Application of eco-friendly method for nano-minerals preparation and ground water treatment

被引：7

作者：

Abdel-Gawwad, H. A. ^{[1
,2
]}

Mohamed, Samah A. ^{[3
]}

Mostafa, A. H. ^{[4
]}

机构：

[1] Housing & Bldg Natl Res Ctr HBRC, Raw Bldg Mat Res & Proc Technol Inst, Bldg Mat Chem, Giza, Egypt

[2] ACFA Ind Co, Res & Dev R&D Dept, Riyadh, Saudi Arabia

[3] Housing & Bldg Res Ctr, Saintary & Environm Engn Inst, Microbiol Dept, Giza, Egypt

[4] Housing & Bldg Res Ctr, Saintary & Environm Engn Inst, Giza, Egypt

来源：

ECOLOGICAL ENGINEERING | 2018年 / 119卷

关键词：

Nanoparticle; Crystal structure; Biomaterials; Powders; PDUE; CARBONATE;

D O I：

10.1016/j.ecoleng.2018.05.002

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

This work aims at preparing different nano-minerals using bio-precipitation method (BPM). Nano-calcite (NC), nano-giorgiosite (NG), nano-witherite (NW) have been prepared by the addition of plant-derived urease enzyme (PDUE) to urea/CaCl2, urea/Ca(CH3COO)(2), urea/MgCl2 and urea/BaCl2 solutions, respectively. Nano-Mg-calcite (NMC) was precipitated by dissolving PDUE and urea in ground water (GW). Salt type plays an important role in the morphology, crystallinity, and particle size of nano-minerals. PDUE has higher effectiveness on Ca2+ removal from GW; meanwhile, it has a lower impact on Mg2+ removal. Where, the Ca-hardness varied from 1460 to 20 mg/l after the treatment of GW with PDUE. At the same pH, the Mg-hardness (1833 mg/l) slightly reduced to be 1210 mg/l. By raising pH, using one-molar sodium hydroxide solution, the removal of Mg2+ enhances. The BPM not only used to prepare innovative NMC-mineral from GW, but also applied to reduce GW-hardness.

引用

页码：29 / 34

页数：6

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