Short-chain fatty acids recovery from sewage sludge via acidogenic fermentation as a carbon source for denitrification: A review

Liu, Wen; Yang, Huan; Ye, Jiongjiong; Luo, Jing; Li, Yu You; Liu, Jianyong

doi:10.1016/j.biortech.2020.123446

Cited by 89 publications

(9 citation statements)

References 104 publications

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“…3.4. Effect of RL on VFA production in the co digestion system VFA, the intermediate value product of organic anaerobic fermentation process, is the preferred carbon source for biological nitrogen and phosphorus removal, and it is also the raw material for the production of bioplastics (Kuang et al 2020b;Liu et al 2020). The effect of RL on VFA production during the co digestion of ES and PW is shown in Figure 5.…”

Section: Effect Of Rl On the Organic Matter Release During The Codigestion Processmentioning

confidence: 99%

Surfactant rhamnolipid promotes anaerobic codigestion of excess sludge and plant waste

Wang¹,

Zhou

Dai

et al. 2021

Water Science and Technology

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In order to solve the bottleneck of low methane production in anaerobic co digestion of excess sludge (ES) and plant waste (PW), a new strategy of enhancing hydrolysis and acidification by rhamnolipid (RL) was proposed under thermophilic condition . The results showed that the optimal dosage of RL was 50 g/Kg total suspended solids, and the maximum yield of methane was 198.5 mL/g volatile suspended solid (VSS), which was 2.3 times of that in the control. RL promoted the dissolution of organic matter in the codigestion process of ES and PW, and the higher the dosage of RL, the higher the concentration of soluble chemical oxygen demand (SCOD) in the fermentation broth. When RL was 100 g/Kg, the maximum content of SCOD in fermentation broth was 2,451 mg/L, and the contents of soluble protein and polysaccharide were 593 mg/L and 419 mg/L on 10 d, respectively, which were significantly higher than other groups. In addition, the yield of VFA in RL group was also significantly increased, and acetate and propionate were the main components of VFAs. This research work provides data support for the resource utilization of ES and PW, and expands the application field of RL.

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Section: Effect Of Rl On the Organic Matter Release During The Codigestion Processmentioning

confidence: 99%

Surfactant rhamnolipid promotes anaerobic codigestion of excess sludge and plant waste

Wang¹,

Zhou

Dai

et al. 2021

Water Science and Technology

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“…Acidogenic fermentation (AF) is an effective way to convert organic components into small molecule short-chain fatty acids (SCFAs), which are ideal carbon sources for the denitrification process [ 23 , 24 ]. Despite some studies of sludge AF having been conducted to investigate the microbial mechanism and strengthening strategy of this process [ 19 , [25] , [26] , [27] ], pilot-scale implementations of recovered carbon sources with on-site feedback from real WWTPs are still scarce.…”

Section: Introductionmentioning

confidence: 99%

Carbon source recovery from waste sludge reduces greenhouse gas emissions in a pilot-scale industrial wastewater treatment plant

Wang

Liu

et al. 2023

Environmental Science and Ecotechnology

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“…For the conventional activated sludge wastewater treatment process, large amounts of sludge, as by-products, are generated and generally not being properly recycled in many occasions [9,10]. As the wastewater-sourced sludge is mainly composed of organic matter, the valorization of sludge is attracting more and more attention, in particular to producing carbon source on-site [11][12][13]. The dose of produced internal carbon source rather than commercial organic carbon source would not only reduce the cost but also decrease the sludge production in WWTP.…”

Section: Introductionmentioning

confidence: 99%

Application of Primary Sludge Fermentation for the Production of Carbon Source for Full-Scale Biological Nutrients Removal

Yang¹,

Zhao²,

Zhang³

et al. 2022

Pol. J. Environ. Stud.

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The wastewater effluent quality in BNR systems critically depends on the availability of readily biodegradable carbon source in the influent. Primary sludge in WWTPs is identified as a renewable resource for internal carbon source production. The effects of SRT, temperature and RR on the anaerobic fermentation process performance were assessed and the biological nutrient removal performance was evaluated in this study. The results showed SRT of 5d, temperature of 30ºC and RR of 20 is the optimal operating condition for primary sludge anaerobic fermentation. Under the optimal operating condition, the SCOD and VFA production rate of the fermentation product is in the range of 0.39~0.48 mg SCOD/mg VSS and 0.25~0.31 mgVFA/mg VSS. The full-scale application of internal carbon source production has achieved better effluent quality (TN 7.1 mg/L and TP 0.3 mg/L) compared to the effluent (TN 18.4 mg/L and TP 1.3 mg/L) without adding carbon source. Primary sludge fermentation can be considered as an appropriate solution for carbon source production and contribute to the goal of meeting stringent wastewater discharge standard.

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Short-chain fatty acids recovery from sewage sludge via acidogenic fermentation as a carbon source for denitrification: A review

Cited by 89 publications

References 104 publications

Surfactant rhamnolipid promotes anaerobic codigestion of excess sludge and plant waste

Surfactant rhamnolipid promotes anaerobic codigestion of excess sludge and plant waste

Carbon source recovery from waste sludge reduces greenhouse gas emissions in a pilot-scale industrial wastewater treatment plant

Application of Primary Sludge Fermentation for the Production of Carbon Source for Full-Scale Biological Nutrients Removal

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