Ernest Solvay – Pioneer of Industrial Chemistry

Ernest Solvay (1838-1922) was a Belgian industrial chemist, best known for his development of a commercially viable ammonia-soda process for producing soda ash.

Introduction

This article on Ernest Solvay is in two parts. The first part is a timeline of his life and work. The second part looks at the importance of Solvay’s work for today’s industrial chemist. For this second article I am indebted to its author Mansur Sultani, who was himself an industrial chemist. It was Mansur who first suggested I cover Solvay in my series of Remarkable Belgians (which now numbers 33!). So let’s kick-off with an overview of his timeline.

The life and work of Ernest Solvay

Early life and education

• 1838, April 16: Born in Rebecq, Belgium, into a family of industrialists.
• 1850s: Due to health issues (likely pleurisy), he was unable to complete a formal university education but remained self-taught in chemistry and industrial processes.

Career and major inventions

• 1856: Began working in his family’s gasworks business, where he developed an interest in industrial chemistry.
• 1861: Invented the Solvay process, a more efficient method for producing sodium carbonate (soda ash) using salt, ammonia, and carbon dioxide.
• 1863: Founded the Solvay & Cie company with his brother Alfred Solvay in Couillet, Belgium to industrialize the production of soda ash.
• 1865: Established the first large-scale Solvay process plant, revolutionizing the soda ash industry.
• 1880s: Expanded Solvay & Cie internationally, opening factories in several European countries and the United States.
• 1889: Became a Belgian senator, advocating for education, science, and social welfare reforms.

Scientific and philanthropic contributions

• 1894: Established the Solvay Business School (now part of the Université Libre de Bruxelles).
• 1911: Organized the First Solvay Conference on Physics, bringing together leading physicists, including Einstein, Curie, and Planck, shaping the future of quantum mechanics.
• 1912: Founded the Solvay Institute of Physics and Chemistry, promoting scientific research.

Later years and death

• 1922: Retired from active business management but continued supporting scientific and philanthropic causes.
• 1922, 26 May: Died in Ixelles, Belgium, at the age of 84.

How Solvay shaped the modern chemical Industry

by Mansur Sultani

The ancient history of soda ash

The story of soda ash, like the story of alchemy itself, goes back to ancient Egypt. The Egyptians sought soda ash, or ntrj (which gives us natron and natrium from which Na, the chemical symbol for sodium comes), for mummification and glassmaking.

Natron, a naturally occurring blend of sodium carbonate and bicarbonate, was used to preserve bodies, ensuring their safe passage to the afterlife. The Egyptians extracted natron from dry lake beds, but the ash of certain plants could also produce soda ash. In Scotland there was a thriving soda ash industry using kelp from the sea, whereas in Spain the ashes of a cultivated plant named barilla were used to make soda ash.

Natural sources were insufficient

However, by the late 18th century these natural sources where incapable of meeting the demand for soda ash from the soap, textile and glass industries. In 1791 French physician Nicolas Leblanc developed  a process for manufacturing soda ash. It used sulfuric acid and brine (salt solution) amongst other things to produce soda ash on an industrial scale. However, it was costly and environmentally damaging, producing large amounts of waste and toxic byproducts.

Enter Ernest Solvay

In 1863 Ernest Solvay unveiled the Solvay process. It was a method that not only reduced costs but also minimized environmental impact by using brine, ammonia (as a catalyst) and limestone (as a source of carbon dioxide).  This process was a big leap that set the stage for modern industrial chemistry.

More factories are built

By 1864 Ernest Solvay had gained sufficient funds to build a small plant in Couillet near Charleroi , and by 1874 a bigger one in Nancy, France was constructed. As Solvay’s process gained traction, the ripples of his innovation spread far and wide. Factories sprung up, and the scale of soda ash production skyrocketed, driving advancements in glass manufacturing, detergents, and countless other industries. The Solvay process became a cornerstone, transforming the chemical landscape and spurring economic growth.

International production booms

By 1900 about 95% of soda ash consumed in the world was produced by Solvay’s process. In 2023 the global soda ash market was valued at $20 billion. The total world consumption of soda ash is currently approximately 60 million metric tons per year. On a per capita basis the United States, for example, consumes around 20 kg.

A global phenomenon

As you are reading these lines, Solvay operates numerous production sites globally, employing over 9,000 people across its 45 industrial sites in 41 countries. Some of the key locations include:

• United States: 7 production sites
• China: 5 production sites (where a Chinese chemist in 1930s changed the Solvay process to eliminate one of its waste products, calcium chloride)
• Germany: 5 production sites
• France: 5 production sites
• Brazil: 5 production sites
• India: 1 production site
• Belgium: 3 production sites

Moving towards sustainability

But Solvay’s story does not end there. The company he founded has grown into a global leader, continuously pushing the boundaries of science and sustainability. Their “One Planet” strategy exemplifies their commitment to reducing emissions and promoting circular economy principles. From recycling processes to developing circular products, Solvay is setting new standards for environmental stewardship.

First carbon-neutral soda ash plant

For example, in a state-of-the-art facility in NEOM, Saudi Arabia, the Solvay company is building the world’s first carbon-neutral soda ash plant. This ambitious project, slated to begin operations by 2030, embodies Solvay’s vision for a sustainable future and is run by Solvay headquarters in Brussels. The plant will harness renewable energy, ensuring that the production of soda ash – a crucial component in industries like solar glass and electric vehicles – is both efficient and eco-friendly. Check the new process in the video below:

An influential company

The Solvay company’s influence extends beyond their environmental initiatives. Their advanced materials are pivotal in sectors such as healthcare, electronics, and automotive. Imagine lightweight components in electric vehicles, reducing emissions and driving the transition to sustainable transportation, all thanks to Solvay’s innovative solutions. In the realm of healthcare, Solvay’s products play a vital role in developing life-saving drugs and medical devices, underscoring their impact on human well-being.

Solvay’s journey is a testament to the power of innovation and perseverance. From the cobbled streets of Couillet in Belgium to cutting-edge facilities around the globe, their legacy is one of continuous improvement and collaboration. By fostering a culture that values diversity and teamwork, Solvay has achieved numerous breakthroughs, addressing the complex challenges of our time, from climate change to resource scarcity.

Thank you Mansur for this interesting article on the huge influence that Ernest Solvay has had on so many aspects of our current world.

Mansur is a retired physical and colloid chemist with some 30 years of industrial experience, having worked for Unilever R&D in the UK, and now acts as a consultant for chemical companies (essentially solving chemistry problems). He has a BSc degree in chemistry, two MSc’s in Nuclear Reactor Physics, and a PhD in theoretical nuclear magnetic resonance. He is a Fellow of the Royal Society of Chemistry (UK), a Chartered Chemist and a Chartered Scientist, so his full title is Mansur Sultani FRSC, CChem, CSci!

I will end with a couple of further interesting facts about Ernest Solvay.

The Solvay Refuge

In his spare time Ernest Solvay was an enthusiastic mountaineer. On the Matterhorn in Switzerland he financed the construction of a high-altitude alpine hut, the Solvay Refuge. It’s the highest mountain refuge in the Alps.

Built in 1917 at a height of 4,003 meters (13,133 ft) the Solvay Refuge was rebuilt in 1966 and is equipped with ten beds and a radiotelephone. It’s still used in emergency situations to this day.

Commemorative statue

Rather more easily accessible, as it’s at the corner of the Allée des Cinéraires and the Avenue Victoria in Brussels, is a white marble sculpture of Solvay by Égide Rombaux. Inaugurated in 1932, the work perpetuates the memory of Solvay, who is represented seated on a chair in deep thought.

Domain Solvay

I won’t leave you without somewhere to walk! The Domain Solvay in La Hulpe is a beautiful park that’s open to the public: click on the link to find a couple of walking trails. Its centerpiece is the Château de La Hulpe, which looks like it’s been airlifted in from the Loire Valley.

However, it was not, because it was built on the site by the Marquis of Bethune in 1842. At the end of the 19th century, Ernest Solvay acquired the property. In 1968 the Solvay family donated the château and park to the Belgian government.

I hope you enjoyed reading about Ernest Solvay, who is definitely a Famous Belgian! Any questions, drop me a comment below or contact me.

Denzil Walton

I created Discovering Belgium in 2011 to share the country’s hidden stories, fascinating places, and remarkable people. Through articles, photography, and audio walks, I share discoveries that reveal Belgium beyond the obvious. Hope you enjoy this site.