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Comprehensive evaluation of adsorption performances of carbonaceous materials for sulfonamide antibiotics removal.

Author(s): Luo B, Huang G, Yao Y, An C, Li W, Zheng R, Zhao K

Sulfonamide antibiotics have highly toxic effects on humans and other organisms within the food chain. Adsorption by various carbonaceous materials is an effective method for removing them from the aqueous environment. Batch adsorption experiments were cond...

Article GUID: 32886308
Quantifying construction waste reduction through the application of prefabrication: a case study in Anhui, China.

Author(s): Hao J, Chen Z, Zhang Z, Loehlein G

Environ Sci Pollut Res Int. 2020 May 01;: Authors: Hao J, Chen Z, Zhang Z, Loehlein G

Article GUID: 32358748
Performance analysis and life cycle greenhouse gas emission assessment of an integrated gravitational-flow wastewater treatment system for rural areas.

Author(s): Song P, Huang G, An C, Zhang P, Chen X, Ren S

Environ Sci Pollut Res Int. 2019 Jul 04;: Authors: Song P, Huang G, An C, Zhang P, Chen X, Ren S

Article GUID: 31273662
Pilot-scale application of a single-stage hybrid airlift BioCAST bioreactor for treatment of ammonium from nitrite-limited wastewater by a partial nitrification/anammox process.

Author(s): Saborimanesh N, Walsh D, Yerushalmi L, Arriagada EC, Mulligan CN

Environ Sci Pollut Res Int. 2019 Jul 02;: Authors: Saborimanesh N, Walsh D, Yerushalmi L, Arriagada EC, Mulligan CN

Article GUID: 31267396
An eco-friendly method for heavy metal removal from mine tailings.

Author(s): Arab F, Mulligan CN

Environ Sci Pollut Res Int. 2018 Jun;25(16):16202-16216 Authors: Arab F, Mulligan CN

Article GUID: 29594884
Evaluating a 5-year metal contamination remediation and the biomonitoring potential of a freshwater gastropod along the Xiangjiang River, China.

Author(s): Li D, Pi J, Zhang T, Tan X, Fraser DJ

Environ Sci Pollut Res Int. 2018 Jul;25(21):21127-21137 Authors: Li D, Pi J, Zhang T, Tan X, Fraser DJ

Article GUID: 29770938
Title:An eco-friendly method for heavy metal removal from mine tailings.
Authors:Arab F,  Mulligan CN
Link:https://www.ncbi.nlm.nih.gov/pubmed/29594884?dopt=Abstract
Category:Environ Sci Pollut Res Int
PMID:29594884
Dept Affiliation: ENCS
1 Department of Building, Civil, and Environmental Engineering, Concordia University, Montreal, Quebec, Canada.
2 Department of Building, Civil, and Environmental Engineering, Concordia University, Montreal, Quebec, Canada. mulligan@civil.concordia.ca.

Description:

An eco-friendly method for heavy metal removal from mine tailings.

Environ Sci Pollut Res Int. 2018 Jun;25(16):16202-16216

Authors: Arab F, Mulligan CN

Abstract

One of the serious environmental problems that society is facing today is mine tailings. These byproducts of the process of extraction of valuable elements from ores are a source of pollution and a threat to the environment. For example, mine tailings from past mining activities at Giant Mines, Yellowknife, are deposited in chambers, stopes, and tailing ponds close to the shores of The Great Slave Lake. One of the environmentally friendly approaches for removing heavy metals from these contaminated tailing is by using biosurfactants during the process of soil washing. The objective of this present study is to investigate the effect of sophorolipid (SL) concentration, the volume of washing solution per gram of medium, pH, and temperature on the efficiency of sophorolipids in removing heavy metals from mine tailings. It was found that the efficiency of the sophorolipids depends on its concentration, and is greatly affected by changes in pH, and temperature. The results of this experiment show that increasing the temperature from 15 to 23 °C, while using sophorolipids, resulted in an increase in the removal of iron, copper, and arsenic from the mine tailing specimen, from 0.25, 2.1, and 8.6 to 0.4, 3.3, and 11.7%. At the same time, increasing the temperature of deionized water (DIW) from 15 to 23 °C led to an increase in the removal of iron, copper, and arsenic from 0.03, 0.9, and 1.8 to 0.04, 1.1, and 2.1%, respectively. By increasing temperature from 23 to 35 °C, when using sophorolipids, 22% reduction in the removal of arsenic was observed. At the same time while using DI water as the washing solution, increasing temperature from 23 to 35 °C resulted in 6.2% increase in arsenic removal. The results from this present study indicate that sophorolipids are promising agents for replacing synthetic surfactants in the removal of arsenic and other heavy metals from soil and mine tailings.

PMID: 29594884 [PubMed - indexed for MEDLINE]