Kerosene is harmful to the environment at every stage of its life cycle, from extraction and refining through combustion and accidental spillage. It generates black carbon that warms the climate, releases toxic pollutants into indoor and outdoor air, poisons soil and water when spilled, and contributes to contrail-driven warming when burned as jet fuel at high altitude. The scale of the damage depends on where and how kerosene is used, but the environmental case against it is broad and well documented.
Black Carbon From Household Lamps
One of kerosene’s most underestimated environmental harms comes from a source that rarely makes headlines: the simple wick lamp. Hundreds of millions of households in developing countries still rely on kerosene lamps for light, and laboratory and field measurements show that roughly 7 to 9 percent of the kerosene consumed by these lamps converts into carbonaceous particulate matter that is nearly pure black carbon. That rate is far higher than older estimates suggested, pushing estimated black carbon emissions from kerosene lamps to around 270 gigagrams per year and generating climate forcing equal to about 7 percent of all black carbon from other energy-related sources combined.1PubMed Central. Household Light Makes Global Heat: High Black Carbon Emissions From Kerosene Wick Lamps
Black carbon is not a greenhouse gas in the traditional sense. It is soot, tiny particles that absorb sunlight directly and warm whatever they settle on. When black carbon lands on snow or ice, it darkens the surface and accelerates melting. Modeling work has estimated that reducing fossil-fuel soot emissions could lower temperatures above the Arctic Circle by more than a degree Celsius.2Journal of Geophysical Research: Atmospheres. Short‐term effects of controlling fossil‐fuel soot, biofuel soot and gases, and methane on climate, Arctic ice, and air pollution health Because kerosene lamps produce such concentrated black carbon, they punch well above their weight in climate terms relative to the modest amount of fuel each household actually burns.
What Kerosene Does to Indoor Air
The environmental harm from kerosene is not limited to what drifts into the atmosphere. A large share of its pollution stays indoors, exposing the people who burn it. Kerosene space heaters are significant sources of submicron particles, nitrogen oxides, and carbon dioxide. Measurements of indoor air during heater use show elevated concentrations of nitrogen dioxide and carbon dioxide that scale with how long the heater runs, raising concerns about chronic exposure in poorly ventilated homes.3Chemosphere. Impact of kerosene space heaters on indoor air quality
A study of homes in Santiago, Chile, reinforced the point. Homes using kerosene heaters had elevated fine particulate matter along with sulfate, elemental carbon, organic carbon, metals, and polycyclic aromatic hydrocarbons. When a statistical model isolated the effect of different heater types with windows closed, kerosene heaters raised indoor fine particulate concentrations by about 46 micrograms per cubic meter compared to homes with electric or central heating.4PubMed. Effect of gas and kerosene space heaters on indoor air quality: a study in homes of Santiago, Chile For context, the World Health Organization’s guideline for daily average fine particulate exposure is 15 micrograms per cubic meter. A kerosene heater alone can triple that just from one appliance running in a closed room.
When kerosene is swallowed accidentally, its physical properties make it especially dangerous. The fuel’s low viscosity and high volatility mean it aspirates easily into the lungs, and aspiration pneumonitis is the most common result of kerosene ingestion, particularly in children.5PubMed Central. Kerosene, Camphor, and Naphthalene Poisoning in Children Household storage of kerosene in unmarked containers remains a persistent safety problem in many parts of the world.
Soil Contamination and Microbial Damage
Kerosene spills, whether from leaking storage tanks, transportation accidents, or improper disposal, damage soil ecosystems from the ground up. When kerosene saturates soil, it shifts the balance of microbial communities. In heavily contaminated soils, anaerobic bacteria that metabolize hydrocarbons become dominant while aerobic bacteria decline. How quickly the soil bounces back depends on soil type. In one study, the microbial community in organic-rich peat soils recovered within six months, but sandier and less organic soils had not recovered even after a year.6PubMed Central. The Influence of Kerosene on Microbiomes of Diverse Soils
The soil’s ability to decompose organic matter also takes a hit. At moderate contamination levels, the disruption to cellulolytic activity (the breakdown of plant-derived cellulose, a key soil function) is reversible. But at higher concentrations, the damage persists. Laboratory experiments found that kerosene loads of 25 grams per kilogram of soil or more suppressed cellulolytic activity in both retisol and arenosol soil types for the entire 13-month observation period.7PubMed Central. The Effect of Kerosene Pollution on the Cellulolytic Activity of Albic Retisols and Arenosols (Aridic): A Laboratory Experiment In practical terms, that means heavily contaminated soil loses some of its ability to recycle nutrients and support plant growth for at least a year, and possibly longer.
Aquatic Toxicity
When kerosene reaches waterways, it carries a cocktail of petroleum hydrocarbons that accumulate in aquatic organisms. The contamination of water bodies by crude oil products like kerosene is recognized as a serious threat because of the bioaccumulative nature of the toxicants involved. In fish, kerosene exposure can cause liver damage, kidney damage, blood disorders, and behavioral changes.8Pharmacological Research – Reports. The protective potential of Blighia sapida on the behavioural and hematobiochemical disruption in kerosene-exposed Clarias gariepinus: In Vivo and In Silico evaluation These effects ripple through food webs, particularly in tropical regions where kerosene use is widespread and waterways are often unprotected from runoff.
Kerosene spills are also difficult to contain in aquatic settings because the fuel spreads quickly on water surfaces. Even small amounts can form a film that interferes with oxygen exchange, harming organisms that depend on dissolved oxygen near the surface.
Kerosene as Jet Fuel and High-Altitude Warming
Most of the world’s kerosene is consumed not in lamps or heaters but as aviation fuel. Jet fuel is essentially a refined grade of kerosene, and burning it at cruising altitude creates a set of environmental problems distinct from ground-level combustion. The most significant of these is contrail cirrus, the wispy cloud formations that trail behind aircraft and sometimes spread into broader cloud sheets.
Contrail cirrus clouds trap outgoing heat, producing a net warming effect. Their global average radiative forcing has been estimated at 57 milliwatts per square meter, making them the single largest contributor to aviation’s overall climate impact, larger than the warming from aircraft CO₂ or nitrogen oxide emissions.9Communications Earth & Environment. Cleaner burning aviation fuels can reduce contrail cloudiness One estimate puts the total effect of aircraft-induced clouds at roughly 2 percent of the Earth’s total human-caused radiative forcing.10Transportation Research Record: Journal of the Transportation Research Board. Primer on Aircraft Induced Clouds and Their Global Warming Mitigation Options
Sustainable aviation fuels, which can be blended with or substituted for conventional kerosene, offer one path forward. These fuels are chemically similar to kerosene-based jet fuel but carry lower carbon emissions over their life cycle, partly through the use of biomass feedstocks or carbon capture during production.11Carbon Capture Science & Technology. Sustainable aviation fuels: Key opportunities and challenges in lowering carbon emissions for aviation industry Because sustainable aviation fuels tend to contain fewer aromatic compounds, they also produce fewer soot particles during combustion, which in turn reduces the formation and optical thickness of contrails. The cleaner the burn, the less contrail-driven warming.
Pollution Around Airports
You don’t have to fly to be affected by kerosene-based jet fuel. Communities near airports are exposed to ultrafine particles generated during takeoffs and landings. Measurements near Los Angeles International Airport found average ultrafine particle counts of about 50,000 per cubic centimeter at a site 500 meters downwind, with transient peaks during takeoffs reaching 4.8 million particles per cubic centimeter directly downwind of a runway. The particles were dominated by extremely small sizes, around 10 to 15 nanometers, and elevated counts persisted at least 900 meters from the runway.12Atmospheric Environment. The Los Angeles International Airport as a source of ultrafine particles and other pollutants to nearby communities
More recent work shows the plume extends even further. One study found that downwind ultrafine particle concentrations exceeded the WHO’s threshold for high short-term exposure out to a distance of 4.4 kilometers from an airport, with measurable yearly increases in particle counts at 2 to 5 kilometers away.13Environment International. Dispersion of ultrafine particle pollution from an international airport: Characteristics and short- and long-term effects in surrounding areas Among adults with asthma living near airports, exposure to airport-derived ultrafine particles has been linked to increases in a circulating marker of systemic inflammation.14PubMed Central. Short-Term Effects of Airport-Associated Ultrafine Particle Exposure on Lung Function and Inflammation in Adults with Asthma The health implications of living in an airport’s pollution footprint are only starting to get serious attention.
Switching Away From Kerosene in Households
For the hundreds of millions of households that still depend on kerosene for cooking or lighting, switching to almost any alternative brings environmental benefits. Life-cycle comparisons of cooking fuels in India found that liquefied petroleum gas outperformed kerosene on the majority of environmental indicators examined.15Energy Policy. Life cycle inventory for cooking: Some results for the use of liquefied petroleum gas and kerosene as cooking fuels in India Indonesia demonstrated what a national-scale transition looks like in practice. During the first three years of a government program to eliminate kerosene cooking, the country replaced about 4.9 million metric tons of kerosene with 2.6 million metric tons of LPG, cutting CO₂ emissions by 7.6 million metric tons and reducing the combined global warming potential from residential cooking by about 2 percent.16Atmospheric Environment. Assessment of emissions of greenhouse gases and air pollutants in Indonesia and impacts of national policy for elimination of kerosene use in cooking
For lighting specifically, the gains from going solar are dramatic. A randomized trial in rural Uganda found that replacing fuel-based lighting with solar systems reduced personal black carbon exposure by about 91 percent.17PubMed Central. Effect of a solar lighting intervention on fuel-based lighting use and exposure to household air pollution in rural Uganda: A randomized controlled trial Scaling that idea across East Africa, one modeling study estimated that fully replacing kerosene-based lighting with renewable electricity would cut black carbon emissions in the region by 4.4 gigagrams per year.18Energy for Sustainable Development. Health and environmental impacts of replacing kerosene-based lighting with renewable electricity in East Africa An economic analysis of India’s kerosene subsidies found that transitioning households to small solar lighting systems by 2030 could generate net present benefits of around 12 billion dollars from fuel savings alone, not counting health or foreign exchange gains.19Environmental Research Letters. Kerosene subsidies for household lighting in India: what are the impacts? The environmental and economic arguments align here in a way that makes continued kerosene subsidies genuinely hard to justify.
Can Contaminated Land Be Cleaned Up?
Bioremediation, using bacteria to break down petroleum hydrocarbons in contaminated soil and water, is one of the most promising approaches for dealing with kerosene spills after they happen. Researchers have isolated indigenous bacteria from hydrocarbon-contaminated sites that can degrade substantial fractions of kerosene in relatively short time frames. In one set of experiments, bacterial isolates broke down 57 to 91 percent of kerosene at a 5 percent concentration within 15 days.20PubMed Central. Kerosene Biodegradation by Highly Efficient Indigenous Bacteria Isolated From Hydrocarbon-Contaminated Sites Separately, bacteria isolated from an oil refinery in Iran degraded between 48 and 67 percent of kerosene at 5 percent concentration within seven days.21Journal of Environmental Chemical Engineering. Kerosene biodegradation ability and characterization of bacteria isolated from oil-polluted soil and water
Adding surfactants, essentially soap-like compounds, can speed the process by helping kerosene disperse in soil so that bacteria can access it more readily. In column experiments simulating contaminated sandy aquifers, a surfactant-nutrient mixture achieved roughly 62 to 64 percent elution of kerosene over 30 days, while vessel-based biodegradation tests reached 68 percent degradation in 21 days.22PubMed. In-situ surfactant/surfactant-nutrient mix-enhanced bioremediation of NAPL (fuel)-contaminated sandy soil aquifers These are laboratory and pilot-scale results, and real-world cleanups face complications like variable soil types, groundwater flow, and mixed contaminants. But the underlying biology is encouraging: nature already has organisms that eat kerosene, and we can help them work faster.
Kerosene, Rockets, and the Ozone Layer
A lesser-known environmental dimension of kerosene involves its use as rocket propellant. RP-1, the fuel that powers many launch vehicles, is a highly refined kerosene. As commercial spaceflight scales up, the black carbon and other emissions deposited directly into the stratosphere are drawing new scrutiny. Modeling of an ambitious near-future launch scenario found that black carbon from rocket exhaust could warm the stratosphere by up to 1 degree Celsius during summer months. That warming accelerates chemical reactions that destroy ozone, with upper stratospheric ozone declining by roughly 3 percent in simulations representing around 2,000 launches per year by 2030.23PubMed Central. Near-future rocket launches could slow ozone recovery
The ozone impacts are most pronounced over the Southern Hemisphere, where total column ozone decreased by up to 3 percent in the models. The concern is not that rockets are currently a dominant source of ozone depletion, but that launch rates are growing rapidly and the emissions are deposited exactly where they do the most damage: high in the stratosphere, where black carbon particles spread widely and persist. The effects come from a combination of kerosene-derived soot, hydrogen chloride from solid rocket motors, and hypergolic propellants, but kerosene combustion is a key contributor to the black carbon portion. This is a problem that barely existed a decade ago and is scaling quickly.
Fugitive Emissions From Storage
Even before kerosene is burned, storing and transporting it releases volatile organic compounds into the atmosphere. Petroleum refinery tank farms emit a mix of alkanes, alkenes, and aromatic hydrocarbons through evaporative losses. Measurements at one refinery found that about 61 percent of the total volatile organic compound emissions from the tank farm by volume were alkanes, with pentane being the single largest contributor.24PubMed Central. Emission losses and dispersion of volatile organic compounds from tank farm of petroleum refinery complex These fugitive emissions contribute to ground-level ozone formation when they react with nitrogen oxides in sunlight, adding a layer of environmental harm that occurs before any kerosene even reaches a consumer’s lamp, heater, or engine. Kerosene itself contains aromatic compounds, alkyl phenols, and sulfur-containing molecules like thiophenes,25Journal of Analytical and Applied Pyrolysis. Separation and direct-indirect analysis of six group components from liquids of kerosene co-refining all of which contribute to the fuel’s toxicity and environmental persistence when released.