Can bioplastics be treated in conventional anaerobic digesters for food waste treatment?

2021 ◽  
Vol 22 ◽  
pp. 101393
Author(s):  
Federico Battista ◽  
Nicola Frison ◽  
David Bolzonella
Keyword(s):  
Food Waste ◽  
Waste Treatment ◽  
Anaerobic Digesters

scholarly journals Reviewing the Anaerobic Digestion of Food Waste: From Waste Generation and Anaerobic Process to Its Perspectives

2018 ◽  
Vol 8 (10) ◽  
pp. 1804 ◽  
Author(s):  
Carlos Morales-Polo ◽  
María del Mar Cledera-Castro ◽  
B. Yolanda Moratilla Soria
Keyword(s):  
Anaerobic Digestion ◽  
Food Waste ◽  
Waste Treatment ◽  
Biogas Production ◽  
Waste Water Treatment ◽  
Numerical Data ◽  
Waste Generation ◽  
Anaerobic Digesters ◽  
Anaerobic Process ◽  
Common Solution

Discharge of waste in general, and food waste, in particular, is considered one of the major environmental problems today, as waste generation increases continuously, reaching values of 32% of all food produced worldwide. There are many different options that can be applied to the management and evaluation of waste treatment, and Anaerobic Digestion seems to be one of the most suitable solutions because of its benefits, including renewable energy generation in form of biogas. Moreover, if FW (food waste) is digested in anaerobic digesters from Waste Water Treatment Plants, a common solution is provided for both residues. Furthermore, co-digestion of food waste and sewage sludge provides benefits in terms of anaerobic process stability enhancing the buffer capacity of ammonia (for example) and biogas formation, which can be increased up to 80% when compared with monodigestion. The present paper reviews food waste anaerobic digestion from its generation, characteristics and different options for its management, and it does focus specifically on the anaerobic digestion and co-digestion process, stages, limiting rates and parameters, utilizing numerous experiences, strictly related to food waste. Pre-treatments are also considered as they are important and innovative for enhancing biogas production and its methane yield. The paper shows an extensive collection of pre-treatments, its basics, improving factors, and numerical data of biogas formation improvements that are related both to substrate modification and to the synergistic effect of co-digestion, which could lead to an increase of methane production from 11% to 180%.

Food waste treatment option selection through spherical fuzzy AHP

2021 ◽  
pp. 1-11
Author(s):  
Aysu Melis Buyuk ◽  
Gul T. Temur
Keyword(s):  
Treatment Option ◽  
Food Waste ◽  
Waste Treatment ◽  
Fuzzy Ahp ◽  
Treatment Options ◽  
Analytic Hierarchy ◽  
Food Treatment ◽  
Novel Approach ◽  
Proposed Model ◽  
Option Selection

In line with the increase in consciousness on sustainability in today’s global world, great emphasis has been attached to food waste management. Food waste is a complex issue to manage due to uncertainties on quality, quantity, location, and time of wastes, and it involves different decisions at many stages from seed to post-consumption. These ambiguities re-quire that some decisions should be handled in a linguistic and ambiguous environment. That forces researchers to benefit from fuzzy sets mostly utilized to deal with subjectivity that causes uncertainty. In this study, as a novel approach, the spherical fuzzy analytic hierarchy process (SFAHP) was used to select the best food treatment option. In the model, four main criteria (infrastructural, governmental, economic, and environmental) and their thirteen sub-criteria are considered. A real case is conducted to show how the proposed model can be used to assess four food waste treatment options (composting, anaerobic digestion, landfilling, and incineration). Also, a sensitivity analysis is generated to check whether the evaluations on the main criteria can change the results or not. The proposed model aims to create a subsidiary tool for decision makers in relevant companies and institutions.

Exploitation of Digestate from Thermophilic and Mesophilic Anaerobic Digesters Fed with Fermentable Food Waste Using the MFC Technology

2021 ◽  
Author(s):  
Αsimina Tremouli ◽  
Theofilos Kamperidis ◽  
Pavlos K. Pandis ◽  
Christos Argirusis ◽  
Gerasimos Lyberatos
Keyword(s):  
Food Waste ◽  
Anaerobic Digesters

scholarly journals Screening of Effective Media for Black Soldier Fly Larvae Used in Food Waste Treatment

2020 ◽  
Vol 42 (10) ◽  
pp. 463-471
Author(s):  
Chul-Hwan Kim ◽  
Kwanyoung Ko ◽  
Jongkeun Lee ◽  
Haegeun Chung
Keyword(s):  
Food Waste ◽  
Wheat Bran ◽  
Waste Treatment ◽  
Treatment Method ◽  
Treatment Technology ◽  
Black Soldier Fly ◽  
Black Soldier Fly Larvae ◽  
Fly Larvae ◽  
By Products ◽  
Bean Sprouts

Objectives : Black soldier fly larvae (BSFL) are organisms that effectively decompose various types of organic waste including food waste, and food waste treatment using BSFL is attracting attention as a sustainable waste treatment method. However, food waste discharged from Korea has a wide variety of properties, and its high salt concentration limits its treatment by BSFL. Therefore, to increase the efficiency of food waste treatment using BSFL, it is necessary to increase the quality of food waste as a production medium for BSFL. In this study, the ratio of protein and fat was adjusted by adding bean sprouts and wheat brans to food wastes treated at high temperature under vacuum, and whether such medium is suitable for rearing BSFL was investigated.Methods : To improve the medium, the ratio of protein and fat was adjusted to approximately 2:1 by adding bean sprouts and bran residue to food waste. Subsequently, the growth and development rate of BSFL reared on chicken feed, food waste, food waste + bean sprouts, food waste + wheat bran were measured. Also, the decomposition rate of each medium was analyzed.Results and Discussion : The growth rate of BSFL grown on food waste + wheat bran medium was similar to that of BSFL reared on chicken feed. The speed of development at day 7 was also the fastest for BSFL reared with food waste + wheat bran medium and chicken feed. These results suggest that the mixed medium to which wheat bran has been added to food waste has the potential to be used as a commercial medium for BSFL production. The survival rate of BSFL was 89% or higher in all media.Conclusions : When food waste was used alone, BSFL development was poor compared to that in media combined with agricultural by-products such as bean sprouts and wheat bran. Therefore, to use food waste as a rearing medium of BSFL, it is necessary to adjust the ratio of protein and fat by adding various agricultural by-products and reduce salinity. For the improvement of food waste treatment technology using BSFL, mass rearing of useful insects such as BSFL, and promotion of the use of agricultural by-products, additional research is needed to optimize the composition of rearing medium based on food waste.

Temporal variation in methanogen communities of four different full-scale anaerobic digesters treating food waste-recycling wastewater

2014 ◽  
Vol 168 ◽  
pp. 59-63 ◽  
Author(s):  
Joonyeob Lee ◽  
Byungchul Hwang ◽  
Taewoan Koo ◽  
Seung Gu Shin ◽  
Woong Kim ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Food Waste ◽  
Waste Recycling ◽  
Full Scale ◽  
Anaerobic Digesters ◽  
Food Waste Recycling

Food Waste Treatment Methodologies

2008 ◽  
pp. 345-410 ◽  
Author(s):  
Ioannis S. Arvanitoyannis ◽  
Aikaterini Kassaveti ◽  
Demetrios Ladas
Keyword(s):  
Food Waste ◽  
Waste Treatment

scholarly journals Properties of Biochar from Anaerobically Digested Food Waste and Its Potential Use in Phosphorus Recovery and Soil Amendment

2018 ◽  
Vol 10 (12) ◽  
pp. 4692 ◽  
Author(s):  
Shakib Alghashm ◽  
Shiying Qian ◽  
Yinfeng Hua ◽  
Jian Wu ◽  
Haitao Zhang ◽  
...  
Keyword(s):  
Food Waste ◽  
Soil Amendment ◽  
Waste Treatment ◽  
Pyrolysis Temperature ◽  
Biogas Production ◽  
Treatment Plant ◽  
Phosphorus Recovery ◽  
Waste Treatment Plant ◽  
Pseudo Second Order ◽  
Biogas Residue

The disposal of a large amount of biogas residue from anaerobically digested food waste is a burden for biogas production. The aim of this work was to investigate biogas residue as a potential feedstock, by preparing biochar at a broad pyrolysis temperature range of 400–900 °C. The properties required for phosphorus recovery and soil amendment application were evaluated. Biogas residue collected from an urban food waste treatment plant was pyrolyzed in a laboratory scale reactor. It was found that by increasing the pyrolysis temperature, the yield of biochar decreased and the pH, electrical conductivity and Brunauer–Emmett–Teller surface area increased. The amount of phosphorus adsorbed onto the biogas residue-derived biochar (BRB) at 900 °C was larger than that of other kinds of biochar. The kinetics of phosphorus (P) adsorption on BRB could be described by the pseudo-second-order equation. The pot experiments showed that the resulting biochar is beneficial for the growth of cabbage. Overall, turning solid residue from the anaerobic digestion of food waste for biogas production into biochar shows good prospects as a means of solving the disposal problem, while creating new markets for food waste biogas residue.

Sign in / Sign up

Export Citation Format

Share Document