生物炭减轻了锑对甲烷生成活动的不利影响:作为甲烷生成促进剂的作用。

IF 2.5 4区 环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL
Ana K Valenzuela-Cantú, Marina M Atilano-Camino, Francisco J Cervantes, Aurora M Pat Espadas
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引用次数: 0

摘要

锑广泛应用于能源领域,但其毒性和污染问题令人担忧,尤其是在厌氧环境中,因为人们对锑对微生物活动的影响知之甚少。生物炭等新兴疗法在土壤和水处理方面大有可为。本研究以厌氧污泥为接种物,乳酸盐为碳源,研究了生物炭在 Sb(V)和 Sb(III)压力下对产甲烷活动的影响。引入不同浓度(5-80 毫克/升)的 Sb(III)和 Sb(V),同时加入或不加入生物炭,监测沼气产量、pH 值、Sb 和乳酸盐水平随时间的变化。使用 Sb(V) 的实验还包括计算质量平衡和电子分布。实验结果表明,生物炭具有以下显著优势:在添加了 Sb(III)的条件下,生物炭显著提高了 COD 去除率和沼气产量,分别提高了 5 倍和 2 倍。生物炭对 Sb(III)的去除率高达 99%,而在 Sb(V)浓度较高的情况下,生物炭对沼气生产的不利影响降低了 96%。对于两种锑,生物质的吸附能力(60.96 毫克 Sb(III)/gVSS 和 22.4 毫克 Sb(V)/gVSS )优于生物炭(3.33 毫克 Sb(III)/g 和 1.61 毫克 Sb(V)/g )。这项研究强调了生物炭在帮助从液相中去除锑的同时,还能减轻金属类物质对甲烷生成活性的影响的潜力,这对补救和甲烷生产增强战略具有重要意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Biochar mitigates the adverse effects of antimony on methanogenic activity: role as methane production-enhancer.

Antimony, extensively used in energy applications, poses toxicity and contamination concerns, especially in anaerobic environments where its impact on microbial activity is poorly understood. Emerging remedies, like biochar, show promise in soil and water treatment. This study investigates biochar's influence on methanogenic activity under Sb(V) and Sb(III) stress using anaerobic sludge as inoculum and lactate as the carbon source. Sb(III) and Sb(V) were introduced at varied concentrations (5-80 mg/L), with or without biochar, monitoring changes in biogas production, pH, Sb, and lactate levels over time. Experiments with Sb(V) also involved calculating mass balance and electron distribution. Results showcased the following significant enhancements: biochar notably improved COD removal and biogas production in Sb(III) spiked conditions, up to 5-fold and 2-fold increases, respectively. Sb(III) removal reached up to 99% with biochar, while in high Sb(V) concentrations, biochar reduced the adverse effect on biogas production by 96%. Adsorption capacities favored biomass (60.96 mg Sb(III)/gVSS, and 22.4 mg Sb(V)/gVSS) over biochar (3.33 mg Sb(III)/g, and 1.61 mg Sb(V)/g) for both Sb species. This study underscores biochar's potential to mitigate metalloid impact on methanogenic activity while aiding Sb removal from liquid phase, suggesting promising implications for remediation and methane production enhancement strategies.

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来源期刊
Water Science and Technology
Water Science and Technology 环境科学-工程:环境
CiteScore
4.90
自引率
3.70%
发文量
366
审稿时长
4.4 months
期刊介绍: Water Science and Technology publishes peer-reviewed papers on all aspects of the science and technology of water and wastewater. Papers are selected by a rigorous peer review procedure with the aim of rapid and wide dissemination of research results, development and application of new techniques, and related managerial and policy issues. Scientists, engineers, consultants, managers and policy-makers will find this journal essential as a permanent record of progress of research activities and their practical applications.
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