Biogas Production From Biodegradable Bioplastics

Vasmara, Ciro; Marchetti, Rosa

doi:10.30638/eemj.2016.220

Cited by 42 publications

(32 citation statements)

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“…Results were then compared to findings from previous studies, of which those pertaining to bioplastics are summarized in Table 4. The final BMPs of bioplastic bags under mesophilic conditions are in the range 42.0-86.1 NmL CH 4 / gVS, comparable to those reported in [6,25] for Mater-Bi® and in [30] for two starch-based films. On the contrary, in [2] a significantly higher BMP was observed, although obtained in a very long time (250 days of test).…”

Section: Bmp Testssupporting

confidence: 84%

“…Considering thermophilic conditions, the result of bioplastic shopper bags (127 NmL CH 4 /gVS) is very similar to those obtained in [25] for Mater-Bi® and in [11] for a film derived from corn starch. On the contrary, the BMP of dedicated bags (263 NmL CH 4 /gVS) is sensibly higher, similar to that of Mater-Bi® items tested in [6].…”

Section: Bmp Testssupporting

confidence: 82%

“…This test measures the ultimate methane production from organic feedstocks in an optimized batch system, and it is the key analytical tool to characterize organic substrates with respect to their behavior under anaerobic degradation conditions. Literature delivers some recent publications related to the evaluation of the anaerobic degradability of starchbased bioplastics (such as Mater-Bi®) [2,5,6,11,25,30]. Regarding paper bags, to the authors knowledge, there are no publications related to BMP assays performed on bags specifically manufactured for food waste collection, such that analyzed in the present research.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Paper vs. Bioplastic Bags on Food Waste Collection and Processing

Dolci

Catenacci

Malpei

et al. 2021

Waste Biomass Valor

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Purpose The most abundant among the separately collected waste materials in Italy is food waste. This research aims to evaluate the influence of the type of collection bag on the food waste management chain. In Italy, the food waste collection is mainly based on bioplastic bags. As an alternative, a new type of recycled paper bag shows potential advantages. Methods The two types of collection bag were compared evaluating the weight loss of food waste during the household storage, by means of an experimental assessment simulating the domestic dynamic bag filling. Moreover, the biomethane production of bags under anaerobic conditions was measured at the lab-scale level with Biochemical Methane Potential (BMP) tests. Results During the household storage, the breathable fabric of the paper allows for higher weight losses, ranging on average between + 29 and + 44% compared to bioplastic. BMP tests, carried out under different conditions (temperature, inoculum), showed a 2–14 times higher generation of methane by paper bags compared to bioplastic bags, when referred to 1 kg of inserted food waste. Conclusions Collecting the food waste inside paper bags shows advantages compared to the use of bioplastic bags. First, the waste collection is benefitted thanks to the lower weight of material to be transported to treatment plants, leading also to the possibility of decreasing the collection frequency. Moreover, paper resulted more compatible than bioplastic with the anaerobic digestion treatment, which is currently rapidly increasing as a food waste management option. Graphic Abstract

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Section: Bmp Testssupporting

confidence: 84%

Section: Bmp Testssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

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Effect of Paper vs. Bioplastic Bags on Food Waste Collection and Processing

Dolci

Catenacci

Malpei

et al. 2021

Waste Biomass Valor

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“…The inoculum was prepared according to Vasmara et al (2015). AD was carried out according to Vasmara and Marchetti (2016). Following Chartrain and Zeikus (1986) and Wu et al (1992), the reaction mixture included 1 g of giant reed VS, 50 ml of sterilized phosphate‐buffered basal medium without energy sources (HM), and 5 ml of inoculum.…”

Section: Methodsmentioning

confidence: 99%

Biomass and methane yield of giant reed (Arundo donaxL.) as affected by single and double annual harvest

Ceotto

Vasmara²,

Marchetti³

et al. 2021

GCB Bioenergy

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The replacement of silage maize with giant reed as energy crop has been proposed as a mean for reducing the need of irrigation water as well as monetary and environmental costs of cultivation. Little is known about giant reed response to within‐season harvesting, and its effect on the methane production in anaerobic digestion. The effect of three harvest schedules on yield, biomass composition and methane production of giant reed was evaluated at one site of the Po Valley, northern Italy, for three consecutive years. In a completely randomized block design with four replicates the treatments applied annually were: (i) double harvest 1: first cut at the end of June + second cut at the beginning of October (DH1); (ii) double harvest 2: first cut at the end of July + second cut at the beginning of October (DH2); (iii) single harvest at the beginning of October (SH). The crop stand was established in the year 2015 and treatments were repeatedly applied in the years 2016, 2017 and 2018. The SH treatment determined the highest average annual dry matter (DM) yield (59.0 Mg DM ha−1). The DM yield for treatments with double harvest was significantly lower, that is, −30% for DH1 and −15% for DH2. In terms of specific methane yield there was little advantage in harvesting biomass twice during the growing season. The average specific methane yield varied substantially between years (i.e. from 144 to 233 ml CH4 g−1 VS), and in every year the values tended to decrease with the ageing of harvested biomass. Methane yield per hectare, however, was driven by DM yield, thus SH also determined the highest average value (9110 m3 CH4‐STP ha−1). In conclusion, the single annual harvest at the end of the growing season is an ideal strategy for maximizing methane production from giant reed.

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“…Anaerobic digestion was carried out in 118.5 mL reactors as previously described [22]. The reactors were plugged with butyl rubber stoppers and aluminum seals and they were incubated at 35 • C for 91 days.…”

Section: Anaerobic Digestionmentioning

confidence: 99%

Potassium Hydroxyde Pre-Treatment Enhances Methane Yield from Giant Reed (Arundo donax L.)

Vasmara¹,

Cianchetta

Marchetti³

et al. 2021

Energies

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The biogas production through the anaerobic digestion (AD) of giant reed (Arundo donax L.) biomass has received increasing attention. However, due to the presence of lignin, a low CH4 yield can be obtained. Aiming to improve the CH4 yield from giant reed biomass, the effectiveness of a thermo-chemical pre-treatment based on KOH was evaluated in this paper. The usefulness of a washing step before the AD was also assessed. The pre-treatment led to a specific CH4 yield up to 232 mL CH4 g−1 VS which was 21% higher than that from untreated biomass; the maximum daily rate of production was improved by 42%, AD duration was reduced by 10%, and CH4 concentration in the biogas was increased by 23%. On the contrary, the washing step did not improve the AD process. Besides, washing away the liquid fraction led to biomass losses, reducing the overall CH4 production. The use of a KOH-based pre-treatment appears as a good option for enhancing the AD of giant reed, also presenting potential environmental and agronomical benefits, like the avoidance of salty wastewater production and the likely improvement of the digestate quality, due to its enriched K content.

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Biogas Production From Biodegradable Bioplastics

Cited by 42 publications

References 0 publications

Effect of Paper vs. Bioplastic Bags on Food Waste Collection and Processing

Effect of Paper vs. Bioplastic Bags on Food Waste Collection and Processing

Biomass and methane yield of giant reed (Arundo donaxL.) as affected by single and double annual harvest

Potassium Hydroxyde Pre-Treatment Enhances Methane Yield from Giant Reed (Arundo donax L.)

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