Inhibition of anaerobic digestion process: A review

Review paper on current technologies for decolourisation of textile wastewaters: Perspectives for anaerobic biotechnology

https://www.cell.com/trends/biotechnology/pdf/S0167-7799(04)00193-3.pdf

Production of bioenergy and biochemicals from industrial and agricultural wastewater.

https://www.cell.com/trends/biotechnology/pdf/S0167-7799(08)00159-5.pdf

Towards practical implementation of bioelectrochemical wastewater treatment.

Interspecies electron transfer is a key process in methanogenic and sulphate-reducing environments. Bacteria and archaea that live in syntrophic communities take advantage of the metabolic abilities of their syntrophic partner to overcome energy barriers and break down compounds that they cannot digest by themselves. Here, we review the transfer of hydrogen and formate between bacteria and archaea that helps to sustain growth in syntrophic methanogenic communities. We also describe the process of reverse electron transfer, which is a key requirement in obligately syntrophic interactions. Anaerobic methane oxidation coupled to sulphate reduction is also carried out by syntrophic communities of bacteria and archaea but, as we discuss, the exact mechanism of this syntrophic interaction is not yet understood.

Electron transfer in syntrophic communities of anaerobic bacteria and archaea

In recent years considerable effort has been made in the Netherlands toward the development of a more sophisticated anaerobic treatment process, suitable for treating low a strength wastes and for applications at liquid detention times of 3–4 hr. The efforts have resulted in new type of upflow anaerobic sludge blanket (UASB) process, which in recent 6 m3 pilot-plant experiments has shown to be capable of handling organic space loads of 15–40 kg chemical oxygen demand (COD)·m−3/day at 3–8 hr liquid detention times. In the first 200 m3 full-scale plant of the UASB concept, organic space loadings of up to 16 kg COD·m−3/day could be treated satisfactorily at a detention times of 4 hr, using sugar beet waste as feed. The main results obtained with the process in the laboratory as well as in 6 m3 pilot plant and 200 m3 full-scale experiments are presented and evaluated in this paper. Special attention is given to the main operating characteristics of the UASB reactor concept. Moreover, some preliminary results are presented of laboratory experiments concerning the use of the USB reactor concept for denitrification as well as for the acid formation step in anaerobic treatment. For both purposes the process looks feasible because very satisfactory results with respect to denitrification and acid formation can be achieved at very high hydraulic loads (12 day−1) and high organic loading rates, i.e., 20 kg COD·m−3/day in the denitrification and 60–80 kg COD·m−3/day in the acid formation experiments.

Use of the upflow sludge blanket (USB) reactor concept for biological wastewater treatment, especially for anaerobic treatment

Granulation in UASB-reactors

(1984). High-Rate Anaerobic Waste-Water Treatment Using the UASB Reactor under a Wide Range of Temperature Conditions. Biotechnology and Genetic Engineering Reviews: Vol. 2, No. 1, pp. 253-284.

https://www.tandfonline.com/doi/pdf/10.1080/02648725.1984.10647801

W.J. de Zeeuw

Papers

Use of the upflow sludge blanket (USB) reactor concept for biological wastewater treatment, especially for anaerobic treatment

Granulation in UASB-reactors

High rate anaerobic waste water treatment using the UASB-reactor under a wide range of temperature conditions

Design Operation and Economy of Anaerobic Treatment

Feasibility of the Upflow Anaerobic Sludge Blanket (UASB)-Process