Development of better quality low-cost activated carbon from South African Pine tree (Pinus patula) sawdust: characterization and comparative phenol adsorption

Mukosha Lloyd, Maurice S. Onyango, Aoyi Ochieng, H. Kasaini

Research output: Contribution to journalArticle

Abstract

The remediation of water resources pollution in developing countries requires the application of alternative sustainable cheaper and efficient end-of-pipe wastewater treatment technologies. The feasibility of use of South African cheap and abundant pine tree (Pinus patula) sawdust for
development of lowcost AC of comparable quality to expensive commercial ACs in the abatement of water pollution was investigated. AC was developed at optimized two-stage N2-superheated steam activation conditions in a fixed bed reactor, and characterized for proximate and ultimate properties, N2-BET surface area, pore size distribution, SEM, pHPZC and FTIR. The sawdust pyrolysis activation energy was evaluated by TGA. Results indicated that the chars prepared at 800oC and 2hrs
were suitable for development of better quality AC at 800oC and 47%
burn-off having BET surface area (1086m2/g), micropore volume
(0.26cm3/g), and mesopore volume (0.43cm3/g) comparable to
expensive commercial ACs, and suitable for water contaminants
removal. The developed AC showed basic surface functionality at
pHPZC at 10.3, and a phenol adsorption capacity that was higher than that of commercial Norit (RO 0.8) AC. Thus, it is feasible to develop better quality low-cost AC from (Pinus patula) sawdust using twostage N2-steam activation in fixed-bed reactor.
Original languageEnglish
Pages (from-to)546-556
Number of pages11
JournalInternational Journal of Chemical and Molecular Engineering
Volume7
Issue number7
Publication statusPublished - 2013

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activated carbon
phenol
adsorption
surface area
cost
water pollution
activation energy
pyrolysis
remediation
pipe
developing world
scanning electron microscopy
water resource
pollution
sawdust
water
reactor
wastewater treatment

Cite this

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title = "Development of better quality low-cost activated carbon from South African Pine tree (Pinus patula) sawdust: characterization and comparative phenol adsorption",
abstract = "The remediation of water resources pollution in developing countries requires the application of alternative sustainable cheaper and efficient end-of-pipe wastewater treatment technologies. The feasibility of use of South African cheap and abundant pine tree (Pinus patula) sawdust for development of lowcost AC of comparable quality to expensive commercial ACs in the abatement of water pollution was investigated. AC was developed at optimized two-stage N2-superheated steam activation conditions in a fixed bed reactor, and characterized for proximate and ultimate properties, N2-BET surface area, pore size distribution, SEM, pHPZC and FTIR. The sawdust pyrolysis activation energy was evaluated by TGA. Results indicated that the chars prepared at 800oC and 2hrswere suitable for development of better quality AC at 800oC and 47{\%}burn-off having BET surface area (1086m2/g), micropore volume(0.26cm3/g), and mesopore volume (0.43cm3/g) comparable toexpensive commercial ACs, and suitable for water contaminantsremoval. The developed AC showed basic surface functionality atpHPZC at 10.3, and a phenol adsorption capacity that was higher than that of commercial Norit (RO 0.8) AC. Thus, it is feasible to develop better quality low-cost AC from (Pinus patula) sawdust using twostage N2-steam activation in fixed-bed reactor.",
author = "Mukosha Lloyd and Onyango, {Maurice S.} and Aoyi Ochieng and H. Kasaini",
year = "2013",
language = "English",
volume = "7",
pages = "546--556",
journal = "International Journal of Chemical and Molecular Engineering",
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TY - JOUR

T1 - Development of better quality low-cost activated carbon from South African Pine tree (Pinus patula) sawdust: characterization and comparative phenol adsorption

AU - Lloyd, Mukosha

AU - Onyango, Maurice S.

AU - Ochieng, Aoyi

AU - Kasaini, H.

PY - 2013

Y1 - 2013

N2 - The remediation of water resources pollution in developing countries requires the application of alternative sustainable cheaper and efficient end-of-pipe wastewater treatment technologies. The feasibility of use of South African cheap and abundant pine tree (Pinus patula) sawdust for development of lowcost AC of comparable quality to expensive commercial ACs in the abatement of water pollution was investigated. AC was developed at optimized two-stage N2-superheated steam activation conditions in a fixed bed reactor, and characterized for proximate and ultimate properties, N2-BET surface area, pore size distribution, SEM, pHPZC and FTIR. The sawdust pyrolysis activation energy was evaluated by TGA. Results indicated that the chars prepared at 800oC and 2hrswere suitable for development of better quality AC at 800oC and 47%burn-off having BET surface area (1086m2/g), micropore volume(0.26cm3/g), and mesopore volume (0.43cm3/g) comparable toexpensive commercial ACs, and suitable for water contaminantsremoval. The developed AC showed basic surface functionality atpHPZC at 10.3, and a phenol adsorption capacity that was higher than that of commercial Norit (RO 0.8) AC. Thus, it is feasible to develop better quality low-cost AC from (Pinus patula) sawdust using twostage N2-steam activation in fixed-bed reactor.

AB - The remediation of water resources pollution in developing countries requires the application of alternative sustainable cheaper and efficient end-of-pipe wastewater treatment technologies. The feasibility of use of South African cheap and abundant pine tree (Pinus patula) sawdust for development of lowcost AC of comparable quality to expensive commercial ACs in the abatement of water pollution was investigated. AC was developed at optimized two-stage N2-superheated steam activation conditions in a fixed bed reactor, and characterized for proximate and ultimate properties, N2-BET surface area, pore size distribution, SEM, pHPZC and FTIR. The sawdust pyrolysis activation energy was evaluated by TGA. Results indicated that the chars prepared at 800oC and 2hrswere suitable for development of better quality AC at 800oC and 47%burn-off having BET surface area (1086m2/g), micropore volume(0.26cm3/g), and mesopore volume (0.43cm3/g) comparable toexpensive commercial ACs, and suitable for water contaminantsremoval. The developed AC showed basic surface functionality atpHPZC at 10.3, and a phenol adsorption capacity that was higher than that of commercial Norit (RO 0.8) AC. Thus, it is feasible to develop better quality low-cost AC from (Pinus patula) sawdust using twostage N2-steam activation in fixed-bed reactor.

M3 - Article

VL - 7

SP - 546

EP - 556

JO - International Journal of Chemical and Molecular Engineering

JF - International Journal of Chemical and Molecular Engineering

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