Municipal green waste promotes iron release from steelmaking slag in water

被引：1
|
作者：
Yu, Dan [1 ,2 ]
Liu, Fei [3 ]
Zou, Changdong [3 ]
Yang, Xiao [1 ,2 ]
机构：
[1] Westlake Univ, Key Lab Coastal Environm & Resources Zhejiang Prov, Sch Engn, 18 Shilongshan Rd, Hangzhou 310024, Zhejiang, Peoples R China
[2] Westlake Inst Adv Study, Inst Adv Technol, 18 Shilongshan Rd, Hangzhou 310024, Zhejiang, Peoples R China
[3] Inst Res Iron & Steel, Jiangsu Prov Shasteel IRIS, Zhangjiagang 215625, Jiangsu, Peoples R China
来源：
RESOURCES CONSERVATION AND RECYCLING | 2023年 / 188卷
关键词：
Seaweeds; Steelmaking slag; Iron; Tangerine peel; Flavonoids; DISSOLUTION BEHAVIOR; ELEMENTS; COMPLEXES; SEAWATER; ELUTION; FERTILIZATION; COMPONENTS; MECHANISM; OCEAN; ACID;
D O I：
10.1016/j.resconrec.2022.106722
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Shortage of soluble Fe in seawater is a limiting condition for benthic seaweeds growth. Utilizing steelmaking slag as the Fe source for seaweeds growth has been proposed. Aiming to find a cost-effective method to promote Fe release, we investigate the effect of adding municipal green wastes. By conducting leaching experiments in freshwater, a sharp improvement in Fe release was observed with the addition of tangerine peel together with steelmaking slag. The flavonoids supplied from the tangerine peel, vicenin-2, apigenin, hesperidin, vitexin, hesperetin and diosmin were observed to have a promotion effect on Fe release. Formation of stable flavonoid-Fe (II) chelates changes the thermodynamic property of Fe(II) in water and disturbs the equilibrium between Fe(II) in slag and Fe(II) in water, which promotes Fe release from slag. These results demonstrate the feasibility to develop a technology for Fe supply in seawater by utilizing the mixture of steelmaking slag and municipal green wastes.
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页数：10
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