Effective Removal of Microplastic Particles from Wastewater Using Hydrophobic Bio-Substrates

Pollutants Pub Date : 2024-05-06 DOI:10.3390/pollutants4020015

K. Bhagwat, D. Rodrigue, L. Romero-Zerón

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Abstract

The rapid increase in soil and water pollution is primarily attributed to anthropogenic factors, notably the mismanagement of post-consumer plastics on a global scale. This exploratory research design evaluated the effectiveness of natural hydrophobic cattail (Typha Latifolia) fibres (CFs) as bio-adsorbents of microplastic particles (MPPs) from wastewater. The study investigates how the composition of the adsorption environment affects the adsorption rate. Straightforward batch adsorption tests were conducted to evaluate the “spontaneous” sorption of MPPs onto CFs. Five MPP materials (PVC, PP, LDPE, HDPE, and Nylon 6) were evaluated. Industrial wastewater (PW) and Type II Distilled Water (DW) were employed as adsorption environments. The batch test results show that CFs are effective in removing five MPP materials from DW and PW. However, a higher removal percentage of MPPs was observed in PW, ranging from 89% to 100% for PVC, PP, LDPE, and HDPE, while the adsorption of Nylon 6 increased to 29.9%, a removal increase of 50%. These findings indicate that hydrophobic interactions drive the “spontaneous and instantaneous” adsorption process and that adjusting the adsorption environment can effectively enhance the MPP removal rate. This research highlights the significant role that bio-substrates can play in mitigating environmental pollution, serving as efficient, sustainable, non-toxic, biodegradable, low-cost, and reliable adsorbents for the removal of MPPs from wastewaters.

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利用疏水性生物基质有效去除废水中的微塑料颗粒

土壤和水污染的快速增长主要归咎于人为因素，特别是全球范围内对消费后塑料的不当管理。本探索性研究设计评估了天然疏水性香蒲（Typha Latifolia）纤维（CFs）作为生物吸附剂对废水中微塑料颗粒（MPPs）的吸附效果。该研究探讨了吸附环境的组成如何影响吸附率。研究人员进行了简单的批量吸附试验，以评估 MPPs 在 CFs 上的 "自发 "吸附情况。对五种 MPP 材料（PVC、PP、LDPE、HDPE 和尼龙 6）进行了评估。吸附环境为工业废水（PW）和二类蒸馏水（DW）。批量试验结果表明，CF 能有效去除 DW 和 PW 中的五种 MPP 材料。然而，在 PW 中观察到的 MPPs 去除率更高，PVC、PP、LDPE 和 HDPE 的去除率从 89% 到 100% 不等，而尼龙 6 的吸附率增加到 29.9%，去除率增加了 50%。这些研究结果表明，疏水相互作用推动了 "自发和瞬时 "吸附过程，调整吸附环境可有效提高 MPP 去除率。这项研究凸显了生物基质在减轻环境污染方面的重要作用，可作为高效、可持续、无毒、可生物降解、低成本和可靠的吸附剂，用于去除废水中的 MPPs。

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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Pollutants

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