Valorization of Coal-Based Solid Wastes as Soil Amendments: A Review of Modifications, Mechanisms, and Environmental Pathways in the Chinese Circular Economy
石炭系固形廃棄物の土壌改良材としての価値化：中国の循環経済における改良、メカニズム、環境経路のレビュー (AI 翻訳)
Zhongli Jiang, Qinggang Wang, Yinnan Cao, Pengfei Chen, Hongyu Chen, Li Z, Chengjie Yin
🤖 gxceed AI 要約
日本語
本レビューは、石炭系固形廃棄物（石炭ガンギ、フライアッシュ、ガス化スラグ、脱硫石膏）を土壌改良材として活用する可能性を検討。改良手法、土壌への影響（物理性、化学性、微生物相）、重金属固定化、環境リスク（特に有害元素の溶出）を体系的に評価。循環経済の枠組みの中で、長期的安定性や経済的スケーラビリティなど研究ギャップを指摘し、今後の研究の方向性を示す。
English
This review evaluates the feasibility of valorizing coal-based solid wastes (coal gangue, fly ash, gasification slag, desulfurization gypsum) as soil amendments within a circular economy framework. It systematically examines modification methods, effects on soil physical, chemical, and microbial properties, heavy metal immobilization, and environmental risks including toxic element leaching. Critical knowledge gaps such as long-term contaminant stability and economic scalability are identified, with recommendations for future research.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本でも石炭火力発電に伴う石炭灰やガス化スラグの発生があり、これらを土壌改良材として活用する取り組みは廃棄物削減と土壌健全性の両面で意義がある。本レビューは中国の事例を中心とするが、改良手法やリスク管理の枠組みは日本の循環経済政策にも示唆を与える。
In the global GX context
This review provides a comprehensive synthesis of the state of knowledge on converting coal-based solid wastes into soil amendments, relevant to global circular economy and soil health initiatives. While focused on China, the modification techniques and risk management strategies are transferable to other regions with coal waste challenges.
👥 読者別の含意
🔬研究者:Identifies key research gaps such as long-term contaminant stability and molecular immobilization mechanisms, guiding future experimental studies.
🏢実務担当者:Offers practical insights on modification methods and risk controls for companies seeking to valorize coal waste as soil conditioners.
🏛政策担当者:Provides evidence for developing regulations on safe application of coal-based amendments and integrating waste management with soil restoration policies.
📄 Abstract（原文）
The massive generation of coal-based solid wastes (CBSWs) poses severe environmental challenges globally, while widespread soil degradation threatens food security and ecosystem stability. This review critically evaluates the technical feasibility and agro-ecological benefits of valorizing CBSWs—including coal gangue, fly ash, gasification slag, and desulfurization gypsum—as soil amendments within a circular economy framework. We systematically examine the physicochemical characteristics of major CBSW types, analyze modification methods that enhance their performance and safety, and assess their multifaceted effects on soil physical structure, chemical properties, nutrient dynamics, heavy metal immobilization, and microbial communities. A dedicated section addresses environmental risks, particularly toxic element leaching, and outlines integrated control strategies from source selection to post-application monitoring. Critical knowledge gaps persist regarding long-term contaminant stability under climate change scenarios, molecular-scale immobilization mechanisms, and economic scalability. Future research must prioritize advanced low-energy modification technologies, robust long-term field studies, and harmonized international regulations. We conclude that with scientifically guided modification and stringent risk management, CBSWs can be transformed into safe, multifunctional soil conditioners, simultaneously addressing industrial waste management and contributing to global restoration of degraded soil health.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/recycling11060104first seen 2026-06-12 05:28:04
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