Displaying items by tag: CO2

Nigeria: Dangote Cement plans to upgrade its Ibese cement plant in order to use biofuels in its cement production. The Nigerian Guardian newspaper has reported that the plant will receive a pneumatic feeding system for the kiln of its Line 2. Dangote Cement plans to use palm kernel shells, rice husks, coconut shells and sugarcane bagasse, along with sawdust. The producer says that this will reduce its CO₂ emissions by 5.2% and help to divert local agricultural waste from incineration.

Project head Sumaila Muhammed said “We carried out alternative fuel resource mapping within our host communities. We decided to collect these wastes and convert them into valuable energy resources as smokeless, renewable biofuel."

Philippines: Holcim Philippines says that it has successfully processed its millionth tonne of waste into alternative fuel (AF) for use in its cement production. BusinessWorld News has reported that the cement producer reached this circular economy milestone in partnership with 35 different municipal authorities.

Holcim Philippines CEO Horia-Ciprian Adrian said "Our success in reusing discarded materials is further reducing our consumption of natural resources and carbon footprint. This also enables us to help industries and communities achieve their zero waste objectives."

Ireland: A court has ruled that the Irish government need not pay legal costs for Environmental Trust Ireland president Michelle Hayes' challenge against the Environmental Protection Agency (EPA) in mid-2022. Hayes unsuccessfully sued the EPA for issuing Irish Cement with a licence to use alternative fuel (AF) at its Limerick cement plant in May 2021. The AF will comprise up to 90,000t/yr of waste tyres, biomass and/or mining by-products.

At the costs hearing, the court noted that Hayes had already caused the EPA to incur 'very significant' legal costs. The court said that Hayes 'sought to have the taxpayer pay even more.' It added that, as a solicitor at Hayes Solicitors Limerick, which represented her in her unsuccessful challenge, Hayes stood to effectively benefit from any recuperated costs. The court concluded "It would mean that legal practitioners like herself are paid by the taxpayer for bringing environmental litigation which is unmeritorious."

Thailand: ThyssenKrupp Polysius says that it has successfully supplied and installed a Prepol SC alternative fuels (AF) system at a 12Mt/yr cement plant in Thailand. The system will supply the plant's four lines with 4000t/day of AF.

ThyssenKrupp Polysius' Asia Pacific CEO Lukas Schoeneck said "Asia Pacific, with its tremendous municipal solid waste (MSW) problem, is ideal when it comes to replacing coal with AF. The Prepol SC technology significantly reduces the need to treat MSW before using the inherent calorific value. Additionally, it helps to further reduce the ambitious CO₂ limit targets in the region."

Spain: Mexico-based Cemex and its venture capital subsidiary Cemex Ventures have invested in Waste to Energy Advanced Solutions (WtEnergy), an energy startup company that has developed a process to transform solid waste into synthesis gas (Syngas) for industrial purposes.

WtEnergy converts biomass and non-recyclable waste into Syngas, which can be used in the short-term as a fossil fuel alternative or be upgraded in the medium- and long-term to gases such as biomethane or pure hydrogen. Cemex intends to incorporate this energy source into its clinker and cement manufacturing process, looking to further reduce the carbon footprint of its operations. Cemex aims to increase its fossil fuel substitution rate by 20% by 2030.

Gonzalo Galindo, the president of Cemex Ventures, said, “This investment aligns with our strategy to find innovative clean fuel and energy sources for the cement industry.” He added, “We have outlined an ambitious rollout strategy across multiple operations, starting with Spain and other European countries before expanding to other international markets.”

Mexico: Cemex Mexico plans to install hydrogen injection systems at four cement plants across Mexico. The producer will use the technology to increase alternative fuel (AF) substitution at the plants by 8 - 10%. A 40% reduction in Scope 3 purchased fuel emissions forms part of Cemex's 2020 -2030 CO₂ emissions reduction strategy. Through the decarbonisation and circular economy pillars of its Future in Action plan, the group aims to become carbon neutral by 2050.

Cemex Mexico president Ricardo Naya said "Hydrogen is a key technology to accelerate the implementation of our climate action roadmap."

The El Financiero newspaper has reported that Cemex set a new group record AF substitution rate of 34% in September 2022. It uses hydrogen at all of its European cement plants and at one plant in the Dominican Republic.

France: Authorities have granted construction and environmental clearances to N + P Group to set up its planned Isbergues Subcoal solid recovered fuel (SRF) plant in Hauts-de-France. When commissioned in 2024, the 150,000t/yr-capacity plant will be France's first to commercially produce the coal alternative for cement and other industries. The company says that its products will be able to eliminate 100,000t/yr of industrial CO₂ emissions nationally. N + P Group will use locally sourced waste at the unit.

Chief development officer Lars Jennissen said “Obtaining the environmental and construction permit is a major achievement for us, and we thank our colleagues and partners for their hard work in realising this important milestone. The new location will contribute to the circular economy in Hauts-de-France by converting regional non-recyclable wastes into new resources for regional customers, and it offers a massive potential CO₂ savings for the French market.”

Spain: Cementos Portland Valderrivas has partnered with the University of Seville to build a non-hazardous waste processing plant to produce refuse-derived fuel (RDF) at its Alcalá de Guadaira cement plant in Seville. The producer hopes that, when commissioned, the installation will help to 'significantly' reduce the plant's energy costs and CO₂ emissions by substituting its RDF for petcoke in cement production.

Along with a renewal to the Alcalá de Guadaira plant's mining lease, the total cost of the project is Euro6m.

New Zealand: Fletcher Building subsidiary Golden Bay Cement has co-processed 80,000t of waste in production of its EcoSure reduced-CO₂ general-purpose cement at its Golden Bay, Whangarei, cement plant. The plant has achieved a coal substitution rate of 50%. It has processed various waste streams, including 3 million used tyres. EcoSure cement generates CO₂ emissions of 699kg/t of product, 20% less than its imported alternatives, according to Golden Bay Cement. Fletcher building CEO Nick Traber said that this figure is 'simply our starting point.' The company's next target is to achieve a 30% CO₂ reduction by 2030.

Traber said "We needed to think outside the box, or rather the cement bag, to be more precise. The challenge was around what enhancements we could make to our manufacturing processes at our Golden Bay cement works in to improve the plant's sustainability. We quickly realised that consuming used tyres and wood waste as alternative fuels was a win-win. When we started with the idea in 2015, we were aiming to replace 15% of coal with end-of-life tyres. Fast forward to 2022, and our rate of coal substitution is now at 50%, which has obviously delivered further reductions in carbon emissions, as well as helping to offset increased coal costs."

Czech Republic: Lafarge Cement says that it has achieved an alternative fuel (AF) thermal substitution rate of 95% at its Čížkovice cement plant. The plant's fuel mix includes contaminant fractions from local plastic recycling. As a result of the move, the plant no longer uses any natural gas in its cement production.

In 2022 as a whole, the producer plans to increase its share of reduced-CO₂ cement sales, increase construction waste recycling in its products and reduce its cement's water consumption.