The use of rice husk as adsorbent would not only reduce its disposal problems, but would also produce value-added products, such as activated carbon derived from rice husk. This study aimed to determine the optimum carbonization temperature for activated carbon production from rice husk and its adsorption performance on Pb in car battery wastewater. In this study, activated carbon was produced by carbonizing rice husk 400-600 °C for 90-150 minutes followed by chemical activation using 5% Na2CO3 and sieving to 100 meshes. Lead adsorption was measured using atomic absorption spectroscopy (AAS). Results suggested that highest carbon yield of 47.75% was obtained for carbonization at 500 °C for 150 minutes. At that condition, produced activated carbon contained 3.35% moisture, 30.86% ash, 18.04% volatile matter. The adsorption capacity was found to be 0.6007 mg lead/g adsorbent with % adsorpsi 58.08%
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机译：用稻壳作为吸附剂的使用不仅会降低其处理问题，而且还会产生增值产品，例如衍生自稻壳的活性炭。本研究旨在确定稻壳活性炭生产的最佳碳化温度及其在汽车电池废水中PB的吸附性能。在该研究中，通过碳化稻壳400-600℃的活性炭产生90-150分钟，然后使用5％Na 2 CO 3和筛分为100目的。使用原子吸收光谱（AAS）测量铅吸附。结果表明，在500℃下碳化为47.75％的最高碳产率150分钟。在该条件下，产生的活性炭含有3.35％的水分，30.86％灰分，18.04％的挥发性物质。发现吸附能力为0.6007mg铅/克吸附剂，％Adsorpsi 58.08％
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