Thermal characterisation of the products of wastewater sludge pyrolysis

Hossain, Mustafa K.; Strezov, Vladimir; Nelson, Peter F.

doi:10.1016/j.jaap.2008.09.010

Cited by 90 publications

(59 citation statements)

References 18 publications

(18 reference statements)

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“…Pyrolysis and gasification provide new opportunities for the conversion of the sewage sludge to clean fuel with no environmental impact. Both pyrolysis [6][7][8][9][10] and gasification [11][12][13] have been investigated by several researches and they all suggest that wastewater sludge has the potential for use as an energy source if processed in gasification or pyrolysis systems. The pyrolysis and gasification can reduce volume and fix heavy metal in the solid residue, while producing valuable product in the form of oil and syngas.…”

Section: Introductionmentioning

confidence: 99%

High temperature steam gasification of wastewater sludge

et al. 2010

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Section: Introductionmentioning

confidence: 99%

High temperature steam gasification of wastewater sludge

et al. 2010

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“…Actually, to protect the aquatic environment, many methods, such as physics ways (adsorption (Lu et al 2004), nanofiltration (Barredo-Damas et al 2005), and electrocoagulation (Daneshvar et al 2006)), chemical ways (combustion (Hossain et al 2009) and electrochemical methods (Radha et al 2009)) and biologic ways (aerobic (Khelifi et al 2008), anaerobic (Georgiou et al 2005), and aerobic-anaerobic (Zheng et al 2009)) have been employed to treat dyes solved in wastewater. Barredo-Damas et al (2005) treated textile industry effluent by means of combination of ultrafiltration followed by a final nanofiltration stage.…”

Section: Introductionmentioning

confidence: 99%

Visible Light Induced Photocatalytic Degradation of Methyl Orange by Polythiophene/TiO2 Composite Particles

Zhu

Jiang

et al. 2010

Water Air Soil Pollut

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The adsorption and photocatalytic degradation of methyl orange (MO) aqueous solution under visible light illumination by polythiophene/titanium dioxide (PTh/TiO 2 ) composite particles were studied. The experimental observations from UV-vis spectrophotometer indicate that MO molecules were degraded in a different degree during the visible light-induced photocatalysis reaction. We propose a new degradation mechanism of MO during the photocatalytic reaction, based on blue shift of UV-vis absorption spectra of MO solution and other researches. The data from total organic carbon analyzer definitely prove that MO can be mineralized to CO 2 and H 2 O, and some intermediate products are generated during the photocatalysis degradation of MO.

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“…The liquid fraction can also be modified to an alternative energy source, or it may be applied as raw material for petrochemical production [19,20].…”

Section: Introductionmentioning

confidence: 99%

Semi-pilot scale sewage sludge pyrolysis and characterization of obtained fractions by thermal analysis

Viana

Rangel

Júnior

et al. 2015

J Therm Anal Calorim

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Sewage sludge pyrolysis is an alternative to incineration and presents as advantages the generation of three fractions: gas (non-condensable volatiles), liquid (condensable volatiles) and solid (carbonaceous coke). In this context, the purpose of the present study is to quantify and to characterize by thermal analysis the fractions produced by sewage sludge pyrolysis in semi-pilot scale. The semi-pilot pyrolysis was performed in two steps, the first dynamic up to 500°C, followed by an isothermal step at this temperature for 3 h. The solid and liquid fractions produced were analyzed by TG/DTG/DTA, and the volatiles were analyzed by thermogravimetry coupled to mass spectrometry (TG-MS). The influence of different pyrolysis conditions (dynamic and isothermal) was verified by differential thermal analysis (DTA) characterization and by the higher heating value (HHV) of the liquid fractions produced by sludge pyrolysis. In total, 60.1, 28.6 and 11.3 % of the sludge initial mass were obtained, respectively, as solid, liquid and gas pyrolytic fractions. The liquid fraction was composed of aqueous and oily phases. By TG-MS, the volatile compounds detected in pyrolysis were as follows: H 2 O, C 3 H 6 , CO 2 , NO 2 , C 4 H 8 , SO 2 , C 6 H 6 and C 7 H 8 . The aliquots obtained at higher time periods by isothermal pyrolysis at 500°C showed higher DTA exothermic peaks and higher HHV values as well. Sewage sludge isothermal pyrolysis at 500°C produces a liquid fraction with HHV of 36.2 MJ kg -1 , indicating that it can be used as renewable energy source. A good correlation exists between total DTA peak area of the oily fractions obtained from sewage sludge pyrolysis and respective HHV values, indicating that it can be used to estimate these values from corresponding DTA curves.

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Thermal characterisation of the products of wastewater sludge pyrolysis

Cited by 90 publications

References 18 publications

High temperature steam gasification of wastewater sludge

High temperature steam gasification of wastewater sludge

Visible Light Induced Photocatalytic Degradation of Methyl Orange by Polythiophene/TiO2 Composite Particles

Semi-pilot scale sewage sludge pyrolysis and characterization of obtained fractions by thermal analysis

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