Displaying items by tag: Waste

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.

China: Authorities in the province of Hunan have identified a cement plant as the source of thallium contamination in the Leishui River following a botched demolition at the end of 2024, according to Sixth Tone news.

Yongxing County officials said that rainfall had washed thallium-laden dust from a dismantled kiln into the river. Levels peaked at 0.13μg/L, exceeding the national standard of 0.1μg/L, but have since returned to safe levels. The nearby city of Chenzhou is reportedly a hub for non-ferrous metal mining and processing, and a number of Chinese cement plants have begun to process industrial solid waste in recent years. According to Peng Yingdeng, a researcher at the Ministry of Ecology and Environment, this method is a common approach for hazardous waste disposal, but can lead to high concentrations of thallium salts in the kiln’s residue. The owner of the plant, Hunan Liantian Cement, added solid waste management to its list of businesses in September 2024.

The local government has despatched teams to apply chemical treatments to the affected areas, with water quality since returning to safe levels. Local residents’ drinking water was reportedly not affected.

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.”

Canada: Progressive Planet has secured up to US$3.2m in funding from Sustainable Development Technology Canada (SDTC) to support the construction of a pilot plant for PozGlass, its low-carbon supplementary cementitious material (SCM) made from post-consumer glass. The funding will be distributed over four years, with the first tranche of US$1m received on 31 January 2025.

"PozGlass is our solution to reducing the carbon footprint of cement production. This funding allows us to innovate, reduce emissions and create value from post-consumer glass, a material that has been historically misallocated and considered waste," said Progressive Planet CEO Steve Harpur.

Progressive Planet signed a purchase agreement with Lafarge Canada in June 2023 for all PozGlass produced at the pilot plant, up to a maximum of 3500t/yr. Under the agreement, Lafarge Canada will provide technical guidance and support for the plant’s design, construction and operation.

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: Around 67t of non-recyclable materials collected from the city of Ernakulam have been sent to cement plants as refuse-derived fuel (RDF) for the plant’s processes, according to October 2024 estimates. 36t/day of materials from local bodies and an additional 27t/day from Clean Kerala Company facilities are handed over to cement plants, with private facilities contributing 3.9t. The waste generated in households and commercial establishments was sorted at material collection facilities and resource recovery units managed by local bodies, before being used for energy generation in cement manufacturing. Haritha Karma Sena volunteers manage the collection of non-biodegradable materials from households and shops, directing these materials to nearly 15 cement plants across Tamil Nadu, Andhra Pradesh and Gujarat for co-processing.

Nigeria: Lafarge Africa has launched a new alternative fuel and raw material (AFR) platform at its Mfamosing cement plant in Cross River State, with the aim to reduce its CO₂ emissions. The facility will replace traditional fossil fuels with alternative energy sources derived from non-recyclable materials, according to the Nigerian Tribune.

Georgia: Hunnewell Cement, a subsidiary of HeidelbergCement Georgia, has launched a new project to use tyres as an alternative fuel at its Kaspi cement plant, with support from the Georgian government. The project has a budget of US$2.1m, and is expected to create additional job opportunities. It marks a shift from the use of coal and natural gas at the plant, to ‘significantly’ reduce environmental impact and contribute to sustainable development.

Economy minister Levan Davitashvili said "Our goal is to minimise environmental pollution from ‘waste’ while promoting economic development and creating added value.”