Preparation of a morph-genetic CaO-based sorbent using paper fibre as a biotemplate for enhanced CO2 capture

Ma, Xiaotong; Li, Yingjie; Yan, Xianyao; Zhang, Wan; Zhao, Jianli; Wang, Zeyan

doi:10.1016/j.cej.2018.12.061

Cited by 156 publications

(40 citation statements)

References 40 publications

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“…However, the pore volume distributes in 1‐100 nm ( V 1‐100nm ) of the calcined LM is less than that of the calcined limestone. Furthermore, the pore volume of calcined LM is mainly distributed in the range of 1‐10 nm, as shown in Figure 13B.The value of V 10‐100nm of the calcined LM, which has been proved to be significant for the CO 2 capture of calcium‐based sorbent, 26 is only 4.4% that of the calcined limestone. The diffusion resistance of CO 2 in the calcined LM is larger than that in the calcined limestone.…”

Section: Resultsmentioning

confidence: 96%

Kinetic analysis about the CO₂ capture capacity of lime mud from paper mill in calcium looping process

Sun

Xiao

2020

Energy Science & Engineering

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Large amount of industrial wastes are discharged from commercial production every year. 1 Lime mud is a kind of industrial waste that produced during the causticization process in paper mill. China is one of the papermaking and paper consumption powerhouses. In China, about 50 million tons of paper was produced every year, which means dozens of million tons of lime mud were discharged to the environment. The discharge of such a large amount of lime mud leads to serious environmental aspects including water pollution and land occupation. 2 Therefore, how to recycle the lime mud in environmentally friendly ways is an interesting topic and has drawn lots of researchers' attentions. Lime mud was firstly recovered as soil amendments and building materials. 3 Qin et al 4 have proved that recycling of lime mud as raw materials of anorthite ceramic was a feasible approach to solve the solid wastes. Madrid et al 5 successfully reused lime mud to produce concrete masonry units that with better thermal properties. In recent years,

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Section: Resultsmentioning

confidence: 96%

Kinetic analysis about the CO₂ capture capacity of lime mud from paper mill in calcium looping process

Sun

Xiao

2020

Energy Science & Engineering

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“… 49 However, after three cycles, the accumulation of Si in the biomass ash will reduce the H 2 production in CaO-assisted CLG. 50 Although the introduction of KNO 3 can improve the H 2 production, it is necessary to determine the optimal reaction pressure 51 and structure of OC 52 , 53 to improve the circulation of CaO-assisted OC in the CLG process.…”

Section: Resultsmentioning

confidence: 99%

CaO-Assisted Alkaline Liquid Waste Drives Corn Stalk Chemical Looping Gasification for Hydrogen Production

et al. 2020

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The chemical looping gasification (CLG) process is a promising pathway to produce hydrogen-enriched syngas with biomass. It is urgent to enhance the reactivity and thermal stability of oxygen carriers (OC) and capture the inherently separated CO 2 . This work presents the strategy of simultaneous modification of a Fe 2 O 3 /Al 2 O 3 oxygen carrier and the supplement of an oxidant for corn stalk chemical looping gasification by introducing KNO 3 -containing ethanol liquid waste. CaO is employed to capture the generated CO 2 and promote the reaction balance toward hydrogen production in a fuel reactor (FR). The highest carbon conversion reaction rate of 1.1 × 10 –4 mol/g could be obtained at the ratio of CaO to fuel carbon and the reaction temperature of 1.5 and 600 °C, respectively. The kinetics and thermodynamics analyses under the optimized condition are further discussed to verify the possibility and high efficiency of using alkaline organic liquid waste to boost solid fuel gasification for hydrogen production. This CLG strategy shows multifunctional merits, including organic liquid waste treatment, biomass CLG promotion, and hydrogen production enhancement.

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“…In addition, introducing an inert component with a high melting point into the calcium‐based adsorbent could effectively improve the sintering problem. The common inert components included MgO, 26 Al 2 O 3 , 27 ZrO 2 , 28 CeO 2 , 29 Ca 12 Al 14 O 33 , 30 Ca 2 MnO 4 , 31 and Ca 2 SiO 4. 32 These components could form an effective physical barrier, inhibited the sintering and deactivation of the active component‐CaO, thereby improving the CO 2 adsorption stability of the adsorbent.…”

Section: Introductionmentioning

confidence: 99%

Pelletization and attrition of CaO‐based adsorbent for CO₂ capture

Zhang

Jiang

Yaseen

et al. 2021

Asia-Pacific J Chem Eng

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CaO‐based adsorbent pellets from limestone and carbide slag powder were prepared by an extrusion–spheronization method. Three types of binder and peptizer materials were introduced to improve the adsorption performance and mechanical properties of adsorbent pellets. Weibull statistics was employed to analyze the compressive stress of adsorbent pellets. The results revealed that pseudo‐boehmite and nitric acid were the favorable choice of binder and peptizer for preparing CaO‐based adsorbent pellets with enhanced chemical and mechanical properties. The addition of pseudo‐boehmite (PB) improved the pore distribution characteristics by increasing the pores within 10–100 nm, and the addition of nitric acid brought favorable mechanical reliability by providing a large amount of H+, thereby interacting with multiple PB particles to form a network structure. It was shown that when 3 wt.% pseudo‐boehmite and 15 wt.% nitric acid were used, the favorable performance of the molding pellets could be obtained (carbonation conversion: 36%, compressive stress: 25.3 MPa; attrition rate: 0.46 wt.%/hr), which had promising prospects for practical CO2 removal.

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Preparation of a morph-genetic CaO-based sorbent using paper fibre as a biotemplate for enhanced CO2 capture

Cited by 156 publications

References 40 publications

Kinetic analysis about the CO₂ capture capacity of lime mud from paper mill in calcium looping process

Kinetic analysis about the CO₂ capture capacity of lime mud from paper mill in calcium looping process

CaO-Assisted Alkaline Liquid Waste Drives Corn Stalk Chemical Looping Gasification for Hydrogen Production

Pelletization and attrition of CaO‐based adsorbent for CO₂ capture

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Preparation of a morph-genetic CaO-based sorbent using paper fibre as a biotemplate for enhanced CO2 capture

Cited by 156 publications

References 40 publications

Kinetic analysis about the CO2 capture capacity of lime mud from paper mill in calcium looping process

Kinetic analysis about the CO2 capture capacity of lime mud from paper mill in calcium looping process

CaO-Assisted Alkaline Liquid Waste Drives Corn Stalk Chemical Looping Gasification for Hydrogen Production

Pelletization and attrition of CaO‐based adsorbent for CO2 capture

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Kinetic analysis about the CO₂ capture capacity of lime mud from paper mill in calcium looping process

Kinetic analysis about the CO₂ capture capacity of lime mud from paper mill in calcium looping process

Pelletization and attrition of CaO‐based adsorbent for CO₂ capture