One-step disposal of Cr (VI)-bearing wastewater by natural pyrrhotite

doi:10.1007/BF02886224

CORC > 北京大学 > 地球与空间科学学院

	One-step disposal of Cr (VI)-bearing wastewater by natural pyrrhotite
	Lu, AH ; Chen, J ; Shi, JX ; Lu, XY ; Tang, JL ; Guo, M
刊名	科学通报英文版
	2000
关键词	natural pyrrhotite Cr(VI)-bearing wastewater reduction Cr(VI) precipitation Cr(III) one-step disposal rational use of mineral resources ADSORPTION CR(VI) CHROMIUM(VI) REDUCTION MINERALS SOIL
DOI	10.1007/BF02886224
英文摘要	Cr(VI)-bearing wastewater can be treated by natural pyrrhotite which is used for reductant to reduce Cr(VI) and precipitant to precipitate Cr(LU) simultaneously. The disposal products can be divided into three parts in the beakers, namely supernatant in the upper part, the yellowish colloidal precipitates in the middle part and the pyrrhotite in the lower part. The content of total Cr=Cr(VI)+Cr(LU) in the supernatant liquid is 0.06 mg/L, which is lower than 1.5 mg/L ct the discharge standard of China and near to 0.05 mg/L of the standard of potable water. This one-step disposal composing ct both reduction and precipitation which is traditionally divided into two independent steps called reducing technology and precipitating technology respectively. The new method is of obvious economic advantage and favourable to decreasing surplus mud derived from adding Ca(OH)(2) to precipitate Cr(LU) traditionally so as to avoid recontamination. In fact, sodium sulfite (Na2SO3) used in disposal of Cr(VI) was traditionally produced from natural mineral of pyrrhotite (FeS). One molecule of FeS is 4 times more than that of Na2SO3 from a view point of rational use of mineral resources. Therefore the prospective of application of the one-step disposal of Cr(VI) method is full of promise.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000089247900016&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Multidisciplinary Sciences; SCI(E); 4; ARTICLE; 17; 1614-1616; 45
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/155486]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Lu, AH,Chen, J,Shi, JX,et al. One-step disposal of Cr (VI)-bearing wastewater by natural pyrrhotite[J]. 科学通报英文版,2000.
APA	Lu, AH,Chen, J,Shi, JX,Lu, XY,Tang, JL,&Guo, M.(2000).One-step disposal of Cr (VI)-bearing wastewater by natural pyrrhotite.科学通报英文版.
MLA	Lu, AH,et al."One-step disposal of Cr (VI)-bearing wastewater by natural pyrrhotite".科学通报英文版 (2000).