Acid-base Modification of Microwave Biochar derived from Sago Bark for Heavy Metals Removal

Biochar is well known to be used for environmental purpose especially as an adsorbent for heavy metal removal. However, some properties of biochar in its original form can be further improved to enhance the removal of heavy metal. In this study, biochar production via microwave pyrolysis technology...

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Main Author:	Nur Fakhirah Qurratu’ain, Zuhaidi
Format:	Thesis
Language:	English
Published:	2019
Subjects:	TD Environmental technology Sanitary engineering
Online Access:	http://ir.unimas.my/id/eprint/25820/2/Nur%20Fakhirah.pdf
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id	my-unimas-ir.25820
record_format	uketd_dc
spelling	my-unimas-ir.258202023-04-19T08:29:59Z Acid-base Modification of Microwave Biochar derived from Sago Bark for Heavy Metals Removal 2019-07-14 Nur Fakhirah Qurratu’ain, Zuhaidi TD Environmental technology. Sanitary engineering Biochar is well known to be used for environmental purpose especially as an adsorbent for heavy metal removal. However, some properties of biochar in its original form can be further improved to enhance the removal of heavy metal. In this study, biochar production via microwave pyrolysis technology and the enhancement of the physical and chemical properties of biochar through acid-base modification was investigated. The adsorption of heavy metals by M-B and acid-base modified microwave biochar (M-Bab) were studied using batch study at different initial concentration and response surface methodology (RSM). RSM study was conducted using 1.00 - 3.00 mm of adsorbent particles size in heavy metal solution with range from pH 4 to 10 and contact time 30 - 90 min. BET analysis reveals that acid base modification was able to improve surface area of microwave biochar (M-B) by 75.18%, while SEM analysis showed that the porous structure of biochar was further improved after acid-base modification. The potential of M-B and M-Bab for Cd(II), Cr(III), Cu(II), Ni(II) and Pb(II) removal from water were investigated. Batch experiment showed that M-Bab afforded the highest removal of Cr(III), Cu(II), Ni(II) and Pb(II) at low concentration of heavy metal (5 - 25 ppm) compared to M-B. Based on the RSM experiment, pH plays important role in influencing the percentage removal of heavy metal. The pH 10.00 was observed to be the best condition for removal of heavy metals by M-B and M-Bab. Although M-B could not provide better removal of heavy metal at acidic condition, M-Bab is proven to remove heavy metal in acidic condition. Universiti Malaysia Sarawak (UNIMAS) 2019-07 Thesis http://ir.unimas.my/id/eprint/25820/ http://ir.unimas.my/id/eprint/25820/2/Nur%20Fakhirah.pdf text en validuser masters Universiti Malaysia Sarawak Faculty of Resource Science and Technology
institution	Universiti Malaysia Sarawak
collection	UNIMAS Institutional Repository
language	English
topic	TD Environmental technology Sanitary engineering
spellingShingle	TD Environmental technology Sanitary engineering Nur Fakhirah Qurratu’ain, Zuhaidi Acid-base Modification of Microwave Biochar derived from Sago Bark for Heavy Metals Removal
description	Biochar is well known to be used for environmental purpose especially as an adsorbent for heavy metal removal. However, some properties of biochar in its original form can be further improved to enhance the removal of heavy metal. In this study, biochar production via microwave pyrolysis technology and the enhancement of the physical and chemical properties of biochar through acid-base modification was investigated. The adsorption of heavy metals by M-B and acid-base modified microwave biochar (M-Bab) were studied using batch study at different initial concentration and response surface methodology (RSM). RSM study was conducted using 1.00 - 3.00 mm of adsorbent particles size in heavy metal solution with range from pH 4 to 10 and contact time 30 - 90 min. BET analysis reveals that acid base modification was able to improve surface area of microwave biochar (M-B) by 75.18%, while SEM analysis showed that the porous structure of biochar was further improved after acid-base modification. The potential of M-B and M-Bab for Cd(II), Cr(III), Cu(II), Ni(II) and Pb(II) removal from water were investigated. Batch experiment showed that M-Bab afforded the highest removal of Cr(III), Cu(II), Ni(II) and Pb(II) at low concentration of heavy metal (5 - 25 ppm) compared to M-B. Based on the RSM experiment, pH plays important role in influencing the percentage removal of heavy metal. The pH 10.00 was observed to be the best condition for removal of heavy metals by M-B and M-Bab. Although M-B could not provide better removal of heavy metal at acidic condition, M-Bab is proven to remove heavy metal in acidic condition.
format	Thesis
qualification_level	Master's degree
author	Nur Fakhirah Qurratu’ain, Zuhaidi
author_facet	Nur Fakhirah Qurratu’ain, Zuhaidi
author_sort	Nur Fakhirah Qurratu’ain, Zuhaidi
title	Acid-base Modification of Microwave Biochar derived from Sago Bark for Heavy Metals Removal
title_short	Acid-base Modification of Microwave Biochar derived from Sago Bark for Heavy Metals Removal
title_full	Acid-base Modification of Microwave Biochar derived from Sago Bark for Heavy Metals Removal
title_fullStr	Acid-base Modification of Microwave Biochar derived from Sago Bark for Heavy Metals Removal
title_full_unstemmed	Acid-base Modification of Microwave Biochar derived from Sago Bark for Heavy Metals Removal
title_sort	acid-base modification of microwave biochar derived from sago bark for heavy metals removal
granting_institution	Universiti Malaysia Sarawak
granting_department	Faculty of Resource Science and Technology
publishDate	2019
url	http://ir.unimas.my/id/eprint/25820/2/Nur%20Fakhirah.pdf
_version_	1783728303387967488

Acid-base Modification of Microwave Biochar derived from Sago Bark for Heavy Metals Removal

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