新型米糠蛋白-铈配合物的合成与表征及其对废水中有机磷农药残留的去除。
Synthesis and characterization of a novel rice bran protein-cerium complex for the removal of organophosphorus pesticide residues from wastewater.
机构信息
College of Grain Science and Technology, Shenyang Normal University, 253 Huanghe North Street, Huanggu District, Shenyang 110034, China.
College of Grain Science and Technology, Shenyang Normal University, 253 Huanghe North Street, Huanggu District, Shenyang 110034, China; Department of Food Science and Technology, Faculty of Agriculture, Assiut University, Assiut 71526, Egypt.
出版信息
Food Chem. 2020 Aug 1;320:126604. doi: 10.1016/j.foodchem.2020.126604. Epub 2020 Mar 16.
The removal of organophosphorus pesticides residues from wastewater of fruits and vegetables processing as well as other agricultural processes by a low-cost, environment-friendly, and efficient strategy is necessary. In this study, rice bran protein (RBP) was cross-linked with ceric ammonium nitrate (CAN). The results showed that the cross-linking process generated new functional groups and significantly enhanced the chemical reactivity and adsorption capacity of RBP. The RBPC showed rough and porous surface structure compared with smooth surface structure for RBP. In addition, greatest adsorption capacity of 193.0 mg/g and omethoate removal efficiency of 72.1% was achieved, and the results fitted well with Langmuir isotherm and pseudo-second order models. Moreover, Omethoate (5 mg/L) removal efficiency maintained over 60% after 5 cycles of RBPC usage. Therefore, the obtained RBPC complex can be suggested as an efficient adsorbent for the removal of pesticide residues from wastewater.
从果蔬加工和其他农业过程废水中去除有机磷农药残留需要一种低成本、环保且高效的策略。在本研究中，米糠蛋白（RBP）与硝酸铈铵（CAN）交联。结果表明，交联过程产生了新的功能基团，显著提高了 RBP 的化学反应性和吸附能力。与 RBP 的光滑表面结构相比，RBPC 呈现出粗糙多孔的表面结构。此外，RBPC 实现了 193.0mg/g 的最大吸附容量和 72.1%的氧乐果去除效率，且结果与朗缪尔等温线和拟二级动力学模型拟合良好。此外，RBPC 使用 5 次后，5mg/L 的氧乐果去除效率仍保持在 60%以上。因此，所得的 RBPC 复合物可用作去除废水中农药残留的有效吸附剂。
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