The global sustainability transformation agenda is a call to action for nations, organisations and individuals to work together to address pressing environmental, social and economic challenges facing the world today. The agenda is framed around several key themes, including.

  • Climate change (Reducing greenhouse gas emissions)
  • Biodiversity loss
  • Sustainable use of natural resources (Including fresh water, land, forests & oceans)
  • Responsible production (Patterns that minimise waste and promote resource efficiency)

The agenda requires a collective effort from all stakeholders, including governments, the private sector, civil society organisations and individuals. By working together, we can create a more sustainable, equitable and prosperous future for all.

The chemical industry has the potential to be a solution provider for sustainability by developing and producing materials and products that are environment-friendly, energy-efficient, and non-toxic. Some examples include providing chemicals and materials for energy transition including hydrogen economy, solar panels, electric energy storage, developing biodegradable plastics, and creating more efficient and less harmful green chemistries.

However, it's important to note that the chemical industry also has a significant environmental impact, and it is essential to ensure that sustainability measures are prioritised and implemented throughout the industry's operations. It generates ~US$ 4.7 trillion in revenues and employs over 15 million people. Globally, the industry emits > 2.3 Giga Tonnes of CO2 (~4% of the global emission) and is considered a ‘hard-to-abate’ industrial sector. The products from the chemical industry are used in > 90% of manufactured goods. Therefore, unless the chemical system transitions to a sustainable model of operation, it makes it challenging for other parts of the global economy using chemical products to be truly sustainable.

As an organisation with a mission of Serving Society Through Science, Tata Chemicals is committed to contribute and collaborate to support the sustainability transformation agenda. It is continually embedding sustainability in its current business and is proactively working with its supply chain partners and customers to achieve their sustainability goals.

The sustainability scope at Tata Chemicals encompasses reduction of the environmental impact of manufacturing and other business operations (led by Soda Ash) while maintaining the economic viability of its products.

A. Climate Change Action / Decarbonisation

Energy

Renewable Power

In the chemicals manufacturing process, majority of the electricity consumption takes place in motors, pumps, as well as heating, cooling and control systems. Tata Chemicals' total electricity consumption is 547 GJ.

  • The Company has drafted detailed plans to more than double renewable electricity in next 5 years
Thermal Energy (Fuel Switch)

Majority of the thermal energy is used in the form of steam (>80%). While there are techno commercial challenges in transitioning to carbon-neutral thermal energy, Tata Chemicals has identified low carbon / zero carbon fuel switch options to accelerate the pace of sustainable growth.

  • Mithapur Salt Works produces ~2.7 million MT of salt. By using solar energy, it is avoiding ~33.5 million MT of CO2 emission to environment
  • Tata Chemicals UK has signed an offtake agreement with Vertex Hydrogen for 200 MW+ of Hydrogen supply
Energy Efficiency

It is estimated that 10% to 15% carbon reduction can be achieved with various energy efficiency solutions across both electrical and thermal energy.

  • The next phase of capacity expansion in India and USA will be more energy efficient processes, i.e. Dry Lime Process and Solution Mining, respectively
  • Energy efficiency solutions such as waste heat recovery, implementation of energy efficient equipment and motors, and digital interventions like automation & IIoT are being implemented across all manufacturing facilities

Carbon Capture & Utilisation

Tata Chemicals' Carbon Capture Unit (CCU) in UK is now fully operational, with an annual capacity of 40,000 MT. The CCU unit services 100% CO2 requirement for sodium bicarbonate and sells surplus quantities in open market.

Supply Chain & Logistics

Tata Chemicals has a unique position in the Soda Ash value chain, having manufacturing and supply chain networks across four continents. This provides it with the ability to serve its global customers most economically, with the most optimum environment footprint.

  • Tata Chemicals is transitioning from small bags to bulk supplies thus reducing plastic consumption
  • It is focussed on reducing the share of road transportation that has high carbon footprint and safety incidences. ~75% of Tata Chemicals' primary shipment is through railways, which it plans to further increase in order to reduce its Scope 3 emissions
B. Water Conservation

Both synthetic and natural Soda Ash processes are water intensive.

  • Tata Chemicals is one of the pioneers in conserving water in Soda Ash and other manufacturing processes. Its main manufacturing complex in Mithapur is already net freshwater neutral
C. Circular Economy

Circularity is one of the core principles of green chemistry. In addition to renewable energy, Tata Chemicals also focusses on recycling waste and by-products to harness sustainable chemistry for propelling green growth.

  • Tata Chemicals’ cement plant at Mithapur is an example of the Company’s growing thrust on circularity. It consumes 100% fly ash generated during burning of fuel. It recycles 100% of off spec / rejected Calcium Carbonate generated at the lime kiln. It also uses Calcium Chloride in the effluent stream as a feedstock for cement manufacturing

Even though it is a part of the problem, the Chemicals Industry is, notably, also a significant solutions provider, contributing to the development of a sustainable global ecosystem. The global transition to a circular and net-zero-emissions economy is an opportunity for the chemicals system to grow its annual production volumes 2.5 times and create 11 million new jobs globally by 2050.

Tata Chemicals' core portfolio comprises Soda Ash, Salt and Bicarb, with adjacent products of Silica, Bromine and Chlorine derivatives. While the conventional application of these products has a stable outlook, growth is mainly driven by new applications linked to sustainability drivers. The Company aims to build leadership in these new applications by substantially investing in these products.

Soda Ash

Tata Chemicals is the third largest producer of Soda Ash globally with installed capacities of 4.36 million MT. While, overall, long-term growth (CAGR) is projected at ~3% globally and ~6% in India, new application segments fuelling faster growth are Solar Glass and Lithium Carbonate, in addition to conventional applications.

  • Global solar power capacities are estimated to grow at ~250 GW for the next 5 years, translating into ~1 - 1.5 million MT consumption of Soda Ash annually on account of Solar Glass alone. Additionally, glass is also increasingly being used in construction to ensure better energy management
  • Driven by sustainable mobility, EV batteries are estimated to grow > 20% over the next 5 to 7 years. Soda Ash is used to manufacture Lithium Carbonate, a key active material used in the manufacturing of EV batteries
  • Share of newer sustainable application segments* of Soda Ash will increase from ~11% in 2022 to > 20% by 2030
  • The current global capacities of Soda Ash (~65 million MT) will not be adequate to service the growing demand driven by sustainable applications and will need to add incremental capacity of ~16 million MT by 2030
  • Tata Chemicals plans to double its Soda Ash capacities in a phased manner to service growing demand
Bicarb

Sodium Bicarbonate is projected to grow at ~3% globally and ~7% in India over the next five years. Tata Chemicals’ Carbon Capture unit is able to generate Pure Carbon Dioxide (~99.99% purity), enabling it to directly produce high grade carbon neutral Sodium Bicarbonate. Conventional applications of Sodium Bicarbonate include food, feed and pharmaceuticals, while its new sustainable applications include:

  • Industrial flue gas treatment to reduce emissions. This segment is estimated to grow by ~4% globally and ~10% in India
  • Applications in cattle and poultry feed to increase productivity. In addition, it also helps in reducing methane emissions in cattle
  • Tata Chemicals plans to increase its Bicarb capacities by 2.5x in next 5 to 7 years

*Sustainable Application Segments include – Solar Glass, Lithium Carbonate, Sodium Bicarbonate

Salt

In addition to being a key food ingredient, Salt is a versatile starting material for industrial chemicals. It is a key feedstock for synthetic Soda Ash, Caustic Soda and Chlorine Derivatives.

  • While Solar Salt is considered carbon neutral, its productivity, over the past decade, has been impacted due to changes in the rainfall patterns and temperatures, in India and globally
  • Tata Chemicals is committed to increase its Solar Salt capacities to support the capacity expansion of Soda Ash and Edible Salt
  • Tata Chemicals plans to increase its Edible Salt capacities by 1.5x in next 5 to 7 years
Silica

Silica is a versatile product used as an ingredient and intermediate in industrial, food, pharmaceutical and personal care applications. While the overall category is projected to grow at ~5% globally, its specialty variant, Highly Dispersible Silica (HDS), is projected to grow at >10%.

  • HDS in increasingly being used in automotive tyres for green labelling. It is known to improve safety and performance of automotive tyres and increase fuel efficiency by ~7%
  • Tata Chemicals is investing in sustainable green chemistry for producing HDS from a renewable feedstock, Rice Husk. India has the potential to become a global supplier of HDS produced from Rice Husk
  • Tata Chemicals plans to increase HDS capacities by 50 KT in next 3 to 4 years
Fermentation Platform

In line with its green growth agenda, Tata Chemicals is exploring and investing in tomorrow’s technologies aligned to the principles of green chemistry, i.e. renewable feedstock, sustainable green chemistries and eco-friendly applications.

  • It has already begun its green chemistry journey by investing in the Fermentation Platform. Its current product, Fructooligosaccharide, is increasingly being used as a prebiotic and alternative sweetener
  • The Fermentation Platform also has the potential to produce industrial materials and nutraceutical products, replacing conventional unsustainable and non-renewable products
Collaboration with Customers & Supply Chain Partners

Tata Chemicals is proactively engaging with customers, suppliers, academia and other supply chain partners to ensure inclusive transition to a greener tomorrow.

  • Product & Process Innovation – investment in new technologies and processes along with academia, based on the principles of green chemistries. (Refer to Innovating for Green Chemistry, Click Here)
  • Customer Collaboration – process modifications and technology exchange for new products and processes, based on the life cycle assessment of the products
  • Supply Chain Solutions – sharing of best practices with suppliers and logistics partners to transit to low carbon sustainable value chain

Location: Mithapur Plant

Picture Credit: Chirag R. Parmar