Step washing: A modified pretreatment approach for industrial applications to improve chemical composition of agricultural residues

Abhishek Singhal; Maria Goossens; Davide Fantozzi; Antti Raiko; Jukka Konttinen; Tero Joronen

doi:10.1016/j.biortech.2021.125753

Step washing: A modified pretreatment approach for industrial applications to improve chemical composition of agricultural residues

Abhishek Singhal, Maria Goossens, Davide Fantozzi, Antti Raiko, Jukka Konttinen, Tero Joronen

Materials Science and Environmental Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

13 Citations (Scopus)

28 Downloads (Pure)

Abstract

To improve the efficiency and applicability of the washing pre-treatment for combustion, pyrolysis and gasification, a modified approach was developed in the present study. Two novel washing approaches were tested using wheat straw and empty fruit bunches of oil palm: multiple-step washing with fresh water (SWFW) and wastewater recirculation (SWWR). SWFW showed the high removal of K (<68%), Cl (<99%), S (<80%), N (<58%), and ash (<52%) reducing fouling, slagging, and corrosion propensity of the biomass. Furthermore, with one-third the amount of water used in SWFW, SWWR showed similar to higher efficiency than SWFW with relatively better energy (98%) yields. Industrial-scale pilot testing was also conducted for the validation of the SWWR approach, which showed similar findings as the lab-scale results. The effect of a high washing temperature and pressing on washing efficiency and characterisation of wastewater was also determined. Overall, SWWR with pressing is recommended for industrial applications.

Original language	English
Article number	125753
Number of pages	12
Journal	Bioresource Technology
Volume	341
DOIs	https://doi.org/10.1016/j.biortech.2021.125753
Publication status	Published - 2021
Publication type	A1 Journal article-refereed

Keywords

Leaching
Wheat Straw
Empty fruit bunches
Biomass Pretreatment
Slagging
Fouling
Corrosion

Publication forum classification

Publication forum level 2

ASJC Scopus subject areas

General Chemical Engineering
General Chemistry
General Engineering
Fuel Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.biortech.2021.125753Licence: CC BY

Step washing paperFinal published version, 1.62 MBLicence: CC BY

http://urn.fi/URN:NBN:fi:tuni-202108236700Licence: CC BY

1 Conference presentation

Effect of different type of water-washing pre-treatment on the fuel properties and elemental composition of wheat straw and oil palm empty fruit bunches
Singhal, A. (Speaker), Goossens, M. (Contributor), Konttinen, J. (Contributor) & Joronen, T. (Contributor)
17 May 2021 → 19 May 2021
Activity: Talk or presentation › Conference presentation

Cite this

@article{f2461b2eee4b40c39a9c3a8ff996623b,

title = "Step washing: A modified pretreatment approach for industrial applications to improve chemical composition of agricultural residues",

abstract = "To improve the efficiency and applicability of the washing pre-treatment for combustion, pyrolysis and gasification, a modified approach was developed in the present study. Two novel washing approaches were tested using wheat straw and empty fruit bunches of oil palm: multiple-step washing with fresh water (SWFW) and wastewater recirculation (SWWR). SWFW showed the high removal of K (<68%), Cl (<99%), S (<80%), N (<58%), and ash (<52%) reducing fouling, slagging, and corrosion propensity of the biomass. Furthermore, with one-third the amount of water used in SWFW, SWWR showed similar to higher efficiency than SWFW with relatively better energy (98%) yields. Industrial-scale pilot testing was also conducted for the validation of the SWWR approach, which showed similar findings as the lab-scale results. The effect of a high washing temperature and pressing on washing efficiency and characterisation of wastewater was also determined. Overall, SWWR with pressing is recommended for industrial applications.",

keywords = "Leaching, Wheat Straw, Empty fruit bunches, Biomass Pretreatment, Slagging, Fouling, Corrosion",

author = "Abhishek Singhal and Maria Goossens and Davide Fantozzi and Antti Raiko and Jukka Konttinen and Tero Joronen",

year = "2021",

doi = "10.1016/j.biortech.2021.125753",

language = "English",

volume = "341",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "ELSEVIER SCI LTD",

}

TY - JOUR

T1 - Step washing

T2 - A modified pretreatment approach for industrial applications to improve chemical composition of agricultural residues

AU - Singhal, Abhishek

AU - Goossens, Maria

AU - Fantozzi, Davide

AU - Raiko, Antti

AU - Konttinen, Jukka

AU - Joronen, Tero

PY - 2021

Y1 - 2021

N2 - To improve the efficiency and applicability of the washing pre-treatment for combustion, pyrolysis and gasification, a modified approach was developed in the present study. Two novel washing approaches were tested using wheat straw and empty fruit bunches of oil palm: multiple-step washing with fresh water (SWFW) and wastewater recirculation (SWWR). SWFW showed the high removal of K (<68%), Cl (<99%), S (<80%), N (<58%), and ash (<52%) reducing fouling, slagging, and corrosion propensity of the biomass. Furthermore, with one-third the amount of water used in SWFW, SWWR showed similar to higher efficiency than SWFW with relatively better energy (98%) yields. Industrial-scale pilot testing was also conducted for the validation of the SWWR approach, which showed similar findings as the lab-scale results. The effect of a high washing temperature and pressing on washing efficiency and characterisation of wastewater was also determined. Overall, SWWR with pressing is recommended for industrial applications.

AB - To improve the efficiency and applicability of the washing pre-treatment for combustion, pyrolysis and gasification, a modified approach was developed in the present study. Two novel washing approaches were tested using wheat straw and empty fruit bunches of oil palm: multiple-step washing with fresh water (SWFW) and wastewater recirculation (SWWR). SWFW showed the high removal of K (<68%), Cl (<99%), S (<80%), N (<58%), and ash (<52%) reducing fouling, slagging, and corrosion propensity of the biomass. Furthermore, with one-third the amount of water used in SWFW, SWWR showed similar to higher efficiency than SWFW with relatively better energy (98%) yields. Industrial-scale pilot testing was also conducted for the validation of the SWWR approach, which showed similar findings as the lab-scale results. The effect of a high washing temperature and pressing on washing efficiency and characterisation of wastewater was also determined. Overall, SWWR with pressing is recommended for industrial applications.

KW - Leaching

KW - Wheat Straw

KW - Empty fruit bunches

KW - Biomass Pretreatment

KW - Slagging

KW - Fouling

KW - Corrosion

U2 - 10.1016/j.biortech.2021.125753

DO - 10.1016/j.biortech.2021.125753

M3 - Article

SN - 0960-8524

VL - 341

JO - Bioresource Technology

JF - Bioresource Technology

M1 - 125753

ER -

Step washing: A modified pretreatment approach for industrial applications to improve chemical composition of agricultural residues

Abstract

Keywords

Publication forum classification

ASJC Scopus subject areas

UN SDGs

Access to Document

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Activities

Effect of different type of water-washing pre-treatment on the fuel properties and elemental composition of wheat straw and oil palm empty fruit bunches

Cite this