By Dr Sunil E Fernando

The natural rubber tree converts a greenhouse gas to a hydrocarbon. It is also capable of delivering it in commercially viable quantities almost on a daily basis, unlike any other. In addition, it retains some carbohydrates produced over a 30-year period, as medium density hardwood. This natural process of the biosynthesis of two products not only sustains the farmer, but also reduces the impact on global warming to some extent due to carbon dioxide extraction. Thus, preserving existing rubber plantations and cultivating more, especially in marginal lands, will help to mitigate an imbalance created due to the production of excessive quantities of a greenhouse gas

Benefits of Growing Rubber: Hevea brasiliensis or the rubber tree began its epic journey in 1875, when Sir Henry Wickham brought 70,000 seeds from Rio Tapajos in the upper Amazon to Kew gardens in London. Of these, 1911 seedlings were planted in Gampaha botanical gardens, Sri Lanka, initiating an agricultural revolution in South East Asia and an industrial revolution globally. Apart from giving 14 million tons of Natural Rubber (NR) consumed annually worldwide, the tree has other attributes listed below.

 Extracting 24.9 kilograms of Carbon dioxide (CO2) Greenhouse gas (GHG) to produce one Kilogram of latex

 Yielding 2.1 cubic meters/tree of wood from GHG as biomass, every 30-year cycle

 Produce easily biodegradable litter, compared to monocultures like Teak

 Require less chemical fertilisers, water and pesticides

 Retains biodiversity as a tropical plant and co-exists with other species allowing for intercropping

The uniqueness of the rubber tree is its ability to fix CO2 almost instantaneously into a hydrocarbon on a daily basis, with water and energy from sunlight while nature took millions of years converting biomass to a hydrocarbon, Petroleum. The tree is a natural solar panel trapping energy from the Sun, propagating a chemical reaction giving a hydrocarbon, while releasing Oxygen to the atmosphere and accumulating a timber resource. Tapped from year 5, the tree removes a GHG every other day, unlike any other plant species, for 11 months of the year for 25 years.

Why Excess CO2 is bad

CO2 present in the atmosphere is a double-edged sword. "CO2-Earth" reports, its concentration increased from 330 ppm in 1975 to 408.55 in September 2019, and further to 410.27 in November 2019. CO2 absorbs Infrared radiation (heat radiation) from the Sun through molecular vibrations, and emit this energy unlike gases like Nitrogen and Oxygen. Ozone, Methane and Nitrous Oxide are other GHG's, which absorb energy from the sun and similarly emit heat, warming the atmosphere.

However, GHG's maintains atmospheric temperatures without converting Earth into an ice ball. Nevertheless, high concentration of GHG in atmosphere, emit more heat to sustain global warming due to an imbalance created by excessive human activity like burning fuel, rearing of cattle/sheep, giving-off excessive CO2 and Methane, respectively. Two confirmed methods to lower ill effects of GHG are, produce less and increase plant cover.

CO2 is the raw materials for all forms of Carbohydrates, Proteins and Fats produced by plants providing for growth and energy in life forms. What is alarming is the excess CO2 produced, accumulating in the atmosphere, and in Oceans. Dissolved CO2 in seawater, raises temperature and forms Carbonic acid, increasing Ocean acidification. Ocean acidification reduces the ability of sea creatures to fix Calcium as Calcium Carbonate, another form of Carbon sink.

Carbon Dioxide Accumulation Antoine Lavoisier said, in a chemical reaction matter is neither created nor destroyed. Producing GHG through human intervention, new matter is not created but it leads to an unsustainable imbalance of matter in the environment. This is what causes the problem.

Figure 1. Figure 1. Representation of the CO2 Cycle (https://serc.carleton.edu/eslabs/carbon/2a.html)

CO2 is a GHG not only produced by burning fuels and biomass. Humans exhale One Kilogram of it daily. Increase in population does not increase CO2, as exhaled balances out by inhaling. But when human population went up from 1 billion 200 years ago to 7 billion now, increase in human activity led to an imbalance in the atmosphere and the Oceans due to release of CO2 and Methane. Biomass generation too is dwindling due to the population pressure. Thus, this imbalance of accumulating matter capable of absorbing heat is the main reason for global warming.

Biosynthesis of Natural Rubber About 2000 plant species produce NR, but Hevea brasiliensis produce commercially exploitable dispersion in water as latex. The biological reason for NR production is not clear, but it may prevent pathogenic microorganisms entering the tree. Latex is found in horizontally arranged interconnected cells called laticifer, in the bark of the tree, High yielding plantations with about 400 trees per hectare have reported a production of 2500 Kg/NR /Year. The theoretical yield potential is estimated at, 7,000 to 10,000 kg/Ha/Year. A tree giving 15 to 30g of rubber per day, tapping on alternative days yields 2.2-4.5 Kg of NR per year. According to Apollo Vredestein R and D, on average 1.9 Kg of NR goes into a tire and a tree produces enough rubber to make 2 tires per year or 50 in lifetime.

Plants take in CO2 for survival. Some converts part into an edible form, as carbohydrate and fats while the rest is converted to forms like cellulose. These may end up as wood, becoming a Carbon sink for a length of time. In rubber trees, the process extends converting part of CO2 to a rubber hydrocarbon containing Carbon and Hydrogen, more akin to Petroleum. This wonder tree makes a hydrocarbon in few minutes, while nature took millions of years to convert biomass derived from CO2 to Petroleum.

The biosynthetic pathway for NR in Hevea begins with the monomer precursor, Isopentenyl pyrophosphate (IPP). IPP is an adduct of Pyrophosphoric acid and Isoprene monomer. However, IPP is not an uncommon material, limited to Hevea, but is formed from carbohydrates, in other plants, algae, bacteria, in mammals and humans. The formation of IPP is said to occur by following two pathways; Mevalonate (MVA) or non-mevalonate (non-MVA), deoxy-xylulose pathway. In rubber trees, breakdown products from carbohydrates like Pyruvates and Glyceraldehydes are transformed into IPP, in Cytosol in Cytoplasm/Plastids in plant cells, in several stages in the presence of many enzymes like mevalonate kinase (MVK) and mevalonate diphosphate decarboxylase (MVD). Figure 2.

Figure 2 Representation of the Formation of IPP through MVA and Non-MVA Pathways (Chiang. C. C. K, 2013, PhD Thesis, the Graduate Faculty of the University of Akron).

On isomerisation with enzyme, Isomerase IPP is converted to Dimethyl allyl pyrophosphate (DMPP). IPP and DMPP are building blocks for diverse groups of bio-molecules like Cholesterol, Vitamin K, Coenzyme Q10 (CoQ10) and Cis-polyisoprene (NR). Figure 3

Figure 3 Pathway to NR Biosynthesis

In rubber producing Russian dandelion (Taraxacum koksaghyz Rodin), enzyme transformation of sugars enrich NR formation. In the summer months, dandelions produce excess sugars and store it as Inulin. The possibility of metabolic engineering assisted enzyme degradation of Inulin to enhance production of IPP and then to NR has been explored for dandelion. Meanwhile Researchers have succeeded in decoding the Genome sequence in Hevea. This can lead to high yielding rubber clones, by locating genes responsible for biosynthesis of rubber.

Latex with 30% NR and 5% non-rubbers is produced in special cells called laticifers located horizontally and a lateral cut of the bark exposes most number, giving latex. Since the laticifer density is genotype dependant determining latex yield, it can give the direction for biologists as a selection marker for high yielding clones. In older rubber trees chemicals inducing Ethylene formation in the bark-tissue or generated it in situ like 2-Chloroethylphosphonic acid, are used as yield stimulants. Such developments, together with appropriate nutrition infusion, can increase NR yields, making rubber cultivation attractive to farmers.

Chloroethylphosphonic acid

Hevea brasiliensis is a dual-purpose tree, making Carbon sinks from CO2 in two ways, as a hydrocarbon and as wood, extracted in a 30-year cycle. Plants like wheat and rice also fix CO2 to give edible Carbohydrates, often twice a year. Nevertheless, human/animal consumption of edible carbohydrates quickly gives CO2 back to the environment. Thus with respect to environmental benefits, producing NR by growing rubber trees is a more favourable option. Fortunately, rubber cultivation has increased from 9.9 in 1975 to 14.0 million hectares in 2018 giving these benefits worldwide.

Preserving and enhancing rubber cultivation

The rubber farmer does a silent service by extracting latex and thus removing substantial quantity of GHG on a daily basis. As NR based products stay longer in service, Carbon in it remains intact for a longer period without burdening the environment. Each tree has the uncanny ability to function as a tap, working 150 days a year to clean up the environment unlike other plant-based options. It leaves a raw material as timber derived from GHG, extracted in every 30-year cycle giving 50 Kg of wood/tree. The global potential for wood at a replanting rate of 3% of acreage annually is, approx 7.30 Mn Tons/ year.

The environmental benefits can be maximised if the farmer taps the tree every other day for 11 months of the year if their livelihood is secularly safeguarded. Going into alternatives for from existing land is counterproductive to the environment. The negative process will occur only if the farmer finds the daily sustenance by growing rubber becomes a hard task. To encourage the farmer, requires a collective and a concerted effort from:

 Buyers giving stable/reasonable price

 Biologists developing fast growing, high yielding, drought and disease resistant trees

 Cultivation experts developing new and less-laborious extraction techniques and attractive intercropping practices

 Technologists adding value to existing NR products and developing new products

• Chemists by modification to give new elastomeric materials from NR as raw materials for other processes

• Environmentalists by increasing international awareness of the benefits of growing rubber

With respect to increased appreciation of the capability of modified NR forms, an enterprising tire manufacturer uses Epoxidised NR/Silica combination in automobile tire treads, to give higher wet grip and low rolling resistance tires. Such greener tires used in hybrid and electric cars, made these vehicles more environmental friendly. Olefinic elastomers like NR, contains reactive double bonds with potential to be modified as raw materials in many applications. Table 1, Figures 4 and 5. Such developments will give impetus to the sustainability and growth of an industry, benefitting the rubber farmer while fixing more GHG as well.

 

 

 

 

 

 

 

 

 

 

ENDS

References:

1. Bhowmik. I (2006), Tripura Rubber Mission Technical Bulletin 2. https://www.co2.earth/

3. Rao. P. S, et.al (1998), Agricultural and Forest Meteorology 3, 90

4. Chiang. C. C. K (2013), Natural rubber biosynthesis, PhD Thesis, The Graduate Faculty of The University of Akron, USA 5. Decoding the rubber tree genome, https://www.sciencedaily.com/releases/2016/06/160624100225.htm

 

 

Dr Sunil E Fernando is Former Executive Director, DPL Group, Sri Lanka, Managing Director Dipped Products (Thailand) Limited, Former Director, DPL Plantations and Kelani Valley Plantations Limited, Sri Lanka, and a Consultant - Latex Products

Birla Carbon is set to participate in the upcoming Tire Technology Expo 2026, scheduled to take place in Hannover, Germany, from 3 to 5 March 2026. Attendees can find the company at Stand C 224, where it will present its latest innovations in carbon black and sustainable materials. The focus will be on solutions specifically designed to meet the evolving demands of the tyre industry, particularly in enhancing performance while aligning with broader environmental objectives.

The exhibition will serve as a platform to demonstrate how Birla Carbon’s advanced materials contribute to greater tyre durability and fuel efficiency. These developments are especially pertinent for next-generation mobility, including the specific requirements of electric vehicles. The company aims to show tire manufacturers how performance enhancements can be achieved without sacrificing sustainability commitments.

A key theme of their presence will be the strength and agility of their supply network across the EMEA region. By emphasising its robust local manufacturing and distribution framework, Birla Carbon intends to highlight its role as a dependable innovation partner. This infrastructure is built to ensure consistent quality and supply chain resilience, allowing for effective collaboration even in fluctuating market conditions.

Sustainability will be woven throughout the company’s engagement at the expo. Birla Carbon plans to detail its journey towards achieving net zero carbon emissions, spotlighting advancements like its Continua Sustainable Carbonaceous Material (SCM). The widespread ISCC Plus certification across its global manufacturing sites will also be featured, underscoring its commitment to traceable and responsible sourcing practices throughout the value chain.

John Davidson, Chief Sales, Marketing & Sustainability Officer, Birla Carbon, said, “Birla Carbon brings a range of innovative carbon black solutions, backed by its decades of manufacturing leadership, at a time when the industry is focused on maximising tyre performance across diverse mobility requirements. As mobility evolves towards electric and more energy-efficient platforms, carbon black is increasingly becoming a key performance enabler, directly influencing durability, rolling resistance and lifecycle emissions. Tire Technology Expo provides an impactful global platform to demonstrate how our advanced carbon material solutions are engineered for modern mobility and sustainability.”

Sri Trang Agro-Industry Public Company Limited (STA) is advancing Thailand’s agricultural digital transformation through its homegrown platform, the Sri Trang Friends application. Launched in 2019 with the vision of providing a comprehensive digital tool for rubber farmers, the platform has since evolved to serve a broader agricultural community, including palm growers. It is designed to streamline access to information, services and various support mechanisms, creating a direct link between the company, farmers and supply chain participants.

A key recent development is the introduction of the Friends Shop feature and the Friends Point rewards system. This enhancement integrates local merchants from communities nationwide into the application, allowing farmers to conduct convenient transactions while helping to lower their daily expenses. The points accumulated can be used as cash equivalents or exchanged for a wide range of benefits, including essential goods and services, thereby stimulating local economic activity. The platform’s utility has also been extended to Sri Trang Group employees and the general public, who can now earn and redeem points for discounts or payments at participating outlets such as supermarkets, fuel stations and coffee shops. This expansion ensures the app delivers practical, lifestyle-oriented advantages to a wider user base.

According to Executive Director Vitchaphol Sincharoenkul, the application was originally conceived under the concept of ‘One App, Complete Services for Rubber Farmers’ to strengthen farmer engagement, improve coordination efficiency and ensure fully traceable and transparent produce trading. Beyond these operational goals, it also opens new marketing channels for local communities and fosters deeper collaboration across the agricultural value chain. The company is actively broadening its network of partners to diversify the benefits and merchant options available to users.

Currently, the Sri Trang Friends platform has attracted over 150,000 registered users, with more than 40 community merchants across various regions either already onboard or preparing to join. This growth underscores the company’s commitment to leveraging a Thai-developed digital solution to empower modern farmers, reinforce local economies and drive sustainable long-term progress within the nation’s agricultural sector.

Himadri Speciality Chemical Ltd (HSCL) has officially launched commercial production at its new 70,000 metric tonne per annum speciality carbon black line in Mahistikry, West Bengal. This brownfield expansion elevates the company’s total carbon black manufacturing capacity to 250,000 MTPA, with 130,000 MTPA specifically dedicated to speciality grades at this single location. As a result, the Mahistikry facility now holds the distinction of being the largest site in the world for speciality carbon black production.

The development represents a pivotal achievement in the company’s strategic roadmap, solidifying its global standing in the advanced materials sector. By significantly increasing its speciality portfolio, the company is better positioned to meet the rigorous demands of high-value industries such as plastics, inks, paints and coatings. The project integrates cutting-edge process technology with stringent quality controls and energy-efficient systems, ensuring that premium-grade products are consistently delivered to an international client base.

Financially, the new capacity is set to positively influence revenue streams and bolster margins over the coming years. The expanded scale not only enhances operational efficiency and supply chain dependability but also accelerates the company’s ability to innovate and respond to market shifts. As worldwide demand increasingly favours tailored, high-performance carbon solutions, this enhanced infrastructure provides a distinct competitive edge through improved agility and product development capabilities.

Anurag Choudhary, CMD & CEO, Himadri Speciality Chemical Ltd, said, “The commencement of commercial operations of our 70,000 MTPA Speciality Carbon Black line at Mahistikry marks the beginning of the next phase of growth in our advanced carbon materials journey. With this expansion, Mahistikry becomes the world’s largest single-location Speciality Carbon Black facility, with a capacity of 130,000 MTPA. This milestone significantly enhances our production capabilities and positions us strongly to capture rising global demand in premium, application-specific segments such as plastics, inks, paints, coatings and other specialised industries. We remain committed to disciplined expansion, operational excellence, sustainability and delivering high-performance solutions that create long-term value for all stakeholders.”

Solvay has announced that it will optimise the soda ash production capacity at its Torrelavega site in Spain from 600 kilotonnes to 420 kilotonnes, effective from the third quarter of 2026 and pending the required consultation process. This decision is a direct response to ongoing global oversupply and persistently high energy and carbon costs in Europe.

By optimising its operational level, the company aims to strengthen the long-term competitiveness and sustainability of its remaining production at the facility. The Torrelavega site will continue to serve regional customers by focusing on soda ash and premium sodium bicarbonate, with supply guaranteed through both local operations and Solvay’s global network. Importantly, sodium bicarbonate production will remain unaffected.

This adjustment also supports the company’s commitment to the energy transition, including a major biomass initiative designed to significantly reduce coal usage at the site. As a result of the capacity reduction, a net decrease of up to 77 positions is expected. Solvay is committed to managing this transition responsibly and will engage closely with employee representatives to develop socially supportive solutions and measures for those impacted.

Etienne Galan, President of Solvay Soda Ash & Derivatives, said, “Solvay is taking decisive steps to enhance the competitiveness and sustainability of its soda ash operations. Soda ash is critical for essential applications, and Solvay remains firmly committed to the business. We are strategically investing now to cement our competitiveness for decades to come, including the deployment of carbon neutral soda ash processes as part of our energy transition roadmap. At the same time, we urgently need the regulatory framework to align with our industrial reality and the investments that are needed for this transformation.”