Effect of low temperature thermal pre-treatment on the solubilization of organic matter, pathogen inactivation and mesophilic anaerobic digestion of poultry sludge

Espinoza, Juan Enrique Ruiz; Méndez-Contreras, Juan Manuel; Alvarado-Lassman, Alejandro; Martínez-Delgadillo, Sergio A.

doi:10.1080/10934529.2012.689237

Cited by 31 publications

(7 citation statements)

References 14 publications

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“…The final concentration of VFA in T1 was 3.99 § 0.21 g L ¡1 ; some studies suggest that this level does not inhibit mesophilic methane production. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] The increment of OLR in T2 and T3 is related to the decrease in pH levels (6 and 5.7, respectively) and the final concentrations of VFA (5.06 and 5.53 g L ¡1 , respectively). The maximum decrease in pH achieved in T3 was presented on day 52 of experimental operation and remained in the range of 5.7 § 0.01 until the end of the experiment (Fig.…”

Section: Effect Of the Olr In The Behavior Of The Ph And Vfasmentioning

confidence: 99%

“…[7,12,15,16] In this regard, physicochemical sludges generated in the treatment of wastewater from a poultry slaughterhouse are a potential resource for the methane production, because it is a waste with high concentration of organic matter, abundance and low cost feedstock. [17] However, few researchers have focused on studying this waste and anaerobic digestion. For example, it is known that anaerobic digestion was used to stabilize the physicochemical sludge generated in the treatment of wastewater from a poultry slaughterhouse, with an OLR of 1.76 KgVS m ¡3 d ¡1 , [18] while Ruiz-Espinoza et al [17] tested OLRs of 1, 2 and 3 KgVS m ¡3 d ¡1 , respectively, watching these load levels achieve a biogas production on average of 2.14, 3.6 and 5.2 L d ¡1 , respectively, both studies conducted in a CSTR.…”

Section: Introductionmentioning

confidence: 99%

“…[17] However, few researchers have focused on studying this waste and anaerobic digestion. For example, it is known that anaerobic digestion was used to stabilize the physicochemical sludge generated in the treatment of wastewater from a poultry slaughterhouse, with an OLR of 1.76 KgVS m ¡3 d ¡1 , [18] while Ruiz-Espinoza et al [17] tested OLRs of 1, 2 and 3 KgVS m ¡3 d ¡1 , respectively, watching these load levels achieve a biogas production on average of 2.14, 3.6 and 5.2 L d ¡1 , respectively, both studies conducted in a CSTR.…”

Section: Introductionmentioning

confidence: 99%

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Influence of organic loading rate on methane production in a CSTR from physicochemical sludge generated in a poultry slaughterhouse

López-Escobar

Martínez-Hernández

Corte-Cano

et al. 2014

Journal of Environmental Science and Health, Part A

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The influence of the increase of the organic loading rate (OLR) on methane production in a continuous stirred-tank reactor (CSTR) from physicochemical sludge generated in a poultry slaughterhouse was evaluated. Total solid (TS) to obtain OLR of 1, 5, 10 and 15 g VS L(-1) day(-1), with hydraulic retention times of 29, 6, 6 and 4, respectively, were conditioned. The results showed a decrease in pH levels and an increase in the theoretical volatile fatty acids (VFA). While the yield of methane production decreased from 0.48 to 0.10 LCH4/g VSremoved, respectively, the OLR-10 managed on average 38% removal of volatile solids (VS) and a yield biogas production of 0.81 Lbiogas g(-1) VSremoved and 1.35 L day(-1). This suggests that the OLR increases in an anaerobic system from physicochemical sludge only inhibits the methanogenic metabolism, because there is still substrate consumption and biogas production.

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Section: Effect Of the Olr In The Behavior Of The Ph And Vfasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of organic loading rate on methane production in a CSTR from physicochemical sludge generated in a poultry slaughterhouse

López-Escobar

Martínez-Hernández

Corte-Cano

et al. 2014

Journal of Environmental Science and Health, Part A

Self Cite

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“…Until now the literature mostly focused on the characterization of the rheological behavior of sludges at low (TS<4%) and moderate (4 < TS<17%) solid concentration (Baroutian et al, 2013;Baudez et al, 2013;Dong et al, 2011;Eshtiaghi et al, 2013;Farno et al, 2014;Jiang et al, 2014;Keiding et al, 2001;Lolito et al, 1997;Ma et al, 2014;Manoliadis and Bishop, 1984;Moeller and Torres, 1997;Mori et al, 2006;Pevere et al, 2009;Ratkovich et al, 2013;Ruiz-Espinoza et al, 2012;S egalen et al, 2015;Wang et al, 2016Wang et al, , 2012. Limited attention was paid on pasty and highly concentrated sludge mainly because of the difficulties to carry out relevant measurements (Agoda-Tandjawa et al, 2013;Battistoni, 1997;Baudez et al, 2016;Baudez and Coussot, 2001;Chaari et al, 2003;Charlou, 2014;Jiang et al, 2014;Liang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Experimental rheological procedure adapted to pasty dewatered sludge up to 45 % dry matter

et al. 2018

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Wastewater sludge are characterized by complex rheological properties, strongly dependent on solids concentration and temperature. These properties are required for process hydrodynamic modelling but their correct measurement is often challenging at high solids concentrations. This is especially true to model the hydrodynamic of dewatered sludge during drying process where solids content (TS) increases with residence time. Indeed, until now, the literature mostly focused on the rheological characterization of sludge at low and moderate TS (between 4 and 8%). Limited attention was paid to pasty and highly concentrated sludge mainly because of the difficulties to carry out the measurements. Results reproducibility appeared to be poor and thus may not be always fully representative of the effective material properties. This work demonstrates that reproducible results can be obtained by controlling cracks and fractures which always take place in classical rotational rheometry. In that purpose, a well-controlled experimental procedure has been developed, allowing the exact determination of the surface effectively sheared. This surface is calculated by scattering a classical stress sweep with measurements at a reference strain value. The implementation of this procedure allows the correct determination of solid-like characteristics from 20 to 45% TS but also shows that pasty and highly concentrated sludge highlight normal forces caused by dilatancy. Moreover the surface correction appears to be independent of TS in the studied range.

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“…Different methods have been used to inactivate the helminths ova and other potential pathogens from sludge such as ponding, aerobic digestion, anaerobic digestion, lime stabilisation, heat treatment depending on the availability of resources and feasibility (Mendez et al, 2002;Bina et al, 2004;Capizzi-Banas et al, 2004;WHO, 2006;MendezContreras et al, 2009;Maya et al, 2010;Maya et al, 2010;Navarro and Jimenez, 2011;Reinoso et al, 2011;Toze and Sidhu, 2011;Ruiz-Espinoza et al, 2012;Endale et al, 2012;Konate et al, 2013a) (Table 2.3). The helminth inactivation rate of these sludge treatment methods varied between studies.…”

Section: Preventive Measures Usedmentioning

confidence: 99%

Detection of viable hookworm ova from wastewater and sludge

Gyawali¹

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Infectious helminths are a worldwide major public health problem. In terms of morbidity, approximately 3 × 10 9 people are infected by soil-transmitted helminths (STHs) influencing rates of malnutrition and failure to thrive. All of this increases the global disease burden (GDB) by up to 5.9 × 10 6 Daily Adjusted Life Years (DALYs). Helminth infections are more often seen as a major public health issue for developing countries however, concerns have been expressed in many of the developed nations because of the increased use of treated wastewater and sludge with no clear way of knowing the infection potential that can be attributed from such water.Guidelines have been established to minimise the potential public health risk associated with wastewater and sludge reuse. For example, the WHO guideline specified ≤ 1 ova (Ascaris lumbricoides) per L liquid (wastewater) or 4 g dry solid (sludge) for unrestricted use. Various wastewater treatment processes have been recommended to remove the helminths ova from wastewater depending upon its reuse. However, detection methods used to quantify viable helminths ova from wastewater has limitations. Therefore there is always a potential public health risk associated with reuse of wastewater and sludge.In this research, a real-time PCR method was developed. The new PCR method is rapid and specific. The method was found to be able to detect less than one ovum in one litre treated wastewater and approximately four ova in one litre raw wastewater and ~ 4 g sludge.The real-time PCR method was modified to a quantitative PCR (qPCR) method and further used to quantify hookworm ova from wastewater and sludge. The qPCR had estimated an average of 1.1, 8.6 and 67.3 ova for treated wastewater that was seeded with 1, 10 and 100 ova, respectively. The gene copy numbers obtained for 1, 10 and 100 ova by qPCR varied significantly (P < 0.05) within the tested samples indicating that absolute quantification of ova may not be accurate. Despite the difficulty quantifying accurate numbers of hookworm ova, the lower limit of quantification (LLOQ) of the qPCR method was 30 gene copies. This was a lot less than the gene copies produced by one ovum. Therefore, the qPCR method has potential to use for complying with wastewater guidelines.. iiAlthough the overall aim of this research was to develop a sensitive and specific method for quantitative detection of viable hookworm ova from wastewater, the importance of recovering the ova from wastewater and sludge samples for accurate detection was identified. While determining appropriate recovery rates was not an aim of this research, a suitable method that could be used to standardise research outcomes for further study was established. Therefore, ova recovery rate by different rapid methods was evaluated for further experiments. The result indicated that the ova recovery rate was higher for the treated wastewater (0.2 -50%) than the raw wastewater (0.3 -35%) and sludge (0.02 -4.7%) samples. A significant difference (P < 0.05) was observed between...

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Effect of low temperature thermal pre-treatment on the solubilization of organic matter, pathogen inactivation and mesophilic anaerobic digestion of poultry sludge

Cited by 31 publications

References 14 publications

Influence of organic loading rate on methane production in a CSTR from physicochemical sludge generated in a poultry slaughterhouse

Influence of organic loading rate on methane production in a CSTR from physicochemical sludge generated in a poultry slaughterhouse

Experimental rheological procedure adapted to pasty dewatered sludge up to 45 % dry matter

Detection of viable hookworm ova from wastewater and sludge

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