest removal rates achieved at minimal polyelectrolyte dosages across all water samples. In the presence of suspended solids, low molecular mass polymers primarily react with soluble organics, while high molecular mass polymers, at low dosages, preferentially interact with suspended solids (Kapoor et al 2015;Piaskowski et al 2023). Consequently, PDADMAC, being a high molecular weight polyelectrolyte, operates optimally at a dosage of 2 mg/L for highly turbid canal and river water in June.…”

Section: Results Of Different Surface Water With Basic Statisticsmentioning

confidence: 99%

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Assessment of Poly (diallyl dimethyl ammonium chloride) and Lime for Surface Water Treatment (Pond, River, and Canal water): Seasonal Variations and Correlation Analyses

Jabin,

Kapoor,

Chadha

et al. 2024

Preprint

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This study investigates the basic characteristics of various surface water sources, including pond water, river water, and canal water, across four distinct seasons. The research endeavours to assess the impact of a cationic polyelectrolyte, specifically poly diallyl dimethyl ammonium chloride (PDADMAC), utilized as a coagulation aid in conjunction with lime for water treatment purposes. Employing a conventional jar test apparatus, turbidity removal from diverse water samples is examined. Furthermore, the samples undergo characterization utilizing X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) techniques. The study also conducts correlation analyses on various parameters such as electrical conductivity (EC), pH, total dissolved solids (TDS), turbidity of raw water, polyelectrolyte dosage, and percentage of turbidity removal across different water sources. Utilizing the Statistical Package for Social Science (SPSS) software, these analyses aim to establish robust relationships among initial turbidity, temperature, percentage of turbidity removal, dosage of coagulant aid, electrical conductivity, and total dissolved solids (TDS) in pond water, river water, and canal water. By elucidating these correlations, the study contributes to a deeper understanding of the effectiveness of PDADMAC and lime in water treatment processes across diverse environmental conditions. This research not only enhances our comprehension of surface water treatment methodologies but also provides valuable insights for optimizing water treatment strategies to address the challenges posed by varying water sources and seasonal fluctuations.

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Section: Results Of Different Surface Water With Basic Statisticsmentioning

confidence: 99%

“…Its high charge density and molecular weight facilitated the occulation of negatively charged suspended particles through adsorption and charge neutralization mechanisms. This effectiveness was particularly notable in high turbidity water compared to low turbidity water(Kapoor et al 2015;Piaskowski et al 2023).…”

mentioning

confidence: 99%

Assessment of Poly (diallyl dimethyl ammonium chloride) and Lime for Surface Water Treatment (Pond, River, and Canal water): Seasonal Variations and Correlation Analyses

Jabin,

Kapoor,

Chadha

et al. 2024

Preprint

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“…Water-soluble polymers are widely used in various consumer product formulations, e.g., personal care products, detergents, pharmaceutic and paint formulations [ 1 ], and agricultural fertilizers [ 2 ]. Cationic polyelectrolytes are also largely used as flocculants in the biological wastewater treatment of sludge [ 3 , 4 ]. After usage, water-soluble polymers are normally disposed of in landfills, incinerated, or directly dumped into rivers and aquatic environments.…”

Section: Introductionmentioning

confidence: 99%

The Seed Germination Test as a Valuable Tool for the Short-Term Phytotoxicity Screening of Water-Soluble Polyamidoamines

Ranucci,

Treccani,

Ferruti

et al. 2024

Polymers

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Six differently charged amphoteric polyamidoamines, synthesized by the polyaddition of N,N′-methylenebisacrylamide to alanine, leucine, serine, arginine (M-ARG), glutamic acid (M-GLU) and a glycine/cystine mixture, were screened for their short-term phytotoxicity using a seed germination test. Lepidium sativum L. seeds were incubated in polyamidoamine water solutions with concentrations ranging from 0.156 to 2.5 mg mL−1 at 25 ± 1 °C for 120 h. The seed germination percentage (SG%), an indicator of acute toxicity, and both root and shoot elongation, related to plant maturation, were the considered endpoints. The germination index (GI) was calculated as the product of relative seed germination times relative radical growth. The SG% values were in all cases comparable to those obtained in water, indicating no detectable acute phytotoxicity of the polyamidoamines. In the short term, the predominantly positively charged M-ARG proved to be phytotoxic at all concentrations (GI < 0.8), whereas the predominantly negatively charged M-GLU proved to be biostimulating at intermediate concentrations (GI > 1) and slightly inhibitory at 2.5 mg mL−1 (0.8 < GI < 1). Overall, polyamidoamine phytotoxicity could be correlated to charge distribution, demonstrating the potential of the test for predicting and interpreting the eco-toxicological behavior of water-soluble polyelectrolytes.

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“…At present, the removal methods of antibiotic drugs from water are mainly physical methods, [13][14][15][16] chemical methods [17][18][19][20] and biological methods. [21][22][23][24] These methods are not fully effective due to various limitations, such as incomplete decomposition causing secondary pollution and high energy consumption. [25] The characteristics and limitations of its processing method are listed in Table 1.…”

Section: Introductionmentioning

confidence: 99%

Solvothermal Synthesis of Fe³⁺‐doped Cu₂O Photocatalyst for Norfloxacin Removal from Water

Liu,

Yu,

Wang

et al. 2023

ChemistrySelect

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Photocatalytic technology has great potential in water pollution treatment. Prepared Fe3+‐doped Cu2O photocatalyst using solvothermal method successfully in this paper. Analyze and test the prepared samples and study their photocatalytic performance. The prepared samples have high purity and their morphology has undergone changes. By introducing Fe3+, the specific surface area of the sample increases and the absorption of visible light significantly increases. Further research found that the degree of hole separation of photogenerated electrons is obviously improved, this is due to a significant reduction in the surface resistance of the sample. The R2‐Cu2O degradation rate reached 80.5 % and it shows excellent photocatalytic performance.

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Impact of cationic polyelectrolytes on activated sludge morphology and biological wastewater treatment in a Sequential Batch Reactor (SBR)

Cited by 8 publications

References 27 publications

Assessment of Poly (diallyl dimethyl ammonium chloride) and Lime for Surface Water Treatment (Pond, River, and Canal water): Seasonal Variations and Correlation Analyses

Assessment of Poly (diallyl dimethyl ammonium chloride) and Lime for Surface Water Treatment (Pond, River, and Canal water): Seasonal Variations and Correlation Analyses

The Seed Germination Test as a Valuable Tool for the Short-Term Phytotoxicity Screening of Water-Soluble Polyamidoamines

Solvothermal Synthesis of Fe³⁺‐doped Cu₂O Photocatalyst for Norfloxacin Removal from Water

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Impact of cationic polyelectrolytes on activated sludge morphology and biological wastewater treatment in a Sequential Batch Reactor (SBR)

Cited by 8 publications

References 27 publications

Assessment of Poly (diallyl dimethyl ammonium chloride) and Lime for Surface Water Treatment (Pond, River, and Canal water): Seasonal Variations and Correlation Analyses

Assessment of Poly (diallyl dimethyl ammonium chloride) and Lime for Surface Water Treatment (Pond, River, and Canal water): Seasonal Variations and Correlation Analyses

The Seed Germination Test as a Valuable Tool for the Short-Term Phytotoxicity Screening of Water-Soluble Polyamidoamines

Solvothermal Synthesis of Fe3+‐doped Cu2O Photocatalyst for Norfloxacin Removal from Water

Contact Info

Product

Resources

About

Solvothermal Synthesis of Fe³⁺‐doped Cu₂O Photocatalyst for Norfloxacin Removal from Water