Optimising and up-scaling residual grassland biomass use through sequential base-acid conditioning

IF 7.8 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology Pub Date : 2026-03-01 Epub Date: 2025-12-12 DOI:10.1016/j.fuproc.2025.108380

Hafiz Ali Raza , Viktoria Scheff , Matthias Karl von Ahn , David Laner , Kathrin Stenchly , Michael Wachendorf , Korbinian Kaetzl

{"title":"Optimising and up-scaling residual grassland biomass use through sequential base-acid conditioning","authors":"Hafiz Ali Raza , Viktoria Scheff , Matthias Karl von Ahn , David Laner , Kathrin Stenchly , Michael Wachendorf , Korbinian Kaetzl","doi":"10.1016/j.fuproc.2025.108380","DOIUrl":null,"url":null,"abstract":"<div><div>The conversion of species-rich, structurally complex grassland biomass from landscape management into high-quality solid fuel and biogas poses significant environmental and technological challenges due to its high mineral content and low energy density. This study explores an advanced adaptation of the Integrated Generation of Solid Fuel and Biogas from Biomass (IFBB) process, incorporating a sequential base–acid treatment (IFBB-B/A) with sodium hydroxide and acetic acid, tailored for such feedstocks. Optimised through systematic lab-scale trials, the improved IFBB-B/A process demonstrated superior enrichment of energy-relevant constituents (cellulose +54 %, volatile matter +13 %, carbon +6.4 %) compared to conventional IFBB, enhancing higher heating value (+5.5 %) and significantly reducing ash content (−81 %). Upon scaling to industrial screw-press equipment, IFBB-B/A maintained robust performance, achieving high ash reduction (−71 %), improved thermochemical fuel quality, reduced slagging potential (slagging index reduced from 5.2 to 2.1), and increased sulphur-to‑chlorine ratio (from 1.9 to 13.5), thus minimising corrosion risk. Press fluid from industrial-scale IFBB-B/A yielded over 500 Ln CH₄/kgVS and methane concentrations above 85 vol%, underscoring the process's capability for efficient production of high-quality biogas and solid fuels from challenging biomass sources. The findings confirm the potential role of species-rich grassland biomass for decentralised provision of renewable energy.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"281 ","pages":"Article 108380"},"PeriodicalIF":7.8000,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fuel Processing Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0378382025002048","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/12/12 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}

引用次数: 0

Abstract

The conversion of species-rich, structurally complex grassland biomass from landscape management into high-quality solid fuel and biogas poses significant environmental and technological challenges due to its high mineral content and low energy density. This study explores an advanced adaptation of the Integrated Generation of Solid Fuel and Biogas from Biomass (IFBB) process, incorporating a sequential base–acid treatment (IFBB-B/A) with sodium hydroxide and acetic acid, tailored for such feedstocks. Optimised through systematic lab-scale trials, the improved IFBB-B/A process demonstrated superior enrichment of energy-relevant constituents (cellulose +54 %, volatile matter +13 %, carbon +6.4 %) compared to conventional IFBB, enhancing higher heating value (+5.5 %) and significantly reducing ash content (−81 %). Upon scaling to industrial screw-press equipment, IFBB-B/A maintained robust performance, achieving high ash reduction (−71 %), improved thermochemical fuel quality, reduced slagging potential (slagging index reduced from 5.2 to 2.1), and increased sulphur-to‑chlorine ratio (from 1.9 to 13.5), thus minimising corrosion risk. Press fluid from industrial-scale IFBB-B/A yielded over 500 Ln CH₄/kgVS and methane concentrations above 85 vol%, underscoring the process's capability for efficient production of high-quality biogas and solid fuels from challenging biomass sources. The findings confirm the potential role of species-rich grassland biomass for decentralised provision of renewable energy.

查看原文本刊更多论文

通过序贯酸碱调节优化和扩大草地剩余生物量利用

由于高矿物质含量和低能量密度，将物种丰富、结构复杂的草地生物质从景观管理转化为高质量的固体燃料和沼气带来了重大的环境和技术挑战。本研究探索了生物质固体燃料和沼气综合生产（IFBB）工艺的高级适应性，结合了为此类原料量身定制的氢氧化钠和乙酸的顺序碱酸处理（IFBB- b / a）。经过系统的实验室规模试验优化，改进的IFBB- b /A工艺与传统IFBB相比，具有更高的能量相关成分（纤维素+ 54%，挥发物+ 13%，碳+ 6.4%）富集，提高了热值（+ 5.5%），显著降低了灰分含量（- 81%）。在扩展到工业螺杆压机设备后，IFBB-B/A保持了强大的性能，实现了高灰分减少（- 71%），改善了热化学燃料质量，降低了结渣潜力（结渣指数从5.2降至2.1），提高了硫氯比（从1.9降至13.5），从而最大限度地降低了腐蚀风险。工业级IFBB-B/A的压榨液产量超过500 Ln CH₄/kgVS，甲烷浓度超过85 vol%，强调了该工艺从具有挑战性的生物质资源中高效生产高质量沼气和固体燃料的能力。这些发现证实了物种丰富的草地生物量在分散提供可再生能源方面的潜在作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Fuel Processing Technology 工程技术-工程：化工

CiteScore

13.20

自引率

9.30%

发文量

398

审稿时长

26 days

期刊介绍： Fuel Processing Technology (FPT) deals with the scientific and technological aspects of converting fossil and renewable resources to clean fuels, value-added chemicals, fuel-related advanced carbon materials and by-products. In addition to the traditional non-nuclear fossil fuels, biomass and wastes, papers on the integration of renewables such as solar and wind energy and energy storage into the fuel processing processes, as well as papers on the production and conversion of non-carbon-containing fuels such as hydrogen and ammonia, are also welcome. While chemical conversion is emphasized, papers on advanced physical conversion processes are also considered for publication in FPT. Papers on the fundamental aspects of fuel structure and properties will also be considered.