Chars from co-gasification of rice wastes as Cr(III) removal agents

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Rice husk (80% w/w) and polyethylene (20% w/w) were submitted for cogasification. The resulting char (GC) was characterized and used in Cr(III) liquid-phase removal assays. A Commercial Activated Carbon (CAC) was also used for comparison purposes. GC was mainly composed of ashes (68.3% w/w), with Si being the major mineral element and K the most soluble one. GC presented an alkaline character, which was responsible for an ecotoxic level in the char. In the Cr(III) removal assays, three Solid/Liquid ratios (S/L) were used: 2.5, 5.0 and 10.0 g L−1. Generally, GC performed better than CAC: in the S/L of 10.0 g L–1, GC removed 98.9% of Cr(III) (mainly by precipitation), while in the S/L of 5.0 g L–1, GC removed 42.3% of Cr(III) by adsorption. The ionic exchanges of K+ from GC and Cr(III) in the liquid medium were the predominant removal mechanism.

Original languageEnglish
Title of host publicationWASTES - Solutions, Treatments and Opportunities II - Selected papers from the 4th edition of the International Conference Wastes
Subtitle of host publicationSolutions, Treatments and Opportunities, 2017
EditorsMaria de Lurdes Lopes, Cândida Vilarinho, Fernando Castro
Place of PublicationLondon
PublisherCRC Press/Balkema
Pages75-80
Number of pages6
ISBN (Electronic)9781315206172
ISBN (Print)9781138196698
DOIs
Publication statusPublished - 1 Jan 2018
Event4th International Conference Wastes: Solutions, Treatments and Opportunities, WASTES 2017 - Porto, Portugal
Duration: 25 Sep 201726 Sep 2017

Conference

Conference4th International Conference Wastes: Solutions, Treatments and Opportunities, WASTES 2017
CountryPortugal
CityPorto
Period25/09/1726/09/17

Fingerprint

rice
liquid
activated carbon
assay
ash
gasification
removal
adsorption
mineral

Keywords

  • Activated carbon
  • Ion exchange
  • Wastes

Cite this

Dias, D., Ribeiro, W., Lapa, N., Bernardo, M., Matos, I., Fonseca, I., & Pinto, F. (2018). Chars from co-gasification of rice wastes as Cr(III) removal agents. In M. de Lurdes Lopes, C. Vilarinho, & F. Castro (Eds.), WASTES - Solutions, Treatments and Opportunities II - Selected papers from the 4th edition of the International Conference Wastes: Solutions, Treatments and Opportunities, 2017 (pp. 75-80). London: CRC Press/Balkema. https://doi.org/10.1201/9781315206172-13
Dias, D. ; Ribeiro, W. ; Lapa, N. ; Bernardo, M. ; Matos, I. ; Fonseca, I. ; Pinto, F. / Chars from co-gasification of rice wastes as Cr(III) removal agents. WASTES - Solutions, Treatments and Opportunities II - Selected papers from the 4th edition of the International Conference Wastes: Solutions, Treatments and Opportunities, 2017. editor / Maria de Lurdes Lopes ; Cândida Vilarinho ; Fernando Castro. London : CRC Press/Balkema, 2018. pp. 75-80
@inproceedings{b27533eb06294c9db84e6fd333e94df8,
title = "Chars from co-gasification of rice wastes as Cr(III) removal agents",
abstract = "Rice husk (80{\%} w/w) and polyethylene (20{\%} w/w) were submitted for cogasification. The resulting char (GC) was characterized and used in Cr(III) liquid-phase removal assays. A Commercial Activated Carbon (CAC) was also used for comparison purposes. GC was mainly composed of ashes (68.3{\%} w/w), with Si being the major mineral element and K the most soluble one. GC presented an alkaline character, which was responsible for an ecotoxic level in the char. In the Cr(III) removal assays, three Solid/Liquid ratios (S/L) were used: 2.5, 5.0 and 10.0 g L−1. Generally, GC performed better than CAC: in the S/L of 10.0 g L–1, GC removed 98.9{\%} of Cr(III) (mainly by precipitation), while in the S/L of 5.0 g L–1, GC removed 42.3{\%} of Cr(III) by adsorption. The ionic exchanges of K+ from GC and Cr(III) in the liquid medium were the predominant removal mechanism.",
keywords = "Activated carbon, Ion exchange, Wastes",
author = "D. Dias and W. Ribeiro and N. Lapa and M. Bernardo and I. Matos and I. Fonseca and F. Pinto",
note = "info:eu-repo/grantAgreement/FCT/COMPETE/129816/PT# info:eu-repo/grantAgreement/FCT/SFRH/SFRH{\%}2FBPD{\%}2F93407{\%}2F2013/PT# info:eu-repo/grantAgreement/FCT/5876/147218/PT# Sem pdf. This research was funded by FEDER through the Operational Program for Competitive Factors of COMPETE and by Portuguese funds through FCT FCOMP-01-0124-FEDER-027827, a project sponsored by FCT/MTCES, QREN, COMPETE and FEDER. The authors also acknowledge the Foundation for Science and Technology for funding , Diogo Dias's PhD fellowship (SFRH/BD/101751/2014), and co-funds by the ERDF under the PT2020 Partnership Agreement (POCI-01-0145-FEDER-007265).",
year = "2018",
month = "1",
day = "1",
doi = "10.1201/9781315206172-13",
language = "English",
isbn = "9781138196698",
pages = "75--80",
editor = "{de Lurdes Lopes}, Maria and C{\^a}ndida Vilarinho and Fernando Castro",
booktitle = "WASTES - Solutions, Treatments and Opportunities II - Selected papers from the 4th edition of the International Conference Wastes",
publisher = "CRC Press/Balkema",

}

Dias, D, Ribeiro, W, Lapa, N, Bernardo, M, Matos, I, Fonseca, I & Pinto, F 2018, Chars from co-gasification of rice wastes as Cr(III) removal agents. in M de Lurdes Lopes, C Vilarinho & F Castro (eds), WASTES - Solutions, Treatments and Opportunities II - Selected papers from the 4th edition of the International Conference Wastes: Solutions, Treatments and Opportunities, 2017. CRC Press/Balkema, London, pp. 75-80, 4th International Conference Wastes: Solutions, Treatments and Opportunities, WASTES 2017, Porto, Portugal, 25/09/17. https://doi.org/10.1201/9781315206172-13

Chars from co-gasification of rice wastes as Cr(III) removal agents. / Dias, D.; Ribeiro, W.; Lapa, N.; Bernardo, M.; Matos, I.; Fonseca, I.; Pinto, F.

WASTES - Solutions, Treatments and Opportunities II - Selected papers from the 4th edition of the International Conference Wastes: Solutions, Treatments and Opportunities, 2017. ed. / Maria de Lurdes Lopes; Cândida Vilarinho; Fernando Castro. London : CRC Press/Balkema, 2018. p. 75-80.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Chars from co-gasification of rice wastes as Cr(III) removal agents

AU - Dias, D.

AU - Ribeiro, W.

AU - Lapa, N.

AU - Bernardo, M.

AU - Matos, I.

AU - Fonseca, I.

AU - Pinto, F.

N1 - info:eu-repo/grantAgreement/FCT/COMPETE/129816/PT# info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F93407%2F2013/PT# info:eu-repo/grantAgreement/FCT/5876/147218/PT# Sem pdf. This research was funded by FEDER through the Operational Program for Competitive Factors of COMPETE and by Portuguese funds through FCT FCOMP-01-0124-FEDER-027827, a project sponsored by FCT/MTCES, QREN, COMPETE and FEDER. The authors also acknowledge the Foundation for Science and Technology for funding , Diogo Dias's PhD fellowship (SFRH/BD/101751/2014), and co-funds by the ERDF under the PT2020 Partnership Agreement (POCI-01-0145-FEDER-007265).

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Rice husk (80% w/w) and polyethylene (20% w/w) were submitted for cogasification. The resulting char (GC) was characterized and used in Cr(III) liquid-phase removal assays. A Commercial Activated Carbon (CAC) was also used for comparison purposes. GC was mainly composed of ashes (68.3% w/w), with Si being the major mineral element and K the most soluble one. GC presented an alkaline character, which was responsible for an ecotoxic level in the char. In the Cr(III) removal assays, three Solid/Liquid ratios (S/L) were used: 2.5, 5.0 and 10.0 g L−1. Generally, GC performed better than CAC: in the S/L of 10.0 g L–1, GC removed 98.9% of Cr(III) (mainly by precipitation), while in the S/L of 5.0 g L–1, GC removed 42.3% of Cr(III) by adsorption. The ionic exchanges of K+ from GC and Cr(III) in the liquid medium were the predominant removal mechanism.

AB - Rice husk (80% w/w) and polyethylene (20% w/w) were submitted for cogasification. The resulting char (GC) was characterized and used in Cr(III) liquid-phase removal assays. A Commercial Activated Carbon (CAC) was also used for comparison purposes. GC was mainly composed of ashes (68.3% w/w), with Si being the major mineral element and K the most soluble one. GC presented an alkaline character, which was responsible for an ecotoxic level in the char. In the Cr(III) removal assays, three Solid/Liquid ratios (S/L) were used: 2.5, 5.0 and 10.0 g L−1. Generally, GC performed better than CAC: in the S/L of 10.0 g L–1, GC removed 98.9% of Cr(III) (mainly by precipitation), while in the S/L of 5.0 g L–1, GC removed 42.3% of Cr(III) by adsorption. The ionic exchanges of K+ from GC and Cr(III) in the liquid medium were the predominant removal mechanism.

KW - Activated carbon

KW - Ion exchange

KW - Wastes

UR - http://www.scopus.com/inward/record.url?scp=85058188750&partnerID=8YFLogxK

U2 - 10.1201/9781315206172-13

DO - 10.1201/9781315206172-13

M3 - Conference contribution

SN - 9781138196698

SP - 75

EP - 80

BT - WASTES - Solutions, Treatments and Opportunities II - Selected papers from the 4th edition of the International Conference Wastes

A2 - de Lurdes Lopes, Maria

A2 - Vilarinho, Cândida

A2 - Castro, Fernando

PB - CRC Press/Balkema

CY - London

ER -

Dias D, Ribeiro W, Lapa N, Bernardo M, Matos I, Fonseca I et al. Chars from co-gasification of rice wastes as Cr(III) removal agents. In de Lurdes Lopes M, Vilarinho C, Castro F, editors, WASTES - Solutions, Treatments and Opportunities II - Selected papers from the 4th edition of the International Conference Wastes: Solutions, Treatments and Opportunities, 2017. London: CRC Press/Balkema. 2018. p. 75-80 https://doi.org/10.1201/9781315206172-13