Near Infrared Spectroscopy: Rapid and Simultaneous Approach to Predict the Fixed Carbon, Volatile Matter and Ash Contents in Biochar Produced from Agricultural Residues

IF 1.3 Q2 AGRICULTURE, MULTIDISCIPLINARY

Acta Technologica Agriculturae Pub Date : 2022-03-01 DOI:10.2478/ata-2022-0001

A. A. Munawar, Devianti, P. Satriyo, S. A. Bahari

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引用次数: 2

Abstract

Abstract Presented paper aimed to employ the near infrared spectroscopy (NIRS) as a rapid and simultaneous method for quality assessment of biochar samples made of agricultural waste materials (chatter bamboo; firewood; coconut shell). Spectral data were obtained in the wavelength range of 1000–2500 nm, while actual fixed carbon, volatile matter and ash contents were observed using standard chemical analysis. Moreover, prediction models were established using two different regression approaches: principal component regression and partial least square regression. Prediction performances were evaluated by assessment of several statistical indicators, such as correlation coefficient and ratio of prediction to deviation index. The results showed that PLS generated a better prediction performance with maximum r coefficient and RPD index – 0.89 and 2.26 for fixed carbon; 0.93 and 2.84 for volatile matter; 0.90 and 2.30 for ash content. Based on the results acquired, it can be concluded that NIRS is usable for the purposes of a rapid and simultaneous approach to biochar quality determination.

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近红外光谱:快速、同步预测农业废弃物生物炭中固定碳、挥发物和灰分含量的方法

摘要本文旨在利用近红外光谱（NIRS）作为一种快速、同时评估农业废弃物（竹木、木柴、椰子壳）生物炭样品质量的方法。在1000–2500 nm的波长范围内获得光谱数据，同时使用标准化学分析观察实际固定碳、挥发性物质和灰分含量。此外，使用两种不同的回归方法建立了预测模型：主成分回归和偏最小二乘回归。预测性能通过评估几个统计指标来评估，如相关系数和预测与偏差指数的比率。结果表明，PLS具有较好的预测性能，固定碳的最大r系数和RPD指数分别为0.89和2.26；挥发性物质分别为0.93和2.84；灰分分别为0.90和2.30。基于所获得的结果，可以得出结论，近红外光谱可用于快速、同时测定生物炭质量的目的。

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来源期刊

Acta Technologica Agriculturae AGRICULTURE, MULTIDISCIPLINARY-

CiteScore

2.50

自引率

28.60%

发文量

审稿时长

18 weeks

期刊介绍： Acta Technologica Agriculturae is an international scientific double-blind peer reviewed journal focused on agricultural engineering. The journal is multidisciplinary and publishes original research and review papers in engineering, agricultural and biological sciences, and materials science. Aims and Scope Areas of interest include but are not limited to: agricultural and biosystems engineering; machines and mechanization of agricultural production; information and electrical technologies; agro-product and food processing engineering; physical, chemical and biological changes in the soil caused by tillage and field traffic, soil working machinery and terramechanics; renewable energy sources and bioenergy; rural buildings; related issues from applied physics and chemistry, ecology, economy and energy.