Predicting colloidal fouling of tap water by silt density index (SDI): Pore blocking in a membrane process

Habib, Muddasar; Habib, Usman; Memon, Abdul Rehman; Amin, Usman; Karim, Zahid; Khan, Afed Ullah; Naveed, Sayed; Ali, Sadiq

doi:10.1016/j.jece.2013.03.005

Cited by 11 publications

(7 citation statements)

References 33 publications

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“…The standard blocking coefficient Ks (i.e., the slope of t/(V/A) ∼ t) could be used as a representative fouling indicator for seawater because it showed good linearity with feed seawater containing low turbidity. Both SDI and MFI-MF 0.45 do not provide any information regarding the nature of the foulants passing through a 0.45 μm membrane and the risks of biofouling [30].…”

Section: Why Not Sdi or Mfi-mf 045μm ?mentioning

confidence: 99%

Practical use of standard pore blocking index as an indicator of biofouling potential in seawater desalination

Jeong

Vigneswaran

2015

Desalination

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Section: Why Not Sdi or Mfi-mf 045μm ?mentioning

confidence: 99%

Practical use of standard pore blocking index as an indicator of biofouling potential in seawater desalination

Jeong

Vigneswaran

2015

Desalination

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“…This index is the most widely applied for testing fouling potential because it is simple to perform. SDI can be defined as the decline in the flux ratio after an elapsed filtration time and it measures the fouling potential of influent due to the particles present 25,26 . The SDI value is calculated as follows:

SDI = \frac{1 - \frac{t_{i}}{t_{f}}}{normalT}

where t i is the time initially required to collect a volume V (min), t f is the time required to collect the same volume V at the end of the test (min), and T refers to the time interval between the collection of the initial and final samples (min).…”

Section: Methodsmentioning

confidence: 99%

Investigating the fouling potential of the metal‐silicate complex on membrane by response surface method (RSM)

Yang

Chuang

2023

J of Chemical Tech & Biotech

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BACKGROUND To optimize the filtration efficiency of membrane systems for chemical mechanical polishing (CMP) wastewater, the fouling potential of silica, aluminum‐silicate complex, and copper‐silicate complex was investigated by the response surface method. RESULTS The mathematical models for three kinds of fouling were successfully developed based on the SDI0.1μm‐1atm and MFI0.1μm‐1atm to describe the fouling potential. These models indicate that the metal‐silicate complex fouling was severe at a neutral pH. Moreover, the models reveal that the effect of metal ions on fouling potential is significant. Compared with the feed solution conditions of 500 mg SiO2 /L and pH 7.5, when 1 and 5 mg Al3+/L are added, the MFI0.1μm‐1atm values increase by 109% and 156%, respectively. In addition, when 1 and 5 mg Cu2+/L are added, the MFI0.1μm‐1atm values increase by 210% and 313%, respectively. CONCLUSION The decrease in filtration efficiency was in the order of copper‐silicate complex > aluminum‐silicate complex > silica. Therefore, the fouling potential increased significantly when the influent contained trace metal ions (Al3+ or Cu2+) at a near‐neutral pH, demonstrating the importance of managing pH and metal ions in CMP wastewater for membrane systems. In addition, the MFI0.1μm‐1atm is more suitable than the SDI0.1μm‐1atm for evaluating fouling potential. The SDI0.1μm‐1atm has limited value and a narrow range for fouling potential measurement. In contrast, the MFI0.1μm‐1atm is more sensitive and has a more comprehensive detection range. © 2023 Society of Chemical Industry (SCI).

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“…However, fouling inhibition and control are the main challenges which affect both capital and operating costs as fouling reduces the permeate flux and can result in membrane failure in extreme cases (Kim and Dempsey 2013;Ochando-Pulido et al 2012a;Aryal et al 2015;Srisukphun, Chiemchaisri, and Yamamoto 2009). In general, fouling can be caused by biological growth (biofouling) (Haaken et al 2014), by the deposition of inorganic precipitates or particles on or within the membrane (Habib et al 2013), or by the attachment of organic matter on the membrane (Abu Semen et al 2012;Tang et al 2010). Therefore, the pretreatment of the feedstock has been proposed as a key task to fouling inhibition (Abu Semen et al 2010;Abu Semen et al 2011;Koo et al 2013;OchandoPulido, Hodaifa, and Martinez-Ferez 2012b;Sato et al 2014;Stanford et al 2011;Yu and Graham 2015).…”

Section: Introductionmentioning

confidence: 99%

Fouling Inhibition of Membrane Separation by H₂O₂/UV Pre-oxidation for Color Filter Effluent Reuse

Yen

2015

Ozone: Science & Engineering

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This study evaluated the feasibility of treating color filter effluent by H 2 O 2 /UV pre-oxidation and membrane postseparation for in-house reuse. The effluent qualities were TOC of 5.8-34 mg/L, color of 46-138 ADMI, and conductivity of 1020-3500 μS/cm. Although the RO separation could directly remove TOC, color, and conductivity effectively, the serious fouling problem still existed. Through H 2 O 2 /UV pre-oxidation (UV = 13 W, H 2 O 2 = 200 mg/L), organic and biofouling were inhibited to increase the normalized flux decline from 5% to 77%. That is, H 2 O 2 /UV pre-oxidation could mitigate the permeate flux decline as well as to improve the water quality for water reuse. ARTICLE HISTORY

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Predicting colloidal fouling of tap water by silt density index (SDI): Pore blocking in a membrane process

Cited by 11 publications

References 33 publications

Practical use of standard pore blocking index as an indicator of biofouling potential in seawater desalination

Practical use of standard pore blocking index as an indicator of biofouling potential in seawater desalination

Investigating the fouling potential of the metal‐silicate complex on membrane by response surface method (RSM)

Fouling Inhibition of Membrane Separation by H₂O₂/UV Pre-oxidation for Color Filter Effluent Reuse

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Predicting colloidal fouling of tap water by silt density index (SDI): Pore blocking in a membrane process

Cited by 11 publications

References 33 publications

Practical use of standard pore blocking index as an indicator of biofouling potential in seawater desalination

Practical use of standard pore blocking index as an indicator of biofouling potential in seawater desalination

Investigating the fouling potential of the metal‐silicate complex on membrane by response surface method (RSM)

Fouling Inhibition of Membrane Separation by H2O2/UV Pre-oxidation for Color Filter Effluent Reuse

Contact Info

Product

Resources

About

Fouling Inhibition of Membrane Separation by H₂O₂/UV Pre-oxidation for Color Filter Effluent Reuse