Development of maize cob-based biochar filter for water purification
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Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
Water and Environment Journal
Abstract
The study aimed at biochar production from maize cob and its performance in
improving water physiochemical attributes. Three feedstock masses (2, 2.5, 3 kg)
were used for biochar production. Nine treatment combinations of T1L1, T1L2,
T1L3, T2L1, T2L2, T2L3, T3L1, T3L2 and T3L3 in triplicate were used for biochar
performance. Biochar yield of 50% was averagely achieved at slow pyrolysis conditions
(300 to 600°C) and 120 min residence time. Biochar had 4.13% moisture
content, 6.86% ash, 17.70% volatile matter, 71.28% fixed carbon, and a pH of
10.27. Odour, colour, and total hardness of the wastewater improved after filtration
using biochar to acceptable levels for potable water use. Total hardness
reduced by 51.9% in T2L2 and 44.4% in T3L2. Findings front maize cob biochar
as a purification technology for domestic potable water use. There is need for
maize cob biochar performance on heavy metals and when it is sandwiched with
other materials.
Description
Keywords
Biochar, Maize cobs, Pyrolysis, Water filter, Water quality
Citation
Oluk, I., Nagawa, C. B., Banadda, N., Tumutegyereize, P., & Owusu, P. A. (2021). Development of maize cob‐based biochar filter for water purification. Water and Environment Journal, 35(1), 349-358. doi:10.1111/wej.12631