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標題: 竹製活性炭-製造條件之選定
The Manufacture of Bamboo Activated Carbon- Determination of Manufacture Terms
作者: 王政龍
Wang, Cheng-Lung
關鍵字: surface area;表面積;adsorption;carbonization;activation;吸附;炭化;活化
出版社: 森林學系
本研究使用嘉義地區的孟宗竹(Phyllostachys heterocycla Mitf.)和綠竹(Bambusa atrovirens Wen.)為原料,探討在不同條件下製造出擁有較大表面積及高收率的活性炭。活性炭之製造乃將含碳物質經一連串的處理程序,包括去水、炭化、活化等而製成。將試材烘乾後置入坩堝中,緊蓋坩堝,升溫速度以每分鐘上升0.5、1、2、5及10℃五種,到達炭化終點700℃維持1小時,將炭化後之試片再直接分別加熱至900、1000及1100℃並導入CO2或N2進行活化,活化過程1小時, CO2及N2之流速為100mL/min.。
基於耗時及收率考量,升溫速度以2℃/min.在炭化階段最適宜,至於試片之裝填量以裝滿之收率最高。活化時導入 CO2及N2,導入N2比 CO2之收率略高,但並沒有相差太大,但成本上 CO2比N2稍貴。不同含水率之試片及不同活化終點溫度對收率差異亦小。竹節比竹間收率較低,因此以竹材為原料製造活性炭,以竹間為用材較佳。

The purpose of this study was to evaluate the manufacture processes that produced active carbon with larger surface area and higher yield. These processes included dehydration, carbonization and activation. Two species of bamboo, Phyllostachys heterocycla Mitf. and Bambusa atrovirens Wen were tested. The test conditions composed of five levels of heating rate, 0.5, 1, 2, 5, 10 ℃/min, three levels of activation temperature, 900, 1000, 1100 ℃, and two kinds of gas, CO2 and N2 at the rate of 100ml/min were evaluated.
The results were found as follows:
(1)It was proper to heat bamboo at the rate of 2 ℃/min in carbonization stage.
(2)The yield of active carbon was higher for fully loaded bamboo without culm.
(3)There were no significant difference in yield for varied moisture contents of samples, varied activation temperatures and gases.
Therefore, The best condition to manufacture bamboo activated carbon of large sureface area, average diameter of pore and pore volume was that the samples were heated to 700 ℃ at the rate of 2oC/min, lasted for one hour at 700℃, reheated to 900℃, and added N2 at the rate of 100ml/min for one hour activation.
Appears in Collections:森林學系

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