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Food waste to bioenergy: current status and role in future circular economies in Indonesia

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Abstract

Like many countries, Indonesia generates large quantities of food waste. Food waste is poorly managed due to inadequate treatment practices, which has a harmful impact on the environment. This paper demonstrates the high potential for food waste valorization in Indonesia and outlines the optimal valorization pathways to inform future decision-making surrounding the management of this waste. This paper also compares various conversion technologies for transforming food waste into liquid, solid, and gaseous biofuels. The challenges and opportunities for wider implementation are also considered, including the integration of supply chains and the logistics of food waste management, the technological feasibility, and the persistent behaviors surrounding food waste and energy in Indonesia. The economic and environmental benefits, the perspectives of improved food waste management practices and sustainable fuels, as well as the policy landscape surrounding waste and sustainable energy are also explored. The challenges of scalability and commercialization are also highlighted in this paper. This review demonstrates the best pathways from food waste valorization to bioenergy, including biogas or biodiesel integrated with a black soldier fly larvae (BSFL) composting system. Despite the scale of resources in Indonesia, the pathways and technologies for processing food waste are lacking. Further in-depth studies are required to demonstrate the sustainability and feasibility of food waste transformation into bioenergy to realize its high value.

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Fig. 1

Adapted from Kiran et al. (2014))

Fig. 2

Adapted from Iakovou et al. (2010); Gold and Seuring (2011); and FAO (2011))

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Fig. 4
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Fig. 6

Adapted from Ohja et al. (2020) and KPMG (2020))

Fig. 7

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Abbreviations

3R:

Reduction, Reuse, And Recycle

AD:

Anaerobic Digestion

ADF:

Acid Detergent Fiber

AP:

Acidification Potential

BIOMIRU:

Biogas Mini Rumahan

BMP:

Biochemical Methane Potential

BSFL:

Black Soldier Fly Larvae

CBP:

Consolidated Bioprocessing

CHP:

Combined Heat and Process

COD:

Chemical Oxygen Demand

CSTR:

Continuous Stirrer Tank Reactor

CMUP:

Combined Mechanical-Ultrasonic Pre-Treatment

CV:

Calorific Value

DT:

Dry Torrefaction

EP:

Eutrophication Potential

EPS:

Extracellular Polymeric Substances

FAME:

Fatty Acid Methyl Ester

FAO:

Food and Agriculture Organisation

FVW:

Fruit and Vegetable Waste

FW:

Food Waste

GHG:

Greenhouse Gases

GWP:

Global Warming Potential

HHV:

High Heating Value

HMF:

Hydroxymethylfurfural

HoR:

House of Representatives

HOT:

Hydrothermal Oxidation

HRT:

Hydraulic Retention Time

HSW:

Household Solid Waste

HT:

Human Toxicity

HTL:

Hydrothermal Liquefaction

IUPTL:

Electricity Supply Business License

LAB:

Lactic Acid Bacteria

LCA:

Life Cycle Assessment

LPG:

Liquefied Petroleum Gas

MA:

Microwave-Assisted

MEMR:

Ministry of Energy and Mineral Resources of Republic of Indonesia

MEP:

Marine Eutrophication Potential

MSW:

Municipal Solid Waste

NDC:

Nationally Determined Contribution

NDF:

Neutral Detergent Fiber

NEP:

National Energy Policy

NRE:

New And Renewable Energy

OFMSW:

Organic Fraction of Municipal Solid Waste

ODP:

Ozone Layer Depletion

OLR:

Organic Loading Rate

ORP:

Oxidation–Reduction Potential

PEG:

Polyethylene Glycol

PF:

Photo Fermentation

PLTBg:

Biogas Power Plant

PLTBm:

Biomass Power Plant

PLTSa:

MSW Power Plant

PT. PLN:

The State Electricity Company

S:

Sonicated Pre-treatment

SBHR:

Sonicated Biological Hydrogen Reactor

SDS:

Sodium Dodecyl Sulphate

SHF:

Separated Hydrolysis Fermentation

SS:

Sewage Sludge

SSF:

Simultaneous Saccharification and Fermentation

TD:

Tofu Dregs

TEP:

Terrestrial Eutrophication Potential

TRL:

Technology Readiness Level

TS:

Total Solids

UA:

Ultrasonic-Acid Pre-Treatment

UASB:

Up-Flow Anaerobic Sludge Blanket

UB:

Ultrasonic-Base Pre-Treatment

UH:

Ultrasonic-Heat Pre-Treatment

US:

Unsonicated Pre-Treatment

VFA:

Volatile Fatty Acid

VS:

Volatile Solids

WtE:

Waste to Energy

WT:

Wet Torrefaction

ww:

Wet Weight

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Acknowledgements

The authors would like to thank Faculty of Agricultural Technology, Universitas Brawijaya for funding support through Review Article Writing Grant in 2020.

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Correspondence to Sri Suhartini.

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The authors declare no conflict of interest for the paper entitled “Food waste to bioenergy:  current status and role in future circular economies in Indonesia”. All author are agreed to submit the paper.

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Suhartini, S., Rohma, N.A., Elviliana et al. Food waste to bioenergy: current status and role in future circular economies in Indonesia. Energ. Ecol. Environ. 7, 297–339 (2022). https://doi.org/10.1007/s40974-022-00248-3

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  • DOI: https://doi.org/10.1007/s40974-022-00248-3

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