Low-Cost Technologies for Mining Wastewater Treatment

Acheampong, Mike A.; Ansa, E.D.O.

doi:10.17265/2162-5263/2017.08.001

Cited by 7 publications

(10 citation statements)

References 77 publications

(101 reference statements)

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“…This study demonstrated high removals for Cd and other metals in the pilot-scale CWs, especially in that planted with cattails (CW-B), from the NMD of A-Mine (Figures 3 and 4). The HRT of CWs for mine drainage treatment is typically a few days to several weeks [3,5]. However, in this study, HRT of 1.25 days was sufficient for Cd removal from the NMD without severe clogging.…”

Section: Discussionmentioning

confidence: 68%

“…Among them, approximately 80 mines with absent owners must treat mine drainage continuously despite a lack of production, which has imposed large economic burdens on national and local governments for over a hundred years [2]. A promising alternative as a passive technology for mine drainage treatment is constructed wetlands (CWs) because of their simple operation, low cost, and moderate effectiveness [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Mechanisms of heavy metal removal in CWs are quite complicated, involving various processes such as precipitation, absorption, filtration, complexation, microbiological activity, and plant uptake [3][4][5][6]. Wetland plant species show considerable variations in metal uptake and translocation abilities through phytoextraction [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Cattails and Hydraulic Loading on Heavy Metal Removal from Closed Mine Drainage by Pilot-Scale Constructed Wetlands

Nguyen

Soda

Kanayama

et al. 2021

Water

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This study demonstrated heavy metal removal from neutral mine drainage of a closed mine in Kyoto prefecture in pilot-scale constructed wetlands (CWs). The CWs filled with loamy soil and limestone were unplanted or planted with cattails. The hydraulic retention time (HRT) in the CWs was shortened gradually from 3.8 days to 1.2 days during 3.5 months of operation. A short HRT of 1.2 days in the CWs was sufficient to achieve the effluent standard for Cd (0.03 mg/L). The unplanted and the cattail-planted CWs reduced the average concentrations of Cd from 0.031 to 0.01 and 0.005 mg/L, Zn from 0.52 to 0.14 and 0.08 mg/L, Cu from 0.07 to 0.04 and 0.03 mg/L, and As from 0.011 to 0.006 and 0.006 mg/L, respectively. Heavy metals were removed mainly by adsorption to the soil in both CWs. The biological concentration factors in cattails were over 2 for Cd, Zn, and Cu. The translocation factors of cattails for all metals were 0.5–0.81. Sulfate-reducing bacteria (SRB) belonging to Deltaproteobacteria were detected only from soil in the planted CW. Although cattails were a minor sink, the plants contributed to metal removal by rhizofiltration and incubation of SRB, possibly producing sulfide precipitates in the rhizosphere.

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Section: Discussionmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Cattails and Hydraulic Loading on Heavy Metal Removal from Closed Mine Drainage by Pilot-Scale Constructed Wetlands

Nguyen

Soda

Kanayama

et al. 2021

Water

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“…9 Many ores, mining precious metals, such as gold (Au), copper (Cu), 10 arsenic (As), mercury (Hg), cyanide, and uranium (U), contain high amounts of the poisonous metalloid ions. 11–13 For example, arsenic in most cases comes from mine exploitation, as well as excavating, and regularly has connections to treasured minerals, including sphalerite, pyrite, and chalcopyrite. 14 Arsenic generally dissolves during manufacture and then seeps into groundwater.…”

Section: Introductionmentioning

confidence: 99%

Global research progress on mining wastewater treatment: a bibliometric analysis

Zahoor

Mao

Jia

et al. 2022

Environ. Sci.: Adv.

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“…Constructed wetlands (CWs) have been recognized as a potential green technology for mine drainage treatment. In fact, they have gained great attention worldwide because of their effectiveness, low cost, simple maintenance, and high biodiversity value [8][9][10]. The substrate serves an important role in heavy metal removal in CWs [10,11].…”

Section: Introductionmentioning

confidence: 99%

Removal of Heavy Metals from Acid Mine Drainage with Lab-Scale Constructed Wetlands Filled with Oyster Shells

Nguyen

Soda

Horiuchi

2022

Water

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The present study investigated the applicability of constructed wetlands (CWs) filled with oyster shells (OSs) for removing heavy metals from acid mine drainage (AMD). Lab-scale CWs consisted of columns (ID 12.5 cm, H 50 cm) packed with OSs or limestone, which were left unplanted or planted with cattails. Synthetic and real AMD containing 7.3 mg/L of Zn, 38.0 mg/L of Fe, and other minerals (pH = 4.0) were fed to the CWs (1 L/column) under a hydraulic retention time of 7 days in a sequencing batch mode. The effluent pH values of the CWs reached 6.9–8.3. Results show that OSs with high CaCO3 contents had higher neutralizing capability for AMD than limestone had. During 7 months of operation, all CWs were highly effective for removing Zn (88.6–99.2%); Fe (98.7–99.7%); and Cd, Cu, Pb, As, and Mn (48.2–98.9%) from both real and synthetic AMD. The mass balance in the CWs indicated accumulation in OSs or limestone as a main pathway for removing heavy metals, representing 44.8–99.3% of all metals, followed by biomass (8.8–29.9%) in the planted CWs. Other processes examined for this study only played a minor role in removing heavy metals. The higher metal treatment performance of OS CWs demonstrated the value of this aquaculture byproduct as a CW substrate.

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Low-Cost Technologies for Mining Wastewater Treatment

Cited by 7 publications

References 77 publications

Effects of Cattails and Hydraulic Loading on Heavy Metal Removal from Closed Mine Drainage by Pilot-Scale Constructed Wetlands

Effects of Cattails and Hydraulic Loading on Heavy Metal Removal from Closed Mine Drainage by Pilot-Scale Constructed Wetlands

Global research progress on mining wastewater treatment: a bibliometric analysis

Removal of Heavy Metals from Acid Mine Drainage with Lab-Scale Constructed Wetlands Filled with Oyster Shells

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