Greenhouse gas emissions from small-scale fly larvae composting with Hermetia illucens

Waste Management
E ErmolaevB Vinnerås

Abstract

Fly larvae composting is an emerging waste treatment alternative with great potential to increase revenue from food waste management. For wider implementation, fly larvae composting has to be evaluated in comparison with conventional systems, based on direct greenhouse gas (GHG) emission data for the treatment process, which are currently limited. This study evaluated direct emissions of CO2, CH4, N2O and NH3 from composting of food waste using black soldier fly (BSF) larvae (Hermetia illucens). Use of BSF larvae-associated bacteria in 7-day pre-treatment and seeding at larvae treatment start were evaluated and compared to larvae treatment without bacteria addition. The treatments were performed in a set of 14-day laboratory-scale experiments. Mean substrate reduction was 49 ± 8% and bioconversion ratio was 24 ± 8% (both dry matter basis). Direct GHG emissions from the fly larvae treatment process were generally very small, with emissions of CH4 and N2O equivalent to 0.38 kg CO2-equivalents per ton food waste treated assuming global warming potential over 100 years, while mean total CO2 emissions were 96 g CO2 per kg food waste treated. Additional emissions could be expected to occur in the pre-treatment process, which did not ...Continue Reading

Citations

Jul 29, 2020·Environmental Science and Pollution Research International·Wancheng PangShucai Wang
Dec 18, 2020·Frontiers in Microbiology·Moritz GoldAlexander Mathys
Jul 10, 2021·Environmental Monitoring and Assessment·Joan Sanchez MatosJose Adolfo de Almeida Neto
Sep 11, 2021·Environmental Science and Pollution Research International·Mingyue XuChuanfu Wu

❮ Previous
Next ❯

Related Concepts

Related Feeds

Aging Epidemiology

This feed focuses on epidemiology of aging and aging-related conditions, including Alzheimer’s disease, dementia, and age-associated cognitive impairment. Here is the latest research.

Age-related Dementia

Dementias are a group of conditions, including Alzheimer's disease, vascular dementia, and frontotemporal dementia, characterized by deficiencies in cognitive abilities. Age-related dementia refers to dementias that occur in older individuals, usually 60+ years old, in contrast to early-onset dementia. Follow the latest research on age-related dementia here.