A comparative study on valuable products: bio-oil, biochar, non-condensable gases from pyrolysis of agricultural residue
- PDF / 2,413,128 Bytes
- 19 Pages / 595.276 x 790.866 pts Page_size
- 112 Downloads / 176 Views
ORIGINAL ARTICLE
A comparative study on valuable products: bio‑oil, biochar, non‑condensable gases from pyrolysis of agricultural residues Kedar Sahoo1 · Ankit Kumar1 · Jyoti Prasad Chakraborty1 Received: 30 January 2020 / Accepted: 11 September 2020 © Springer Japan KK, part of Springer Nature 2020
Abstract In this study, pyrolysis of agricultural residues, such as rice straw (RS), wheat straw (WS), and sugarcane bagasse (SB), was performed in a fixed-bed reactor. The experiments were carried out at varying operating conditions, such as temperature, heating rate, biomass particle size and sweeping gas flow rate, such that the bio-oil yield could be maximized. Small particle size and high heating rate contributed to more bio-oil yield as compared to large particle size and low heating rate. Physicochemical properties of bio-oil samples, evaluated in a comparative manner with maximum focus devoted on analyzing the chemical constituents through GC–MS and FTIR analysis. Biochar was also examined through different physicochemical techniques (e.g., HHV, pH, SEM–EDX, FTIR, CHNS, ICP-AES) for understanding pyrolysis mechanism and its practical usability. Analysis of non-condensable gas through GC-TCD, revealed co-existence of H 2, CO, C O2 and C H4 molecules, with greater percentage of H2 and CH4 at high temperature resulted enhancement in calorific value. Keywords Pyrolysis · RS · WS · SB · Fixed-bed
Introduction Maximum of the world’s energy resources are non-renewable and fulfilling through fossil fuel sector, those are depleting day by day due to their extensive uses, and also there is a rising concern for greenhouse gas emissions [1, 2]. These fundamental problems have created a tremendous amount of interest in the field of alternative and renewable fuels, which are environmentally benign as well as economically viable [3]. Biomass is a major source of energy; it provides approx. 10–14% energy demand of world [4]. Biomass, such as materials produced from microbial, animal, algae, agricultural waste, and forestry residues, is the renewable energy source, which converted into liquid fuels and value-added chemicals and used as high-potential feedstock for conventional petroleum-based energy sector around the world Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10163-020-01114-2) contains supplementary material, which is available to authorized users. * Jyoti Prasad Chakraborty [email protected] 1
Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, UP 221005, India
[5–9]. Biomass has gained more attention because of its wide availability and low cost in comparison to other renewable energy sources [10–12]. Agricultural biomasses mainly comprise cellulose (30–60%), hemicellulose (20–35%) and lignin (15–30%) along with some resins and inorganic constituents and possess high-energy content [13]. They can be used for getting heat, power, synthesis gas, and chemicals through different thermo-chemical routes,
Data Loading...
