期刊论文

中文

工业水处理

1005-829X

2022

42

3

90-97

10.19965/j.cnki.iwt.2021-0670

国家自然科学基金项目（42071122）；

本校为第一机构

草甘膦是造成水体富营养化的典型有机磷。通过高温掺杂合成改性牡蛎壳粉，对模拟草甘膦废水进行吸附研究。结果表明，改性牡蛎壳粉最优制备条件为：煅烧温度900 ℃、过筛粒径120目（125μm）、淀粉用量（淀粉质量/牡蛎壳粉质量）15%、煅烧时间为2.5 h，并进行碱处理。XRD表明优化制备后的改性牡蛎粉表面成分为CaCO3和Ca（OH）2，表面分析结果表明改性牡蛎壳粉比表面积增大21.3%，红外光谱分析表明优化制备后的改性牡蛎壳粉出现羟基。改性牡蛎壳粉吸附草甘膦过程符合准二级动力学模型和Langmuir模型，最大吸附量为66.06 mg/g。以上研究结果可为有机磷废水处理提供参考。

Glyphosate is a typical organic phosphorus that causes eutrophication of water.The modified oyster shell powder was synthesized by high temperature doping.The adsorption of simulated glyphosate wastewater by modified oyster shell powder was studied.The results showed that the optimum preparation conditions were as follows:calcination temperature 900℃,sieved particle size 120 mesh(125μm),starch dosage(starch quality/oyster shell powder quality)15%,calcination time 2.5 h and alkali treatment.X‒ray diffraction showed that the surface compositio...