ORCID Profile
0000-0001-6267-1457
Current Organisations
University of Technology Sydney
,
Korea Institute of Civil Engineering and Building Technology
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Publisher: Elsevier BV
Date: 2017
Publisher: Informa UK Limited
Date: 05-05-2015
Publisher: Elsevier BV
Date: 2012
Publisher: Elsevier BV
Date: 04-2020
Publisher: Elsevier BV
Date: 03-2019
DOI: 10.1016/J.CHEMOSPHERE.2018.11.153
Abstract: Acid mine drainage (AMD), an acidic effluent characterized by high concentrations of sulfate and heavy metals, is an environmental and economic concern. The performance of an integrated submerged direct contact membrane distillation (DCMD) - zeolite sorption system for AMD treatment was evaluated. The results showed that modified (heat treated) zeolite achieved 26-30% higher removal of heavy metals compared to natural untreated zeolite. Heavy metal sorption by heat treated zeolite followed the order of Fe > Al > Zn > Cu > Ni and the data fitted well to Langmuir and pseudo second order kinetics model. Slight pH adjustment from 2 to 4 significantly increased Fe and Al removal rate (close to 100%) due to a combination of sorption and partial precipitation. An integrated system of submerged DCMD with zeolite for AMD treatment enabled to achieve 50% water recovery in 30 h. The integrated system provided a favourable condition for zeolite to be used in powder form with full contact time. Likewise, heavy metal removal from AMD by zeolite, specifically Fe and Al, mitigated membrane fouling on the surface of the hollow fiber submerged membrane. The integrated system produced high quality fresh water while concentrating sulfuric acid and valuable heavy metals (Cu, Zn and Ni).
Publisher: Elsevier BV
Date: 04-2019
DOI: 10.1016/J.ENVPOL.2019.01.085
Abstract: Acid mine drainage (AMD) is a global environmental issue. Conventionally, a number of active and passive remediation approaches are applied to treat and manage AMD. Case studies on remediation approaches applied in actual mining sites such as lime neutralization, bioremediation, wetlands and permeable reactive barriers provide an outlook on actual long-term implications of AMD remediation. Hence, in spite of available remediation approaches, AMD treatment remains a challenge. The need for sustainable AMD treatment approaches has led to much focus on water reuse and resource recovery. This review underscores (i) characteristics and implication of AMD, (ii) remediation approaches in mining sites, (iii) alternative treatment technologies for water reuse, and (iv) resource recovery. Specifically, the role of membrane processes and alternative treatment technologies to produce water for reuse from AMD is highlighted. Although membrane processes are favorable for water reuse, they cannot achieve resource recovery, specifically selective valuable metal recovery. The approach of integrated membrane and conventional treatment processes are especially promising for attaining both water reuse and recovery of resources such as sulfuric acid, metals and rare earth elements. Overall, this review provides insights in establishing reuse and resource recovery as the holistic approach towards sustainable AMD treatment. Finally, integrated technologies that deserve in depth future exploration is highlighted.
Publisher: Elsevier BV
Date: 08-2018
Publisher: Informa UK Limited
Date: 04-2012
Publisher: Elsevier BV
Date: 08-2019
Publisher: Elsevier BV
Date: 10-2017
Publisher: Elsevier BV
Date: 10-2024
Publisher: Korean Fluid Machinery Association
Date: 02-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9EW00157C
Abstract: This review outlines all the work done on the membrane distillation crystallization process.
Publisher: Elsevier BV
Date: 02-2017
Publisher: Informa UK Limited
Date: 07-08-2013
Publisher: Elsevier BV
Date: 07-2019
Publisher: Elsevier BV
Date: 10-2023
Publisher: Elsevier BV
Date: 2020
DOI: 10.1016/J.CHEMOSPHERE.2019.124641
Abstract: Seawater reverse osmosis (SWRO) brine contain many valuable resources. In this study, fractional-submerged membrane distillation crystallizer (F-SMDC) was used to recover sodium sulfate (Na
Publisher: Informa UK Limited
Date: 26-03-2013
Publisher: Elsevier BV
Date: 02-2018
Publisher: Elsevier BV
Date: 07-2019
Publisher: Elsevier BV
Date: 2018
Publisher: Elsevier BV
Date: 07-2016
Publisher: Elsevier BV
Date: 07-2020
Location: Korea, Republic of
No related grants have been discovered for Youngkwon Choi.