制革厂皮革抛光飞灰制砖：废物转化为财富的方法

Q1 Environmental Science

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-12-10 DOI:10.1016/j.cscee.2024.101053

Md Abul Hashem, Md Enamul Hasan Zahin, Md Sanaul Haque, Modinatul Maoya, Md Shohag Milu

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引用次数: 0

摘要

皮革抛光粉尘是一种大气污染物。在这项研究中，粘土与皮革抛光粉粉煤灰（LBDFA）按不同比例（0%,4%,8%,12%，16%和20%）混合，制成砖，干燥，并在1000℃的砖场中燃烧。结果表明，12% LBDFA掺入砖的着火失重率为5.65%，面积收缩率为3.96%，吸水率为15.63%，抗压强度为16.74 N/mm2，开花率为零。扫描电镜显微照片描绘了复合材料的微纤维结构，创造了轻质砖。NEN 7345浸出显示浸出金属在标准范围内。砖生产中的LBDFA是管理制革厂固体废物的另一种选择。

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Fabrication of brick from tannery leather buffing fly ash: Waste-to-wealth approach

Micro-fined leather buffing dust is an airborne pollutant. In this study, clay was mixed with leather buffing dust fly ash (LBDFA) in various proportions (0 %, 4 %, 8 %, 12 %, 16 %, and 20 %), fabricated brick, dried, and burned in the brickfield at 1000 °C. Results suggested that 12 % LBDFA incorporated brick exhibited weight loss on ignition (5.65 %), area shrinkage (3.96 %), water absorption (15.63 %), compressive strength (16.74 N/mm²), and efflorescence (nil). SEM micrographs depicted composite's micro-fibrous structure creating lightweight brick. The NEN 7345 leaching showed leached metals within standard range. LBDFA in brick production is an alternative option for managing solid waste in tannery.

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