Impact of COVID-19 on food waste behaviour of families: Results from household waste composition audits

The feed sector requires new sustainable sources of protein, and at the same time better waste management practices are required to decrease and upcycle post-consumers’ food waste (catering and organic household waste), which is currently used for energy production or discharged as waste. The production of Hermetia illucens larvae (L.) (BSFL) was conducted in 15 batches at pilot scale. Furthermore, a feeding strategy experiment was conducted to optimize feedings and decrease handling, followed by a digestibility study for assessing the applicability of BSFL as a feed ingredient. About 190 kg of food waste was used to produce 79 kg of BSFL. The bioconversion of food waste into BSFL was found to be highly efficient, with feed conversion rate (FCR) values ranging between 1.7 and 3.6, when assessed on dry matter. The feeding experiment showed similar BSFL and insect frass production as well as similar FCR, revealing that a decrease in handling can be obtained if two feeding episodes are used. The digestibility of protein and fat was high at 86.2 and 90.4% and revealed that BSFL meal can be successfully used as a protein and fat source in feed for carnivore animals outside the food chain (e.g., pet food).

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Method for residual household waste composition studies

Waste Management ◽

10.1016/j.wasman.2015.08.032 ◽

2015 ◽

Vol 46 ◽

pp. 3-14 ◽

Cited By ~ 19

Author(s):

Olli Sahimaa ◽

Mari Hupponen ◽

Mika Horttanainen ◽

Jaana Sorvari

Keyword(s):

Composition Studies ◽

Household Waste ◽

Waste Composition

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RESEARCHES OF ODOUR EMITTED BY HOUSEHOLD WASTE / MAISTO ATLIEKŲ SKLEIDŽIAMŲ KVAPŲ TYRIMAI IR VERTINIMAS

Mokslas - Lietuvos ateitis ◽

10.3846/mla.2015.815 ◽

2015 ◽

Vol 7 (4) ◽

pp. 413-417 ◽

Cited By ~ 1

Author(s):

Eglė Marčiulaitienė ◽

Tadas Lukauskas

Keyword(s):

Food Waste ◽

Hydrogen Sulphide ◽

Household Waste ◽

Animal Origin ◽

Fish Waste ◽

Ammonia Gas ◽

Decomposition Of Organic Matter ◽

Environment Temperature ◽

Unpleasant Smell ◽

Dynamic Olfactometry

The article deals with odour emitted by household waste, the chemical composition of household waste. The experiment was made with food waste (1000 g) placed in 5 litter containers. Food waste was containing products of animal origin (meat, fish, dairy products) and plant origin (vegetables, fruit) waste. Time of the experiment was 14 days 19±3 °C at environment temperature. Odour concentration is determined by dynamic olfactometry method. Studies have shown that the strongest odour of all household waste used in this experiment was emitted by meat and fish waste (76 444 OUE/m3). Meat and fish waste emits the strongest odour as waste contains proteins, their decomposition releases into the environment a strong unpleasant odour, hydrogen sulphide and ammonia. Protein degradation releases into the environment are, characterized by a strong unpleasant smell of hydrogen sulphide and ammonia gas. During the anaerobic decomposition of organic matter a variety of other fragrant compounds: alcohols (e.g., ethanol and methanol), vinegar, formic acid, etc. is found. Straipsnyje nagrinėjami eksperimentiniai tyrimai, susiję su kvapų išsiskyrimu iš biologiškai skaidžių maisto (virtuvės) atliekų. Eksperimentas atliekamas maisto atliekas (po 1000 g) sudėjus į 5 litrų talpas. Maisto atliekas sudaro gyvūninės (mėsa, žuvis, pieno produktai) ir augalinės (daržovės, vaisiai) kilmės atliekos. Eksperimentas vyko 14 parų 19±3 °C aplinkos temperatūroje. Kvapo koncentracija nustatoma dinaminės olfaktometrijos metodu. Tyrimais nustatytos stipriausią kvapą skleidžiančios virtuvės atliekos: mėsos ir žuvies atliekos (76444 OUE/m3). Mėsos ir žuvies atliekos skleidžia stipriausią kvapą, nes šių atliekų sudėtyje yra daug baltymų. Skylant baltymams į aplinką išsiskiria stipriu nemaloniu kvapu pasižyminčios sieros vandenilio ir amoniako dujos. Vykstant anaerobiniam organinių medžiagų skaidymui, taip pat susidaro daug kitų kvapnių junginių: alkoholiai (pvz., etanolis ir metanolis), actas, skruzdžių rūgštis ir kt.

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Integrated reverse supply chain model for food waste based on industry 4.0 revolutions

Quality Assurance and Safety of Crops & Foods ◽

10.15586/qas.v13i4.1002 ◽

2021 ◽

Vol 13 (4) ◽

pp. 70-83

Author(s):

Sharareh Mohajeri ◽

Fatemeh Harsej ◽

Mahboubeh Sadeghpour ◽

Jahanfar Khaleghi Nia

Keyword(s):

Supply Chain ◽

Food Waste ◽

Industry 4.0 ◽

Waste Recycling ◽

Appropriate Technology ◽

Household Waste ◽

Chain Model ◽

Reverse Supply Chain ◽

Whale Optimization ◽

Multi Phase

The present research offeres a model to the advantage of operations for the food reverse supply chain by perfor-mancing Industry 4.0 Revolutions model of expanding a fuzzy multi-phase model for the food waste gathering reverse supply chain. This study introduces, a household waste recycling machine, which symbolizes the Industry 4.0 Revolutions. Also, electric-type vehicles have been considered for collection and delivery in accordance with the Industry 4.0 Revolutions. The rate of technology has been described in recycling stations. Several methods with different technologies to recycle food waste have been selected and assessed based on the Industry 4.0 Revolutions indicators. The food wastes are sent to recycling stations, that is places maintained, operated or used to store, buy or sell wastes before they recycled with appropriate technology. The understudy model is multi-objective, maximizing the benefit of recycling and customer response and minimizing the adverse effects of environmental pollution and transportation costs. In this research, the whale optimization algorithm is applied. The present work proposes an end-to-end solution for Reverse Supply Chain Management for food waste based on the Industry 4.0 Revolutions.

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Modern utilisation of organic waste

Linnaeus Eco-Tech ◽

10.15626/eco-tech.1999.024 ◽

2019 ◽

pp. 221-227

Author(s):

Dr. Violeta Jvinskiene

Keyword(s):

Food Waste ◽

Organic Waste ◽

Point Of View ◽

Household Waste ◽

Private Company ◽

Main Method ◽

Agriculture Industry ◽

Alternative Product ◽

Managing Strategy ◽

City District

A lot of waste from agriculture, industry, household and food waste is accumulated every year in Lithuania. Waste is polluting environment very intensively. From sanitarian point of view there can appear dangerous sources for people and other biological objects. The main method for utilisation of waste still remains landfilling. So as a huge problem appears operation of landfills, cumulation of leachate and biogas. The last years Vilnius city municipality directly changed the waste managing strategy. As it was estimated, food waste forms about 46,6 -56,6 % from total household waste amount. It was decided to turn this source from landfill to composting facilities, organise separate food waste collection from companies and habitants. The system was iniciated in 1997, but it develops very slowly. A private company "Chitinas" has started its work independently in neighbouring Vilnius city district. Two main unordinal methods were used for destruction of organic waste, both very usual in nature, but still rarely used in practice by farmers. Such methods are called in Lithuania "nontraditional farming". We estimate these methods as modem and perspective for organic waste destruction in big cities. With their help we can get ecologically safe, good natural fertilizers, without seeds and infections, having less nitrates and fosphates. Besides, we get an alternative product - material called "chitin", which could be chemically purified and has a perfect future in chemistry and medicine.

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