Evaluation of a lime-mediated sewage sludge stabilisation process. Product characterisation and technological validation for its use in the cement industry

Rodríguez, N.; Granados, Ricard; Blanco-Varela, María Teresa; Cortina, José Luis; Martínez-Ramírez, S.; Marsal, M.; Guillem, Manel; Puig, J; Fos, Carla; Larrotcha, E.; Flores, J.

doi:10.1016/j.wasman.2011.10.021

Cited by 37 publications

(23 citation statements)

References 23 publications

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“…As reported in many researches, BS can be used as substitute of raw materials (Ahmad et al, 2016;Liu G. et al, 2015;Valderrama et al, 2013). Among the sludge derived from WWTPs, dried biological SS is the most investigated for raw materials recovery in the cement kilns factories (Husillos Rodríguez et al, 2012;Samolada and Zabaniotou, 2014). Moreover, waterworks sludge (Chen et al, 2010), and dried industrial sludge (Arsenovic et al, 2012) have been investigated.…”

Section: Biosolids As Supplementary Cementitious Materialsmentioning

confidence: 99%

“…The inclusion of BS in cement production kilns allows this material to be used not only as supplementary cementitious material but also as an alternative fuel with substantial energy and environmental savings. In fact, its CO 2 emissions are lower than coal (Husillos Rodríguez et al, 2012;Liu G. et al, 2015). Moreover, cocombustion of BS in cement kilns represents an advantage for a low investment cost and rapid implementation (Zabaniotou and Theofilou, 2008).…”

Section: Biosolids As Alternative Fuelsmentioning

confidence: 99%

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Biosolids: What are the different types of reuse?

Collivignarelli

Canato

Abbà

et al. 2019

Journal of Cleaner Production

150

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Section: Biosolids As Supplementary Cementitious Materialsmentioning

confidence: 99%

Section: Biosolids As Alternative Fuelsmentioning

confidence: 99%

Biosolids: What are the different types of reuse?

Collivignarelli

Canato

Abbà

et al. 2019

Journal of Cleaner Production

150

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“…Many studies on adding lime-dried sludge in cement production have been conducted in recent years [6][7][8][9]. Since the basic chemical compositions of lime-dried sludge (mainly including CaO, Al 2 O 3 , Fe 2 O 3 and SiO 2 ) in cement production are very close to the traditional raw materials, lime-dried sludge can partially replace raw materials in the production of cement.…”

Section: Introductionmentioning

confidence: 99%

Feasibility and Carbon Footprint Analysis of Lime-Dried Sludge for Cement Production

Zhao

Lin

et al. 2020

Sustainability

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Cement manufacturing and the treatment of sludge are considered both energy-intensive industries and major greenhouse gas (GHG) emitters. However, there are still few studies on comprehensive carbon footprint analysis for adding municipal sludge in the cement production. In this study, the lime-dried sludge blended with calcium oxide at the mass mixing ratio of 10% was utilized as raw material for the preparation of Portland cement. The chemical and physical properties of sludge were analyzed. A set of carbon footprint calculation methods of lime-drying treatment of sludge and reuse in cement kilns was then established to explore the feasibility of coprocessing lime-dried sludge in cement kilns. The results showed lime-dried sludge containing CaO, SiO2, Al2O3, and Fe2O3 was ideal for cement production as raw material. However, the water content of lime-dried sludge should be strictly limited. The lime-drying process presented the biggest carbon emission (962.1 kg CO2-eq/t sludge), accounting for 89.0% of total emissions. In the clinker-production phase, the lime-dried sludge as raw material substitute and energy source gained carbon credit of 578.8 and 214.2 kg CO2-eq/t sludge, respectively. The sludge used for producing cement clinker could reduce carbon emissions by 38.5% to 51.7%. The addition ratio of lime and stacking time in the sludge lime-drying process could greatly affect the carbon footprint of coprocessing lime-dried sludge in cement kiln.

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“…Hasta el momento, la estabilización de los lodos constituye los mayores costos del tratamiento de aguas residuales (Anjum et al, 2016;Keffala et al 2013). A nivel mundial, se han implementado algunos métodos de estabilización, entre lo que se encuentran deshidratación por centrifugación, (Bedoya-Urrego et al, 2013), compostaje (Awasthi et al, 2018), alcalinización (Husillos et al, 2012;Torres et al, 2009), secado térmico (Silva-Leal et al, 2013) y deshidratación en lechos de secado (Pompeo et al, 2016;Santos et al, 2017;Shanahan et al, 2010;Cota-Espericueta y Ponce-Corral, 2008). La estabilización por deshidratación en lecho de secado es un proceso natural donde el lodo se coloca en compartimientos rectangulares de poca profundidad con fondos porosos, lo cual permite junto con la incidencia de la luz solar y el viento, la deshidratación y desinfección del lodo.…”

Section: Introductionunclassified

Deshidratación de los lodos en lecho de secado y su influencia sobre la actividad biológica de los microorganismos

et al. 2018

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El objetivo del presente trabajo fue evaluar el efecto de la deshidratación de los lodos en lecho de secado sobre las características fisicoquímicas de estos subproductos y la actividad biológica de los microorganismos. Se determinó que después de cinco meses de secado disminuyó la concentración de carbono orgánico, los metales pesados se mantuvieron por debajo del límite permisible y el nitrógeno y fósforo total se mantuvieron constantes. Se evidenció disminución de los aerobios mesófilos, hongos y amilolíticos de siete, seis y una unidad logarítmica de UFC/g respectivamente. La presencia de microorganismos funcionales celulolíticos y solubilizadores de fosfato fue <10 UFC/g. Por otro lado, el 3 % (n=8040) de las cepas evaluadas, fueron productoras de PHA en por lo menos una de las fuentes de carbono evaluadas (sacarosa o glucosa). Los resultados demuestran que el tratamiento de deshidratación en lecho de secado permitió conservar las características fisicoquímicas de los lodos, no obstante, disminuyó la actividad biológica de los microrganismos aerobios mesófilos, amilolíticos y hongos, celulolíticos, solubilizadores de fosfato.

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Evaluation of a lime-mediated sewage sludge stabilisation process. Product characterisation and technological validation for its use in the cement industry

Cited by 37 publications

References 23 publications

Biosolids: What are the different types of reuse?

Biosolids: What are the different types of reuse?

Feasibility and Carbon Footprint Analysis of Lime-Dried Sludge for Cement Production

Deshidratación de los lodos en lecho de secado y su influencia sobre la actividad biológica de los microorganismos

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