Characterization of herb residue and high ash-containing paper sludge blends from fixed bed pyrolysis

Li, Tiantao; Guo, Feiqiang; Li, Xiaolei; Yuan, Liu; Peng, Kuangye; Jiang, Xiaochen

doi:10.1016/j.wasman.2018.04.002

Cited by 48 publications

(17 citation statements)

References 48 publications

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“…The conversion of long-chained aromatic groups and alkyl groups to methane then occurred from 309 • C to 478 • C [50]. In the inhibitive stage, CH 4 is mainly derived from the conversion of methoxyl groups in lignin after 478 • C [51,52]. The CH 4 peak intensity in the synergistic zone was lower than that in the inhibitory zone, which is mainly attributed to the speed of weight loss.…”

Section: Tg-ms Analysismentioning

confidence: 99%

Quest for the Co-Pyrolysis Behavior of Rice Husk and Cresol Distillation Residue: Interaction, Gas Evolution and Kinetics

Cui

Zhang

et al. 2022

Energies

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With the tremendous prosperity of industry, more and more hazardous waste is discharged from industrial production processes. Cresol distillation residue is a typical industrial hazardous waste that causes severe pollution without proper treatment. Herein, the co-pyrolysis of rice husk and cresol distillation residue was studied using thermogravimetry–mass spectrometry and kinetic studies. The Coats and Redfern method was employed to calculate the activation energy. The results indicated that the pyrolysis process of cresol distillation residue and RH/CDR (Rice Husk and Cresol Distillation Residue) blends can be divided into four stages and three stages for RH. The introduction of RH not only improved the thermo-stability of cresol distillation residue at a low temperature but also reduced the activation energy of the blends. The activation energy was the lowest when the proportion of rice husk in the blend was 60%. The main gaseous pyrolysis products included CH4, H2O, C2H2, CO2, C3H6 and H2. There existed an unusual combination of synergistic and inhibitive interactions between RH and cresol distillation residue, respectively, within different temperature ranges. The synergistic interaction decreased the reaction’s activation energy, whereas the inhibitive interaction reduced the emission of main gaseous products, such as CH4 and CO2. It was concluded that the addition of RH was conducive to improving the pyrolytic performance of cresol distillation residue and the resource utilization of cresol distillation residue.

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Section: Tg-ms Analysismentioning

confidence: 99%

Quest for the Co-Pyrolysis Behavior of Rice Husk and Cresol Distillation Residue: Interaction, Gas Evolution and Kinetics

Cui

Zhang

et al. 2022

Energies

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“…The annual discharge of CMHR's has the characteristics of large output and concentrated discharge. In addition, with an initial moisture content of more than 70%, Chinese medicinal residues are di cult to store and degrade, highly perishable, and unpleasant smell (Chen et al, 2017;Li et al, 2018). There is a great variety of CMHR's.…”

Section: Introductionmentioning

confidence: 99%

Aromatics Production With Cobalt-Modified Ultra-Stable Y Zeolites As Catalysts In Catalytic Pyrolysis of Ginkgo Biloba Residue

yousaf

Tian

et al. 2021

Preprint

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The current research studied the performance of novel and cheap catalysts, ultra-stable Y zeolites (USY) and cobalt-modified USY for the efficient production of aromatics from the ginkgo Biloba residue (GBR) using a pyrolysis reactor. Cobalt-modified USY improved the quality of the pyrolysis products e.g. removed unwanted impurities from bio-oil, increased the yield of gases, and overall boosted the GBR conversion. Under the action of USY modified with cobalt, the yield of CO, CH4, and CO2 in the gas production increased significantly, while the yield of H2 was dropped. The selectivity of naphthalene and 1-methylnaphthalene gradually decreased. The composition of aromatic hydrocarbons was reduced, while the content and selectivity ratios of toluene and xylene were increased. This study describes a high-value method using GBR, which could be used as a sustainable resource for the production of hydrocarbons, especially for the preparation of high-quality toluene and phenols.

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“…As a consequence of this important industry, large amounts of organic herbal residue remain after decoction, with more than 30 million tons of it produced every year 3 ; because of no widespread use for this residue, it is generally disposed in landfills. It also produces a pungent smell that becomes an issue for living near a landfill in which the residue is disposed 4 …”

Section: Introductionmentioning

confidence: 99%

“…It also produces a pungent smell that becomes an issue for living near a landfill in which the residue is disposed. 4 A potentially sustainable alternative to landfills is to convert the organic herbal residue into fertilizer. 5 However, this conversion has only enabled a very limited amount of the residue to be used and, problematically, the residues can contain high levels of heavy metals which then seep into soils after fertilizer application.…”

Section: Introductionmentioning

confidence: 99%

Co‐use of organic herbal residue and red mud waste for syngas production by chemical looping gasification

Liu

Zhang

et al. 2020

Int J Energy Res

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Summary Tremendous amounts of organic residue from manufacturing herbal medicines and inorganic red mud waste from mining bauxite ores are landfilled each year in China. To study the potential for their beneficial co‐use, chemical looping gasification (CLG) was tested in which the organic residue was used as the fuel and the red mud was the oxygen carrier that is needed for CLG. Parametric testing was performed using a thermo‐gravimetric analyzer and a bench‐scale fluidized bed reactor to optimize CLG operations that could maximum syngas production, enrich H2 concentrations and obtain effective conversion of the residue. Physical and chemical characterization of the organic residue and red mud before and after CLG testing showed that some filamentous ash from the organic residue remained on the surface after testing, and potassium from the organic residue migrated onto the surface of the oxygen carrier. The characterization and testing results suggested that CLG may be an advantageous technology to effectively convert an organic waste into syngas and an inorganic waste into a usable product, thereby establishing an approach for beneficial waste resource utilization.

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Characterization of herb residue and high ash-containing paper sludge blends from fixed bed pyrolysis

Cited by 48 publications

References 48 publications

Quest for the Co-Pyrolysis Behavior of Rice Husk and Cresol Distillation Residue: Interaction, Gas Evolution and Kinetics

Quest for the Co-Pyrolysis Behavior of Rice Husk and Cresol Distillation Residue: Interaction, Gas Evolution and Kinetics

Aromatics Production With Cobalt-Modified Ultra-Stable Y Zeolites As Catalysts In Catalytic Pyrolysis of Ginkgo Biloba Residue

Co‐use of organic herbal residue and red mud waste for syngas production by chemical looping gasification

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