Removal of Reactive Orange 16 by adsorption onto activated carbon prepared from rice husk ash: statistical modelling and adsorption kinetics
Removal of Reactive Orange 16 by adsorption onto activated carbon prepared from rice husk ash: statistical modelling and adsorption kinetics
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DOI：
10.1080/01496395.2018.1559856
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发表时间：
2020-01-02
影响因子：
2.8
通讯作者：
Singh, R. S.
中科院分区：
文献类型：
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作者：
Ali, Akbar A. M.;Karthikeyan, R. K.;Singh, R. S.
以稻壳灰为原料制备低成本活性炭，用于活性橙子16的吸附去除。研究了吸附剂的选择、平衡时间、吸附剂用量、染料浓度、pH值等因素对吸附效果的影响。最小，0.25？g/100 mL、100 mg/L和9.0。该过程符合Langmuir等温式和Lagergren准二级动力学模型，速率常数为0.0216？g/mg？通过面心中心复合设计对工艺进行统计学优化和评价。去除最大染料量（Q（e）？=？当吸附剂用量为0.25 mg/100 mL，pH值为11.0，染料浓度为250 mg/L时，吸附剂对染料的吸附率为13.32 mg/g。
Low cost activated carbon was produced by treated rice husk ash for adsorptive removal of Reactive Orange 16. The selection of adsorbents, effect of equilibrium time, adsorbent dosage, concentration of dye, and pH on removal of dye was optimized as rice husk ash, 30?min, 0.25?g/100 mL, 100 mg/L, and 9.0, respectively. The process fits into Langmuir isotherm and Lagergren pseudo-second-order model with rate constant of 0.0216?g/mg?min. The process was statistically optimized and evaluated by face-centered central composite design. The maximum dye was removed (Q(e)?=?13.32 mg/g) at adsorbent dosage of 0.25 mg/100 mL, pH of 11.0, and concentration of dye: 250 mg/L.