Long-term, high-rate anaerobic biological treatment of whey wastewaters at psychrophilic temperatures

McHugh, Sharon; Collins, Gavin; O’Flaherty, Vincent

doi:10.1016/j.biortech.2005.07.020

Cited by 81 publications

(47 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, a slightly better COD removal obtained by Najafpour et al [40], at a short HRT of 2 days similar to that of Calli and Yukselen [90], but with almost double influent COD concentration and OLR, at 35 °C. High COD removal rate also achieved by McHugh et al [84], by high organic load influent treatment, at 20 °C, proving that satisfactory removal COD can be achieved at low temperatures. ASBR has also been studied for CW treatment and the results have been promising, showing the real potential of this system as an alternative to continuous flow [116,123].…”

Section: Conventional (Single Phase) Anaerobic Treatment Of Cheese Wheymentioning

confidence: 53%

“…Regarding the temperature of digestion, most research on CW wastewater treatments, have been conducted under mesophilic and thermophilic conditions, although psychrophilic digestion can lead to lower cost treatment and can be a more suitable option for small scale cheese producers [84]. A preliminary study on sequential anaerobic and aerobic treatment of CW wastewaters, at psychrophilic temperatures in a single digester SBR of 0.5 L volume, was carried out by Frigon et al [130].…”

Section: Anaerobic/aerobic Reactorsmentioning

confidence: 99%

See 1 more Smart Citation

Biotechnological Utilization with a Focus on Anaerobic Treatment of Cheese Whey: Current Status and Prospects

2012

View full text Add to dashboard Cite

Abstract:Cheese whey utilization is of major concern nowadays. Its high organic matter content, in combination with the high volumes produced and limited treatment options make cheese whey a serious environmental problem. However, the potential production of biogas (methane), hydrogen or other marketable products with a simultaneous high COD reduction through appropriate treatment proves that cheese whey must be considered as an energy resource rather than a pollutant. The presence of biodegradable components in the cheese whey coupled with the advantages of anaerobic digestion processes over other treatment methods makes anaerobic digestion an attractive and suitable treatment option. This paper intends to review the most representative applications of anaerobic treatment of cheese whey currently being exploited and under research. Moreover, an effort has been made to categorize the common characteristics of the various research efforts and find a comparative basis, as far as their results are concerned. In addition, a number of dairy industries already using such anaerobic digestion systems are presented.

show abstract

Section: Conventional (Single Phase) Anaerobic Treatment Of Cheese Wheymentioning

confidence: 53%

Section: Anaerobic/aerobic Reactorsmentioning

confidence: 99%

Biotechnological Utilization with a Focus on Anaerobic Treatment of Cheese Whey: Current Status and Prospects

2012

View full text Add to dashboard Cite

show abstract

“…In their case, propionate degradation resumed only when temperature was raised at 29°C. High residual COD of 150-300 mg L À1 were also reported by McHugh et al (2006), however it was presumed to consist of non-biodegradable material or soluble microbial product, since no significant amount of VFA were present in the effluent. A close monitoring of the biogas production during the anaerobic step and sCOD removal during the aerobic step was performed during the last three cycles of Phase 2.…”

Section: Digester Performance During Phasementioning

confidence: 70%

“…There is a need for further optimization and advancement of psychrophilic digestion, in order to increase the applicability of the process and to maximize the understanding of the microbiology of the process (McHugh et al, 2006). Preliminary studies of the anaerobic and aerobic sequential treatment of whey wastewater at psychrophilic temperature in a single digester was demonstrated in 0.5 L SBR (Frigon et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

The treatment of cheese whey wastewater by sequential anaerobic and aerobic steps in a single digester at pilot scale

Frigon

Bretón

Bruneau

et al. 2009

Bioresource Technology

View full text Add to dashboard Cite

The treatment of cheese whey wastewater by sequential anaerobic and aerobic steps in a single digester at pilot scale Frigon, J.-C.; Breton, J.; Bruneau, T.; Moletta, R.; Guiot, S. R. The treatment of reconstituted whey wastewater was performed in a 400 L digester at 20°C, with an anaerobic digestion step, followed by a step of aerobic treatment at low oxygen concentration in the same digester. In a first set of 48 cycles, total cycle time (T C ) of 2, 3 and 4 days were tested at varying organic loading rates (OLR). The COD removal reached 89 ± 4, 97 ± 3 and 98 ± 2% at T C of 2, 3 and 4 days and OLR of 0.56, 1.04 and 0.78 gCOD L À1 d À1 , respectively. The activity of the biomass decreased for the methanogenic population, while increasing by 400% for the acidogens, demonstrating a displacement in the predominant trophic group in the biomass bed. A second set of 16 cycles was performed with higher soluble oxygen concentration in the bulk liquid (0.5 mg L À1 ) during the aerobic treatment at a T C of 2 days and an OLR of 1.55 gCOD L À1 d À1 , with a soluble COD removal of 88 ± 3%. The biomass specific activities showed a compartmentalization of the trophic group with methanogenic activity maintained in the biomass bed and a high acidogenic activity in the suspended flocs.Crown

show abstract

“…The psychrophilic anaerobic operation in some laboratory hybrid reactors, utilising whey effl uents with low (COD of 1 kg/ m 3 ) and high (COD of 10 kg/m 3 ) load, showed a bett er COD performance when the OLR reached 70-80 % in the fi rst reactor (at OLRs, expressed as COD, of 0.5-1.3 kg/ (m 3 ·day), in a 20-12 °C range) and more than 90 % in the second (at OLRs, expressed as COD, up to 13.3 kg/ (m 3 ·day), in a 20-14 °C range) (101). If the high-load reactor was operated at 12 °C, COD removal decreased to 50-60 % and biogranule decomposition started.…”

Section: Biological Treatmentmentioning

confidence: 99%

Dairy Wastewaters – General Characteristics and Treatment Possibilities – A Review

Slavov

2017

Food Technol. Biotechnol.

198

View full text Add to dashboard Cite

SummaryThe milk processing industry is one of the world's staple industries, thus the treatment possibilities of dairy effl uents have been att racting more and more att ention. The purpose of the paper is to review contemporary research on dairy wastewater. The origin, categories, as well as liquid by-products and general indicators of real dairy wastewater are described. Diff erent procedures applied for dairy wastewater management are summarised. Att ention is focused on in-factory treatment technologies with the emphasis on biological processes. Aerobic and anaerobic methods with both their advantages and disadvantages are discussed in detail. Consecutive anaerobic and aerobic systems are analysed, too. Finally, future research niches are identifi ed.

show abstract

Long-term, high-rate anaerobic biological treatment of whey wastewaters at psychrophilic temperatures

Cited by 81 publications

References 34 publications

Biotechnological Utilization with a Focus on Anaerobic Treatment of Cheese Whey: Current Status and Prospects

Biotechnological Utilization with a Focus on Anaerobic Treatment of Cheese Whey: Current Status and Prospects

The treatment of cheese whey wastewater by sequential anaerobic and aerobic steps in a single digester at pilot scale

Dairy Wastewaters – General Characteristics and Treatment Possibilities – A Review

Contact Info

Product

Resources

About