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Pyrolysis of high a...
Pyrolysis of high ash sewage sludge : Kinetics and thermodynamic analysis using Coats-Redfern method
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- Naqvi, Salman Raza (författare)
- University of Twente, The Netherlands; National University of Sciences & Technology, Pakistan.
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- Tariq, Rumaisa (författare)
- National University of Sciences & Technology, Pakistan
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- Hameed, Zeeshan (författare)
- National University of Sciences & Technology, Pakistan
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- Ali, Imtiaz (författare)
- King Abdulaziz University, Saudi Arabia
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- Naqvi, Muhammad (författare)
- Karlstads universitet,Institutionen för ingenjörs- och kemivetenskaper (from 2013)
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- Chen, Wei-Hsin (författare)
- National Cheng Kung University, Taiwan
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- Ceylan, Selim (författare)
- Ondokuz Mayıs University, Turkey
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- Rashid, Harith (författare)
- Eindhoven University of Technology, The Netherlands
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- Ahmad, Junaid (författare)
- Free University of Bolzano, Italy
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- Taqvi, Syed A (författare)
- NED University of Engineering and Technology, Pakistan; Universiti Teknologi PETRONAS, Malaysia
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- Shahbaz, Muhammad (författare)
- University of Gujrat, Pakistan
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University of Twente, The Netherlands; National University of Sciences & Technology, Pakistan National University of Sciences & Technology, Pakistan (creator_code:org_t)
- Elsevier Ltd, 2019
- 2019
- Engelska.
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Ingår i: Renewable energy. - : Elsevier Ltd. - 0960-1481 .- 1879-0682. ; 131, s. 854-860
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This study aims to investigate the thermo-kinetics of high-ash sewage sludge using thermogravimetric analysis. Sewage sludge was dried, pulverized and heated non-isothermally from 25 to 800 °C at different heating rates (5, 10 and 20 °C/min) in N2 atmosphere. TG and DTG results indicate that the sewage sludge pyrolysis may be divided into three stages. Coats-Redfern integral method was applied in the 2nd and 3rd stage to estimate the activation energy and pre-exponential factor from mass loss data using five major reaction mechanisms. The low-temperature stable components (LTSC) of the sewage sludge degraded in the temperature regime of 250–450 °C while high-temperature stable components (HTSC) decomposed in the temperature range of 450–700 °C. According to the results, first-order reaction model (F1) showed higher Ea with better R2 for all heating rates. D3, N1, and S1 produced higher Ea at higher heating rates for LTSC pyrolysis and lower Ea with the increase of heating rates for HTSC pyrolysis. All models showed positive ΔH except F1.5. Among all models, Diffusion (D1, D2, D3) and phase interfacial models (S1, S2) showed higher ΔG as compared to reaction, nucleation, and power-law models in section I and section II.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Nyckelord
- Kinetics
- Pyrolysis
- Sewage sludge
- Thermodynamic parameters
- Thermogravimetric analysis
- Chemical Engineering
- Kemiteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Naqvi, Salman Ra ...
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Tariq, Rumaisa
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Hameed, Zeeshan
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Ali, Imtiaz
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Naqvi, Muhammad
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Chen, Wei-Hsin
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visa fler...
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Ceylan, Selim
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Rashid, Harith
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Ahmad, Junaid
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Taqvi, Syed A
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Shahbaz, Muhamma ...
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visa färre...
- Om ämnet
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Kemiteknik
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Renewable energy
- Av lärosätet
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Karlstads universitet