scholarly journals Simultaneous removal of arsenic and toxic metals from contaminated soil: Laboratory development and pilot scale demonstration

2022 ◽  
Vol 294 ◽  
pp. 118656
Author(s):  
Juan Francisco Morales Arteaga ◽  
Simon Gluhar ◽  
Anela Kaurin ◽  
Domen Lestan
2017 ◽  
Vol 47 (2) ◽  
pp. 992 ◽  
Author(s):  
V. Zotiadis ◽  
A. Argyraki

In this paper we present a series of laboratory and field, pilot- scale applications of attapulgite clay as an amendment for the stabilization of metals in contaminated soil and sewage sludge. Attapulgite’s structure together with its fine particle size and fibrous habit are responsible for its high specific surface area and sorption properties. A pilot scale application of attapulgite clay as a binder for in situ stabilization of toxic metals in contaminated land showed significant reduction in the water leachable metal fraction (Cu: 17%, Pb: 50%, Zn: 45%, Cd: 41%, Ag: 46%, As: 18%, Mn: 47%, Ba: 45%, Sb: 29%). In a second pilot scale environmental application, an innovative attapulgite “Geosynthetic Reactive Clay - GRC” was designed and developed for “capping” and “stabilization”of toxic metals in contaminated soil. Also, laboratory scale experiments with fresh sewage sludge from a municipal water treatment plant showed that addition of attapulgite clay in sludge, significantly reduced the leachable concentrations of phenol, DOC, Hg, Cu, Mo, Pb, Se, As, Zn and pathogen population over a 4 weeks observation period. The developed soil remediation techniques are promising and cost-effective under present market conditions. Concerning treatment of sewage sludge, attapulgite clay is an effective additive that could enhance the composting procedure creating an environmental added value, final compost product.


Author(s):  
Yingming Guo ◽  
Ben Ma ◽  
Jianxiong Huang ◽  
Jing Yang ◽  
Ruifeng Zhang

Abstract The iron and manganese oxide filter film (MeOx) were used to research the simultaneous removal of bisphenol A (BPA), manganese (Mn2+) and ammonium (NH4+) in a pilot-scale filter system. We found that 0.52 mg/L of BPA could be removed while consuming 5.44 mg/L of dissolved oxygen (DO). Since the oxidation process of NH4+ and BPA both consume the DO in water, the presence of NH4+ can hinder the removal of BPA. The presence of Mn2+ in water had a synergy effect on the BPA removal. The filter film was characterized by SEM, XRD and XPS. Some substances were generated to block the pores of the oxide film, and a small amount of film was found to crack and fall off. The elemental composition of C and O were both increased by about 9%, the composition of Mn was decreased from 63.48% to 44.55%, and the reduced manganese substance might affect the activity of the oxide film. The main chemical forms of MeOx are Mn6O12·3H2O, MnFe2O4 or Mn3O4. The decrease in the removal efficiency of BPA was mainly due to the C-containing intermediate [−CH2C − H(OH)]n covering the surface of the oxide film and blocking the pore size of the film.


2019 ◽  
Vol 53 (4) ◽  
pp. 2045-2053 ◽  
Author(s):  
Wen Song ◽  
Julia E. Vidonish ◽  
Roopa Kamath ◽  
Pingfeng Yu ◽  
Chun Chu ◽  
...  

2016 ◽  
Vol 4 (5) ◽  
pp. 1737-1746 ◽  
Author(s):  
Jie Li ◽  
Qiaohui Fan ◽  
Yijin Wu ◽  
Xiangxue Wang ◽  
Changlun Chen ◽  
...  

A novel MPL bifunctional material fabricated by an easy and green approach was applied for the simultaneous removal of potentially toxic metals and anionic dyes.


2015 ◽  
Vol 142 ◽  
pp. 328-336 ◽  
Author(s):  
Subhamoy Bhowmick ◽  
Amit Kumar Kundu ◽  
Jishnu Adhikari ◽  
Debankur Chatterjee ◽  
Monica Iglesias ◽  
...  

RSC Advances ◽  
2015 ◽  
Vol 5 (11) ◽  
pp. 8190-8193 ◽  
Author(s):  
Feng Xiao ◽  
Liping Fang ◽  
Wentao Li ◽  
Dongsheng Wang

Aluminum magnesium oxide nanocomposites were prepared using a one-step microwave assisted solvothermal method, and showed high adsorption capacities for the removal of both As(v) and Pb(ii) ions in water.


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