Terahertz-based identification of waste paper for improved recycling in Japan

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management Pub Date : 2025-04-26 DOI:10.1016/j.wasman.2025.114795

Dai Otsuka , Asami Kawaguchi , Ayaka Abe , Shiho Sasaki , Yusuke Yoshimura , Iori Tomoda , Tadao Tanabe

引用次数: 0

Abstract

The identification of different types of wastepaper is important during recycling. In this study, we demonstrate the effectiveness of nondestructive diagnostic testing using terahertz waves. Seven types of paper, including contraband paper, were irradiated with terahertz waves of multiple frequencies over a wide bandwidth, and their transmission characteristics evaluated and contrasted. The experimental results show a negative correlation between the basis weight of the samples and the transmittance of paper pulp, which allows to identification of paper pulp types. These results suggest that terahertz waves can be an effective method for identifying different types of paper pulp. Based on these results, we believe that Terahertz transmission measurements can significantly contribute to the improved recycling of recovered paper resources.

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基于太赫兹的废纸识别技术促进日本废纸的回收利用

在回收过程中，识别不同类型的废纸是很重要的。在这项研究中，我们证明了使用太赫兹波的无损诊断测试的有效性。对包括违禁品纸在内的七种纸张进行了宽频带内多频率太赫兹波照射，并对其传输特性进行了评估和对比。实验结果表明，样品的基重与纸浆透光率呈负相关关系，可用于纸浆种类的鉴别。这些结果表明，太赫兹波可以作为识别不同类型纸浆的有效方法。基于这些结果，我们相信太赫兹传输测量可以显著促进回收纸张资源的回收利用。

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

Waste management 环境科学-工程：环境

CiteScore

15.60

自引率

6.20%

发文量

492

审稿时长

39 days

期刊介绍： Waste Management is devoted to the presentation and discussion of information on solid wastes,it covers the entire lifecycle of solid. wastes. Scope: Addresses solid wastes in both industrialized and economically developing countries Covers various types of solid wastes, including: Municipal (e.g., residential, institutional, commercial, light industrial) Agricultural Special (e.g., C and D, healthcare, household hazardous wastes, sewage sludge)