柚皮残渣制备活性炭对Cu2+吸附性能 |
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引用本文: | 李本盛,吴彩斌,倪帅男,袁程方. 柚皮残渣制备活性炭对Cu2+吸附性能[J]. 有色金属科学与工程, 2018, 9(6): 38-44. DOI: 10.13264/j.cnki.ysjskx.2018.06.006 |
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作者姓名: | 李本盛 吴彩斌 倪帅男 袁程方 |
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作者单位: | 1.江西理工大学资源与环境工程学院,江西 赣州 341000 |
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基金项目: | 赣州市科技创新人才计划项目赣州财教字[2017]179号 |
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摘 要: | 以柚皮为材料,提取柚皮苷后残渣制备柚皮基活性炭(简称PPAB),研究其在不同pH、投加量、吸附质浓度、时间、温度、粒径、解吸剂条件下对水中Cu2+的吸附性能.结果表明:在pH值为6,PPAB投加量4 g/L,溶液温度35 ℃,Cu2+初始浓度30 mg/L,吸附60 min,PPAB对Cu2+去除率94.47 %,最大吸附容量7.09 mg/g;0.25 mol/L盐酸脱附Cu2+效果较优,回收率98.21 %.吸附过程Langmuir等温式能较好拟合,此工艺下PPAB平均得率36.9 %,比表面积高达1 764 m2/g.柚皮基活性炭作为吸附剂处理低浓度重金属废水具有广阔前景.
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关 键 词: | 资源化 柚皮活性炭 含铜废水 吸附性能 |
收稿时间: | 2018-07-08 |
Cu2+ adsorption properties of activated carbon prepared by pomelo peel residue |
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Affiliation: | 1.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China2.Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Ganzhou 341000, China |
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Abstract: | Pomelo peel-based activated carbon (PPAB) was prepared from the residue after extracting naringin. The adsorption performance for Cu2+ in solution was studied under different pH, density, adsorbate concentration, time, temperature, adsorbent particle size and desorption agent. The results showed that the removal rate of PPAB for Cu2+ was 94.47 %, and the maximum adsorption capacity was 7.09 mg/g under the conditions of the pH 6, the density of PPAB 4 g/L, the initial concentration of Cu2+ 30 mg/L, the temperature 35 ℃ and the time 60 min. The effect of 0.25 mol/L hydrochloric acid desorption for Cu2+ was the best, and the recovery rate was 98.21 %. The Langmuir isotherm could be well fitted in the adsorption process. The average yield of PPAB was 36.9 %, and the specific surface area was up to 1 764 m2·g-1. PPAB has broad prospects as adsorbent for the treatment of wastewater with low concentration heavy metals. |
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