Adsorptive Removal of Aqueous Phase Copper (Cu~(2+)) and Nickel (Ni~(2+)) Metal Ions by Synthesized Biochar-Biopolymeric Hybrid Adsorbents and Process Optimization by Response Surface Methodology (RSM)

Biswas Subrata; Meikap Bhim Charan; Sen Tushar Kanti

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Adsorptive Removal of Aqueous Phase Copper (Cu~(2+)) and Nickel (Ni~(2+)) Metal Ions by Synthesized Biochar-Biopolymeric Hybrid Adsorbents and Process Optimization by Response Surface Methodology (RSM)

机译：合成生物炭-生物聚合物杂化吸附剂对水相铜（Cu〜（2+））和镍（Ni〜（2+））金属离子的吸附去除及响应面法（RSM）的工艺优化

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This research work is focused on the synthesis, characterization, and application of cost-effective biochar-biopolymeric hybrid adsorbents from waste agricultural biomass and sodium alginate. The adsorbents were characterized by BET (Brunauer-Emmett-Teller), FTIR (Fourier transform infrared), XRD (X-ray diffraction), FESEM (field emission scanning electron microscopy), and bulk density measurement. The performance of the synthesized hybrid adsorbents has been tested for the removal of aqueous phase Ni2+ and Cu2+ metal ions at a concentration range of 25 to 100 mg/L, adsorbent dose of 1-3 g/L, and system temperature of 298-308 K, respectively. The effect of various physicochemical process parameters such as solution pH, adsorbent dose, initial metal ion concentration, temperature, and presence of salts on metal ion adsorption has been studied here, and experimental process parameters are being optimized by response surface methodology (RSM). The model was fitted well with the experimental data. Various kinetic models, namely, pseudo-first-order, pseudo-second-order, and Weber-Morris, have been fitted with batch experimental data, and the mechanism of adsorption has been identified. The maximum Langmuir monolayer adsorption capacity for Cu2+ and Ni2+ were 112 and 156 mg/g, respectively, which are comparative to other published adsorbent's capacity data under similar experimental conditions. Thermodynamic parameter studies showed that the system was endothermic and spontaneous in nature.

机译：这项研究工作的重点是从废弃农业生物质和海藻酸钠中合成，表征和应用具有成本效益的生物炭-生物聚合物杂化吸附剂。吸附剂的特征在于BET（Brunauer-Emmett-Teller），FTIR（傅立叶变换红外），XRD（X射线衍射），FESEM（场发射扫描电子显微镜）和堆积密度测量。测试了合成杂化吸附剂的性能，可去除浓度范围为25至100 mg / L，吸附剂量为1-3 g / L，系统温度为298-308的水相Ni2 +和Cu2 +金属离子。分别为K。本文研究了各种物理化学过程参数的影响，例如溶液的pH，吸附剂剂量，初始金属离子浓度，温度和盐的存在对金属离子吸附的影响，并且通过响应面方法（RSM）对实验过程参数进行了优化。该模型与实验数据拟合得很好。各种动力学模型，即伪一阶，伪二阶和Weber-Morris，已拟合批处理实验数据，并已确定了吸附机理。 Langmuir对Cu2 +和Ni2 +的最大单层吸附容量分别为112和156 mg / g，这与在相似实验条件下其他已发表的吸附剂的容量数据相比。热力学参数研究表明该系统是吸热的，并且是自然发生的。

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来源
《Water, Air, and Soil Pollution》 |2019年第8期|197.1-197.23|共23页
作者
Biswas Subrata; Meikap Bhim Charan; Sen Tushar Kanti;
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作者单位

Indian Inst Technol Dept Chem Engn Kharagpur 721302 W Bengal India|WA Sch Mines Minerals Energy & Chem Engn GPO Box U1987 Perth WA 6845 Australia;

ECU Sch Engn Joondalup WA 6027 Australia|WA Sch Mines Minerals Energy & Chem Engn GPO Box U1987 Perth WA 6845 Australia;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Biochar-biopolymeric hybrid adsorbent; Heavy metal ion adsorption; Adsorption kinetics; Isotherm; Optimization;

机译：生物炭-生物聚合物杂化吸附剂;重金属离子吸附;吸附动力学;等温线优化;

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机译：将每种金属离子的合成浸出溶液分离有两种组分（Mn 2 + / sop>，Cu 2 + ），（Mn 2 + / sup>，fe 2 + ），（Fe 3 + ，cu 2 + ），（ni 2 + ，CO ^{2 + ）}

Adsorptive Removal of Aqueous Phase Copper (Cu~(2+)) and Nickel (Ni~(2+)) Metal Ions by Synthesized Biochar-Biopolymeric Hybrid Adsorbents and Process Optimization by Response Surface Methodology (RSM)

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