Displaying items by tag: Biofuel
Sweden: Germany-based HeidelbergCement subsidiary Cementa plans to upgrade its Slite unit in Gotland to become the world’s first carbon-neutral cement plant. This will be achieved through modification of the plant’s fuel system to ‘significantly raise’ biobased fuel substitution, as well as 100% carbon capture and storage (CCS) via a 1.8Mt/yr CCS installation. Full-scale capturing of the plant’s CO2 emissions is scheduled by 2030.
Chair Dominik von Achten said, “HeidelbergCement will be the leader in the global cement industry on its transformation path towards climate neutrality. The key for decarbonising our industry is to find, apply and scale technical solutions for carbon capture and utilisation or storage (CCU/S). After having gained valuable experience with CCU/S technologies in Norway and other countries, we are now excited to make the next step with a completely carbon-neutral cement plant in Sweden.”
Ambuja Cement completes biofuels shipping trial
14 April 2021India: Ambuja Cement has successfully sent two cement shipments to their destinations using biofuel-powered ships. Two of the company’s cement carriers delivered cement in India while running using biofuel derived from soya extract.
The biodiesel blend (B20) was in compliance with International Maritime Organisation sulphur content requirements and met International Convention for the Safety of Life at Sea (SOLAS) levels in terms of flash point requirements. No increase of NOx was observed with biodiesel blend as compared to low sulphur high-speed diesel (LSHSD), rather the emission level was found to be less. The reduction in CO2 was found to be around 7% and the total life cycle reduction of CO2 by life cycle analysis was measured to be around 21%, as the biodiesel from soya extract had a reduction of life cycle greenhouse gas emissions by 70%.
Following the successful initiative, the Directorate General of Shipping has approved biofuels trials for the rest of Ambuja Cement’s fleet, which are mainly deployed on the Indian coastal route.
Ambuja Cement implements biofuels for shipping
10 February 2021India: LafargeHolcim subsidiary Ambuja Cement has begun a trial of bio-diesel fuel blends for its shipping fleet. It says that the fuel change will reduce the fleet’s CO2 emissions by 25%.
Managing Director and chief executive officer Neeraj Akhoury said, “With the introduction of bio-diesel blends, we are significantly contributing towards the reduction of greenhouse gas emissions by introducing a suitable alternate green fuel that helps achieve our parent, LafargeHolcim’s, sustainability vision of ‘net zero pledge 2030’.”
Dalmia cement commits itself to carbon negativity by 2040
20 September 2019India: Dalmia Cement has revealed its commitment to dropping its net CO2 emissions to below 0t/yr by 2040 as part of its new ‘Future Today’ branding. The company’s plan consists of a transition to renewable power by 2030 and the adoption of plant matter and refuse-derived fuel (RDF) for 100% of its fuel needs. Dalmia’s 4.0Mt/yr integrated Ariyalur cement plant in Tamil Nadu will receive a 0.5Mt/yr carbon capture and storage facility in 2022 at the latest. The UK-based Carbon Clean Solutions will provide technology and operational services for the installation, the largest in the cement industry. Mahendra Singh, managing director and CEO of Dalmia Cement, has expressed the hope that its product should become ‘the World’s greenest cement.’
INC looks to expand fuels mixture
03 June 2015Paraguay: Industria Nacional del Cemento (INC) is looking to diversify its fuels mixture to include other types of oils and possibly biofuels. The company has signed an agreement with the engineering faculty at Asuncion National University (FIUNA) to certify the use of biofuels. INC's president Jorge Mendez believes that, from 2016, INC may start using a variety of fuels, following a US$50m investment in its furnace. This could save US$22m/yr, but it will not necessarily mean that biofuel will be used.
Canada: Pond Biofuels has set up a bioreactor pilot plant at St Marys cement plant in St Marys, Ontario. The raw smokestack gas from the cement plant is recycled to grow algae in a third-generation 25,000L bioreactor at the on-site pilot plant. The resulting algae can be used for bio-oil, food, fertiliser and sewage treatment.
The algae consume CO2, NOX and SOX from the smokestack gas. Every 1kg of algae produced prevents 2kg of CO2 from being emitted into the atmosphere. The St Marys Cement Plant produces 720,000t/yr of cement and 540,000t/yr of CO2. Currently, Pond Biofuels only uses a small portion of the total CO2 output.
"We consider ourselves a carbon recycling technology," said Steve Martin, founder of Pond Biofuels.
The algae thrive in light filled, CO2-rich conditions, which are provided in the bioreactor. The light comes from custom-designed red LED lights that flash continuously. The rapid flashing fools the algae into thinking the days are very short, so it grows very fast. "The algae evolve quite quickly; we can get four, five, six generations of algae in a day," said Martin.
Proving the production of algae at commercial scale is important, but the other important part is finding a market for the algae. "Between 10 – 20% of it is oil that be used for producing biodiesel," said Martin. It could also be used a coal replacement, a soil amendment or even animal feed and it can be easily dried using waste heat from the cement plant.
Namibia: Namibia's Ohorongo Cement plant plans to use blackthorn as biofuel for cement production. The company sources some 30% of its energy requirements from biofuel and plans to raise this figure to 80%.
"In the long term we will be very competitive," said Ohorongo Cement's chairman, Gerhard Hirth. Not having to rely on coal and oil imports, Ohorongo Cement will be able to keep energy costs down while making a positive contribution to the environment.
Hirth has invested US$340m in the 600,000t/yr capacity Ohorongo Cement plant. Some 500,000t/yr is sold on the domestic market and the rest is exported to Botswana, Zimbabwe and Zambia. Ohorongo Cement employs 330 people directly and 2500 indirectly.
Ohorongo Cement is currently under threat from a new market player. In order to side-step the 60% levy on cement imports into the country, a Chinese cement producer has recently begun operations at its own plant in Namibia. According to Hirth, Ohorongo Cement has lost more than Euro30m and is undertaking legal proceedings against its rival.