Displaying items by tag: Waste management

Vietnam: Industry leaders have argued that co-processing of non-recyclable plastic waste in cement kilns could be a scalable solution to advance Vietnam’s sustainability and circular economy goals. At a workshop held in Hanoi on 2 October 2025, the Norwegian Foundation for Scientific and Industrial Research (SINTEF) and the Royal Norwegian Embassy, in partnership with the Vietnam National Cement Association (VNCA), concluded the OPTOCE Project (‘Ocean Plastic Turned into an Opportunity in Circular Economy’), funded by the Norwegian government.

Norwegian Ambassador to Vietnam Hilde Solbakken said “Combating marine plastics and climate change is a top priority for Norway – both globally and in Vietnam. Through OPTOCE, we’ve seen how science-based solutions like co-processing can transform plastic waste into a resource that benefits the climate, the economy and communities.”

OPTOCE was originally launched as a regional initiative in five countries, including Vietnam, and later expanded to eight countries across Asia. The workshop featured several presentations and a panel discussion focusing on the legal framework, potential waste supplies, and the practices and challenges in implementing co-processing in Vietnam.

Dr Kåre Helge Karstensen, chief scientist and programme manager of OPTOCE, added that the initiative has proven co-processing to be both technically feasible and environmentally sound. “The next step is to move beyond pilots and integrate this solution into national policy frameworks to drive systemic change,” he said.

Dr Lương Đức Long, VNCA vice president, said Vietnam’s cement industry is already applying co-processing successfully. “Co-processing waste in cement kilns is a safe and effective solution. We hope the government introduces specific policies and incentives that support enterprises and technology transfer. If we join forces, co-processing will turn wastes into ‘black gold’ and cement factories into ideal co-processing hubs,” he said.

Vietnam’s cement plants, including INSEE’s Hon Chong facility in Kien Giang and Lam Thach Green Cement (QNC)’s plant in the north, have piloted this approach since 2021, achieving thermal substitution rates of 35–40%.

Indonesia: Indocement, through its subsidiary PT Semen Bosowa Maros, has signed a memorandum of understanding (MoU) with the city of Makassar’s government to collaborate on the use of refuse-derived fuel (RDF) generated from the city’s waste management system.

The agreement was signed by Syamsul Rijal, Director of PT Semen Bosowa Maros, and Munafri Arifuddin, Mayor of Makassar, in the presence of company representatives.

Belarus: The country’s cement sector is intensifying efforts to use refuse-derived fuel (RDF) in cement production, according to the state information agency Belarus Telegraph Agency.

Belarusian Cement Company introduced an RDF processing line in 2021 at OAO Krasnoselskstroymaterialy in Grodno Oblast, enabling full incineration of RDF supplied by local waste-processing plants. Contracts are reportedly already in place with RDF suppliers for 25,000t of the fuel to be delivered by the end of 2025.

In September 2025, industrial trials of RDF made by Minsk-based Ekores will begin. If successful, shipments from the company could double from 15,000t to 30,000t, raising total RDF use to 40,000t in the final quarter of 2025.

Plans are also underway to expand RDF infrastructure in 2026, with a regional municipal waste management and RDF production complex under construction near Volkovysk.

South Korea: The Ministry of Environment has announced a pilot project to recycle waste fabric scraps from sewing factories into alternative fuel for the cement industry. The agreement has been signed with: textile companies Pang Rim, Sewang, Sinhan Spinning & Textile; cement companies Ssangyong C&E and Asia Cement; and the Korea Recycling Service Agency (KORA). It expands on an earlier initiative launched in 2024 with four Seoul districts.

Under the project, fabric scraps that were previously incinerated or landfilled will be separated, sorted and processed into intermediate fuel, which cement plants will use in the production process. The Ministry said that KORA will support raw material supply and recycling logistics, while cement firms will adopt the fabric-derived fuel to reduce waste and fossil fuel use.

Kim Go-eung, Director General of the Resources Circulation Bureau, said “The separation, sorting and recycling of waste are essential elements for producing high-quality recycled raw materials. To establish a circular system, we will continue to identify and expand various measures so that the supply of excellent recycled raw materials and the securing of demand sources can be balanced.”

India: Tiruchi Corporation has intensified efforts to manage non-recyclable plastics by diverting them to cement plants for use as alternative fuel. The city generates 400 - 450t/day of waste, of which about 75% is segregated at source. Non-recyclable plastics are collected through door-to-door systems and sent to Dalmia Cements’ and UltraTech Cement’s plants, where they are used as refuse-derived fuel (RDF) in the kilns. Since July 2024, 2384t of plastics have been diverted to cement plants.

An upcoming automated material recovery facility at Ariyamangalam, with a capacity of 250t/day, is expected to further improve segregation, ensuring recyclable, non-recyclable, inert and RDF streams are directed to cement plants for reuse.

Mexico: Moctezuma inaugurated a US$12m alternative fuels storage system at its Tepetzingo cement plant in Morelos, after two years of engineering, planning and execution. The facility will process over 150,000t/yr of waste, including end-of-life tyres, municipal solid waste and non-recyclable materials, which will replace fossil fuels in cement production, with a goal of 30% substitution by 2030. The company said that the benefits of the project include saving thousands of tonnes of waste from landfill and mitigating methane emissions.

The producer, the Morelos government and the Ministry of Sustainable Development are also developing a circular economy centre in Jiutepec with an additional investment of US$1.6m. The facility will collect, shred and convert up to 3000t/month of tyres into alternative fuels.

Japan: Cement producers used 21.9Mt of post-consumer materials and by-products in the 2024 financial year, down by 3% year-on-year, marking the third consecutive annual decline, according to the Japan Cement Association.

Coal ash and blast furnace slag, which together make up over 50% of the total, both declined, although post-consumer plastics increased for a fourth consecutive year.

Cement production, including clinker for export, also fell by 3% to 45.7Mt. The amount of byproducts used per tonne of cement dropped from 480kg in 2023 to 478kg, but remained above 400kg for the 21st year in a row.

Argentina: The La Metropolitana recycling plant in Donovan despatched 14.1t of end-of-life tyres for industrial co-processing at Cementos Avellaneda’s La Calera plant. The facility uses the tyres as an energy source under a circular economy model. The initiative is promoted by the Ministry of Environment and Sustainable Development to support environmental protection and proper waste management.

Colombia: Holcim Colombia has invested US$2m to modernise its co-processing platform at its Nobsa cement plant in Boyacá. The upgraded facility will process 100,000t/yr of waste into alternative fuels for the cement plant, raising thermal substitution to 40% in the short term, with a target of 70% by 2030.

CEO of Holcim Colombia Martín Costanian said “This project realises our dream of optimising the crushing circuit and scaling our capacity to replace fossil fuels with more sustainable and truly circular solutions.”

The system renovation includes the addition of a shredder with a nominal capacity of 10t/hr, as well as new transfer systems and a modern dosing system capable of feeding up to 20t/hr of alternative fuels to the kiln. The waste used will consist of paper, cardboard, plastics and biomass.

Manager of Geocycle José Méndez said “This project represents true circularity and a solution for the thousands of pieces of waste that end up in landfills each year.”

UK: Titan Group will build and operate a processing and beneficiating facility for ponded fly ash at the former Fiddler’s Ferry power station in Warrington, following a long-term agreement with site owner Peel NRE. The plant will process 300,000t/yr of wet fly ash from 2027, with scope to double the capacity at a later date. Titan will use the material in low-carbon cement, while Peel NRE will receive help to advance restoration of the site. The ash will reportedly meet BS EN 450 quality standards.

Peel NRE director Kieran Tames said “We are very pleased to have reached this agreement with Titan, which follows years of hard work fully evaluating the potential to transform the waste ash material from the power station directly into a low-carbon construction product. This agreement has the potential to accelerate the recovery of waste ash from the lagoons, enabling their restoration and enhancement as envisaged by the development framework that was approved by the local authority last year. Through our partnership, existing customers will continue to source ash from the site, ensuring continuity of supply for their applications.”