The excessive demand for phosphorus-based fertilizers is contributing to the undesired byproduct of phosphogypsum(PG),typically found in large quantities in phosphoric acid industry.Without proper management,this indu...The excessive demand for phosphorus-based fertilizers is contributing to the undesired byproduct of phosphogypsum(PG),typically found in large quantities in phosphoric acid industry.Without proper management,this industrial waste poses a significant environmental pollution risk.Current technologies are struggle to effectively handle the volume of PG produced,but one promising solution is its conversion into hemihydrate gypsum(CaSO_(4)·0.5 H_(2)O,HH).HH can exist in two phases,α-HH andβ-HH,withα-hemihydrate gypsum(α-HH)being preferred for its complete crystal structure and lower water requirement for hydration.The morphology ofα-HH gypsum is crucial for its material applications,and controlling crystal morphology is possible through the use of suitable crystal modifiers.This review explores various aspects of crystal modifiers and highlights their role in the preparation ofα-HH from PG.It suggests that leveraging the interfacial properties of PG could lead to innovative applications.Additionally,the review outlines future directions for PG development and identifies challenges to be addressed in the next steps.展开更多
磷石膏(PG)是湿法磷酸工艺中的固废产物,且堆积量较为庞大,了解磷石膏的处理方法及应用现状,可以为该领域的一线科研人员提供研发思路借鉴。运用文献计量学方法,统计了2000~2024年Web of Science(WoS)核心数据库和中国知网(CNKI)核心数...磷石膏(PG)是湿法磷酸工艺中的固废产物,且堆积量较为庞大,了解磷石膏的处理方法及应用现状,可以为该领域的一线科研人员提供研发思路借鉴。运用文献计量学方法,统计了2000~2024年Web of Science(WoS)核心数据库和中国知网(CNKI)核心数据库的相关文献进行了检索分析,深入剖析了PG应用现状、热点趋势,并对国内外各自的发展提出重点研究方向,以期为PG的资源化利用提供解决思路。结果显示:2000~2024年,国内外关于PG应用的发文量逐年上升,累计达到6408篇,PG的研究内容主要为应用过程中的杂质元素影响,其中经改性处理和掺混其他物质后,应用至建筑领域的研究愈发火热。国外初期研究注重放射性元素对环境的影响,中期注重稀土元素的提取,而国内初期研究侧重于生产化学产品,中期侧重于建筑领域应用研究,近期国内外都开始注重PG的机械强度性能测试。相较于国外PG应用行业较为集中,国内PG的应用研究注重多行业共同发展。展开更多
基金Project(2022YFC3902703)supported by the National Key R&D Program of ChinaProject(KF22028)supported by the Special Project for High Quality Development of the Ministry of Industry and Information Technology of China+1 种基金Project(62004143)supported by the National Natural Science Foundation of ChinaProject(2022BAA084)supported by the Key R&D Program of Hubei Province,China。
文摘The excessive demand for phosphorus-based fertilizers is contributing to the undesired byproduct of phosphogypsum(PG),typically found in large quantities in phosphoric acid industry.Without proper management,this industrial waste poses a significant environmental pollution risk.Current technologies are struggle to effectively handle the volume of PG produced,but one promising solution is its conversion into hemihydrate gypsum(CaSO_(4)·0.5 H_(2)O,HH).HH can exist in two phases,α-HH andβ-HH,withα-hemihydrate gypsum(α-HH)being preferred for its complete crystal structure and lower water requirement for hydration.The morphology ofα-HH gypsum is crucial for its material applications,and controlling crystal morphology is possible through the use of suitable crystal modifiers.This review explores various aspects of crystal modifiers and highlights their role in the preparation ofα-HH from PG.It suggests that leveraging the interfacial properties of PG could lead to innovative applications.Additionally,the review outlines future directions for PG development and identifies challenges to be addressed in the next steps.
文摘磷石膏(PG)是湿法磷酸工艺中的固废产物,且堆积量较为庞大,了解磷石膏的处理方法及应用现状,可以为该领域的一线科研人员提供研发思路借鉴。运用文献计量学方法,统计了2000~2024年Web of Science(WoS)核心数据库和中国知网(CNKI)核心数据库的相关文献进行了检索分析,深入剖析了PG应用现状、热点趋势,并对国内外各自的发展提出重点研究方向,以期为PG的资源化利用提供解决思路。结果显示:2000~2024年,国内外关于PG应用的发文量逐年上升,累计达到6408篇,PG的研究内容主要为应用过程中的杂质元素影响,其中经改性处理和掺混其他物质后,应用至建筑领域的研究愈发火热。国外初期研究注重放射性元素对环境的影响,中期注重稀土元素的提取,而国内初期研究侧重于生产化学产品,中期侧重于建筑领域应用研究,近期国内外都开始注重PG的机械强度性能测试。相较于国外PG应用行业较为集中,国内PG的应用研究注重多行业共同发展。
