Removal of Heavy Metals from Waste Waters by Natural and Na-Exchanged Bentonites

被引:0
作者
E. Álvarez-Ayuso
A. García-Sánchez
机构
[1] IRNASA,Department of Environmental Geochemistry
[2] CSIC,undefined
来源
Clays and Clay Minerals | 2003年 / 51卷
关键词
Bentonite; Heavy Metals; Purification; Sorption; Waste Waters;
D O I
暂无
中图分类号
学科分类号
摘要
Batch sorption studies of Cr(III), Ni(II), Zn(II), Cu(II) and Cd(II) were conducted on Ca-bentonite and Na-bentonite to determine their retention capacities for these metal cations commonly present in the waste waters of galvanic industries. The Langmuir model was found to describe the sorption process well, offering maximum sorption capacities of 44.4 mg Cr/g, 6.32 mg Ni/g, 5.75 mg Zn/g, 7.72 mg Cu/g, 7.28 mg Cd/g on Ca-bentonite and 49.8 mg Cr/g, 24.2 mg Ni/g, 23.1 mg Zn/g, 30.0 mg Cu/g, 26.2 mg Cd/g on Na-bentonite. The use of Na-bentonite in the purification of waste waters from Ni, Cr and acid-Zn electroplating processes was an effective treatment in small-scale and in semi-industrial-scale tests. This proves the worth of this method as an alternative to existing methods. In contrast, Nabentonite was not effective in Zn sorption from cyanide-containing waste waters.
引用
收藏
页码:475 / 480
页数:5
相关论文
共 50 条
[31]   HEAVY METALS REMOVAL FROM MINING DRAINAGE ACID WATER BY USE OF NATURAL ZEOLITES [J].
Szollosi-Mota, Andrei ;
Prodan, Maria ;
Ghicioi, Emilian ;
Nalboc, Irina ;
Moldovan, Clementina .
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL, 2017, 16 (06) :1383-1388
[32]   Heavy metal removal from waste waters by phosphonate metal organic frameworks [J].
Maranescu, Bianca ;
Lupa, Lavinia ;
Visa, Aurelia .
PURE AND APPLIED CHEMISTRY, 2018, 90 (01) :35-47
[33]   APPLICATION OF NATURAL CLINOPTILOLITE FOR HEAVY METALS REDUCING IN WATERS [J].
Pandova, Iveta ;
Oravec, Peter ;
Radvansk, Agta .
GEOCONFERENCE ON ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION, VOL II, 2014, :33-38
[34]   REMOVAL OF HEAVY METALS FROM WINERY WASTEWATER BY USING NATURAL ADSORBENTS [J].
Mahajan, Chetan S. ;
Sarode, Dhananjay B. ;
Jadhav, Ramanand N. ;
Attarde, Sanjay B. ;
Ingle, Sopan T. .
INTERNATIONAL JOURNAL OF CONSERVATION SCIENCE, 2014, 5 (01) :69-78
[35]   Heavy metals in the Rosetta estuary of the Nile and the adjoining Mediterranean waters: evidence of removal of dissolved heavy metals from waters as a result of possible binding to suspended matter [J].
Saad, MAH ;
Hassan, EM .
HYDROBIOLOGIA, 2002, 469 (1-3) :131-147
[36]   Heavy metals in the Rosetta estuary of the Nile and the adjoining Mediterranean waters: evidence of removal of dissolved heavy metals from waters as a result of possible binding to suspended matter [J].
Massoud A. H. Saad ;
Ehsan M. Hassan .
Hydrobiologia, 2002, 469 :131-147
[37]   The electrocoagulation/flotation study: The removal of heavy metals from the waste fountain solution [J].
Prica, Miljana ;
Adamovic, Savka ;
Dalmacija, Bozo ;
Rajic, Ljiljana ;
Trickovic, Jelena ;
Rapajic, Sanja ;
Becelic-Tomin, Milena .
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION, 2015, 94 :262-273
[38]   Re-evaluation of several heavy metals removal by natural limestones [J].
Ali Sdiri ;
Samir Bouaziz .
Frontiers of Chemical Science and Engineering, 2014, 8 :418-432
[39]   Effects of impurities on the removal of heavy metals by natural limestones in aqueous systems [J].
Sdiri, Ali ;
Higashi, Teruo ;
Jamoussi, Fakher ;
Bouaziz, Samir .
JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2012, 93 (01) :245-253
[40]   Re-evaluation of several heavy metals removal by natural limestones [J].
Sdiri, Ali ;
Bouaziz, Samir .
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING, 2014, 8 (04) :418-432