原始和衍生的余甘子种皮修复水中As(III)离子的统计分析

IF 1.6 Q3 WATER RESOURCES Water Practice and Technology Pub Date : 2023-10-17 DOI:10.2166/wpt.2023.165
Rajeev Kumar, Jyoti Chawla, Madhvi Nayyar
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引用次数: 0

摘要

摘要本研究旨在确定原始余甘子种皮(PPE)和衍生余甘子种皮(DPE)制备的吸附剂修复水中As(III)离子的最佳条件,并利用Box-Behnken设计(BBD)和中心复合设计(CCD)优化技术进行分析。实验设计时以pH、初始离子浓度、投加量、接触时间为工艺参数。两种吸附剂的理想因数如下:(1)与CCD(0.8)相比,BBD为1.0。两种吸附剂的回归系数(R2)分别在0.993 ~ 0.999和0.965 ~ 0.969之间。结果表明,该方法更适合于不同条件下的实验设计、最大去除率变量的优化和去除率的估计。在pH为7.13、砷初始浓度为99.02 mg/L、接触时间为105.13 min、PPE用量为0.12 g/L的最佳条件下,BBD对平衡离子的吸附量(qe)为43.59 mg/g。在pH为7.31、初始离子浓度为98.82 mg/L、接触时间为126.99 min、DPE投加量为0.12 g/L的最佳条件下,DPE的平衡吸附离子(qe)为48.79 mg/g。
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Statistical analysis for remediation of As(III) ions from water using pristine and derivatized Phyllanthus emblica seed coat
Abstract The aim of this study is to determine the optimal conditions for remediation of As(III) ions from water using adsorbents prepared from the seed coat of pristine Phyllanthus emblica (PPE) and derivatized Phyllanthus emblica (DPE), and were analyzed with the help of Box–Behnken design (BBD) and central composite design (CCD) optimization techniques. pH, initial ion concentration, dosage, and contact time were taken as process parameters while designing the experiment. The desirability factor for both the adsorbents was high as follows: (1.0) for the BBD in comparison to the CCD (0.8). The regression coefficient (R2) for both adsorbents was in the range of 0.993–0.999 for the BBD and 0.965–0.969 for the CCD. The BBD is found to be more suitable for designing experiments, optimization of variables for maximum removal, and estimation of removal percentage in different conditions. The adsorption of ions at equilibrium (qe) was found to be 43.59 mg/g at optimal conditions of pH 7.13, initial concentration of arsenic of 99.02 mg/L, contact time of 105.13 min, and dosage of 0.12 g/L for PPE using the BBD. However, the adsorption of ions at equilibrium (qe) was found to be 48.79 mg/g at optimal conditions of pH 7.31, initial ion concentration of 98.82 mg/L, contact time of 126.99 min, and dosage of 0.12 g/L for DPE using the BBD technique.
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来源期刊
CiteScore
2.30
自引率
6.20%
发文量
136
审稿时长
14 weeks
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