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从废弃菜籽饼中获得的用于去除工业废水中铜（II）和锌（II）的新型分离材料。

New Separation Material Obtained from Waste Rapeseed Cake for Copper(II) and Zinc(II) Removal from the Industrial Wastewater.

作者信息

Mazurek Krzysztof, Drużyński Sebastian, Kiełkowska Urszula, Szłyk Edward

机构信息

Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7 Gagarina Street, 87-100 Toruń, Poland.

出版信息

Materials (Basel). 2021 May 14;14(10):2566. doi: 10.3390/ma14102566.

DOI:10.3390/ma14102566
PMID:34069285
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8156778/
Abstract

Rapeseed cake biochar was produced by pyrolysis at 973.15 K for 2 h, in anoxic conditions. Porous structure, specific surface area and die composition of waste rapeseed cake were studied. The specific surface area of rapeseed cake biochar was 166.99 m·g, which exceeded most other biochars reported, which made it an attractive material during wastewater treatment. The SEM study of the material demonstrated a large number of pores formed on the cell wall, with a pore volume = 0.08 cm·g. The results indicate lower aromaticity and increased polarity of the tested material. The observed H/C ratio of 0.29 is similar for activated carbons. Furthermore, sorption properties of the obtained carbon material in relation to copper(II), zinc(II) and arsenic(III) ions were also studied. Moreover, the impact of parameters such as: sorption time, temperature, adsorbate concentration, sorbent mass and solution pH on the efficiency of the adsorption process of the studied cations was also examined. Sorption studies revealed that the sorbent can be successfully used for the separation of Cu(II) and Zn(II) from technological wastewaters. Rapeseed cake biochar exhibits superior Cu(II) adsorption capacity (52.2 mg·g) with a short equilibrium time (6 h). The experimental data collected show a high selectivity of the obtained carbon material relative to copper(II) and zinc(II) ions in the presence of arsenic(III) ions.

摘要

菜籽饼生物炭是在缺氧条件下于973.15 K热解2 h制得的。研究了废弃菜籽饼的多孔结构、比表面积和化学成分。菜籽饼生物炭的比表面积为166.99 m²·g，超过了报道的大多数其他生物炭，这使其成为废水处理中的一种有吸引力的材料。对该材料的扫描电子显微镜研究表明，细胞壁上形成了大量孔隙，孔体积为0.08 cm³·g。结果表明，测试材料的芳香性较低，极性增加。观察到的0.29的H/C比与活性炭相似。此外，还研究了所得碳材料对铜（II）、锌（II）和砷（III）离子的吸附性能。此外，还考察了吸附时间、温度、吸附质浓度、吸附剂质量和溶液pH值等参数对所研究阳离子吸附过程效率的影响。吸附研究表明，该吸附剂可成功用于从工业废水中分离铜（II）和锌（II）。菜籽饼生物炭表现出优异的铜（II）吸附容量（52.2 mg·g），平衡时间短（6 h）。收集的实验数据表明，在存在砷（III）离子的情况下，所得碳材料对铜（II）和锌（II）离子具有高选择性。

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