Slow-rate devolatilization of municipal sewage sludge and texture of residual solids.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F21%3A00544243" target="_blank" >RIV/67985858:_____/21:00544243 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27730/21:10247859 RIV/60461373:22320/21:43922277

Výsledek na webu

<a href="http://hdl.handle.net/11104/0321886" target="_blank" >http://hdl.handle.net/11104/0321886</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11814-021-0847-8" target="_blank" >10.1007/s11814-021-0847-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Slow-rate devolatilization of municipal sewage sludge and texture of residual solids.

Popis výsledku v původním jazyce

Ash-rich sludge samples originating in four large plants were analyzed and employed to explore primarily the kinetics and the chemistry of devolatilization. A gravimetric, slowly increasing-temperature method was used in the range 298–1,123 K in a milieu of nitrogen. As an intricate combination of numerous (bio)organic and inorganic compounds, the dry sludge commences devolatilizing at approximately 418 K. The bulk of organic matter is released up to 823 K, at the rate becoming very slow thereafter. Basic constituents of the product gas are CO2, CO, H2, and CH4 with undesired nitrogenous, sulfurous, and chloro compounds. The residual solids contain significant amounts of organic matter/carbon and, on account of their favorable textural characteristics, they can be viewed as promising sorbents or catalysts. Kinetic triad was inferred from the experimental data: the model is well-capable of simulating the process of devolatilization and can be used for design considerations. An explicit equation, based upon a tractable approximation to the temperature integral (for [E/(RT)]≥0.1), has been verified and proposed for predicting the maximum reaction rate temperature. Remarkable differences in thermal behavior were explored in detail between the sludge and the alkali bicarbonates.

Název v anglickém jazyce

Slow-rate devolatilization of municipal sewage sludge and texture of residual solids.

Popis výsledku anglicky

Ash-rich sludge samples originating in four large plants were analyzed and employed to explore primarily the kinetics and the chemistry of devolatilization. A gravimetric, slowly increasing-temperature method was used in the range 298–1,123 K in a milieu of nitrogen. As an intricate combination of numerous (bio)organic and inorganic compounds, the dry sludge commences devolatilizing at approximately 418 K. The bulk of organic matter is released up to 823 K, at the rate becoming very slow thereafter. Basic constituents of the product gas are CO2, CO, H2, and CH4 with undesired nitrogenous, sulfurous, and chloro compounds. The residual solids contain significant amounts of organic matter/carbon and, on account of their favorable textural characteristics, they can be viewed as promising sorbents or catalysts. Kinetic triad was inferred from the experimental data: the model is well-capable of simulating the process of devolatilization and can be used for design considerations. An explicit equation, based upon a tractable approximation to the temperature integral (for [E/(RT)]≥0.1), has been verified and proposed for predicting the maximum reaction rate temperature. Remarkable differences in thermal behavior were explored in detail between the sludge and the alkali bicarbonates.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Korean Journal of Chemical Engineering

ISSN

0256-1115

e-ISSN

1975-7220

Svazek periodika

38

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

KR - Korejská republika

Počet stran výsledku

10

Strana od-do

2072-2081

Kód UT WoS článku

000671772100001

EID výsledku v databázi Scopus

2-s2.0-85110367065