Waste pulp chemical-looping gasification using Ni-modified electroplating sludge as an oxygen carrier

Waste pulp (WP) is a typical byproduct of paper industry, and Chemical-looping gasification (CLG) as a recently developed technology is highly suited to dispose high-volatile wastes like WP. In order to make a high-efficiency oxygen carrier (OC) for CLG of WP, the Ni-containing electroplating sludge...

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Main Authors: Genyang Tang, Jing Gu, Guoqiang Wei, Haoran Yuan, Yong Chen
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2023-06-01
Series:Carbon Resources Conversion
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2588913322000709
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author Genyang Tang
Jing Gu
Guoqiang Wei
Haoran Yuan
Yong Chen
author_facet Genyang Tang
Jing Gu
Guoqiang Wei
Haoran Yuan
Yong Chen
author_sort Genyang Tang
collection DOAJ
description Waste pulp (WP) is a typical byproduct of paper industry, and Chemical-looping gasification (CLG) as a recently developed technology is highly suited to dispose high-volatile wastes like WP. In order to make a high-efficiency oxygen carrier (OC) for CLG of WP, the Ni-containing electroplating sludge (NES) was used as the matrix and NiO modification was performed to enhance the hydrogen production in CLG. These resulted in a potentially high-efficiency OC denoted as NNES. Testing CLG of WP was in a fixed-bed reactor at 850 °C by adopting NNES as the OC, injecting 2.4 mL/g(WP) water, and keeping a mass ratio of 1.0 between OC to WP. It produced 1.73 Nm3/kg syngas that has an LHV of 11.9 MJ/Nm3 and a H2/CO ratio of 3.63. In 10 redox cycles, the syngas yield did not have obvious decrease, but a certain reduction in the activity of NNES was observed. Characterization of the spent NNES revealed that it is the Ni agglomeration and inert silicate generation which reduced the activity of NNES.
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spelling doaj.art-e1c50a182186485d90fc2017566e03f12023-04-22T06:22:11ZengKeAi Communications Co., Ltd.Carbon Resources Conversion2588-91332023-06-0162106115Waste pulp chemical-looping gasification using Ni-modified electroplating sludge as an oxygen carrierGenyang Tang0Jing Gu1Guoqiang Wei2Haoran Yuan3Yong Chen4Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China; University of Chinese Academy of Sciences, Beijing 100049, ChinaGuangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, ChinaGuangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, ChinaGuangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China; University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding author at: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China; University of Chinese Academy of Sciences, Beijing 100049, ChinaWaste pulp (WP) is a typical byproduct of paper industry, and Chemical-looping gasification (CLG) as a recently developed technology is highly suited to dispose high-volatile wastes like WP. In order to make a high-efficiency oxygen carrier (OC) for CLG of WP, the Ni-containing electroplating sludge (NES) was used as the matrix and NiO modification was performed to enhance the hydrogen production in CLG. These resulted in a potentially high-efficiency OC denoted as NNES. Testing CLG of WP was in a fixed-bed reactor at 850 °C by adopting NNES as the OC, injecting 2.4 mL/g(WP) water, and keeping a mass ratio of 1.0 between OC to WP. It produced 1.73 Nm3/kg syngas that has an LHV of 11.9 MJ/Nm3 and a H2/CO ratio of 3.63. In 10 redox cycles, the syngas yield did not have obvious decrease, but a certain reduction in the activity of NNES was observed. Characterization of the spent NNES revealed that it is the Ni agglomeration and inert silicate generation which reduced the activity of NNES.http://www.sciencedirect.com/science/article/pii/S2588913322000709Solid wasteCLGWaste pulpElectroplating sludgeOxygen carrier
spellingShingle Genyang Tang
Jing Gu
Guoqiang Wei
Haoran Yuan
Yong Chen
Waste pulp chemical-looping gasification using Ni-modified electroplating sludge as an oxygen carrier
Carbon Resources Conversion
Solid waste
CLG
Waste pulp
Electroplating sludge
Oxygen carrier
title Waste pulp chemical-looping gasification using Ni-modified electroplating sludge as an oxygen carrier
title_full Waste pulp chemical-looping gasification using Ni-modified electroplating sludge as an oxygen carrier
title_fullStr Waste pulp chemical-looping gasification using Ni-modified electroplating sludge as an oxygen carrier
title_full_unstemmed Waste pulp chemical-looping gasification using Ni-modified electroplating sludge as an oxygen carrier
title_short Waste pulp chemical-looping gasification using Ni-modified electroplating sludge as an oxygen carrier
title_sort waste pulp chemical looping gasification using ni modified electroplating sludge as an oxygen carrier
topic Solid waste
CLG
Waste pulp
Electroplating sludge
Oxygen carrier
url http://www.sciencedirect.com/science/article/pii/S2588913322000709
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