Syngas production from two-stage sorption-enhanced steam gasification of sewage sludge over bifunctional Ni-Ca catalyst

Xiaoxia Yang; Shengshen Gu; Amanj Kheradmand; Yijiao Jiang

doi:10.1021/acs.energyfuels.0c04395

Syngas production from two-stage sorption-enhanced steam gasification of sewage sludge over bifunctional Ni-Ca catalyst

Xiaoxia Yang, Shengshen Gu, Amanj Kheradmand, Yijiao Jiang^*

^*Corresponding author for this work

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

17 Citations (Scopus)

Abstract

To further enhance the syngas production, the bifunctional Ni-CaO/Al2O3 catalyst was introduced into the two-stage sorption-enhanced catalytic steam gasification of sewage sludge (SS) in this study. Considering the high yield and purity of H2 at the first stage and CO at the second stage, 600 and 800 °C are determined as the optimal temperatures for the first and second stage, respectively. The Ni5Ca40/Al catalyst shows superior CO2 capture capacity, a high dispersion of Ni, and strong metal–support interaction over which the highest syngas production of 645.5 NmL/gdry ss was generated with a H2-rich gas stream at the first stage (396.9 NmL/gdry SS) and a CO-rich gas stream at the second stage (208.4 NmL/gdry SS). There is a synergistic effect of CaO and Ni on the enhancement in both yield and purity of H2 at the first stage, whereas the yield and purity of CO at the second stage are mainly affected by the CaO.

Original language	English
Pages (from-to)	4997-5005
Number of pages	9
Journal	Energy and Fuels
Volume	35
Issue number	6
DOIs	https://doi.org/10.1021/acs.energyfuels.0c04395
Publication status	Published - 18 Mar 2021

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10.1021/acs.energyfuels.0c04395

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@article{e244f86b52074e759a717857dc13fa25,

title = "Syngas production from two-stage sorption-enhanced steam gasification of sewage sludge over bifunctional Ni-Ca catalyst",

abstract = "To further enhance the syngas production, the bifunctional Ni-CaO/Al2O3 catalyst was introduced into the two-stage sorption-enhanced catalytic steam gasification of sewage sludge (SS) in this study. Considering the high yield and purity of H2 at the first stage and CO at the second stage, 600 and 800 °C are determined as the optimal temperatures for the first and second stage, respectively. The Ni5Ca40/Al catalyst shows superior CO2 capture capacity, a high dispersion of Ni, and strong metal–support interaction over which the highest syngas production of 645.5 NmL/gdry ss was generated with a H2-rich gas stream at the first stage (396.9 NmL/gdry SS) and a CO-rich gas stream at the second stage (208.4 NmL/gdry SS). There is a synergistic effect of CaO and Ni on the enhancement in both yield and purity of H2 at the first stage, whereas the yield and purity of CO at the second stage are mainly affected by the CaO.",

author = "Xiaoxia Yang and Shengshen Gu and Amanj Kheradmand and Yijiao Jiang",

year = "2021",

month = mar,

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doi = "10.1021/acs.energyfuels.0c04395",

language = "English",

volume = "35",

pages = "4997--5005",

journal = "Energy and Fuels",

issn = "0887-0624",

publisher = "American Chemical Society",

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T1 - Syngas production from two-stage sorption-enhanced steam gasification of sewage sludge over bifunctional Ni-Ca catalyst

AU - Yang, Xiaoxia

AU - Gu, Shengshen

AU - Kheradmand, Amanj

AU - Jiang, Yijiao

PY - 2021/3/18

Y1 - 2021/3/18

N2 - To further enhance the syngas production, the bifunctional Ni-CaO/Al2O3 catalyst was introduced into the two-stage sorption-enhanced catalytic steam gasification of sewage sludge (SS) in this study. Considering the high yield and purity of H2 at the first stage and CO at the second stage, 600 and 800 °C are determined as the optimal temperatures for the first and second stage, respectively. The Ni5Ca40/Al catalyst shows superior CO2 capture capacity, a high dispersion of Ni, and strong metal–support interaction over which the highest syngas production of 645.5 NmL/gdry ss was generated with a H2-rich gas stream at the first stage (396.9 NmL/gdry SS) and a CO-rich gas stream at the second stage (208.4 NmL/gdry SS). There is a synergistic effect of CaO and Ni on the enhancement in both yield and purity of H2 at the first stage, whereas the yield and purity of CO at the second stage are mainly affected by the CaO.

AB - To further enhance the syngas production, the bifunctional Ni-CaO/Al2O3 catalyst was introduced into the two-stage sorption-enhanced catalytic steam gasification of sewage sludge (SS) in this study. Considering the high yield and purity of H2 at the first stage and CO at the second stage, 600 and 800 °C are determined as the optimal temperatures for the first and second stage, respectively. The Ni5Ca40/Al catalyst shows superior CO2 capture capacity, a high dispersion of Ni, and strong metal–support interaction over which the highest syngas production of 645.5 NmL/gdry ss was generated with a H2-rich gas stream at the first stage (396.9 NmL/gdry SS) and a CO-rich gas stream at the second stage (208.4 NmL/gdry SS). There is a synergistic effect of CaO and Ni on the enhancement in both yield and purity of H2 at the first stage, whereas the yield and purity of CO at the second stage are mainly affected by the CaO.

UR - http://purl.org/au-research/grants/arc/IH140100035

UR - https://www.scopus.com/pages/publications/85103482639

U2 - 10.1021/acs.energyfuels.0c04395

DO - 10.1021/acs.energyfuels.0c04395

M3 - Article

SN - 0887-0624

VL - 35

SP - 4997

EP - 5005

JO - Energy and Fuels

JF - Energy and Fuels

IS - 6

ER -

Syngas production from two-stage sorption-enhanced steam gasification of sewage sludge over bifunctional Ni-Ca catalyst

Abstract

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ARC Research Hub for Computational Particle Technology

Waste to resource conversion from lime-dried sewage sludge particles

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Syngas production from two-stage sorption-enhanced steam gasification of sewage sludge over bifunctional Ni-Ca catalyst

Abstract

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Projects

ARC Research Hub for Computational Particle Technology

Waste to resource conversion from lime-dried sewage sludge particles

Cite this