Characterisation of foulants in a PVDF tubular cross flow ultrafiltration membrane by ATR/FTIR spectrometry

Devaraj V, . and Ahmad Fauzi I, . and Zairossani Mohd Nor, . and Devaraj V, . and Ahmad Fauzi I, . and Zairossani Mohd Nor, . and Devaraj V, . and Ahmad Fauzi I, . and Zairossani Mohd Nor, . Characterisation of foulants in a PVDF tubular cross flow ultrafiltration membrane by ATR/FTIR spectrometry. pp. 71-79. ISSN 1511-1768

Attenuated Total Internal Reflection Fourier Transform Infrared Spectrometry (ATR-FTIR)was used to study the chemical nature of the deposits on the fouled polyvinylidene fluoride(PVDF) tubular membrane after the concentration of natural rubber skim latex by cross-flow ultrafiltration process. The subtraction spectroscopy analysis (subtraction of spectrum of the fouled membrane by the spectrum of the unused clean membrane) indicated that the major composition of the foulants found on the interior surface of the membrane could be of natural rubber latex protein derivatives (amino acids; bonded NH; NH2 and amine) and the smaller rubber particles that plugged the membrane pores. The chemical nature of inorganic foulants originating from metallic ions from the preservation system of the natural rubber latex could not be determined. The current membrane cleaning procedure is not effective enough to remove all the organic foulants. This study only provides a preliminary identification of the functional groups and needs further confirmation by other analytical tools for a full characterisation of the foulants for formulating a more effective membrane cleaning procedure.

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Abstract

Attenuated Total Internal Reflection Fourier Transform Infrared Spectrometry (ATR-FTIR)was used to study the chemical nature of the deposits on the fouled polyvinylidene fluoride(PVDF) tubular membrane after the concentration of natural rubber skim latex by cross-flow ultrafiltration process. The subtraction spectroscopy analysis (subtraction of spectrum of the fouled membrane by the spectrum of the unused clean membrane) indicated that the major composition of the foulants found on the interior surface of the membrane could be of natural rubber latex protein derivatives (amino acids; bonded NH; NH2 and amine) and the smaller rubber particles that plugged the membrane pores. The chemical nature of inorganic foulants originating from metallic ions from the preservation system of the natural rubber latex could not be determined. The current membrane cleaning procedure is not effective enough to remove all the organic foulants. This study only provides a preliminary identification of the functional groups and needs further confirmation by other analytical tools for a full characterisation of the foulants for formulating a more effective membrane cleaning procedure.

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Item Type:	Article
AGROVOC Term:	Spectroscopy
AGROVOC Term:	Natural rubber
AGROVOC Term:	Latex
AGROVOC Term:	Polymers
AGROVOC Term:	Membranes
AGROVOC Term:	Mechanical properties
Geographical Term:	Malaysia
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	28 Apr 2025 03:10
URI:	http://webagris.upm.edu.my/id/eprint/23045

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