Displaying items by tag: Waste management

Japan: Mitsubishi UBE Cement’s joint project with the city of Kitakyushu to pilot carbon recycled materials in public infrastructure has been selected for the Ministry of Economy, Trade and Industry’s 2024 grant programme.

Centred around the producer’s Kyushu plant in Kurosaki, Kitakyushu, the project will recycle CO₂ and waste cement from local sources for use in municipal construction. Mitsubishi UBE Cement said it aims to establish a model for resource circulation that can be expanded nationwide.

New Zealand: Fletcher Building will begin using hard-to-recycle plastics and wood as alternative fuels in its cement production process during 2025, as part of its ‘front-end firing project’, according to The Post newspaper. The company aims to be 100% coal-free by 2030. It said wood pellets and shredded tyres currently substitute for 50% of coal. The new additions will raise this to 70–80%. Fletcher Building began burning wood pellets in 2003, construction waste in 2010 and tyres in 2023. Fletcher Building said it plays a “significant role in waste diversion for New Zealand."

Spain: Holcim is exploring the use of char as an alternative fuel in cement production as part of the Plastics2Olefins project, in collaboration with Geocycle. The producer is evaluating char samples made from different types of plastic waste.

Geocycle plant manager Cristina Gómez said “Since char properties can vary depending on the feedstock, the company is conducting detailed evaluations – looking at calorific value, moisture content, heavy metals, halogens, and sulphur levels, among other parameters.”

These full-scale industrial tests aim to understand how char behaves during combustion, how it affects emissions of CO₂, NO_x, and SO_x, and whether it impacts the stability of the production process or the quality of the cement. Char samples produced at the Repsol pilot plant are being tested at two of Holcim’s facilities: the Quality Central Laboratory and Geocycle Albox. Gómez added “These comprehensive tests provide a solid understanding of char’s properties and help anticipate how it will perform in real-world industrial conditions.”

Holcim is also experimenting with blends of char and petcoke to optimise energy performance and environmental compliance.

Pakistan: Cherat Cement has submitted a proposal to Water and Sanitation Services Peshawar (WSSP) to use municipal solid waste from the city as refuse derived fuel (RDF) under a public-private partnership. The company said that approximately 500t/day of waste is collected from Peshawar and currently dumped at a 1.6Mt capacity landfill. The initiative would replace coal in cement production and generate revenue for WSSP while tackling the issue of solid waste management.

Uganda: Hima Cement has said that over 50% of its fuel for cement production now comes from renewable biomass instead of heavy fuel oil (HFO). Head of regulatory affairs David Mugagga said that the biomass used to fuel the kilns at Hima Cement’s plants is sourced from coffee husks, palm kernels, rice husks and sawdust. Mugagga also said that the company collects hazardous waste to use as fuel, reducing the amount that goes to landfill.

India: The Rural Development Department has signed a memorandum of understanding with ACC Cements to co-process non-recyclable plastic waste at its Barmana plant. The initiative will cover the Bilaspur, Chamba, Kangra, Kullu and Mandi districts. The partnership follows similar agreements with Ambuja Cements and UltraTech Cements, and aims to reduce environmental pollution and landfill use through cement kiln co-processing.

India: Swachha Andhra Co. chair K Pattabhiram and Andhra Pradesh Pollution Control Board chair P Krishnaiah said cement manufacturers must use refuse-derived fuel (RDF) in kilns as per the Solid Waste Management rules issued by the Ministry of Housing and Urban Affairs in 2018. The regulation requires a minimum RDF usage of 15% to reduce coal consumption in cement production.

Pattabhiram said 7000t of waste is generated daily from 123 urban local bodies, and stressed the need for daily processing to eliminate dumping yards. He urged cement plants within 400km of municipalities to comply. Krishnaiah added that a joint technical committee would be formed to assist cement producers in implementing the rule.

Slovakia: Slovak cement plants recovered 374,000t of alternative fuels made from waste in 2024, replacing 75% of heat from fossil fuels, according to the Cement Manufacturers Association (ZVC) of the Slovak Republic. This has reportedly saved almost 230,000t of coal and reduced the cement plants’ carbon footprint.

Director of ZVC Rudolf Mackovic said “Instead of waste, such as non-recyclable plastics, being deposited in landfills without being used, it is processed into fuel in processing plants. Such an alternative fuel meets strict quality and ecological parameters.”

Kenya: At least 99kg of heroin and cocaine worth US$2.3m were destroyed at the Bamburi Cement Mombasa plant, at the request of the Directorate of Criminal Investigations Kenya, according to a social media post from the company. Bamburi Cement’s kiln was selected as the most secure method for incinerating the seized narcotics.

“Our kilns co-process waste and convert it into energy, reducing CO₂ emissions and supporting a clean circular economy. We are proud to contribute to this public interest solution that has eliminated a threat posed to our fellow Kenyans,” said Sustainability & Geocycle Director Jane Wangari.

Bamburi Cement has previously collaborated with multi-agency teams to dispose of over 5000t of hazardous waste imported into the country at its Mombasa facility.

India: UltraTech Cement has signed a memorandum of understanding with the Himachal Pradesh Rural Development Department to process non-recyclable plastic waste at its Baga cement plant in Solan. The plant will process waste from Bilaspur, Hamirpur, Mandi, Solan and Una districts. The Rural Development Department operates 29 plastic waste management units that will supply waste to the plant.