Describing sewage sludge pyrolysis kinetics by a combination of biomass fractions decomposition

Thipkhunthod, Puchong; Meeyoo, Vissanu; Rangsunvigit, Pramoch; Rirksomboon, Thirasak

doi:10.1016/j.jaap.2006.10.005

Cited by 78 publications

(56 citation statements)

References 22 publications

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“…In the second step (S2) fraction L degrades approximately between 400 8C and 520 8C in pyrolysis and 370-520 8C in combustion. According to Thipkhunthod et al [10], this fraction is related with lignin volatization. Effectively lignin degrades in a broad peak in this temperature range [12]; however, taking into consideration the characteristics of the waste products in an urban area [13], it is reasonable to assume that sludge contains other compounds like plastics, which degrade in this temperature range [9].…”

Section: Tg and Dtg In Sewage Sludge And Its Compostmentioning

confidence: 99%

“…Font et al [9], assuming these fractions, relate biodegradable materials with hemicelluloses, and non-biodegradable matter with polymers. Thipkhunthod et al [10] relates the presence of the dead bacteria with some basic fractions present in lignocellulosic materials. According to this author, carbohydrate and fat present in inner cell(s) may be categorized into cellulose and extractive (oil-lipid) fractions.…”

Section: Pyrolysismentioning

confidence: 99%

“…of components that degrade following parallel reactions [9,10]. In both cases the overall pyrolysis behavior is the combination of the behavior of the individual components [11].…”

Section: Introductionmentioning

confidence: 99%

“…Thipkhunthod et al [10], used thermogravimetric analysis (TGA) to propose a model with four components for sewage sludge. They identified three of them as hemicellulose, cellulose and lignin, commonly present in lignocellulosic biomass, and categorized the fourth component as lipid waxes, oils, etc.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Kinetic models based in biomass components for the combustion and pyrolysis of sewage sludge and its compost

Barneto

Carmona

Alfonso

et al. 2009

Journal of Analytical and Applied Pyrolysis

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Section: Tg and Dtg In Sewage Sludge And Its Compostmentioning

confidence: 99%

Section: Pyrolysismentioning

confidence: 99%

“…of components that degrade following parallel reactions [9,10]. In both cases the overall pyrolysis behavior is the combination of the behavior of the individual components [11].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Kinetic models based in biomass components for the combustion and pyrolysis of sewage sludge and its compost

Barneto

Carmona

Alfonso

et al. 2009

Journal of Analytical and Applied Pyrolysis

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“…The kinetics study was conducted at different temperatures (30,45, and 60 o C) and durations (20,40,60, and 80 min). The ratio of adsorbent to dye solution and pH was the same as in isotherm adsorption; the initial concentration of dye was 250 mg=L.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Kinetics of ionic dyes adsorption with magnetic‐modified sewage sludge

2013

Env Prog and Sustain Energy

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Sewage sludge is modified by pretreatment with a synthetic ferrite process, which turns the sewage sludge into an absorbent for ionic dyes and the adsorbent can be removed by a magnetic field. When Fe 3 O 4 is synthesized on the surface of sewage sludge, the surface potential of particles is manipulated by adjusting the pH. For Fe 3 O 4 synthesis, the molar ratio of Fe 21 to Fe 31 was 1. In our experiment, two magnetic adsorbents are made (A5 and A10) using 5 g and 10 g doses of sewage sludge, respectively. A5 is used to adsorb Procion Red Mx-5B (PR) and A10 is used to adsorb Methylene Blue (MB). The specific surface area of A5 is 49.08 m 2 =g. The ideal pH for PR adsorption is found to be 3 with a maximum adsorption capacity of 0.031 mmol=g (18.83 mg=g). For A10, the specific surface area is 39.84 m 2 =g, and ideal pH is 6 for MB adsorption with maximum adsorption capacity being 0.078 mmol=g (25.06 mg=g). The kinetics study reveals that MB and PR adsorptions fit well a pseudosecond-order kinetic model, and the values of activation energy calculated from the rate constants are 42.82 kJ=mol and 47.19 kJ=mol for MB and PR, respectively. MB and PR adsorption can be characterized as activated chemical adsorption.

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Pyrolysis of predried dyeing sludge: Weight loss characteristics, surface morphology, functional groups and kinetic analysis

Wang

Xu²,

Cao

et al. 2021

Can J Chem Eng

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The weight loss characteristics, surface morphology, functional group, and kinetic parameters of predried dyeing sludge (PDS) pyrolysis was studied for the first time in this paper. The contents of both volatile matter and organic matter in PDS char both decreased with the increase of pyrolysis temperature. The PDS pyrolysis process can be divided into four stages: S 1 (30 C-180 C)-water evaporation, S 2 (180 C-500 C)-decomposition of organic compounds such as aliphatic compounds and biomass fibres, S 3 (500 C-900 C)-decomposition of the former stage residues, and S 4 (900 C-1350 C)-decomposition of carbonaceous material remaining in the char and vaporization of partial ash. With the increase

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Describing sewage sludge pyrolysis kinetics by a combination of biomass fractions decomposition

Cited by 78 publications

References 22 publications

Kinetic models based in biomass components for the combustion and pyrolysis of sewage sludge and its compost

Kinetic models based in biomass components for the combustion and pyrolysis of sewage sludge and its compost

Kinetics of ionic dyes adsorption with magnetic‐modified sewage sludge

Pyrolysis of predried dyeing sludge: Weight loss characteristics, surface morphology, functional groups and kinetic analysis

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