Performance evaluation and fouling analysis for reverse osmosis and nanofiltration membranes during processing of lignocellulosic biomass hydrolysate

Gautam, AmitKumar; Menkhaus, Todd J.

doi:10.1016/j.memsci.2013.09.042

Cited by 63 publications

(48 citation statements)

References 72 publications

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“…d Feed solution containing 2,000 mg/L of MgSO4, filtration at 4.8 bar, 25 °C, and recovery rate of 15%. e Reference: (Xu et al, 2005) f Reference: (Gautam and Menkhaus, 2014) g Reference: (Wang and Tang, 2011) h Reference: (Zulaikha et al, 2014) i Reference: (Nghiem et al, 2004) Brazilian Journal of Chemical Engineering Vol. 34, No.…”

Section: Evaluation Of Membrane Performance Regarding Foulingmentioning

confidence: 99%

Nanofiltration and Reverse Osmosis Applied to Gold Mining Effluent Treatment and Reuse

Andrade

Aguiar

Pires

et al. 2017

Braz. J. Chem. Eng.

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-Gold mining and ore processing are activities of great economic importance. However, they are related to generation of extremely polluted effluents containing high concentrations of heavy metals and low pH. This study aims to evaluate the optimal conditions for gold mining effluent treatment by crossflow membrane filtration regarding the following variables: nanofiltration (NF) and reverse osmosis (RO) membrane types, feed pH and permeate recovery rate. It was observed that retention efficiencies of NF90 were similar to those of RO membranes though permeate fluxes obtained were 7-fold higher. The optimum pH value was found to be 5.0, which resulted in higher permeate flux and lower fouling formation. At a recovery rate above 40% there was a significant decrease in permeate quality, so this was chosen as the maximum recovery rate for the proposed system. We conclude that NF is a suitable treatment for gold mining effluent at an estimated cost of US$ 0.83/m³.

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Section: Evaluation Of Membrane Performance Regarding Foulingmentioning

confidence: 99%

Nanofiltration and Reverse Osmosis Applied to Gold Mining Effluent Treatment and Reuse

Andrade

Aguiar

Pires

et al. 2017

Braz. J. Chem. Eng.

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“…The streams resulted from the pretreatment and enzymatic hydrolysis contains dilute sugars, along with excess components such as enzymes and biomass. The sugars released from hydrolysis may inhibit enzyme significantly, hence retarding the rate of enzymatic degradation [4,5]. In order to increase the conversion of enzymatic hydrolysis, the removal and concentration of the sugars from the hydrolysate can contribute towards not only in improving the hydrolysis but also in recovering the used enzymes.…”

Section: Masniroszaime and Abdul Wahab: Effect Of Ph On Flux Decline Dumentioning

confidence: 99%

EFFECT OF pH ON FLUX DECLINE DURING FRACTIONATION OF GLUCOSE FROM CELLULOSE HYDROLYSATE THROUGH A POLYSULFONE MEMBRANE

Zain

Mohammad²

2016

MJAS

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Concentrating glucose after enzymatic hydrolysis of lignocellulosic biomass is an important step in order to prepare the stream to undergo the fermentation process. However, glucose itself can be inhibitor for the enzymatic hydrolysis, hence in situ glucose removal is recommended. Ultrafiltration represents a promising procedure for isolation of enzymes from hydrolysate and for the removal of glucose. One of the obstacles in successfully utilizing ultrafiltration's membranes has been due to the membrane fouling. The flux behavior of polysulfone (PSF) membrane was studied in concentrating glucose from cellulose hydrolysate during dead end ultrafiltration. Different pH of solutions was used and Kumar's model was applied to analyse the fouling mechanism. The minimum fouling was obtained at pH solution above the IEP due to protein-protein and membrane-protein repulsions alleviating aggregation and fouling. Cake formation blocking was identified as the dominant mechanism for flux decline.Keywords: enzyme hydrolysis, lignocellulosic biomass, ultrafiltration, polysulfone, fouling Abstrak Pemekatan glukosa selepas hidrolisis enzim bagi penghasilan bioetanol daripada biojisim lignoselulosa merupakan langkah yang penting bagi penyediaan untuk proses fermentasi selanjutnya. Penuras ultra menjadi pilihan bagi kaedah yang berpotensi untuk penyekatan enzim dan penyingkiran glukosa daripada larutan hidrolisis. Namun, salah satu rintangan bagi penggunaan maksima bagi penuras ultra adalah kotoran. Kriteria fluks bagi membran polisulfon di kaji dari pemekatan glukosa oleh larutan hidrolisis selulosa di penuras ultra hujung mati. Larutan yang berlainan pH digunakan untuk mengkaji profil fluks dan model Kumar digunakan untuk menganalisis mekanisma kotoran. Kotoran yang minima diperolehi pada larutan yang mempunyai pH yang lebih tinggi daripada nilai titik isoelektrik larutan hidrolisis. Halangan pembentukan kek telah dikenalpasti sebagai mekanisma yang dominan bagi pengurangan fluks.

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“…These dilute fermentable sugars, which are the products from the enzymatic hydrolysis, may inhibit enzyme significantly, hence plaguing the rate of enzymatic degradation. 6,7 To overcome these deficiencies, the removal of the sugars from the hydrolysate by membrane process can contribute towards not only in improving the hydrolysis but also in recovering the used enzymes. This can help to decrease the cost of enzymatic hydrolysis by reducing the usage of enzyme by recycling.…”

Section: Introductionmentioning

confidence: 99%

Flux and Permeation Behaviour of Ultrafiltration in Sugaring Out Cellulose Hydrolysate Solution: A Membrane Screening

Zain

Mohammad²,

Hairom

2017

JPS

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Performance evaluation and fouling analysis for reverse osmosis and nanofiltration membranes during processing of lignocellulosic biomass hydrolysate

Cited by 63 publications

References 72 publications

Nanofiltration and Reverse Osmosis Applied to Gold Mining Effluent Treatment and Reuse

Nanofiltration and Reverse Osmosis Applied to Gold Mining Effluent Treatment and Reuse

EFFECT OF pH ON FLUX DECLINE DURING FRACTIONATION OF GLUCOSE FROM CELLULOSE HYDROLYSATE THROUGH A POLYSULFONE MEMBRANE

Flux and Permeation Behaviour of Ultrafiltration in Sugaring Out Cellulose Hydrolysate Solution: A Membrane Screening

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