Biogas Production from Chinese Herb-extraction Residues: Influence of Biomass Composition on Methane Yield

Wang, Ming; Li, Wenzhe; Liu, Shuang; Liú, Dan; Yin, Lili; Yuan, Hairong

doi:10.15376/biores.8.3.3732-3740

Cited by 11 publications

(9 citation statements)

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“…Therefore, if one component has a lower content or a smaller variation degree between the specific samples, it will probably show a slight effect on the response value (G 0 ). It is also worth mentioning that the prediction models reported by previous literatures have widely extensive variability as the used test materials changed [18,20]. Likewise, the prediction model developed in this study has a lack of universal applicability and is only suitable for BMP determination of VCR.…”

Section: Results Of Linear Regression Analysismentioning

confidence: 90%

“…Furthermore, several studies have focused on some fresh lignocellulosic wastes such as sunflowers, giant reed, spent edible mushroom substrates, and Chinese herb-extraction residues and fitted their own BMP regression models. [16,20,21]. However, to the best of our knowledge, no literature has investigated the relationships between chemical composition of VCR and its BMP by establishing a regression model.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Biochemical Methane Potential and Kinetics on the Anaerobic Digestion of Vegetable Crop Residues

Sun

et al. 2018

Energies

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There is a lack of literature reporting the measurement and prediction of biochemical methane potential (BMP) of vegetable crop residues (VCRs) and similarly, the kinetic assessment on the anaerobic digestion process of VCR is rarely investigated. In this paper, the BMP tests of five different vegetable (snap bean, capsicum, cucumber, eggplant, and tomato) crop residues were conducted at feed to inoculum ratio (F/I) of 2.0 under mesophilic (36 ± 1 °C) conditions. A series of single-variable and multiple-variable regression models were built based on organic components (hemicellulose, cellulose, lignin, total fat, total sugar, and crude protein) for BMP prediction. Three kinetic models, including the first-order kinetic model, the Chen and Hashimoto model, and the modified Gompertz model, were used to simulate the methane yield results of VCR and obtain valuable model parameters simultaneously. As a result, the BMPs and volatile solids (VS) degradation degree of different VCRs were respectively in the range of 94.2–146.8 mL g−1 VS and 40.4–49.9%; the regression prediction models with variables lignin (R2 = 0.704, p = 0.076), variables crude protein and lignin (R2 = 0.976, p = 0.048), and variables total fat, hemicellulose, and lignin (R2 = 0.999, p = 0.027) showed the best performance on BMP prediction among the single-factor, two-factor, and three-factor models, respectively. In addition, compared to the other two kinetic models, the modified Gompertz model could be excellently fitted (R2 = 0.986–0.998) to the results of BMP experiment, verification deviations within 0.3%.

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Section: Results Of Linear Regression Analysismentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Evaluation of Biochemical Methane Potential and Kinetics on the Anaerobic Digestion of Vegetable Crop Residues

Sun

et al. 2018

Energies

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“…Different TCM factories often produce different kinds of medicines, which leads to the organic composition of CHER produced from different factories also being very different, which has been problematic for the disposal of CHER. An investigation focused on the organic composition and biogas production of six CHERs collected from different sites was studied in a previous assay (Wang et al 2013). The result showed that the content of total lignocelluloses in those CHERs ranged from 46% to 55%, which is similar to the straw biomass, besides, the protein, fat, and total sugar contents, which varied with different degrees.…”

Section: Introductionmentioning

confidence: 99%

“…However, there is minimal literature focused on the AD treatment of CHER until currently because CHER is a special waste that primarily exists in China and has a weaker biodegradability. A previous study by the authors found that CHER has a weaker methane yield due to its high lignocelluloses content (Wang et al 2013). It had been demonstrated that lignocelluloses have a complex and rigid structure in biomass, and they are considered to be recalcitrant to biodegradability for biogas or ethanol production (Taherzadeh and Karimi 2008;Zheng et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Enhanced Biogas Yield of Chinese Herbal Medicine Extraction Residue by Hydrothermal Pretreatment

Wang

Zhang²,

Yan

et al. 2017

BioResources

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aChinese herbal medicine extraction residue (CHER) is a special organic waste produced in China. Because of the high content of lignocelluloses, CHER have a weak bioconversion efficiency for bio-products production. This study investigates the effect of a hydrothermal pretreatment (HTP, 140 to 220 °C, 15 min) on the organic matter solubilisation, biochemical methane potential, and methanation kinetics of CHER during anaerobic digestion (AD). The AD test was conducted with 5 g/L total solid at 35 °C for 30 d. The results showed that the HTP clearly improved the solubilisation of CHER, and the obtained soluble COD (%) reached over 30% (only 4.5% in untreated). Acetic acid, xylose, and glucose were found to be the main products in the hydrolysate. The methane yield and methanation speed of the treated CHER were also enhanced. The highest methane yield of 306 mL/g volatile solid was achieved at a HTP temperature of 180 °C, while the untreated control was only 175 mL/g VS. Moreover, a carbonisation phenomenon was observed at HTP temperatures over 200 °C, which resulted in a loss of organic matter and methane yield.

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“…Although inorganic pollutants cannot be removed, organic pollutants can be reduced conveniently and efficiently. This high-grade, clean energy technology design may serve as a solution to nonpoint source pollution, livestock-raising pollution, and energy shortages in rural areas, and at the same time it may generate significant environmental and energy benefits (Wang et al 2013). In the major developed countries, biomass energy technology, particularly biogas technology, has been regarded as the most promising accessible renewable energy (Gronowska et al 2009;Kumarappan et al 2009) and has been deemed a viable option for treating vast quantities of wastewater of all kinds (Li et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Impact of Optimized Flow Pattern on Pollutant Removal and Biogas Production Rate Using Wastewater Anaerobic Fermentation

Huang¹,

Mei

Liang

et al. 2015

BioResources

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This paper introduces a new-type of antigravity mixing method, which was applied in the biogas production process, using organic wastewater fermentation. It was found that the digesters with two designs, a highposition, centralized pressure outlet and a high-position, dispersed pressure outlets, both lead to an increase in biogas production rates by 89% and 125%, respectively. The biogas production peak appeared 1 day and 7 days earlier, and the COD removal rates were raised by 27% and 42%, respectively. The results indicated that the optimized flow field had a significant impact. This work also explains the mechanism of flow field optimization using computational fluid dynamics (CFD) software for the simulation of the flow field form in the hydraulic mixing.

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Biogas Production from Chinese Herb-extraction Residues: Influence of Biomass Composition on Methane Yield

Cited by 11 publications

References 0 publications

Evaluation of Biochemical Methane Potential and Kinetics on the Anaerobic Digestion of Vegetable Crop Residues

Evaluation of Biochemical Methane Potential and Kinetics on the Anaerobic Digestion of Vegetable Crop Residues

Enhanced Biogas Yield of Chinese Herbal Medicine Extraction Residue by Hydrothermal Pretreatment

Impact of Optimized Flow Pattern on Pollutant Removal and Biogas Production Rate Using Wastewater Anaerobic Fermentation

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