Use of two-stage anaerobic treatment for distillery waste

Blonskaja, Viktoria; Menert, Anne; Vilu, Raivo

doi:10.1016/s1093-0191(02)00038-2

Cited by 91 publications

(34 citation statements)

References 5 publications

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“…Laboratory-scale anaerobic digester model (W8, Armfield, UK) was used for experiments. The model was of two independently operating units of 4,8 L each The gas off-take from each reactor was taken into a volumetrically calibrated collector vessel (300 ml) operating by water displacement [10,11].…”

Section: Methodsmentioning

confidence: 99%

An Investigation of Impact of Iron and Aluminium Addition on the Anaerobic Digestion Process

2017

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In this study, the impact of iron and aluminium salts addition on anaerobic digestion process was investigated. Mixture of primary and activated sludge collected at Vilnius wastewater treatment plant in Lithuania was digested under laboratory conditions by using anaerobic digester (W8, Amfield, UK). To compare the relative digestibility of iron-dosed (Fe-dosed) and aliuminium-iron-dosed (Al-Fe-dosed) sludge with un-dosed sludge three continuous experiments were made. Results showed that iron and aliuminium negatively impacted anaerobic digestion process by reducing the volume of biogas produced. Fe-dosed sludge produced 20-50% less biogas and Al-Fe-dosed sludge produced 30-40% less biogas in comparison to the same un-dosed sludge. VS destruction decreased during dosing of Fe or/and Al salt. Biogas composition was not measured during the experiments. KEYWORDSWastewater sludge (primary and activated sludge), lab-scale anaerobic digestion, aliuminium salt, iron salt, biogas production.

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Section: Methodsmentioning

confidence: 99%

An Investigation of Impact of Iron and Aluminium Addition on the Anaerobic Digestion Process

2017

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“…COD destruction efficiencies during the methanogenic stage were relatively low at 43-53% due to the high initial S°/X°value of 2 gCOD/gVSS, and accordingly are not representative of continuous flow digestion which operates at SRTs of 15 days and loadings of 0.15-0.30 gCOD/gVSS-d. To compare the performance of singlestage vs. two-stage digestion, energy outcome from both systems was calculated using the following assumptions: theoretical methane yield of 0.35 L CH 4 /gCOD consumed (STP), energy content of hydrogen and methane of 142 kJ/g hydrogen (equivalent to 12.8 kJ/L hydrogen ) (Cai et al, 2004) and 50 kJ/g methane (equivalent to 35.8 kJ/L methane ) (Ogden, 2002), respectively, and COD destruction efficiency of 80% in the single stage anaerobic digestion process and an overall COD destruction efficiency of 90% in the two-stage process (Blonskaja et al, 2003;Vinas et al, 1993;Hafez et al, 2010b). One liter of thin stillage in a single-stage continuous-flow anaerobic digestion process generates 38.5 L of methane which is equivalent to 1380 kJ.…”

Section: Hydrogen and Methane Energy Yieldsmentioning

confidence: 99%

Comparative assessment of single-stage and two-stage anaerobic digestion for the treatment of thin stillage

Nasr

Elbeshbishy

Hafez

et al. 2012

Bioresource Technology

143

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a b s t r a c tA comparative evaluation of single-stage and two-stage anaerobic digestion processes for biomethane and biohydrogen production using thin stillage was performed to assess the impact of separating the acidogenic and methanogenic stages on anaerobic digestion. Thin stillage, the main by-product from ethanol production, was characterized by high total chemical oxygen demand (TCOD) of 122 g/L and total volatile fatty acids (TVFAs) of 12 g/L. A maximum methane yield of 0.33 L CH 4 /gCOD added (STP) was achieved in the two-stage process while a single-stage process achieved a maximum yield of only 0.26 L CH 4 /gCO-D added (STP). The separation of acidification stage increased the TVFAs to TCOD ratio from 10% in the raw thin stillage to 54% due to the conversion of carbohydrates into hydrogen and VFAs. Comparison of the two processes based on energy outcome revealed that an increase of 18.5% in the total energy yield was achieved using two-stage anaerobic digestion.

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“…Two-stage processes and hybrid reactors. A twostage process with an anaerobic filter followed by a UASB reactor was investigated by Blonskaja et al (2003). The acidogenic and methanogenic phases were clearly separated ensuring better conditions for the methanogens.…”

Section: Article In Pressmentioning

confidence: 99%

Wastewater treatment in molasses-based alcohol distilleries for COD and color removal: A review

Satyawali

Balakrishnan

2008

Journal of Environmental Management

403

194

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Use of two-stage anaerobic treatment for distillery waste

Cited by 91 publications

References 5 publications

An Investigation of Impact of Iron and Aluminium Addition on the Anaerobic Digestion Process

An Investigation of Impact of Iron and Aluminium Addition on the Anaerobic Digestion Process

Comparative assessment of single-stage and two-stage anaerobic digestion for the treatment of thin stillage

Wastewater treatment in molasses-based alcohol distilleries for COD and color removal: A review

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