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首页> 外文期刊>Materials science forum >Production and Characterisation of Single and Mixed Activated Carbons from Coconut Shell and Rubber Seed Pericarp Using Microwave-Induced Chemical Activating Agent
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Production and Characterisation of Single and Mixed Activated Carbons from Coconut Shell and Rubber Seed Pericarp Using Microwave-Induced Chemical Activating Agent

机译：微波诱导化学活化剂从椰子壳和橡胶皮果皮中制备和表征单一和混合活性炭

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摘要

Activated carbon from biomass namely coconut shell (CS-AC), rubber seed pericarp (RSP-AC) and their mixed blend (50:50 w/w) coconut shell-rubber seed pericarp activated carbon (CSRSP-AC) were successfully produced by using ZnCl_2 as chemical activating agent via microwave irradiation heating system. Activation process was performed in commercial microwave oven at power of 600W for 20 min by using 30%, 40% and 50% of ZnCl_2 concentrations. The activated carbon was characterized according to BET surface morphology, iodine number and percentage of MB removal. The results showed that the mixed CSRSP-AC produced the highest surface area of 584.68 mg~2/g with comparison to single CS-AC and RSP-AC at 445.9 mg~2/g and 462.5 mg~2/g respectively. Although CSRSP-AC has the highest surface area and pore volume development, RSP-AC was found to have the highest iodine number, with the opposite trend being observed with MB removal indicating that RSP-AC has the highest adsorptive capacity among the three activated carbons. The iodine number value and percentages of MB removal increased as the ZnCl_2 concentration increase from 30% to 50%. These findings revealed that activated carbon produced from mixed blend of coconut shell and rubber seed pericarp has almost similar characteristics to their respective activated carbon derived from single individual biomass.
机译：由生物质即椰子壳（CS-AC），橡胶种子果皮（RSP-AC）及其混合混合物（50:50 w / w）椰子壳-橡胶种子果皮活性炭（CSRSP-AC）成功地生产了活性炭。微波辐射加热系统，以ZnCl_2为化学活化剂。通过使用30％，40％和50％的ZnCl_2浓度，在商用微波炉中以600W的功率进行2​​0分钟的活化过程。根据BET表面形态，碘值和MB去除百分比表征活性炭。结果表明，与单一CS-AC和RSP-AC分别为445.9 mg〜2 / g和462.5 mg〜2 / g相比，混合的CSRSP-AC产生的最大表面积为584.68 mg〜2 / g。尽管CSRSP-AC具有最高的表面积和孔体积发展，但发现RSP-AC具有最高的碘值，观察到与MB去除相反的趋势，表明RSP-AC在三种活性炭中具有最高的吸附能力。随着ZnCl_2浓度从30％增加到50％，碘值和MB去除率增加。这些发现表明，由椰子壳和橡胶种子果皮的混合混合物生产的活性炭与它们各自的源自单个生物质的活性炭具有几乎相似的特性。

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