有机物的去除减轻了结晶抑制,提高了废水中钾和磷的共回收

IF 7.7 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Jing Yang , Li Chen , Liqiong Yang , Xinru Jiang , Liangwei Deng , Xiaoyu Tang , Wenguo Wang
{"title":"有机物的去除减轻了结晶抑制,提高了废水中钾和磷的共回收","authors":"Jing Yang ,&nbsp;Li Chen ,&nbsp;Liqiong Yang ,&nbsp;Xinru Jiang ,&nbsp;Liangwei Deng ,&nbsp;Xiaoyu Tang ,&nbsp;Wenguo Wang","doi":"10.1016/j.envres.2025.121758","DOIUrl":null,"url":null,"abstract":"<div><div>Magnesium potassium phosphate (MPP) hexahydrate crystallization is a promising approach for the simultaneous recovery of potassium and phosphorus. However, organic matter in the wastewater affects the formation of crystals, which reduces the recovery efficiency. This study constructed the optimal conditions for the formation of MPP crystals, on the basis of which the mechanism of the effect of different types of organic matter on crystallization. The results showed that the using MgCl<sub>2</sub> as the magnesium source, potassium and phosphorus recovery efficiencies reached 98.05 % and 99.40 %, respectively, under the following conditions: pH 10, rotation speed of 500 rpm, Mg:K:P molar ratio of 2:1:2, and seed dosage of 5 g/L. Under these conditions, all three organics had an effect on crystallization, with the order of inhibition being sodium alginate &gt; bovine serum albumin &gt; humic acid. Characterization analysis revealed that these organic compounds formed hydrogen bonds with functional groups or complexes with Mg<sup>2+</sup> on the crystal surface, hindering crystal growth and modifying crystal morphology. Finally, when liquid digestate was used as the influent for crystallization reaction, removal of organic pollutants led to significant increase in the potassium recovery efficiency.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"279 ","pages":"Article 121758"},"PeriodicalIF":7.7000,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Organic matter removal mitigates crystallization inhibition to enhance co-recovery of potassium and phosphorus from wastewater\",\"authors\":\"Jing Yang ,&nbsp;Li Chen ,&nbsp;Liqiong Yang ,&nbsp;Xinru Jiang ,&nbsp;Liangwei Deng ,&nbsp;Xiaoyu Tang ,&nbsp;Wenguo Wang\",\"doi\":\"10.1016/j.envres.2025.121758\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Magnesium potassium phosphate (MPP) hexahydrate crystallization is a promising approach for the simultaneous recovery of potassium and phosphorus. However, organic matter in the wastewater affects the formation of crystals, which reduces the recovery efficiency. This study constructed the optimal conditions for the formation of MPP crystals, on the basis of which the mechanism of the effect of different types of organic matter on crystallization. The results showed that the using MgCl<sub>2</sub> as the magnesium source, potassium and phosphorus recovery efficiencies reached 98.05 % and 99.40 %, respectively, under the following conditions: pH 10, rotation speed of 500 rpm, Mg:K:P molar ratio of 2:1:2, and seed dosage of 5 g/L. Under these conditions, all three organics had an effect on crystallization, with the order of inhibition being sodium alginate &gt; bovine serum albumin &gt; humic acid. Characterization analysis revealed that these organic compounds formed hydrogen bonds with functional groups or complexes with Mg<sup>2+</sup> on the crystal surface, hindering crystal growth and modifying crystal morphology. Finally, when liquid digestate was used as the influent for crystallization reaction, removal of organic pollutants led to significant increase in the potassium recovery efficiency.</div></div>\",\"PeriodicalId\":312,\"journal\":{\"name\":\"Environmental Research\",\"volume\":\"279 \",\"pages\":\"Article 121758\"},\"PeriodicalIF\":7.7000,\"publicationDate\":\"2025-04-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Research\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0013935125010096\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Research","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0013935125010096","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0

摘要

磷酸镁钾(MPP)六水结晶法是一种很有前途的同时回收钾磷的方法。但废水中的有机物影响结晶体的形成,降低了回收效率。本研究构建了MPP晶体形成的最佳条件,并在此基础上探讨了不同类型有机物对结晶影响的机理。结果表明,以MgCl2为镁源,在pH为10、转速为500 rpm、Mg:K:P摩尔比为2:1:2、种子投加量为5 g/L的条件下,钾和磷的回收率分别达到98.05%和99.40%。在此条件下,3种有机物均对结晶有抑制作用,抑制作用顺序为海藻酸钠>;牛血清白蛋白;胡敏酸。表征分析表明,这些有机化合物在晶体表面与官能团形成氢键或与Mg2+形成配合物,阻碍了晶体生长,改变了晶体形态。最后,当液体消化液作为结晶反应的进水时,有机污染物的去除导致钾的回收效率显著提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Organic matter removal mitigates crystallization inhibition to enhance co-recovery of potassium and phosphorus from wastewater

Organic matter removal mitigates crystallization inhibition to enhance co-recovery of potassium and phosphorus from wastewater
Magnesium potassium phosphate (MPP) hexahydrate crystallization is a promising approach for the simultaneous recovery of potassium and phosphorus. However, organic matter in the wastewater affects the formation of crystals, which reduces the recovery efficiency. This study constructed the optimal conditions for the formation of MPP crystals, on the basis of which the mechanism of the effect of different types of organic matter on crystallization. The results showed that the using MgCl2 as the magnesium source, potassium and phosphorus recovery efficiencies reached 98.05 % and 99.40 %, respectively, under the following conditions: pH 10, rotation speed of 500 rpm, Mg:K:P molar ratio of 2:1:2, and seed dosage of 5 g/L. Under these conditions, all three organics had an effect on crystallization, with the order of inhibition being sodium alginate > bovine serum albumin > humic acid. Characterization analysis revealed that these organic compounds formed hydrogen bonds with functional groups or complexes with Mg2+ on the crystal surface, hindering crystal growth and modifying crystal morphology. Finally, when liquid digestate was used as the influent for crystallization reaction, removal of organic pollutants led to significant increase in the potassium recovery efficiency.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Environmental Research
Environmental Research 环境科学-公共卫生、环境卫生与职业卫生
CiteScore
12.60
自引率
8.40%
发文量
2480
审稿时长
4.7 months
期刊介绍: The Environmental Research journal presents a broad range of interdisciplinary research, focused on addressing worldwide environmental concerns and featuring innovative findings. Our publication strives to explore relevant anthropogenic issues across various environmental sectors, showcasing practical applications in real-life settings.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信