TY - JOUR
T1 - Effects of zinc (Zn) and chromium (Cr) on the phenol-degrading bacteria growth kinetics
AU - Tengku-Mazuki, Tengku Athirrah
AU - Zulkharnain, Azham
AU - Subramaniam, Kavilasni
AU - Convey, Peter
AU - Gomez-Fuentes, Claudio
AU - Ahmad, Siti Aqlima
N1 - Funding Information:
This work was supported by Universiti Putra Malaysia, PUTRA Berimpak (9678900), Yayasan Penyelidikan Antartika Sultan Mizan (YPASM) and Centro de Investigacion y Monitoreo Ambiental Antàrctico (CIMAA). The authors also would like to thank Chilean Army and the Antarctic General Bernardo O'Higgins Station staff especially the Comandante de la Base O’Higgins; Teniente Coronel Jose Ignacio Alvarado Camps, the Comandante de la sección de exploracion y rescate O'higgins; Capitan René Salgado Rebolledo and the staff; especially Sargento Segundo Augusto Antonio Barra Morale, Sargento Segundo Flavio Marcelo Nahuelcoy Perez and Sargento Segundo Claudio Durand Ibacache.
Funding Information:
This work was supported by Universiti Putra Malaysia, PUTRA Berimpak (9678900), Yayasan Penyelidikan Antartika Sultan Mizan (YPASM) and Centro de Investigacion y Monitoreo Ambiental Ant?rctico (CIMAA). The authors also would like to thank Chilean Army and the Antarctic General Bernardo O'Higgins Station staff especially the Comandante de la Base O'Higgins; Teniente Coronel Jose Ignacio Alvarado Camps, the Comandante de la secci?n de exploracion y rescate O'higgins; Capitan Ren? Salgado Rebolledo and the staff; especially Sargento Segundo Augusto Antonio Barra Morale, Sargento Segundo Flavio Marcelo Nahuelcoy Perez and Sargento Segundo Claudio Durand Ibacache.
PY - 2020/4
Y1 - 2020/4
N2 - Heavy metals occur naturally within the earth crust; however, anthropogenic activities can artificially introduce these elements into the environment. Despite being the foremost isolated continent, Antarctica is not free from human contamination. Heavy metals are well-known to be the powerful inhibitors of xenobiotics biodegradation activities. A microbial growth model was presented for bacteria cell growth in the biodegradation of phenol containing heavy metals such as zinc (Zn) and chromium (Cr) ions. The Gompertz model was used to estimate three main growth parameters namely lag phase (?), maximum growth rate (μmaz), and maximum cell number at the stationary phase (Nmax). Bacterial growth for both heavy metals was shown to be properly fit towards the curve with a high value of R2 and low square root of the variance of residuals (RSME) value. The effect of heavy metals at 1.0 ppm showed that Cr has a considerable effect on bacteria consortium, inhibiting the degradation of phenol, while Zn has no effect, removing 100% of phenol. The predicted biokinetic from this model suggests the suitability of the bacteria consortium to be used in phenol removal.
AB - Heavy metals occur naturally within the earth crust; however, anthropogenic activities can artificially introduce these elements into the environment. Despite being the foremost isolated continent, Antarctica is not free from human contamination. Heavy metals are well-known to be the powerful inhibitors of xenobiotics biodegradation activities. A microbial growth model was presented for bacteria cell growth in the biodegradation of phenol containing heavy metals such as zinc (Zn) and chromium (Cr) ions. The Gompertz model was used to estimate three main growth parameters namely lag phase (?), maximum growth rate (μmaz), and maximum cell number at the stationary phase (Nmax). Bacterial growth for both heavy metals was shown to be properly fit towards the curve with a high value of R2 and low square root of the variance of residuals (RSME) value. The effect of heavy metals at 1.0 ppm showed that Cr has a considerable effect on bacteria consortium, inhibiting the degradation of phenol, while Zn has no effect, removing 100% of phenol. The predicted biokinetic from this model suggests the suitability of the bacteria consortium to be used in phenol removal.
KW - Antarctica
KW - Degradation
KW - Heavy metals
KW - Kinetic growth
KW - Phenol
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M3 - Article
AN - SCOPUS:85085208916
SN - 1511-2616
VL - 23
SP - 1
EP - 4
JO - Malaysian Journal of Biochemistry and Molecular Biology
JF - Malaysian Journal of Biochemistry and Molecular Biology
IS - 1
ER -