Israeli Scientists Find Promising Remedy for Ocean Spills

Researchers in Israel have unveiled a promising solution to oil pollution in marine environments. In a study recently published in Chemical Engineering Journal Advances, the team developed a plant-based cellulose aerogel ‘sponge’ designed to absorb crude oil and fuel from water, offering a potential new approach to oil spill cleanup and environmental protection. 

As the researchers explain in the study’s abstract, oil and petroleum spills pose serious environmental threats, disrupting ecosystems and contaminating both water and soil. Their innovative material could offer a promising strategy for mitigating these impacts, supporting more effective spill containment and potentially contributing to long-term environmental recovery. 

The Status Quo of Oil Spills
Stanford University’s Understand Energy Learning Hub explains that oil spills typically involve either crude oil, the unrefined petroleum extracted from the ground, or fuel oil, a refined product derived from it. 

According to The Jerusalem Post, while oil spills occur regularly worldwide, catastrophic disasters are far less common than everyday leaks. Surprisingly, natural seepage from seabed rocks accounts for an estimated 40–50% of oil entering the oceans. 

Conventional cleanup methods, as reported by JNS, rely on skimming and absorbing oil from the water. However, these mechanical methods merely collect the petroleum, which must then be stored, separated from water, and recycled or disposed of. 

An alternative is to rely on naturally occurring microorganisms to break down the oil, but this process is slow because essential nutrients are often scarce. Adding liquid fertilizer can help, yet ocean currents quickly dilute and disperse it, limiting its effectiveness. 

How Does This Sponge Work?
Developed by scientists at Ben-Gurion University of the Negev (BGU), the innovative material both captures oil pollution and promotes its biological breakdown. According to The Jerusalem Post, laboratory tests showed that the cellulose-based sponge can absorb approximately 80–100 times its own weight in crude oil, fuel, tar, and other hydrocarbons while repelling water.

Its effectiveness lies in its dual function: rapid pollutant absorption and longer-term biodegradation. Enriched with nitrogen and phosphorus, the porous material supplies essential nutrients to oil-degrading bacteria, helping them break down the trapped hydrocarbons more efficiently.

The technology was developed at BGU’s Environmental Biotechnology Laboratory under Professor Ariel Kushmaro and Dr. Danit Lisa Karsagi Biron of the Faculty of Engineering. By enriching cellulose fibers with nutrients, then freeze-drying and heat-treating them, the team created an ultra-light aerogel sponge capable of rapidly absorbing large quantities of oil while supporting its subsequent biological degradation.

In the study’s conclusion, the researchers refer to this as a “bioavailable source of nitrogen and phosphorus for bacteria to utilize and biodegrade the absorbed hydrocarbons.”

From Lab Setting to Future Real-World Ocean Trials
The collaboration between engineering and biology at BGU has produced a promising new approach to oil spill management. The researchers suggest that further optimization and scaling could establish the nutrient-enriched sponge as a more sustainable tool for marine pollution control.

As quoted by The Times of Israel, Professor Ariel Kushmaro described the technology as a “versatile and sustainable platform” for treating oil spills. By combining rapid absorption with biological degradation, it offers a potential alternative to conventional cleanup methods, addressing both immediate containment and long-term environmental recovery.

According to JNS, the team’s next step is to test the material in a polluted marina, where oil contamination is common. However, real-world conditions present challenges absent from laboratory experiments. These present what Kusmaro calls a “less forgiving laboratory.” Open sea conditions include waves, currents, fluctuating temperatures and salinity, and diverse microbial communities. Although the sponge was designed with practical applications in mind, its effectiveness must still be validated through field trials.

Meanwhile, the team is pursuing patent protection through BGN Technologies, BGU’s technology commercialization company.