Biomass waste-enabled porous raw clay comp for efficient pollutant removal

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Applied Surface Science Pub Date : 2025-06-18 DOI:10.1016/j.apsusc.2025.163852

Tiantian Zhang, Renlu Yuan, Song Yin, Sixiao Wang, Yinfeng Yu, Zepeng Zhang, Junming Geng

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Abstract

This study presents the fabrication of novel porous composite spheres (PCS) using biomass waste (maple leaf powder) and Linze palygorskite (LZ) via a polyvinyl alcohol-formaldehyde process. Material characterization reveals that the composite spheres exhibit a bulk density of 1.14 g·mL⁻¹, a porosity of 46.31 %, a particle strength of 218.40 N, and a loss rate of 2.09 %, with significantly improved pore structures compared to the biomass-free control (CS). At the optimal mass ratio of LZ to maple leaf powder (9: 1), PCS achieves high adsorption capacities for methylene blue, crystal violet, Pb²⁺, Ni²⁺, ciprofloxacin, and tetracycline hydrochloride, reaching 121.40, 110.40, 49.32, 33.87, 99.09, and 113.13 mg·g⁻¹, respectively—markedly higher than those of CS. After six recycling cycles, the adsorption capacities retain 72.87 %–97.86 % of their initial values. The adsorption mechanism highlights that the organic components of biomass enhance the removal of organic pollutants via π-π stacking interactions. This work provides a novel pathway for developing low-cost and high-efficiency adsorbents for wastewater treatment.

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生物质废弃物使多孔原料粘土有效去除污染物

以生物质废弃物（枫叶粉）和林泽坡缕石（LZ）为原料，采用聚乙烯醇-甲醛法制备了新型多孔复合球（PCS）。材料表征表明，复合球的体积密度为1.14 g·mL−1，孔隙率为46.31 %，颗粒强度为218.40 N，损失率为2.09 %，与无生物质对照（CS）相比，孔隙结构显著改善。在LZ与枫叶粉的最佳质量比（9:1）下，PCS对亚甲基蓝、结晶紫、Pb2+、Ni2+、环丙沙星和盐酸四环素的吸附量分别达到121.40、110.40、49.32、33.87、99.09和113.13 mg·g−1，显著高于CS。经过6次循环后，吸附量保持在初始值的72.87 % ~ 97.86 %。吸附机理表明，生物质的有机组分通过π-π堆积相互作用增强了对有机污染物的去除。本研究为开发低成本、高效的废水处理吸附剂提供了一条新的途径。

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来源期刊

Applied Surface Science 工程技术-材料科学：膜

CiteScore

12.50

自引率

7.50%

发文量

3393

审稿时长

67 days

期刊介绍： Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.