Efficient activated carbons from chars of the co-pyrolysis of rice wastes

D. Dias; M. Miguel; N. Lapa; M. Bernardo; I. Matos; I. Fonseca; F. Pinto

doi:10.1201/9781315206172-57

Efficient activated carbons from chars of the co-pyrolysis of rice wastes

D. Dias, M. Miguel, N. Lapa, M. Bernardo, I. Matos, I. Fonseca, F. Pinto

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Chars obtained from the co-pyrolysis of rice husk (50% w/w) and polyethylene (50% w/w) were converted to activated carbons by physical activation. A fraction of the resulting activated carbon (PCPA) was submitted to chemical treatment with HNO ₃ for functionalization purposes (PCAPCT). Both activated carbons were used in Cr(III) removal assays from liquid-phase. A commercial activated carbon, either submitted or not submitted to HNO ₃ treatment (CACCT and CAC, respectively) was used for comparison purposes. During Cr(III) removal assays, two different solid/liquid ratios (S/L) were tested: 5.0 and 10.0 g L ⁻¹ . Concerning Cr(III) removal, PCPA was more efficient than CAC; with a S/L ratio of 10.0 g L ⁻¹ , PCPA was able to remove 99.9% of Cr(III) by precipitation. On the other hand, PCPACT performed slightly better with a S/L ratio of 5 g L ⁻¹ than CACCT, with 50.9% Cr(III) removed only by adsorption mechanism.

Original language	English
Title of host publication	WASTES - Solutions, Treatments and Opportunities II - Selected papers from the 4th edition of the International Conference Wastes: Solutions, Treatments and Opportunities, 2017
Editors	Maria de Lurdes Lopes, Cândida Vilarinho, Fernando Castro
Publisher	CRC Press/Balkema
Pages	359-364
Number of pages	6
ISBN (Print)	78-113819669-8
DOIs	https://doi.org/10.1201/9781315206172-57
Publication status	Published - 1 Jan 2018
Event	4th International Conference Wastes: Solutions, Treatments and Opportunities, WASTES 2017 - Porto, Portugal Duration: 25 Sept 2017 → 26 Sept 2017

Conference

Conference	4th International Conference Wastes: Solutions, Treatments and Opportunities, WASTES 2017
Country/Territory	Portugal
City	Porto
Period	25/09/17 → 26/09/17

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Dias, D., Miguel, M., Lapa, N., Bernardo, M., Matos, I., Fonseca, I., & Pinto, F. (2018). Efficient activated carbons from chars of the co-pyrolysis of rice wastes. 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. 359-364). CRC Press/Balkema. https://doi.org/10.1201/9781315206172-57

Dias, D. ; Miguel, M. ; Lapa, N. et al. / Efficient activated carbons from chars of the co-pyrolysis of rice wastes. 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. CRC Press/Balkema, 2018. pp. 359-364

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title = "Efficient activated carbons from chars of the co-pyrolysis of rice wastes",

abstract = " Chars obtained from the co-pyrolysis of rice husk (50% w/w) and polyethylene (50% w/w) were converted to activated carbons by physical activation. A fraction of the resulting activated carbon (PCPA) was submitted to chemical treatment with HNO 3 for functionalization purposes (PCAPCT). Both activated carbons were used in Cr(III) removal assays from liquid-phase. A commercial activated carbon, either submitted or not submitted to HNO 3 treatment (CACCT and CAC, respectively) was used for comparison purposes. During Cr(III) removal assays, two different solid/liquid ratios (S/L) were tested: 5.0 and 10.0 g L −1 . Concerning Cr(III) removal, PCPA was more efficient than CAC; with a S/L ratio of 10.0 g L −1 , PCPA was able to remove 99.9% of Cr(III) by precipitation. On the other hand, PCPACT performed slightly better with a S/L ratio of 5 g L −1 than CACCT, with 50.9% Cr(III) removed only by adsorption mechanism. ",

author = "D. Dias and M. Miguel and N. Lapa and M. Bernardo and I. Matos and I. Fonseca and F. Pinto",

note = "Sem PDF. info:eu-repo/grantAgreement/FCT/COMPETE/129816/PT# This research was funded by FEDER through the Operational Program for Competitive Factors of COMPETE and by Portuguese funds through FCT (Foundation for Science and Technology) through the project PTDC/AAG-REC/3477/2012-RICEVALOR {"}Energetic valorization of wastes obtained during rice production in Portugal{"}, FCOMP-01-0124-FEDER-027827, a project sponsored by FCT/MTCES, QREN, COMPETE and FEDER.; 4th International Conference Wastes: Solutions, Treatments and Opportunities, WASTES 2017 ; Conference date: 25-09-2017 Through 26-09-2017",

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Dias, D , Miguel, M , Lapa, N , Bernardo, M , Matos, I , Fonseca, I & Pinto, F 2018, Efficient activated carbons from chars of the co-pyrolysis of rice wastes. 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, pp. 359-364, 4th International Conference Wastes: Solutions, Treatments and Opportunities, WASTES 2017, Porto, Portugal, 25/09/17. https://doi.org/10.1201/9781315206172-57

Efficient activated carbons from chars of the co-pyrolysis of rice wastes. / Dias, D.; Miguel, M.; Lapa, N. et al.
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. CRC Press/Balkema, 2018. p. 359-364.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Miguel, M.

AU - Lapa, N.

AU - Bernardo, M.

AU - Matos, I.

AU - Fonseca, I.

AU - Pinto, F.

N1 - Sem PDF. info:eu-repo/grantAgreement/FCT/COMPETE/129816/PT# This research was funded by FEDER through the Operational Program for Competitive Factors of COMPETE and by Portuguese funds through FCT (Foundation for Science and Technology) through the project PTDC/AAG-REC/3477/2012-RICEVALOR "Energetic valorization of wastes obtained during rice production in Portugal", FCOMP-01-0124-FEDER-027827, a project sponsored by FCT/MTCES, QREN, COMPETE and FEDER.

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N2 - Chars obtained from the co-pyrolysis of rice husk (50% w/w) and polyethylene (50% w/w) were converted to activated carbons by physical activation. A fraction of the resulting activated carbon (PCPA) was submitted to chemical treatment with HNO 3 for functionalization purposes (PCAPCT). Both activated carbons were used in Cr(III) removal assays from liquid-phase. A commercial activated carbon, either submitted or not submitted to HNO 3 treatment (CACCT and CAC, respectively) was used for comparison purposes. During Cr(III) removal assays, two different solid/liquid ratios (S/L) were tested: 5.0 and 10.0 g L −1 . Concerning Cr(III) removal, PCPA was more efficient than CAC; with a S/L ratio of 10.0 g L −1 , PCPA was able to remove 99.9% of Cr(III) by precipitation. On the other hand, PCPACT performed slightly better with a S/L ratio of 5 g L −1 than CACCT, with 50.9% Cr(III) removed only by adsorption mechanism.

AB - Chars obtained from the co-pyrolysis of rice husk (50% w/w) and polyethylene (50% w/w) were converted to activated carbons by physical activation. A fraction of the resulting activated carbon (PCPA) was submitted to chemical treatment with HNO 3 for functionalization purposes (PCAPCT). Both activated carbons were used in Cr(III) removal assays from liquid-phase. A commercial activated carbon, either submitted or not submitted to HNO 3 treatment (CACCT and CAC, respectively) was used for comparison purposes. During Cr(III) removal assays, two different solid/liquid ratios (S/L) were tested: 5.0 and 10.0 g L −1 . Concerning Cr(III) removal, PCPA was more efficient than CAC; with a S/L ratio of 10.0 g L −1 , PCPA was able to remove 99.9% of Cr(III) by precipitation. On the other hand, PCPACT performed slightly better with a S/L ratio of 5 g L −1 than CACCT, with 50.9% Cr(III) removed only by adsorption mechanism.

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BT - WASTES - Solutions, Treatments and Opportunities II - Selected papers from the 4th edition of the International Conference Wastes: Solutions, Treatments and Opportunities, 2017

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Dias D , Miguel M , Lapa N , Bernardo M , Matos I , Fonseca I et al. Efficient activated carbons from chars of the co-pyrolysis of rice wastes. 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. CRC Press/Balkema. 2018. p. 359-364 doi: 10.1201/9781315206172-57

Efficient activated carbons from chars of the co-pyrolysis of rice wastes

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