{"id":129563,"date":"2023-07-26T07:14:00","date_gmt":"2023-07-26T05:14:00","guid":{"rendered":"https:\/\/renewable-carbon.eu\/news\/?p=129563"},"modified":"2023-07-20T11:40:12","modified_gmt":"2023-07-20T09:40:12","slug":"to-achieve-climate-neutrality-in-the-chemical-industry-we-must-also-cut-demand","status":"publish","type":"post","link":"https:\/\/renewable-carbon.eu\/news\/to-achieve-climate-neutrality-in-the-chemical-industry-we-must-also-cut-demand\/","title":{"rendered":"To achieve climate neutrality in the chemical industry, we must also cut demand"},"content":{"rendered":"\n\n\n

Chemical products, such as plastics, fertilisers and solvents pervade our modern lifestyle. The vast majority are derived from crude oil or natural gas \u2013 and producing them generates around 5 percent of global CO2<\/sub>\u00a0emissions. To transition the\u00a0chemical industry toward\u00a0<\/em>sustainable production in a net-\u200bzero society, we essentially have the following options: We can replace fossil feedstocks with biomass, waste or CO2<\/sub>\u00a0captured from industrial emissions or the atmosphere; or we can continue with the current industry and permanently store industrial waste gases underground.1<\/sup>\u00a0All are valid approaches; the preferred solution at regional level will depend on land and water reserves, renewable power sources and carbon storage options available locally.<\/strong><\/p>\n\n\n\n

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Dr. Paolo Gabrielli \u00a9<\/strong> ETH Z\u00fcrich<\/figcaption><\/figure><\/div>\n\n\n\n

‘In many regions of the world, achieving a net-\u200bzero chemical industry without a circular economy and interventions on the demand side will be difficult, or even impossible.’<\/p>Paolo Gabrielli<\/cite><\/blockquote>\n\n\n\n

However, in many areas of the world, and when it comes to certain chemical goods, technological change in production won\u2019t be enough to achieve net-\u200bzero targets.2<\/sup>\u00a0We must also strive for a circular economy \u2013 which means designing products that are long-\u200blasting and recyclable. And we need to combine industrial transformation with measures to reduce demand for chemical products.3<\/sup><\/p>\n\n\n\n

Changing our perception<\/strong><\/h3>\n\n\n\n

Let\u2019s look at plastics for instance. At present, only about 15 percent of plastic waste is collected for recycling, and of that, 40 percent is discarded from the recycling process \u2013 either because that type of plastic can\u2019t be recycled or on account of low quality.4<\/sup>\u00a0Colleagues at ETH Zurich have calculated that it would take a recycling rate of over 75 percent in order to manage plastics sustainably and within planetary boundaries in 2030.5<\/sup>\u00a0So we urgently need better collection and recycling processes.<\/p>\n\n\n\n

Their calculations also show that a circular economy with maximum recycling rates simply won\u2019t cover the surge in demand for plastic products that is forecasted through to 2050. We\u2019ll make no headway in this area unless we can bring demand below the predicted levels. One approach is to use fewer plastic products and use them for longer. Today, plastic items and many other chemically manufactured products are seen as cheap, mass-\u200bproduced, disposable goods; this perception needs to change.<\/p>\n\n\n\n

The same goes for fertilisers. In a recent study, we showed how nitrogen fertilisers could be produced without carbon emissions. But again, rather than focusing solely on production, it\u2019s important to tackle the demand side. Key measures here include ensuring farmers use nitrogen more efficiently when fertilising, for example through precision agriculture, cutting food loss, and promoting a diet with fewer meat and dairy products \u2013 as animal-\u200bbased foods are more resource-\u200bintensive to produce.6<\/sup><\/p>\n\n\n\n

Shifting economic power<\/strong><\/h3>\n\n\n\n

In many regions of the world, and for a number of reasons, achieving a net-\u200bzero chemical industry without a circular economy and interventions on the demand side will be difficult, or even impossible. Our new study shows why.2<\/sup> In most European countries, land resources are limited, and this restricts the production of biomass as a feedstock. In the Middle East and North Africa, scarcity of water makes it difficult to grow biomass and produce hydrogen, which is needed if CO2<\/sub>is to replace fossil hydrocarbons as feedstock and serve as a raw material for the chemical industry. The same applies to other large producers like China and India.<\/p>\n\n\n\n

Consequently, transitioning the chemical industry to net-\u200bzero might entail a restructuring of the international trade in chemicals. Today, with oil and gas as key feedstocks for chemical production, countries with fossil raw materials play a central role. In the future, production might shift to regions with abundant land and water resources, for example in North and South America. In countries like the United States, Canada, Chile or Brazil, biomass can be grown on arable land for industrial use without endangering the food supply; in addition, water and land resources are available to produce renewable electricity and hydrogen.<\/p>\n\n\n\n

However, all countries have the chance to reduce their dependence on chemical imports and to strengthen security of supply if they focus on a circular economy and demand-\u200bside measures.<\/p>\n\n\n\n

References<\/h3>\n\n\n\n

1<\/sup> Gabrielli P, Gazzani M, Mazzotti M: The Role of Carbon Capture and Utilization, Carbon Capture and Storage, and Biomass to Enable a Net-\u200bZero-CO 2 Emissions Chemical Industry. Industrial & Engineering Chemistry Research 2020. 59: 7033, doi: external page10.1021\/acs.iecr.9b06579call_made<\/a><\/p>\n\n\n\n

2<\/sup> Gabrielli P, Rosa L, Gazzani M, Meys R, Bardow A, Mazzotti M, Sansavini G: Net-\u200bzero emissions chemical industry in a world of limited resources. One Earth 2023, 6, doi: external page10.1016\/j.oneear.2023.05.006call_made<\/a><\/p>\n\n\n\n

3<\/sup> Meng F et al.: Planet-\u200bcompatible pathways for transitioning the chemical industry. PNAS 2023. 120, doi: external page10.1073\/pnas.2218294120call_made<\/a><\/p>\n\n\n\n

4<\/sup> Syberg K: Beware the false hope of recycling. Nature 2022. 611: S6, doi: external page10.1038\/d41586-\u200b022-03645-0call_made<\/a><\/p>\n\n\n\n

5<\/sup> Bachmann M, Zibunas C, Hartmann J, Tulus V, Suh S, Guill\u00e9n-\u200bGos\u00e1lbez G, Bardow A: Towards circular plastics within planetary boundaries. Nature Sustainability 2023, doi: external page10.1038\/s41893-\u200b022-01054-9call_made<\/a><\/p>\n\n\n\n

6<\/sup>\u00a0Rosa L, Gabrielli P: Energy and food security implications of transitioning synthetic nitrogen fertilizers to net-\u200bzero emissions. Environmental Research Letters 2023, 18: 014008, doi:\u00a0external page10.1088\/1748-\u200b9326\/aca815call_made<\/a><\/p>\n\n\n\n

About the author<\/strong><\/h3>\n\n\n\n

Paolo Gabrielli is a senior researcher at the Chair of Reliability and Risk Engineering at ETH Zurich.<\/p>\n\n\n\n