Enhanced leaching of manganese from low-grade pyrolusite using ball milling and electric field

doi:10.1016/j.ecoenv.2021.111893

	Enhanced leaching of manganese from low-grade pyrolusite using ball milling and electric field
	Luo, Zhenggang 1; Shu, Jiancheng 1; Chen, Mengjun 1; Wang, Rong 1; Zeng, Xiangfei 1; Yang, Yong 2; Wang, Rui 1; Chen, Shuyuan 1; Liu, Renlong 2; Liu, Zuohua 2
刊名	ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
	2021-03-15
卷号	211 页码:9
关键词	Mn2+ Low-grade pyrolusite Ball milling Electric field Enhanced leaching
ISSN号	0147-6513
DOI	10.1016/j.ecoenv.2021.111893
英文摘要	In this study, electric field and ball milling were used to leach Mn2+ from low-grade pyrolusite (LGP). The effects of current density, reaction time, reaction temperature, ball-to-powder weight ratio, and ball milling time on the leaching efficiency of Mn2+ from LGP as well as the leaching mechanism were systematically studied. The results showed that the combined use of electric field and ball milling enhanced the leaching of Mn2+ from LGP. The leaching efficiency of Mn2+ reached 97.79% under the optimum conditions of LGP-to-pyrite mass ratio of 1:0.18, current density of 30 mA/cm2, LGP-to-H2SO4 mass ratio of 1:0.4, liquid-to-solid ratio of 5:1, ball-to-powder weight ratio of 1:1, ball milling time of 2 h, temperature of 80 degrees C, and leaching duration of 120 min. This value was 25.95% higher than that attained without ball milling and 41.45% higher than that attained when neither ball milling nor electric field was employed. Pyrite was fully oxidized to generate additional SO42- and Fe3+, and was further hydrolyzed to form jarosite (KFe3(SO4)(2)(OH)(6)) and hydronium jarosite (Fe-3(SO4)(2)(OH)(5)center dot 2H(2)O) via ball milling and electric field application. Moreover, the electric field changed the surface charge distribution of the mineral particles and promoted collisions between them as well as the collapse of the crystal lattice, further improving the leaching efficiency of Mn2+ from LGP. This study provided a new method for leaching Mn from LGP.
资助项目	National Key R&D Program of China[2018YFC1903500] ; National Natural Science Foundation of China[21806132] ; Science and Technology Program of Guizhou ProvinceChina[[2019]2863] ; Key research and development project of science and technology department of Sichuan province, China[2021YFH0058] ; Sichuan Province Science and Technology plan-Key Research and Development[19ZDYF0911] ; Science and Technology Project of Mianyang City, Sichuan Province[2019YFZJ014] ; Key R&D Program of Guangxi Province[AB18126088]
WOS研究方向	Environmental Sciences & Ecology ; Toxicology
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000617779000005
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Science and Technology Program of Guizhou ProvinceChina ; Key research and development project of science and technology department of Sichuan province, China ; Sichuan Province Science and Technology plan-Key Research and Development ; Science and Technology Project of Mianyang City, Sichuan Province ; Key R&D Program of Guangxi Province
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/43619]
专题	中国科学院过程工程研究所
通讯作者	Shu, Jiancheng
作者单位	1.Southwest Univ Sci & Technol, Key Lab Solid Waste Treatment & Resource Recycle, Minist Educ, 59 Qinglong Rd, Mianyang 621010, Sichuan, Peoples R China 2.Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 4.China Natl Resources Recycling Assoc, 13 Yuetanbeixiaojie, Beijing 100037, Peoples R China 5.Minist Ecol Environm, Solid Waste & Chem Management Technol Ctr, Beijing 100000, Peoples R China
推荐引用方式 GB/T 7714	Luo, Zhenggang,Shu, Jiancheng,Chen, Mengjun,et al. Enhanced leaching of manganese from low-grade pyrolusite using ball milling and electric field[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2021,211:9.
APA	Luo, Zhenggang.,Shu, Jiancheng.,Chen, Mengjun.,Wang, Rong.,Zeng, Xiangfei.,...&Deng, Yi.(2021).Enhanced leaching of manganese from low-grade pyrolusite using ball milling and electric field.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,211,9.
MLA	Luo, Zhenggang,et al."Enhanced leaching of manganese from low-grade pyrolusite using ball milling and electric field".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 211(2021):9.