Evaluation of mineral barriers against acid rock drainage

Angelica Naka; Takeshi Katsumi; Giancarlo Flores; Toru Inui; Takehiro Ohta; Takuya Urakoshi; Tomokazu Ishihara

Evaluation of mineral barriers against acid rock drainage

Angelica Naka
, Takeshi Katsumi
, Giancarlo Flores
, Toru Inui
, Takehiro Ohta
, Takuya Urakoshi
, Tomokazu Ishihara

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The barrier performance of geosynthetic clay liners (GCLs) containing Na-bentonite, zeolite, and ferrihydrate against acid rock drainage (ARD) was evaluated through hydraulic conductivity and sorption tests in order to determine their applicability as adsorption layers in waste rock containment facilities. The hydraulic conductivity (k) of GCL permeated with water was 1.4 × 10^-11 m/s and this increased by one order of magnitude with ARDpermeation (k= 5.0 × 10^-10 m/s). The k of zeolite permeated with water was 3.0 × 10^-10 m/s and this also increased withARD permeation (k = 1.4 × 10^-9 m/s). The k value of ferrihydratewas 7.3 × 10^-9 m/s when permeated with water and this remained constant after ARD permeation (k= 8.6 × 10^-9 m/s). Metal sorption of bentonite, zeolite, and ferrihydrate were different in terms of sorption capacity and selectivity, which can be summarized as follows: bentonite: Cu>Fe>Zn>Al>As>Pb, zeolite: Cu>Fe>Zn>Pb≈ Al≈As, and ferrihydrate: Cu>Zn>Al>As>Pb. According to experimental results, the tree minerals appear to be good candidates for ARD mitigation.

Original language	English
Pages (from-to)	35-42
Number of pages	8
Journal	Geotechnical Engineering
Volume	43
Issue number	3
State	Published - Sep 2012
Externally published	Yes

Cite this

@article{1962ac22fc2142fdb2c4eae7d1e941aa,

title = "Evaluation of mineral barriers against acid rock drainage",

abstract = "The barrier performance of geosynthetic clay liners (GCLs) containing Na-bentonite, zeolite, and ferrihydrate against acid rock drainage (ARD) was evaluated through hydraulic conductivity and sorption tests in order to determine their applicability as adsorption layers in waste rock containment facilities. The hydraulic conductivity (k) of GCL permeated with water was 1.4 × 10-11 m/s and this increased by one order of magnitude with ARDpermeation (k= 5.0 × 10-10 m/s). The k of zeolite permeated with water was 3.0 × 10-10 m/s and this also increased withARD permeation (k = 1.4 × 10-9 m/s). The k value of ferrihydratewas 7.3 × 10-9 m/s when permeated with water and this remained constant after ARD permeation (k= 8.6 × 10-9 m/s). Metal sorption of bentonite, zeolite, and ferrihydrate were different in terms of sorption capacity and selectivity, which can be summarized as follows: bentonite: Cu>Fe>Zn>Al>As>Pb, zeolite: Cu>Fe>Zn>Pb≈ Al≈As, and ferrihydrate: Cu>Zn>Al>As>Pb. According to experimental results, the tree minerals appear to be good candidates for ARD mitigation.",

author = "Angelica Naka and Takeshi Katsumi and Giancarlo Flores and Toru Inui and Takehiro Ohta and Takuya Urakoshi and Tomokazu Ishihara",

year = "2012",

month = sep,

language = "English",

volume = "43",

pages = "35--42",

journal = "Geotechnical Engineering",

issn = "0046-5828",

number = "3",

}

TY - JOUR

T1 - Evaluation of mineral barriers against acid rock drainage

AU - Naka, Angelica

AU - Katsumi, Takeshi

AU - Flores, Giancarlo

AU - Inui, Toru

AU - Ohta, Takehiro

AU - Urakoshi, Takuya

AU - Ishihara, Tomokazu

PY - 2012/9

Y1 - 2012/9

N2 - The barrier performance of geosynthetic clay liners (GCLs) containing Na-bentonite, zeolite, and ferrihydrate against acid rock drainage (ARD) was evaluated through hydraulic conductivity and sorption tests in order to determine their applicability as adsorption layers in waste rock containment facilities. The hydraulic conductivity (k) of GCL permeated with water was 1.4 × 10-11 m/s and this increased by one order of magnitude with ARDpermeation (k= 5.0 × 10-10 m/s). The k of zeolite permeated with water was 3.0 × 10-10 m/s and this also increased withARD permeation (k = 1.4 × 10-9 m/s). The k value of ferrihydratewas 7.3 × 10-9 m/s when permeated with water and this remained constant after ARD permeation (k= 8.6 × 10-9 m/s). Metal sorption of bentonite, zeolite, and ferrihydrate were different in terms of sorption capacity and selectivity, which can be summarized as follows: bentonite: Cu>Fe>Zn>Al>As>Pb, zeolite: Cu>Fe>Zn>Pb≈ Al≈As, and ferrihydrate: Cu>Zn>Al>As>Pb. According to experimental results, the tree minerals appear to be good candidates for ARD mitigation.

AB - The barrier performance of geosynthetic clay liners (GCLs) containing Na-bentonite, zeolite, and ferrihydrate against acid rock drainage (ARD) was evaluated through hydraulic conductivity and sorption tests in order to determine their applicability as adsorption layers in waste rock containment facilities. The hydraulic conductivity (k) of GCL permeated with water was 1.4 × 10-11 m/s and this increased by one order of magnitude with ARDpermeation (k= 5.0 × 10-10 m/s). The k of zeolite permeated with water was 3.0 × 10-10 m/s and this also increased withARD permeation (k = 1.4 × 10-9 m/s). The k value of ferrihydratewas 7.3 × 10-9 m/s when permeated with water and this remained constant after ARD permeation (k= 8.6 × 10-9 m/s). Metal sorption of bentonite, zeolite, and ferrihydrate were different in terms of sorption capacity and selectivity, which can be summarized as follows: bentonite: Cu>Fe>Zn>Al>As>Pb, zeolite: Cu>Fe>Zn>Pb≈ Al≈As, and ferrihydrate: Cu>Zn>Al>As>Pb. According to experimental results, the tree minerals appear to be good candidates for ARD mitigation.

UR - https://www.scopus.com/pages/publications/84887085656

M3 - Article

AN - SCOPUS:84887085656

SN - 0046-5828

VL - 43

SP - 35

EP - 42

JO - Geotechnical Engineering

JF - Geotechnical Engineering

IS - 3

ER -

Evaluation of mineral barriers against acid rock drainage

Abstract

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