Synthesis of oxygen‐rich functional groups biochar for high‐efficiency adsorption of herbicide and as a potential carrier for pH‐responsive slow release

IF 1.8 4区工程技术 Q3 Chemical Engineering

Asia-Pacific Journal of Chemical Engineering Pub Date : 2024-07-01 DOI:10.1002/apj.3113

Yufeng Chen, Fangge Zhu, Sijie Jiang, Guorong Shi, Mei'e Zhong

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引用次数: 0

Abstract

To improve the utilization rate of herbicides and reduce their environmental residues, it is urgent to develop a simple and low‐cost method to prepare slow‐release pesticides. In this study, a biochar (280CPFe) with a high surface area and rich oxygen‐containing functional groups was synthesized by low temperature (280°C) boiling strategy, which was used as a carrier to prepare pH‐responsive slow‐release herbicide. The obtained biochar has a high adsorption capacity of 153.59 mg·g−1 for quinclorac (QNC). The release rates of QNC‐280CPFe are 21%, 56%, and 90% at the initial pH of 3, 5, and 11, respectively. The controlled release behavior of QNC‐280CPFe is related to its adsorption mechanism, in which the pore filling and functional group adsorption are mainly responsible for the adsorption of QNC on 280CPFe. Compared with QNC alone, QNC‐280CPFe slow‐release herbicide has a good control effect on Barnyard grass but does not affect the normal growth of rice. Therefore, this study provides a simple, low‐cost cost, and environmentally friendly biochar carrier for preparing slow‐release herbicide, improving its utilization rate and reducing its environmental pollution risk.

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合成富氧功能基团生物炭，用于高效吸附除草剂并作为潜在的 pH 值响应型缓释载体

为提高除草剂的利用率，减少其环境残留，迫切需要开发一种简单、低成本的缓释农药制备方法。本研究采用低温（280℃）沸腾法合成了一种具有高比表面积和丰富含氧官能团的生物炭（280CPFe），并以此为载体制备了 pH 值响应型缓释除草剂。获得的生物炭对喹草酸（QNC）的吸附容量高达 153.59 mg-g-1。在初始 pH 值为 3、5 和 11 时，QNC-280CPFe 的释放率分别为 21%、56% 和 90%。QNC-280CPFe 的控释行为与其吸附机制有关，其中孔隙填充和官能团吸附是 QNC 吸附在 280CPFe 上的主要原因。与单独使用 QNC 相比，QNC-280CPFe 缓释除草剂对稗草具有良好的控制效果，但不影响水稻的正常生长。因此，该研究为制备缓释除草剂提供了一种简单、低成本、环保的生物炭载体，提高了除草剂的利用率，降低了环境污染风险。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Asia-Pacific Journal of Chemical Engineering 工程技术-工程：化工

CiteScore

3.50

自引率

11.10%

发文量

111

审稿时长

2.8 months

期刊介绍： Asia-Pacific Journal of Chemical Engineering is aimed at capturing current developments and initiatives in chemical engineering related and specialised areas. Publishing six issues each year, the journal showcases innovative technological developments, providing an opportunity for technology transfer and collaboration. Asia-Pacific Journal of Chemical Engineering will focus particular attention on the key areas of: Process Application (separation, polymer, catalysis, nanotechnology, electrochemistry, nuclear technology); Energy and Environmental Technology (materials for energy storage and conversion, coal gasification, gas liquefaction, air pollution control, water treatment, waste utilization and management, nuclear waste remediation); and Biochemical Engineering (including targeted drug delivery applications).