A low carbon future for Brazilian steel and cement: A joint assessment under the circular economy perspective

IF 5.4 Q1 ENVIRONMENTAL SCIENCES

Resources, conservation & recycling advances Pub Date : 2023-05-01 DOI:10.1016/j.rcradv.2023.200141

Jhonathan Fernandes Torres de Souza, Sérgio Almeida Pacca

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Abstract

Steel and cement industries are essential for developing economies and challenges for global climate change mitigation. Low carbon (LC) forecasting that couples steel and cement, focusing on circular economy (CE) and industrial symbiosis (IS) concepts, are scarce. Considering such concepts, this paper proposes an intersetorial model for these industries, based on the Brazilian case. The findings indicate sustainable charcoal-based steelmaking as the greatest CE emissions abatement measure. Regarding IS, we have found that the more fly ash is available, the lower is the average abatement cost, but such an strategy is not gainful for overall abatement, given sizable coal-fired power plants’ emissions. CE and IS can avoid 2.75 billion tCO₂e or 52% of the business-as-usual emissions up to 2050 at US$ 10/tCO₂e by intensifying existing processes in Brazil. CE and IS approaches extend the opportunities for economic savings and carbon reduction, therefore they must be part of future LC portfolios.

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巴西钢铁和水泥的低碳未来:循环经济视角下的联合评估

钢铁和水泥行业对发展中经济体至关重要，也是缓解全球气候变化的挑战。关注循环经济（CE）和工业共生（IS）概念的钢铁和水泥结合的低碳（LC）预测很少。考虑到这些概念，本文基于巴西的案例，提出了这些行业的审间模型。研究结果表明，可持续的木炭炼钢是最大的CE减排措施。关于IS，我们发现可用的飞灰越多，平均减排成本就越低，但考虑到燃煤发电厂的排放量相当大，这种策略对整体减排没有好处。CE和IS可以通过加强巴西的现有流程，在2050年之前避免27.5亿tCO2e，即按10美元/tCO2e计算的52%的正常排放量。CE和IS方法扩大了经济节约和碳减排的机会，因此它们必须成为未来LC投资组合的一部分。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Resources, conservation & recycling advances Environmental Science (General)

CiteScore

11.70

自引率

0.00%

发文量

审稿时长

76 days