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Table 10 Waste, reactor configuration, and operation for the production of VFAs

From: Integrated systems for biopolymers and bioenergy production from organic waste and by-products: a review of microbial processes

Type of waste

Organic content (mg COD l−1)

Reactor type and operating conditions

VFA production

References

Waste activated sludge

18.657

Batch, 55 °C, pH = 8, HRT = 9 days

368 mg COD gVSS−1

[197]

14.878

Batch, 21 °C, HRT = 6 days

339 mg COD l−1

[198]

Primary sludge

22.838

Batch, 21 °C, HRT = 6 days

85 mg COD gVSS−1

[199]

20.631

Batch, 21 °C, pH = 10, room temp, HRT = 5 days

60 mg COD gVSS−1 day−1

[200]

Food waste

91.900

Batch, 37 °C, pH = 5.5

8950 mg COD l−1

[201]

146.1

Batch, 35 °C, HRT = 5 days

5610 mg COD l−1

[202]

Kitchen waste

166.18

Batch, 35 °C, pH = 7, HRT = 4 days

36 mg l−1

[203]

OFMSW

347.0

Batch, 14–22 °C, pH = 4–5, HRT = 4–4.5 days

40 mg g−1 VS

[204]

196.7

Plug flow, 37 °C, pH = 5.7–6.1, HRT = SRT = 6 days, OLR = 38.5 gVS l−1 day−1

23.110 mg l−1

[15]

Palm oil mill

88.0

Semi-continuous, 30 °C, pH = 6.5, HRT = 4 days

15.300 mg l−1

[205]

Olive oil mill

37.0

Packed bed biofilm, 25 °C, pH = 5.2–5.5, HRT = 14 days, OLR = 26 g COD l−1 day−1

10.700 mg COD l−1

[206]

Cheese whey

4590

CSTR, 37 °C, pH = 6, HRT = 2.1 days

0.84 gVFA-COD g−1 sCOD−1

[207]