Cement kiln geared up to dispose industrial hazardous wastes of megacity under industrial symbiosis

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling Pub Date : 2023-12-12 DOI:10.1016/j.resconrec.2023.107358

Kailingli Liao , Zeshi Feng , Jin Wu , He Liang , Yuhan Wang , Wenfei Zeng , Yichun Wang , Jinping Tian , Rui Liu , Lyujun Chen

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Abstract

Industrial symbiosis promotes circular economies with environmental and economic benefits. China's 14th Five-Year Plan for Circular Economy Development prioritizes waste recycling and co-processing in cement kilns. This research investigates the advantages of establishing symbiotic relationships between industrial park and cement kiln to address industrial hazardous waste (IHW) challenges. Using life cycle assessment and net cost analysis with system expansion, we quantify environmental and economic disparities between industrial park-cement symbiosis and non-symbiosis scenarios. The symbiosis mode reduces carbon emissions by 11 % and saves 8 % cost annually compared to non-symbiosis. Optimizing upstream waste fine management enhances calorific value and fossil fuel substitution, increasing CO₂ reduction and economic benefits but raising acidification and terrestrial ecotoxicity. Upstream-downstream cooperation is vital for systematic environmental relief. Employing carbon capture and ultra-low emissions in cement kilns mitigates environmental impact. These findings guide policies for better hazardous waste management, fostering a "waste-free city" and circular economy.

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水泥窑在工业共生中处理大城市的工业危险废物

工业共生促进了具有环境和经济效益的循环经济。中国 "十四五 "循环经济发展规划将水泥窑废物回收和协同处理列为优先事项。本研究探讨了在工业园区和水泥窑之间建立共生关系的优势，以应对工业危险废物（IHW）的挑战。利用生命周期评估和系统扩展净成本分析，我们量化了工业园区与水泥共生和非共生方案之间的环境和经济差异。与非共生模式相比，共生模式每年可减少 11% 的碳排放，节省 8% 的成本。优化上游废物精细管理可提高热值和化石燃料替代率，增加二氧化碳减排量和经济效益，但会加剧酸化和陆地生态毒性。上下游合作对于系统性环境缓解至关重要。在水泥窑中采用碳捕集和超低排放技术可减轻对环境的影响。这些发现为更好地管理危险废物、促进 "无废物城市 "和循环经济的政策提供了指导。

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来源期刊

Resources Conservation and Recycling 环境科学-工程：环境

CiteScore

22.90

自引率

6.10%

发文量

625

审稿时长

23 days

期刊介绍： The journal Resources, Conservation & Recycling welcomes contributions from research, which consider sustainable management and conservation of resources. The journal prioritizes understanding the transformation processes crucial for transitioning toward more sustainable production and consumption systems. It highlights technological, economic, institutional, and policy aspects related to specific resource management practices such as conservation, recycling, and resource substitution, as well as broader strategies like improving resource productivity and restructuring production and consumption patterns. Contributions may address regional, national, or international scales and can range from individual resources or technologies to entire sectors or systems. Authors are encouraged to explore scientific and methodological issues alongside practical, environmental, and economic implications. However, manuscripts focusing solely on laboratory experiments without discussing their broader implications will not be considered for publication in the journal.