利用氧化锌作为光催化剂光催化降解水中的甲胺磷

IF 8 Q1 ENERGY & FUELS
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引用次数: 0

摘要

传统农业和满足粮食需求的需要导致各种杀虫剂的滥用,使其随风和水流散布到生态系统中,造成严重的环境问题。因此,应用有效的技术消除水体中的农药非常重要。在本研究中,以氧化锌为光催化剂的异相光催化技术被用于评估甲胺磷在超纯水和河水制备的污染水中的降解情况。在氧化锌用量为 3 g/L、甲胺磷浓度为 50 mg/L、搅拌转速为 300 rpm、温度为 25 ± 2 °C、pH 值为自然条件下,超纯水和河水中甲胺磷的降解率分别为 86.66 % 和 57.96 %。河水中存在的氯化物、硫酸盐、硝酸盐和亚硝酸盐阴离子可能是导致光催化过程效果下降的原因。最能描述降解过程的数学模型是伪二阶模型和埃洛维奇模型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Photocatalytic degradation of methamidophos in water using zinc oxide as a photocatalyst

Conventional agriculture and the need to satisfy the demand for food, cause different types of pesticides to be used indiscriminately, causing them to be dispersed into ecosystems by wind and water currents, representing a serious environmental problem. For this reason, it is important to apply effective technologies for the elimination of pesticides from water bodies. In the present research, heterogeneous photocatalysis using ZnO as a photocatalyst was applied to evaluate the degradation of methamidophos in contaminated water prepared in ultrapure water and river water. Considering the working parameters of 3 g/L of zinc oxide, a concentration of 50 mg/L of methamidophos, with constant agitation of 300 rpm, temperature 25 ± 2 °C and a natural pH, methamidophos degradation percentages of 86.66 % and 57.96 % were achieved in ultrapure water and river water, respectively. The chloride, sulfates, nitrates, and nitrites anions present in the river water could be responsible for the decrease in the effectiveness of the photocatalytic process. The mathematical models that best describe the degradation process were the pseudo-second order model and the Elovich model.

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来源期刊
Energy nexus
Energy nexus Energy (General), Ecological Modelling, Renewable Energy, Sustainability and the Environment, Water Science and Technology, Agricultural and Biological Sciences (General)
CiteScore
7.70
自引率
0.00%
发文量
0
审稿时长
109 days
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