Biomethanization of sugar beet byproduct by semi-continuous single digestion and co-digestion with cow manure

Aboudi, Kaoutar; Álvarez-Gallego, Carlos José; Romero, L.I.

doi:10.1016/j.biortech.2015.10.051

Cited by 33 publications

(19 citation statements)

References 30 publications

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“…The present study showed that substrates worked could be digested at a shorter HRT (15 d) in the HR. Aboudi et al [25] also applied 15 days of HRT (OLR: 4.97 g VS/Lreactor.d) and achieved 32% higher biogas generation during co-digestion of sugar beet byproduct with cow manure compared with mono-digestion. The methane yield from anaerobic digestion of dairy manure was reported as between 0.10 to 0.37 m 3 /kgVS [26] and for MS between 0.6 and 0.65 m 3 / kg VS [27].…”

Section: Co-digestion With Msmentioning

confidence: 99%

Comparative evaluation of biogas production from dairy manure and co‐digestion with maize silage by CSTR and new anaerobic hybrid reactor

Varol

Uğurlu

2016

Engineering in Life Sciences

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This study aimed to investigate potential methane production through anaerobic digestion of dairy manure and co‐digestion with maize silage. Two different anaerobic reactor configurations (single‐stage continuously stirred tank reactor [CSTR] and hybrid anaerobic digester) were used and biogas production performances for each reactor were compared. The HR was planned to enable phase separation in order to improve process stability and biogas production under higher total solids loadings (≥4%). The systems were tested under six different organic loading rates increased steadily from 1.1 to 5.4 g VS/L.d. The CSTR exhibited lower system stability and biomass conversion efficiency than the HR. The specific biogas production of the hybrid system was between 440 and 320 mL/gVS with 81–65% volatile solids (VS) destruction. The hybrid system provided 116% increase in specific biogas production and VS destruction improved by more than 14%. When MS was co‐digested together with dairy manure, specific biogas production rates increased about 1.2‐fold. Co‐digestion was more beneficial than mono‐material digestion. The hybrid system allowed for generating methane enriched biogas (>75% methane) by enabling phase separation in the reactor. It was observed that acidogenic conditions prevailed in the first two compartments and the following two segments as methanogenic conditions were observed. The pH of the acidogenic part ranged between 4.7 and 5.5 and the methanogenic part was between 6.8 and 7.2.

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Section: Co-digestion With Msmentioning

confidence: 99%

Comparative evaluation of biogas production from dairy manure and co‐digestion with maize silage by CSTR and new anaerobic hybrid reactor

Varol

Uğurlu

2016

Engineering in Life Sciences

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“…An interesting by-product generated in the process of sugar extraction from sugar beet (Beta vulgaris), is the exhausted sugar beet pulp (ESBP), which has the following composition-24%-32% of hemicellulose, 22%-30% of cellulose, 3%-4% of lignin, and 24%-32% of pectin [3]. Therefore, ESBP is a suitable substrate for biogas production, through the anaerobic digestion process (AD) [4][5][6]. The use of biogas produced from ESBP could generate economic and environmental benefits for energy-intensive consumers, such as sugar beet industries and, hence, contribute to the circular economy.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Methane Production in Thermophilic Anaerobic Co-Digestion of Exhausted Sugar Beet Pulp and Pig Manure

et al. 2019

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In this paper, the viability of thermophilic anaerobic co-digestion of exhausted sugar beet pulp (ESBP) and pig manure (PM) was evaluated. The effect of the proportion of ESBP on biogas production was investigated by using a series of lab-scale batch assays, in duplicates. The following five ESBP:PM mixture ratios were studied: 0:100, 10:90, 25:75, 50:50, and 100:0. The highest cumulative methane production (212.4 mL CH4/g VSadded) was reached for the mixture 25:75. The experimental results showed that the increase in the proportion of ESBP in the mixture led to the distortion of the process, due to acidification by the volatile fatty acids generated. Acetic acid was the predominant acid in all the cases, representing more than 78% of the total acidity. Moreover, the results obtained by operating at thermophilic temperatures have been compared with those obtained in a previous study conducted at mesophilic temperatures. The results have shown that in the individual digestion of ESBP, the activity of acetoclastic methanogens was affected in both temperatures, but especially in thermophilic conditions. Thus, the methane produced in the individual thermophilic digestion of ESBP came almost entirely from the activity of hydrogen-utilizing methanogenic archaea.

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“…In millennia, agro-industrial waste captured interest owing to its abundant availability, pollution reduction ability, low price, and lignocellulosic nature. [1] It is important for the renewable energy, biofuels, and biochemicals generation and is obtained from various sources, agricultural and forestry waste stream. [2] The main industrial wastes include wheat straw, rice straw, corn straw, sugarcane, and sugarcane bagasse.…”

Section: Introductionmentioning

confidence: 99%

Biochemical characterization of wheat straw cell wall with special reference to bioactive profile

Tufail

Saeed

Imran

et al. 2018

International Journal of Food Properties

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The core objective of the current study was to extract and characterize the wheat straw cell wall for its nutritional and bioactive profile. For the purpose, four different wheat straw varieties namely Ujala-16, Johar-16, Gold-16, and Galaxy-13 were procured from Ayub Agriculture Research Institute, Faisalabad, Pakistan. The whole research was conducted in three different phases. In first phase, nutritional composition and mineral profile of straw of different wheat varieties were determined. In second phase, wheat straw cell wall of different varieties was isolated and characterized for its important bioactive constituents, such as lignin, cellulose, hemicelluloses, phytosterol, and policosanol (PC) content. Results showed that straw of different wheat varieties contained 7.75-9.24, 3.98-5.06, 3.43-3.98, and 1.60-2.24 g/100 g moisture, ash, protein, and fat contents, respectively, whereas potassium, calcium, phosphorus, and magnesium were 1.19-2.03, 0.10-0.79, 0.10-0.98, 0.03-0.98 ppm, respectively. Moreover, lignocellulosic mass: cellulose 37.75-38.18 g/100 g raw material, lignin 15.67-16.07 g/100 g raw material, hemicelluloses 28.25-28.98 g/100 g raw material, was present in wheat straw and varied significantly among different varieties. In addition, phytosterol ranged from 854 to 1176 mg/kg in straw of different wheat cultivars, whilst PC from 196.09 to 236.48 mg/kg. Conclusively, wheat straw was an excellent source of many important bioactive moieties especially lignocelluloses and could have functional use.

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Biomethanization of sugar beet byproduct by semi-continuous single digestion and co-digestion with cow manure

Cited by 33 publications

References 30 publications

Comparative evaluation of biogas production from dairy manure and co‐digestion with maize silage by CSTR and new anaerobic hybrid reactor

Comparative evaluation of biogas production from dairy manure and co‐digestion with maize silage by CSTR and new anaerobic hybrid reactor

Enhancement of Methane Production in Thermophilic Anaerobic Co-Digestion of Exhausted Sugar Beet Pulp and Pig Manure

Biochemical characterization of wheat straw cell wall with special reference to bioactive profile

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