Against the backdrop of the continuous advancement of China’s dual-carbon strategy and tightening global carbon control regulations, the precipitated silica industry is phasing out high-energy-consuming traditional production lines. Various new low-carbon and low-emission preparation technologies are gradually moving toward industrial application. Green manufacturing capacity has become a key competitive advantage for powder enterprises participating in domestic and overseas markets. Traditional precipitated silica production consumes large amounts of water and energy and generates substantial wastewater, leading to persistently high environmental treatment costs. As domestic environmental supervision becomes stricter, the pressure to renovate outdated production lines keeps rising, forcing enterprises in the industry to explore cleaner production routes. In the past stage of industrial expansion, enterprises focused heavily on capacity growth while setting relatively loose standards for energy consumption, water resource utilization and pollutant discharge. Many small and medium-sized precipitated silica plants suffered from low water reuse rates and lack of waste heat recovery. The disposal costs for wastewater and solid waste generated during production have climbed year by year. With routine environmental inspections, some old facilities are already facing production restrictions or shutdown risks, making industrial transformation urgent.

　　Currently, low-carbon routes in the industry mainly fall into two categories: resource utilization of solid waste and transformation of continuous synthesis processes. Using silicon-containing solid waste such as rice husk ash and industrial by-product silicon slag to produce precipitated silica enables waste recycling, reduces consumption of raw mineral materials and cuts carbon emissions. This technology turns agricultural and industrial residues into valuable resources, easing the environmental burden caused by solid waste landfilling and lowering raw material procurement costs. The continuous synthesis process upgrades the traditional batch precipitation method by optimizing the whole workflow of reaction, filtration and drying, improving heat recovery efficiency and reducing water consumption. It stabilizes product quality while cutting energy consumption per unit of product. Many enterprises have also built reclaimed water reuse systems, which purify production wastewater for reuse in manufacturing. This greatly reduces the intake of fresh water, further lessens the environmental load of production and curbs pollutant discharge at the source.

　　Changing procurement preferences of downstream customers further drive precipitated silica enterprises to build low-carbon production lines. Leading clients in tire, new energy material and high-end coating sectors have incorporated carbon footprint, green factory qualifications and pollutant emission indicators into supplier evaluation systems. Multinational enterprises prioritize powder suppliers that can provide complete carbon footprint reports in supply chain bidding. Precipitated silica enterprises with low-carbon production lines gain an edge in bidding for high-end orders. The green label is no longer merely a marketing selling point, but a basic threshold for entering high-end supply chains. Especially for export business, the implementation of carbon border adjustment mechanisms and other trade rules means the full-life-cycle carbon emission data of exported products is under strict review by overseas buyers. Enterprises without low-carbon production systems and unable to issue carbon footprint certificates will gradually lose access to overseas markets.

　　Nevertheless, the promotion of low-carbon technologies still faces practical challenges. The fluctuating composition of solid waste raw materials directly affects key indicators of finished precipitated silica including particle size and specific surface area, placing high requirements on pre-treatment of raw materials and real-time production control. Rice husk ash and silicon slag from different origins and batches vary greatly in silicon content and impurity levels. Poor control of pre-treatment processes easily leads to fluctuations in finished product indicators, making it hard to meet the demand of stable supply for high-end customers. Continuous production equipment requires massive upfront investment, bringing heavy financial pressure on small and medium manufacturers. The process commissioning cycle is long, and stable mass production cannot be achieved in a short period. In addition, the carbon footprint accounting system in China’s powder industry has not been fully unified, with discrepancies in calculation results from different institutions. The certification and filing procedures of corporate carbon data still need improvement, and the shortage of carbon management professionals also restricts small and medium enterprises from carrying out carbon audits.

　　Many leading enterprises choose to push forward green transformation step by step. On one hand, they carry out energy-saving renovation on existing precipitated silica production lines to recover waste heat and recycle process water, lowering energy consumption and emissions of current facilities. On the other hand, new projects directly adopt low-carbon technologies to build green precipitated silica capacity, and set up carbon footprint monitoring systems to record full-life-cycle carbon emissions of products. The combination of old and new capacity balances short-term production costs and long-term green development needs, and gradually completes product upgrading. Some leading enterprises have set up special R&D centers to continuously optimize core technologies including solid waste purification and continuous synthesis. They keep narrowing the performance gap between products made by low-carbon processes and those from traditional routes, so that low-carbon precipitated silica can be directly applied in high-demand scenarios such as tires and lithium battery separators, breaking the inherent limitation that low-carbon products deliver inferior performance.

　　Industry analysts predict that in the coming years, green low-carbon concepts will run through the whole chain of precipitated silica industry including capacity construction, product sales and export trade. Outdated high-energy and high-emission capacity will keep being squeezed out of the market, and industrial resources will concentrate on enterprises equipped with green technologies and sound carbon management systems. The mature application of low-carbon processes will not only reduce the environmental burden of precipitated silica production, but also help domestic precipitated silica cope with overseas carbon tariff barriers and pave the way for domestic powder materials to enter global high-end markets. Future market competition will no longer focus solely on product price and basic indicators. Green manufacturing, carbon management capability and clean production level will become core competitiveness of enterprises, steadily promoting the whole precipitated silica powder industry toward low-carbon, resource-based and high-quality development.