China Takes Action

China is a big producer of pigments and coatings, but is not a strong producer in terms of environmental friendliness. The country is far behind in waterborne technology, and in most industries, VOCs are directly emitted into the atmosphere. In recent years, however, China has attached great importance to environmental policies and has developed measures for a low-carbon environment. Xu Shufan, Vice Inspector of Science and Technology Division of the Ministry of Environmental Protection in China, spoke about the country’s plans to reduce CO₂ emissions per unit of GDP by 17% in the next five years. China has also adopted a series of energy conservation measures to change the present energy structure, which is based on burning coal. The country is also interested in renewable materials. In September of this year, China hosted the Green Industrial Coating Asia conference, where bio-based coatings were a highlight. During the conference it was noted that in early 2013, the China State Council put forward a blueprint for “Planning for Biotech Development,” showing that developing a bio-based industry is now a national strategy for China.

According to Joerg Hellwig, Head of the LANXESS Inorganic Pigments business unit, “China will remain a strong driver for global pigment demand. In particular, environmentally friendly products are expected to outperform the market, due to growing awareness of the eco-compatibility and increasing requirements for high-quality products. This applies not only to the products but even more to the method of manufacturing them.”

More-Sustainable Manufacturing

The chemical industry plays a major role in the quest for sustainability, as technology advancement and manufacturing process optimization can bring huge benefits, not only economically, but also ecologically. During his presentation, Ming C. Chien, CEO of LANXESS Greater China, noted that the company has set a goal to reduce specific CO₂ emissions and energy consumption by 10% in each business segment, as well as reduce VOC emissions by 30% by 2015. At the symposium, company technical experts introduced a major step forward in Penniman Red production technology with a new optimized Penniman process that ensures high environmental compatibility by optimizing water treatment and waste gas cleaning.

In the traditional Penniman process, a range of very attractive bright red pigments are available, but it is challenging due to environmental issues. The process requires large amounts of energy, particularly during the Penniman growth reaction. The waste gases from the process contain significant amounts of nitric oxides, which are toxic, climate-damaging substances. In addition, the wastewater of the process contains harmful ammonium nitrate, which when discharged into rivers and lakes, leads to eutrophication, causing fish mortality and a reduced drinking water supply.

LANXESS has developed a new, innovative process that leads to a significant reduction of the environmental impact. The new process is extremely energy efficient compared to the known Penniman Red process through innovative technical solutions. In addition, the new optimized process conditions lead to significantly lower emissions of ammonium nitrate in the wastewater and nitric oxides in the waste gases. These very positive results have been achieved by optimizing the process parameters of the different process steps and the implementation of innovative wastewater and waste gas treatment technology. In total, the LANXESS technology is a new benchmark for the sustainable production of Penniman Red pigments.

In addition, due to a well-controlled pigment growing process, the company is able to produce many different color shades and offer brighter red pigments, thus enabling LANXESS to expand its existing Bayferrox series.

With an investment of 500 million RMB, LANXESS is building a new facility for these premium iron oxide red pigments in Ningbo, China, using the company’s new Penniman process. The facility (shown above) is initially designed for a capacity of 25,000 metric tons and will create 150 new jobs. Construction began in mid-2013. “With this plant we will be the first inorganic pigments manufacturer that is able to produce these yellow shade red pigments in an environmentally friendly and consistent way,” said Wolfgang Oehlert, Head of Technical Operations at LANXESS Inorganic Pigments. 

Sustainability=Business

As a supplier, LANXESS has taken a leading role in our industry’s journey to sustainability. This is something that is appreciated by coatings manufacturers, especially companies like AkzoNobel, which spends two thirds of the money it allots for innovation on sustainable development. Paul Sasada, Spend Area Director Colored Pigment and Colorants at AkzoNobel, noted that Akzo’s philosophy is that sustainability is business, and business is sustainability. Though our finite amount of raw materials may someday disappear, we all still want to have a business and to produce something, and this will only be possible through sustainable development. Sasada noted that the environmental impact of products does take part in the decision to purchase products, as does the attitude of suppliers toward sustainability. It is important to AkzoNobel that a company seeks sustainable development from a true desire for proactive improvement rather than from pressure to comply legally.

All those who attended this symposium walked away with a new appreciation of the importance of sustainability not only in our industry, but throughout all industries. As I noted in my presentation, it is one of the greatest challenges of our century.