Performance of cationic hemicelluloses arising from peanut shell residue from agroindustry in application as primary coagulant in physical-chemical treatment of dairy wastewater

Pacheco, Ingrid da Silva; Alves, Ana Gabriela Tomé; Santana, Lucas Chuman; Ribeiro, Elaine Angélica Mundim; Canobre, Sheila Cristina; Amaral, Fábio Augusto do

doi:10.1016/j.jwpe.2022.102661

Cited by 6 publications

(2 citation statements)

References 38 publications

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“…Tonhato Junior et al (2019) reported turbidity removal of 99% for the application of 0.23 mL L -1 of vegetable tannin at pH 4.9. Pacheco et al (2022) reported turbidity removal of 94.79 and 98.67%, for the dosage of 400 mL L -1 (coagulation pH 9 and 7.35) for Cationic Hemicellulose and TANFLOC SG, respectively.…”

Section: Grain Processing Effluent Treatability Testsmentioning

confidence: 97%

“…In the work of Pacheco et al 2022, the sludge was analyzed by energy dispersive X-ray spectroscopy indicating a pattern in elemental composition. When CH is applied to the treatment of a dairy effluent, the sludge presented the following elements: carbon (92.16 ± 1.13%), followed by oxygen (6.23 ±0.91), Na (0.53 ± 0.04) and P (0.39 ±0.02).…”

Section: Grain Processing Effluent Treatability Testsmentioning

confidence: 99%

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Investigation of new natural coagulant - cationic hemicellulose associated with cationic tannin - for coagulation/dissolved air flotation (C/DAF) in the treatment of industrial effluent

Alves¹,

Pacheco²,

Freitas³

et al. 2022

Rev. ambiente água

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The use of plant-based coagulants (natural coagulants) in wastewater treatments has potential advantages over the inorganic coagulants used commercially. This study evaluated organic coagulants cationic hemicelluloses (CH) synthesized from peanut shell and associated with commercial cationic tannin (TSG) for use as the primary coagulation/flocculation treatment, followed by solid-liquid separation via sedimentation/flotation by dissolved air (DAF). The assay was carried out in a jar test on effluent from a multinational industry in the grain processing sector, located in the city of Uberlândia-MG. Coagulation diagrams were determined using the data spatial interpolation method of the Kringing regression model and the Tukey test was used to assess the difference in the results obtained. The optimum removal points of turbidity removal efficiency (TRE), greater than 98%, were achieved for the TSG/CH association with 200 mg L-1 (pH 10.72), 350 mg L-1 (pH 9.72), 500 mg L-1 (pH 9.56) in sedimentation. For the separation by DAF, the association of TSG/CH resulted in TRE values greater than 95% at dosages of 350 mg L-1 (pH 9.59) and 500 mg L-1 (pH 7.92). Furthermore, the results indicate that the associated use of TSG/CH, a coagulation aid, favored the coupling of the DAF bubble-particle, resulting in a smaller volume of sludge. In addition, CH expanded the action of TSG to the basic region. Keywords: agroindustry residue, natural organic coagulants, primary physical chemical treatment.

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Section: Grain Processing Effluent Treatability Testsmentioning

confidence: 97%

Section: Grain Processing Effluent Treatability Testsmentioning

confidence: 99%

Investigation of new natural coagulant - cationic hemicellulose associated with cationic tannin - for coagulation/dissolved air flotation (C/DAF) in the treatment of industrial effluent

Alves¹,

Pacheco²,

Freitas³

et al. 2022

Rev. ambiente água

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Removal of chromium using rhamnolipid biosurfactant, ferrous sulfate and cationic tannin‐based flocculant in a dissolved air floating system using a central composite design (CCD)

Santos,

Lima,

Cardoso

et al. 2024

J Surfact & Detergents

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This research studied the wastewater chromium removal efficiency by dissolved air flotation (DAF) using a rhamnolipid (RL) biosurfactant as a collector. An experimental flotation DAF apparatus with 6 vessels of 2 L containing a coupled saturator injecting compressed air at 5.88 kPa in the vessels was used. The total RL concentration of the broth resulting from fermentation was 9 ± 1.0 g/L. This broth was used in nature in the DAF experiments. A central composite design (CCD) was used to optimize removal of Cr(VI) and total Cr with regards to two independent variables, pH (3.17–8.83) and iron concentration of the medium (0–225.0 mg/L), with a three assays performed at the conditions of the central point of the design. The experimental conditions for DAF were an initial hexavalent Cr concentration of 100 mg/L; RL broth volume of 500 mL; saturated with oxygen water volume of 200 mL; and a rapid mixing time of 6 min through stirring at 120 rpm. The results showed that under acidic pH conditions and with high iron concentrations, both the Cr(VI) and total Cr removal rates were highest. The optimal removal region determination was at a pH of 3.5 and iron concentration of 180 mg/L. Subsequently, cationic tannin‐based flocculant was also evaluated as a collector, and ferrous sulfate was used as a coagulant during Cr(III) removal. The best Cr(III) removal percentage was obtained at cationic polymer concentrations of 300 mg/L with Cr(III) removal of 50.8% and a pH of 5.5.

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Characterization and Ecotoxicity of Raw and Treated Liquid Effluent from the Washing of Soybean Seed Treatment Machines

Teles,

Gomes,

Pokrywiecki

et al. 2024

Water Air Soil Pollut

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Performance of cationic hemicelluloses arising from peanut shell residue from agroindustry in application as primary coagulant in physical-chemical treatment of dairy wastewater

Cited by 6 publications

References 38 publications

Investigation of new natural coagulant - cationic hemicellulose associated with cationic tannin - for coagulation/dissolved air flotation (C/DAF) in the treatment of industrial effluent

Investigation of new natural coagulant - cationic hemicellulose associated with cationic tannin - for coagulation/dissolved air flotation (C/DAF) in the treatment of industrial effluent

Removal of chromium using rhamnolipid biosurfactant, ferrous sulfate and cationic tannin‐based flocculant in a dissolved air floating system using a central composite design (CCD)

Characterization and Ecotoxicity of Raw and Treated Liquid Effluent from the Washing of Soybean Seed Treatment Machines

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