Evaluation of biochar addition and circulation control strengthening measures on efficiency and microecology of food waste treatment in anaerobic reactor

2021 ◽  
Vol 297 ◽  
pp. 113215
Author(s):  
Lijian Zhao ◽  
Chengyuan Su ◽  
Anliu Wang ◽  
Pengfei Wang ◽  
Zhuxi Chen ◽  
...  
Keyword(s):  
Food Waste ◽  
Waste Treatment ◽  
Circulation Control ◽  
Anaerobic Reactor

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

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.

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.

Enhanced biogas production and in situ ammonia recovery from food waste using a gas-membrane absorption anaerobic reactor

2019 ◽  
Vol 292 ◽  
pp. 121864 ◽  
Author(s):  
Xuchuan Shi ◽  
Jiane Zuo ◽  
Mengyu Zhang ◽  
Yajiao Wang ◽  
Heng Yu ◽  
...  
Keyword(s):  
Food Waste ◽  
Biogas Production ◽  
Membrane Absorption ◽  
Anaerobic Reactor ◽  
Ammonia Recovery

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.

Economics analysis of food waste treatment in China and its influencing factors

2020 ◽  
Vol 15 (2) ◽  
Author(s):  
Ting Chen ◽  
Yingying Zhao ◽  
Xiaopeng Qiu ◽  
Xiaoyan Zhu ◽  
Xiaojie Liu ◽  
...  
Keyword(s):  
Influencing Factors ◽  
Food Waste ◽  
Waste Treatment ◽  
Economics Analysis
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