Effect of free ammonia nitrogen on the methanogenic activity of swine wastewater

Belmonte, Marisol; Hsieh, Chia-Fang; Figueroa, Cindy; Campos, José Luis; Vidal, Gladys

doi:10.2225/vol14-issue3-fulltext-11

Cited by 40 publications

(11 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Table 1, similar values have been previously reported. IC50 values of 27 and 40 mg FAN-N•L -1 have been previously reported using digested sewage sludge as inoculum [38,39,43]. Using similar inocula, a maximum allowable FAN concentration of 55 mg FAN-N•L -1 was found by Bhattacharya and Parkin [78].…”

Section: Cluster Definition and Ic50 Estimation 33mentioning

confidence: 61%

Unraveling the literature chaos around free ammonia inhibition in anaerobic digestion

Capson-Tojo

Moscoviz

Astals

et al. 2020

Renewable and Sustainable Energy Reviews

188

View full text Add to dashboard Cite

Section: Cluster Definition and Ic50 Estimation 33mentioning

confidence: 61%

Unraveling the literature chaos around free ammonia inhibition in anaerobic digestion

Capson-Tojo

Moscoviz

Astals

et al. 2020

Renewable and Sustainable Energy Reviews

188

View full text Add to dashboard Cite

“…On the other hand, protein-rich components of FW might lead to accumulation of ammonia in anaerobic digesters, leading to potential inhibition of methanogenic activities (Chen et al, 2008). Even though the reason behind ammonia inhibition in AD processes is still unclear (Shi et al, 2017), it has been suggested that free ammonia molecules diffuse submissively through the methanogen cell wall causing proton imbalance and a variation in intracellular pH, leading to inhibition of enzymatic reactions, potassium deficiency and cell instability (Belmonte et al, 2011; Chen et al, 2008). In this context, several studies reported failure of AD systems treating FW because of high total ammonia nitrogen (TAN) concentration (Kayhanian, 1994; Nanninga and Gottschal, 1986; Ortner et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Anaerobic digestion of food waste with aerobic post-treatment: Effect of fruit and vegetable content

2018

View full text Add to dashboard Cite

A mesophilic anaerobic digester, followed by a psychrophilic aerobic post-treatment, was used to treat food waste (FW) with different proportions of fruit and vegetable waste (FVW). Two types of FW were used: low fruit and vegetable mix (LFV, with 56.5% of FVW) and high fruit and vegetable mix (HFV, with 78.3% of FVW). The anaerobic digester fed with LFV failed at an organic loading rate of 1.6 g VS.L.d (volatile fatty acid (VFA) = 6000 mg.L) due to high ammonia (reaching 3000 mg.L). It was shown that, in an unstable anaerobic environment, ammonia is highly correlated ( r = 0.77) with VFA and is negatively correlated with volatile solids, total solids, and chemical oxygen demand (COD) removal rates ( r = 0.88, r = 0.71, and r = 0.91, respectively). In contrast, the anaerobic digester fed with HFV exhibited a stable performance (VFA = 1243 mg.L), with limited ammonia accumulation (940 mg.L). Methane generation was affected by the FVW content and reached 531 ml CH.g VS (CH = 52%) with LFV feed and 478 ml CH.g VS (CH = 57.4%) with HFV. The overall TS, VS and COD removal rates (all ranging between 94% and 97%), were closely similar for LFV and HFV. Accordingly, the aerobic post-treatment seems to compensate for the reduced performance of the disturbed anaerobic system fed with LFV.

show abstract

“…The free ammonia concentration (mg/L) was calculated based on Eqs. (1) and (2) (Cuetos et al 2008;Belmonte et al 2011):…”

Section: Methodsmentioning

confidence: 99%

Enhanced biogas yield by thermo-alkali solubilization followed by co-digestion of intestine waste from slaughterhouse with food waste

2017

View full text Add to dashboard Cite

Intestine waste generated from slaughterhouse (IWS) is difficult to degrade in anaerobic process due to the presence of high protein and lipid contents. However, anaerobic co-digestion helps to increase the degradation of IWS by the addition of carbon-rich food waste (FW). To increase the biogas yield, thermo-alkali pretreatment may be more viable method for the anaerobic digestion of protein and lipid rich wastes. In the present study, Thermo-alkali pretreatment of intestine waste from slaughterhouse and food waste alone and mixing of IWS and FW with different ratios (1:1-1:3) on VS basis have been studied. To study the effect of Thermo-alkali pretreatment on solubilization of substrate, the substrate was mixed with alkali solutions (NaOH and KOH) at different concentrations of 1, 2, 3, 4 and 5% solutions. The results revealed that the maximum solubilization was observed to be 94.7% and 90.1% at KOH (1:3 and 5%) and NaOH (1:3 and 5%), respectively. Based on the study, enhancement in biogas yield by 16% (IWS), 11.5% (FW), 12.2% (1:1), 18.11% (1:2) and 22.5% (1:3) in KOH pretreated waste when compared with NaOH pretreated waste.

show abstract

Effect of free ammonia nitrogen on the methanogenic activity of swine wastewater

Cited by 40 publications

References 29 publications

Unraveling the literature chaos around free ammonia inhibition in anaerobic digestion

Unraveling the literature chaos around free ammonia inhibition in anaerobic digestion

Anaerobic digestion of food waste with aerobic post-treatment: Effect of fruit and vegetable content

Enhanced biogas yield by thermo-alkali solubilization followed by co-digestion of intestine waste from slaughterhouse with food waste

Contact Info

Product

Resources

About