Evaluation of the Combined Process of Coagulation/Flocculation and Microfiltration of Cassava Starch Wastewater: Removal Efficiency and Membrane Fouling

Santos, Jordana Dorca dos; Veit, Márcia Teresinha; Palácio, Soraya Moreno; Gonçalves, Gilberto da Cunha; Fagundes‐Klen, Márcia Regina

doi:10.1007/s11270-017-3416-3

Cited by 22 publications

(8 citation statements)

References 28 publications

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“…In a relatively similar study, [36] where cassava starch wastewater was treated by the combined coagulation/flocculation process and microfiltration membrane system, the permeate flux was ten times less than the one obtained in the current study. The application of just 1 bar of TMP resulted in 100 L h −1 m −2 of steady permeate flux when iron(III) chloride was used for the pre-treatment.…”

Section: Membrane Filtration Methods After Coagulation/flocculation Pre-treatmentcontrasting

confidence: 64%

Potato Processing Wastewater Treatment Using a Combined Process of Chemical Coagulation and Membrane Filtration

Bouchareb¹,

Bilici

Dizge

2021

CLEAN Soil Air Water

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The potato-processing wastewater (PPW) treatment method employe a combined process of chemical coagulation/flocculation and membrane filtration. Four different inorganic coagulants are used: polyaluminium chloride, alum, iron(III) chloride and iron(II) sulphate. The results show that the inorganic coagulants enhanced both chemical oxygen demand (COD) with turbidity removal at 1 g/L of concentration. Iron(III) chloride is the most efficient for COD and turbidity removal efficiencies of 54% and 88%, respectively. At pH=6, COD and turbidity elimination performances are enhanced to 67% and 96%, respectively. The findings suggest that coagulation plays a key role in the removal of COD and turbidity of PPW, but water quality is again improved by a second stage of treatment. The utilisation of ultrafiltration (UP150) at 1 bar of transmembrane pressure (TMP) has highly improved water quality. At the end of this research, a comparative study is conducted between the combined process: coagulation/flocculation-membrane filtration and direct filtration of raw PPW. The results demonstrate that the primary stage of treatment is necessary to prevent early membrane fouling and provided high permeate flux. Even though, the most used treatments rely on combined coagulation/flocculation and membrane filtration systems, very few research articles are reported for PPW treatment.

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Section: Membrane Filtration Methods After Coagulation/flocculation Pre-treatmentcontrasting

confidence: 64%

Potato Processing Wastewater Treatment Using a Combined Process of Chemical Coagulation and Membrane Filtration

Bouchareb¹,

Bilici

Dizge

2021

CLEAN Soil Air Water

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“…This makes temperature, concentration, and reaction rate is independent of the reactor location. There is no buildup since CSTRs work in a steady state, and rA is position independent (Dos et al, 2017).…”

Section: Operational Conditionsmentioning

confidence: 99%

Congruence Study between the Continuous Chemical Reactor (CSTR) and the Maturation Oxidation Ponds within Wastewater Treatment

Younes¹,

Kaid²

2022

GEP

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People who are involved in managing wastewater treatment face the challenge of achieving conservation goals with limited funds, and also of balancing needs for nature conservation. This context has been motivated with finding logic explanations of wastewater treatment by oxidation ponds. Description of progressive we have made with developing methods is for understanding how, when and where had done to apply the oxidation ponds for protecting biodiversity. The Rashid oxidation pond facility was highlighted as a model plant for utilizing this technology in wastewater treatment in the city of Rashid, El-Beheira Governorate, Egypt. The main concept is based on the interaction of chemical pollutants NO 2 , NO 3 , BOD 5 -in, and BOD 5 -out and heavy metals with microorganisms as Chlorophyta Green and cyanophyta, and how these oxidation ponds imitate the Continuous Chemical Reactor (CSTR) to build its core architecture for maximum usefulness. By applying the theoretical equation of (CSTR) on the experimental results of the oxidation pond according to Thirumurthi equation, it was discovered that (CSTR) and oxidation pond are matching together with a satisfactory ratio of congruence (85% -88%). Also, the heavy metals as (iron, Zinc and copper) are high percentage removal by the algae rules. This investigation established that the oxidation ponds may function as a Continuous Chemical Reactor under ultimate conditions and precautions.

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“…The samples C. lanatus and C. melo were grounded and then compressed and formed into pellets. The pellets formed were analyzed covering a frequency range of 4000-400 cm -1 with a resolution of 4 cm -1 at room temperature [41].…”

Section: Ftir Analysismentioning

confidence: 99%

Response Surface Analysis for Sewage Wastewater Treatment Using Natural Coagulants

Joaquin¹,

Gnanasundaram²,

Kanakasabai³

2021

Pol. J. Environ. Stud.

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The studies on utilization of natural coagulants prepared from seeds of Citrullus lanatus (watermelon) and Cucumis melo (cantaloupe) provide insight on sewage wastewater treatment. The results were statistically analyzed by response surface methodology (RSM) based central composite design (CCD), and supported with results from Fourier Transform Infrared (FTIR) spectroscopy for functional groups present in coagulants. The batch coagulation studies were performed varying process parameters such as pH (5-7) and coagulant dosage (50-150 mg/L) at constant flocculant dosage of 10 mg/L using jar test. In jar test, coagulation was carried out with fast mixing (Mixing at 150 rpm for 1 min) followed by slow mixing (Mixing at 50 rpm for 30 min), and the final mixture was allowed to settle for 1 h at the temperature of 30±2ºC. Design-Expert® version 12 software was used to optimize pH and coagulant dosage for effective sewage wastewater treatment using natural coagulants with the objectives to maximize percentage reduction in turbidity, biological/biochemical oxygen demand (BOD), total suspended solids (TSS), and chemical oxygen demand (COD). The RSM results reveal that the optimum C. lanatus coagulant dosage of 72.3 mg/L at pH 5 achieved maximum efficacy removal of TSS and BOD by 92.8% and 92.1% respectively. The FTIR results show that the coagulants from plant seeds contain almost similar functional groups. Thus, it can be concluded that the coagulant prepared from C. lanatus would be more effective for treatment of sewage wastewater.

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Evaluation of the Combined Process of Coagulation/Flocculation and Microfiltration of Cassava Starch Wastewater: Removal Efficiency and Membrane Fouling

Cited by 22 publications

References 28 publications

Potato Processing Wastewater Treatment Using a Combined Process of Chemical Coagulation and Membrane Filtration

Potato Processing Wastewater Treatment Using a Combined Process of Chemical Coagulation and Membrane Filtration

Congruence Study between the Continuous Chemical Reactor (CSTR) and the Maturation Oxidation Ponds within Wastewater Treatment

Response Surface Analysis for Sewage Wastewater Treatment Using Natural Coagulants

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