Investigating hydrothermal pretreatment of food waste for two-stage fermentative hydrogen and methane co-production

Ding, Lingkan; Cheng, Jun; Qiao, Dan; Yue, Liangchen; Li, Yu-You; Zhou, Junhu; Cen, Kefa

doi:10.1016/j.biortech.2017.05.114

Cited by 159 publications

(63 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is a very good result, comparable with the yield from buttermilk and much better than the yield from whey due to the higher TS and differences in the chemical composition, including a considerable content of fat [1,3,16]. The efficiency of anaerobic digestion of CE is also comparable with that of food waste from restaurants and canteens [57]. The efficiency of biogas production from confectionery waste or stuffed wafers alone was verified and discussed in detail in earlier publications by Pilarska et al (2018 [14,15].…”

Section: Bacterial Count and Enzymatic Activitysupporting

confidence: 59%

The Use of Lignin as a Microbial Carrier in the Co-Digestion of Cheese and Wafer Waste

et al. 2019

View full text Add to dashboard Cite

The aim of the article was to present the effects of lignin grafted with polyvinylpyrrolidone (PVP) as a microbial carrier in anaerobic co-digestion (AcoD) of cheese (CE) and wafer waste (WF). Individual samples of waste cheese and wafers were also tested. The PVP modifier was used to improve the adhesive properties of the carrier surface. Lignin is a natural biopolymer which exhibits all the properties of a good carrier, including nontoxicity, biocompatibility, porosity, and thermal stability. Moreover, the analysis of the zeta potential of lignin and lignin combined with PVP showed their high electrokinetic stability within a wide pH range, that is, 4-11. The AcoD process was conducted under mesophilic conditions in a laboratory by means of anaerobic batch reactors. Monitoring with two standard parameters: pH and the VFA/TA ratio (volatile fatty acids-to-total alkalinity ratio) proved that the process was stable in all the samples tested. The high share of N-NH 4 + in TKN (total Kjeldahl nitrogen), which exceeded 90% for WF+CE and CE at the last phases of the process, proved the effective conversion of nitrogen forms. The microbiological analyses showed that eubacteria proliferated intensively and the dehydrogenase activity increased in the samples containing the carrier, especially in the system with two co-substrates (WF+CE/lignin) and in the waste cheese sample (CE/lignin). The biogas production increased from 1102.00 m 3 Mg −1 VS (volatile solids) to 1257.38 m 3 Mg −1 VS in the WF+CE/lignin sample, and from 881.26 m 3 Mg −1 VS to 989.65 m 3 Mg −1 VS in the CE/lignin sample. The research results showed that the cell immobilization on lignin had very positive effect on the anaerobic digestion process.

show abstract

Section: Bacterial Count and Enzymatic Activitysupporting

confidence: 59%

The Use of Lignin as a Microbial Carrier in the Co-Digestion of Cheese and Wafer Waste

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The methane content in the raw biogas produced accounted for 42.2 ± 1.8% (Table 5). The results of bio-methane yield for Guangzhou University FW represented around 50% of the theoretical values of 649 to 661 mL CH4/g VS of FW from China [49,74], and those values can be an indication that some pretreatment is necessary to improve the methane production. However, the results are comparable with other studies, in different conditions, especially without pretreatment, as shown in Table 6.…”

Section: Food Waste Characteristics-lab and Literaturementioning

confidence: 82%

“…The composition of food waste (FW) depends on the food diet and consumption patterns; therefore, it varies in time and place. In general, the food waste in China is characterized by high moisture content: more than 60% in a southern city [71] and 92% in urban areas of Hangzhou City [49], with VS (% of TS) around 87% and 80%, respectively. The pH has the tendency to be acidic within a range of 3.6-7.0 [49,71,72].…”

Section: Food Waste Characteristics-lab and Literaturementioning

confidence: 99%

“…In general, the food waste in China is characterized by high moisture content: more than 60% in a southern city [71] and 92% in urban areas of Hangzhou City [49], with VS (% of TS) around 87% and 80%, respectively. The pH has the tendency to be acidic within a range of 3.6-7.0 [49,71,72]. The contents of organic components are high but vary in composition, while the contents of fat, protein and carbohydrate reported vary between 17-39%, 7-12% and 46-68%, respectively [71].…”

Section: Food Waste Characteristics-lab and Literaturementioning

confidence: 99%

“…The inorganic compounds, especially from kitchen waste, have a high level of salinity, with values between 1100 and 1200 mg L −1 of calcium and 95-110 mg L −1 of magnesium [73]. The elemental composition of the solid content (% of TS) of carbon, hydrogen, oxygen, nitrogen, and sulfur are 46%, 7%, 2.5-3.8%, 2.5%, and 0.3%, respectively [49,72].…”

Section: Food Waste Characteristics-lab and Literaturementioning

confidence: 99%

See 2 more Smart Citations

Biogas Potential for Improved Sustainability in Guangzhou, China—A Study Focusing on Food Waste on Xiaoguwei Island

et al. 2019

View full text Add to dashboard Cite

As a result of rapid development in China and the growth of megacities, large amounts of organic wastes are generated within relatively small areas. Part of these wastes can be used to produce biogas, not only to reduce waste-related problems, but also to provide renewable energy, recycle nutrients, and lower greenhouse gases and air polluting emissions. This article is focused on the conditions for biogas solutions in Guangzhou. It is based on a transdisciplinary project that integrates several approaches, for example, literature studies and lab analysis of food waste to estimate the food waste potential, interviews to learn about the socio-technical context and conditions, and life-cycle assessment to investigate the performance of different waste management scenarios involving biogas production. Xiaoguwei Island, with a population of about 250,000 people, was chosen as the area of study. The results show that there are significant food waste potentials on the island, and that all studied scenarios could contribute to a net reduction of greenhouse gas emissions. Several socio-technical barriers were identified, but it is expected that the forthcoming regulatory changes help to overcome some of them.

show abstract

Energy Integration of the Hydrothermal Pretreatment of Food Waste in Terms of a Sustainable Biorefinery

López-Sandin

Rodríguez-Jasso

Ruíz

2023

Methods and Protocols in Food Science

View full text Add to dashboard Cite

Investigating hydrothermal pretreatment of food waste for two-stage fermentative hydrogen and methane co-production

Cited by 159 publications

References 33 publications

The Use of Lignin as a Microbial Carrier in the Co-Digestion of Cheese and Wafer Waste

The Use of Lignin as a Microbial Carrier in the Co-Digestion of Cheese and Wafer Waste

Biogas Potential for Improved Sustainability in Guangzhou, China—A Study Focusing on Food Waste on Xiaoguwei Island

Energy Integration of the Hydrothermal Pretreatment of Food Waste in Terms of a Sustainable Biorefinery

Contact Info

Product

Resources

About