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.

中文翻译：

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开发用于水净化的玉米芯生物炭滤池

该研究旨在从玉米芯生产生物炭及其在改善水理化特性方面的性能。三种原料（2、2.5、3 kg）用于生产生物炭。T1L1，T1L2，T1L3，T2L1，T2L2，T2L3，T3L1，T3L2和T3L3的九种处理组合一式三份用于生物炭性能。在慢速热解条件下（300至600°C）和120分钟停留时间，平均可获得50％的生物炭产率。生物炭的水分含量为4.13％，灰分为6.86％，挥发物为17.70％，固定碳为71.28％，pH为10.27。使用生物炭过滤后，废水的气味，颜色和总硬度得以改善，可用于饮用水。总硬度在T2L2中降低了51.9％，在T3L2中降低了44.4％。发现前玉米芯生物炭作为家用饮用水的净化技术。