Co-fermentation of oil palm lignocellulosic residue with pig manure in anaerobic leach bed reactor for fatty acid production

Saritpongteeraka, Kanyarat; Boonsawang, Piyarat; Sung, Shihwu; Chaiprapat, Sumate

doi:10.1016/j.enconman.2014.04.056

Cited by 19 publications

(8 citation statements)

References 29 publications

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“…The hydrolysis yield (g h ) indicated the solubilization and output of the organic compounds from solid substrate (Saritpongteeraka et al, 2014). As shown in Fig.…”

Section: Comparison Of Hydrolysis Yield and Acidification Yieldmentioning

confidence: 99%

“…One of the direct reasons for the higher g a from co-fermentation was its high-efficient hydrolysis that provided more available nutrients for the acidogenic bacteria. Meanwhile the organic acids generated from acidogenic stage could loosen the structure of lignocelluloses and increase the accessibility of extracellular enzymes (Saritpongteeraka et al, 2014), which in turn conduced to further hydrolysis of stubborn organics. Besides, the high alkalinity caused by the released ammonia nitrogen buffered the decreased pH, and helped to maintain pH in an opportune level, which will be discussed in detail in the next section.…”

Section: Comparison Of Hydrolysis Yield and Acidification Yieldmentioning

confidence: 99%

See 1 more Smart Citation

Enhancement of volatile fatty acid production by co-fermentation of food waste and excess sludge without pH control: The mechanism and microbial community analyses

Guo

Hong

et al. 2016

Bioresource Technology

175

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“…The hydrolysis yield (g h ) indicated the solubilization and output of the organic compounds from solid substrate (Saritpongteeraka et al, 2014). As shown in Fig.…”

Section: Comparison Of Hydrolysis Yield and Acidification Yieldmentioning

confidence: 99%

Section: Comparison Of Hydrolysis Yield and Acidification Yieldmentioning

confidence: 99%

Enhancement of volatile fatty acid production by co-fermentation of food waste and excess sludge without pH control: The mechanism and microbial community analyses

Guo

Hong

et al. 2016

Bioresource Technology

175

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“…This is as expected, because codigestion balances the carbon/nitrogen (C/N) ratio in the cosubstrate mixture, as well as macro-and micronutrients, pH, inhibitors/toxic compounds, and dry matter. 3 The COD concentrations in the supernatant of these digesters were in the range of 1355−2110 mg/L (Figure 1), indicating that a small proportion of untreated substrate remained in the digesters. Among the digesters with higher CH 4 yields, the NH 4 + -N concentrations in the supernatant (below 1658 mg/L) indicate that the biogas production was not inhibited by NH 4 + -N, which is based on the inhibitory NH 4 + -N concentration ranging from 2.5 to 11 g/L.…”

Section: Energy and Fuelsmentioning

confidence: 96%

Estimating the Fates of C and N in Various Anaerobic Codigestions of Manure and Lignocellulosic Biomass Based on Artificial Neural Networks

Li¹,

Ke²,

Chen³

et al. 2016

Energy Fuels

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In this study, artificial-neural-network-(ANN-) based models were explored and validated to predict the fates of carbon (C) and nitrogen (N) under 84 types of digesters in treating different blends of seven substrates (corn straw, rice straw, wheat straw, swine manure with fed feedstuff and foodstuff, cattle manure, and chicken manure) under changing volatile solids (VS) loadings. ANN models based on principal component analysis (PC-ANN) were developed for estimating the fate of C (CH 4 yields and COD concentrations in the supernatant), showing higher prediction accuracies than the original ANN models. The fate of N (NH 4 + -N concentrations in the supernatant) was well predicted by the ANN model with two inputs, namely, total Kjeldahl nitrogen (TKN) and total ammonium nitrogen (TAN) in the substrates. The models were also developed for wide applications to validate the CH 4 yields and NH 4 + -N concentrations for new databases outside the established data range obtained from the literature, with regression coefficient (R 2 ) values of 0.705 and 0.791, respectively. This study can provide guidance for future process optimization and nutrient recycling in anaerobic digestion (AD).

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“…The acidification yield (ηa) was defined as the ratio between the total VFA + lactic acid (in COD) in the reactor and the tCOD fed to the reactors [18][19][20], according to Equation (2):…”

Section: Calculationsmentioning

confidence: 99%

“…In this work, FW from a canteen, brine from a fish-canning industry, and wastewater derived from a biodiesel production facility, with a final salinity of [12][13][14][15][16][17][18] g L −1 , were mixed and used to produce VFA in different reactor configurations/conditions (a batch stirred reactor, a pressurized stirred batch reactor, and a granular sludge bed column) and at different pH levels (5 and 7) in order to obtain the best operational conditions that promote organic acids production.…”

Section: Introductionmentioning

confidence: 99%

Volatile Fatty Acids (VFA) Production from Wastewaters with High Salinity—Influence of pH, Salinity and Reactor Configuration

et al. 2021

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The hydrocarbon-based economy is moving at a large pace to a decarbonized sustainable bioeconomy based on biorefining all types of secondary carbohydrate-based raw materials. In this work, 50 g L−1 in COD of a mixture of food waste, brine and wastewater derived from a biodiesel production facility were used to produce organic acids, important building-blocks for a biobased industry. High salinity (12–18 g L−1), different reactors configuration operated in batch mode, and different initial pH were tested. In experiment I, a batch stirred reactor (BSR) at atmospheric pressure and a granular sludge bed column (GSBC) were tested with an initial pH of 5. In the end of the experiment, the acidification yield (ηa) was similar in both reactors (22–24%, w/w); nevertheless, lactic acid was in lower concentrations in BSR (6.3 g L−1 in COD), when compared to GSBC (8.0 g L−1 in COD), and valeric was the dominant acid, reaching 17.3% (w/w) in the BSR. In experiment II, the BSR and a pressurized batch stirred reactor (PBSR, operated at 6 bar) were tested with initial pH 7. The ηa and the VFA concentration were higher in the BSR (46%, 22.8 g L−1 in COD) than in the PBSR (41%, 20.3 g/L in COD), and longer chain acids were more predominant in BSR (24.4% butyric, 6.7% valeric, and 6.2% caproic acids) than in PBSR (23.2%, 6.2%, and 4.2%, respectively). The results show that initial pH of 7 allows achieving higher ηa, and the BSR presents the most suitable reactor among tested configurations to produce VFA from wastes/wastewaters with high salinity.

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Co-fermentation of oil palm lignocellulosic residue with pig manure in anaerobic leach bed reactor for fatty acid production

Cited by 19 publications

References 29 publications

Enhancement of volatile fatty acid production by co-fermentation of food waste and excess sludge without pH control: The mechanism and microbial community analyses

Enhancement of volatile fatty acid production by co-fermentation of food waste and excess sludge without pH control: The mechanism and microbial community analyses

Estimating the Fates of C and N in Various Anaerobic Codigestions of Manure and Lignocellulosic Biomass Based on Artificial Neural Networks

Volatile Fatty Acids (VFA) Production from Wastewaters with High Salinity—Influence of pH, Salinity and Reactor Configuration

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