Porous honeycomb cork biochar for efficient and highly selective removal of phosphorus from wastewater

IF 13.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Biochar Pub Date : 2023-12-07 DOI:10.1007/s42773-023-00289-9

Xiuxiu Jia, Tao Yin, Yin Wang, Shuxing Zhou, Xue Zhao, Wentong Chen, Guangzhi Hu

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Abstract

In this study, an adsorbent (LCB) with rich honeycomb structure was prepared from cork waste generated from furniture factories for efficient adsorption of excess phosphorus (P) from wastewater. This adsorbent was successfully prepared in only one step, in situ precipitation method, which greatly simplified the synthesis process. Kinetic studies showed that when the initial concentration (C₀) of wastewater was 10 mg P L⁻¹, the P in the water could be completely adsorbed within 20 min. The adsorption efficiency of phosphorus was significantly improved compared to previous studies. When the C₀ of pollutant and the dosage of LCB were 20 mg P L⁻¹ and 0.5 g L⁻¹, respectively, the removal rate of P exceeded 99% in the pH range of 3–10, which indicates the wide applicability of LCB. In addition, the P adsorption capacity of LCB was 82.4% of its initial value after nine adsorption–desorption cycles, indicating that LCB has a high stability and can be widely used in different water environments. Therefore, LCB is a promising material for the treatment of P-containing wastewater.

Graphical Abstract

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用于高效和高选择性去除废水中磷的多孔蜂窝软木生物炭

本研究利用家具厂产生的软木废料制备了一种具有丰富蜂窝结构的吸附剂（LCB），用于高效吸附废水中过量的磷（P）。该吸附剂的制备仅需一步，即原位沉淀法，大大简化了合成过程。动力学研究表明，当废水的初始浓度（C0）为 10 mg P L-1 时，水中的磷可在 20 分钟内被完全吸附。与之前的研究相比，磷的吸附效率明显提高。当污染物的 C0 和 LCB 的用量分别为 20 mg P L-1 和 0.5 g L-1 时，在 pH 值为 3-10 的范围内，P 的去除率超过 99%，这表明 LCB 具有广泛的适用性。此外，经过九次吸附-解吸循环后，LCB 对 P 的吸附量为初始值的 82.4%，表明 LCB 具有较高的稳定性，可广泛应用于不同的水环境中。因此，LCB 是一种很有前景的处理含 P 废水的材料。

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来源期刊

Biochar Multiple-

CiteScore

18.60

自引率

10.20%

发文量

期刊介绍： Biochar stands as a distinguished academic journal delving into multidisciplinary subjects such as agronomy, environmental science, and materials science. Its pages showcase innovative articles spanning the preparation and processing of biochar, exploring its diverse applications, including but not limited to bioenergy production, biochar-based materials for environmental use, soil enhancement, climate change mitigation, contaminated-environment remediation, water purification, new analytical techniques, life cycle assessment, and crucially, rural and regional development. Biochar publishes various article types, including reviews, original research, rapid reports, commentaries, and perspectives, with the overarching goal of reporting significant research achievements, critical reviews fostering a deeper mechanistic understanding of the science, and facilitating academic exchange to drive scientific and technological development.