Utilization of Biomass Waste at Water Treatment

IF 3.6 Q2 ENVIRONMENTAL SCIENCES

Resources Pub Date : 2024-03-08 DOI:10.3390/resources13030037

I. Cansado, Pedro Francisco Geraldo, P. Mourão, J. Castanheiro, E. P. Carreiro, Suhas

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引用次数: 0

Abstract

This work presents some preliminary results on the direct use of untreated biomass from agricultural activities as adsorbents for water treatment. Waste was also used to produce activated carbons (ACs) by chemical activation with KOH. The efficacy of agricultural waste such as stubble, sawdust from Teak (Tectona Grandis), fibers from Imbondeiro (Adansonia digitata L.), bamboo flowers, and other regional plants were tested on methylene blue (MB) removal from the aqueous phase. Adsorption studies were conducted in a batch system and the influence of kinetics, pH, and temperature was evaluated. The adsorption performance of the natural adsorbents was significantly high concerning MB. In particular, Imbondeiro presented a maximum removal capacity of 188.3 mg per gram. This amount was similar to or even higher than the values obtained on ACs produced by their predecessors at 873 K. The studies were finished by constructing slow filters containing natural adsorbents or ACs. The maximum amounts of MB removed on a continuous flux were lower than those obtained for a diversity of untreated biomass types on a batch system. However, these amounts were comparable to the published results obtained on a diversity of untreated biomasses in batch mode.

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在水处理中利用生物废料

这项工作介绍了直接利用农业活动产生的未经处理的生物质作为水处理吸附剂的一些初步结果。此外，还利用废物通过 KOH 化学活化生产活性炭 (AC)。测试了农业废弃物（如秸秆、柚木（Tectona Grandis）锯末、英邦黛罗（Adansonia digitata L.）纤维、竹花和其他地区植物）对从水相中去除亚甲基蓝（MB）的功效。在批处理系统中进行了吸附研究，并评估了动力学、pH 值和温度的影响。天然吸附剂对甲基溴的吸附性能明显较高。特别是，Imbondeiro 的最大去除能力为每克 188.3 毫克。研究是通过建造含有天然吸附剂或 AC 的慢速过滤器完成的。连续通量去除的甲基溴最大数量低于批量系统中各种未经处理的生物质类型所获得的数量。不过，这些数量与已公布的在批处理模式下对各种未经处理的生物质所取得的结果相当。

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

Resources Environmental Science-Nature and Landscape Conservation

CiteScore

7.20

自引率

6.10%

发文量

审稿时长

11 weeks

期刊介绍： Resources (ISSN 2079-9276) is an international, scholarly open access journal on the topic of natural resources. It publishes reviews, regular research papers, communications and short notes, and there is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and methodical details must be provided so that the results can be reproduced. There are, in addition, unique features of this journal: manuscripts regarding research proposals and research ideas will be particularly welcomed, electronic files or software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Subject Areas: natural resources, water resources, mineral resources, energy resources, land resources, plant and animal resources, genetic resources, ecology resources, resource management and policy, resources conservation and recycling.