Tar-free fuel gas production from high temperature pyrolysis of sewage sludge

Zhang, Leguan; Xiao, Bo; Hu, Zhiquan; Liu, Shiming; Chen, Gong; He, Peng; Sun, Lei

doi:10.1016/j.wasman.2013.10.020

Cited by 28 publications

(9 citation statements)

References 13 publications

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“…The rate of carbonate found is 16.55%, which is the same result 75 obtained by Aadraoui et al [36]. NCV found is 1888Kcal.kg-1, the value of NCV compared with results found in other studies; Husillos-Rodriguez et al [37] found 1999 Kcal kg -1 , Zhang et al [38] found 5972 Kcal kg -1 , Samolada et al [39] found 3487 and Zhao et al [40] found 4497 Kcal kg -1 . This can be explained by the presence of significant amounts of soil in the sludge.…”

Section: Physical Characteristicssupporting

confidence: 85%

Characterization of sludge waste products from wastewater treatment plant of Khenifra city in Morocco

Aadraoui

Rais

Baghdadi

et al. 2019

Environmental Research and Technology

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To promote the utilization of sewage sludge as alternative building materials, a study was carried out to examine the characteristics of sewage sludge from wastewater treatment plant of khenifra city, Morocco. Experiments were performed for determining the mineralogical composition, chemical properties, loss of weight, the rate of the calcium carbonate and moisture. Furthermore, the geotechnical parameters deal with the Atterberg limits, water content and Sand equivalent of the sewage sludge material. The purpose of this paper is to present the available information on the various components of sewage sludge to explore the possibility of exploiting this waste in building materials Results show that sewage sludge has neutral pH value around 6.93 and contains organic matter. Moreover, the sludge is composed of a significant amount of oxides and metals. The value of net calorific value (NCV) is 1888.91 Kcal kg -1 . As well as, the mineralogical composition of sludge has been determined by X-rays diffraction (XRD) show the presence of quartz (SiO2), hematite (Fe2O3), aluminum oxide (Al2O3) and calcite (CaO3).The result of the geotechnical properties of sewage sludge obtained indicates a very high value for a liquid limit of 126%, a plastic limit of 100% and the plasticity index of 25% and 128% water content. Based on the data obtained from the characteristics of sewage sludge produced by wastewater treatment plant in the Khenifra city, the utilization of sewage sludge into building materials such as in brick making, ceramics making and in the manufacture of cement are possible, because sludge composition is similar to the raw to construction materials.

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Section: Physical Characteristicssupporting

confidence: 85%

Characterization of sludge waste products from wastewater treatment plant of Khenifra city in Morocco

Aadraoui

Rais

Baghdadi

et al. 2019

Environmental Research and Technology

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“…Recently, there have been studies performed on hydrodeoxygenation of waste oil [29,30] with the aim of synthesizing oxygen-free biodiesel and to overcome the low oxidation stability of the products obtained from the transesterification process of waste oils, e.g. hydrodeoxygenation treatment of waste cooking oil over nanocatalyst by Zhang et al [31], and hydrodeoxygenation of waste fat over a Pt/alumina catalyst by Madsen et al [32]. However, high operation cost could be needed for this method due to the need to use a huge amount of hydrogen gas.…”

Section: Hydrotreatingmentioning

confidence: 99%

“…Although pyrolysis process for waste oil treatment has not been fully exploited, this process has been receiving considerable attentions from researchers nowadays on its potential to produce energy-dense products from waste materials [47]. Recently, there were findings on the pyrolysis transformation of sewage sludge into tar-free fuel gas [31] and polyaromatic hydrocarbons [48]. There were also pyrolysis studies on plastic wastes, catechol, acetylene and ethylene, and co-pyrolysis of the scrap tires with waste lubricating oil by other researchers [49][50][51][52].…”

Section: Pyrolysismentioning

confidence: 99%

Progress in waste oil to sustainable energy, with emphasis on pyrolysis techniques

Lam

Liew

Jusoh

et al. 2016

Renewable and Sustainable Energy Reviews

285

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a b s t r a c tThis paper begins with a review on the current techniques used for the treatment and recovery of waste oil, which is then followed by an extensive review of the recent achievements in the sustainable development and utilization of pyrolysis techniques in energy recovery from waste oils. The advantages and limitations shown by the use of pyrolysis technique and other current techniques were discussed along with the future research that can be performed on the pyrolysis of waste oil. It was revealed that the current techniques (transesterification, hydrotreating, gasification, solvent extraction, and membrane technology) are yet to be sustainable or completely feasible for waste oil treatment and recovery. It was established that pyrolysis techniques offer a number of advantages over other existing techniques in recovering both the energetic and chemical value of waste oil by generating potentially useful pyrolysis products suitable for future reuse. In particular, microwave pyrolysis shows a distinct advantage in providing a rapid and energy-efficient heating compared to conventional pyrolysis techniques, and thus facilitating increased production rates. It was found that microwave pyrolysis of waste oil showed good performance with respect to product yield, reaction time, energy consumption, and product quality, and thus showing exceptional promise as a sustainable means for energy recovery from waste oils. Nevertheless, it was revealed that some important characteristics of the pyrolysis process have yet to be fully investigated. It was thus concluded that more studies are needed to extend existing understanding in the optimal reaction and process parameters in order to develop the pyrolysis technology to be a sustainable and commercially viable route for energy recovery from problematic waste oils.

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“…According to Zhang et al (2014b), pyrolysis of sewage sludge was studied in a free-fall reactor at 1000-1400 °C. The results illustrated that high temperature pyrolysis of sewage sludge was efficient for producing tarfree fuel gas.…”

Section: Membrane Biological Treatmentmentioning

confidence: 99%

Thermal Effects

Zhang

Zeng

2015

Water Environment Research

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This review focuses on the research literatures published in 2014 relating to topics of thermal effects in water pollution control. This review is divided into the following sections: anaerobic wastewater and sludge treatment, biological nitrogen and phosphorus removal, membrane biological treatment, sewage sludge pyrolysis, natural treatment, resource recovery, electrolysis, oxidation and adsorption treatment.

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Tar-free fuel gas production from high temperature pyrolysis of sewage sludge

Cited by 28 publications

References 13 publications

Characterization of sludge waste products from wastewater treatment plant of Khenifra city in Morocco

Characterization of sludge waste products from wastewater treatment plant of Khenifra city in Morocco

Progress in waste oil to sustainable energy, with emphasis on pyrolysis techniques

Thermal Effects

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