Energy neutrality versus carbon footprint minimization in municipal wastewater treatment plants.
Clicks: 199
ID: 77293
2019
This work aimed to compare the carbon footprint (CF) of six full-scale wastewater treatment plants (WWTPs). The CF was estimated in the range of 23-100 kg CO per population equivalent. In the total CF, the direct emissions held the highest share (62-74%) for the plants with energy recovery from biogas. In the plants depending entirely on the power grid, the indirect emissions due to energy consumption dominated the total CF (69-72%). The estimated CF was found highly sensitive towards the choice of NO emission factors. A dual effect of external substrates co-digestion on the CF has been presented. After co-digestion, the overall CF decreased by 7% while increasing the biogas production by 17%. While applying the empirical model, the level of energy neutrality was strongly related to the ratio of the indirect to direct emissions.
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maktabifard2019energybioresource
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| Authors | Maktabifard, Mojtaba;Zaborowska, Ewa;Makinia, Jacek; |
| Journal | Bioresource technology |
| Year | 2019 |
| DOI | S0960-8524(19)31876-0 |
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