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Khokhar NH, Ali I, Maitlo HA, Abbasi N, Panhwar S, Keerio HA, Ali A, Uddin S. Estimation of nitrous oxide emissions from rice paddy fields using the DNDC model: a case study of South Korea. Water Sci Technol 2022; 86:1308-1324. [PMID: 36178808 DOI: 10.2166/wst.2022.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The Denitrification-Decomposition (DNDC)-Rice is a mechanistic model which is widely used for the simulation and estimation of greenhouse gas emissions [nitrous oxide (N2O)] from soils under rice cultivation. N2O emissions from paddy fields in South Korea are of high importance for their cumulative effect on climate. The objective of this study was to estimate the N2O emissions and biogeochemical factors involved in N2O emissions such as ammonium (NH4+) and nitrate (NO3-) using the DNDC model in the rice-growing regions of South Korea. N2O emission was observed at every application of fertilizer and during end-season drainage at different rice-growing regions in South Korea. Maximum NH4+ and NO3- were observed at 0-10 cm depth of soil. NH4+ increased at each fertilizer application and no change in NO3- was observed during flooding. NH4+ decreased and NO3- increased simultaneously at end-season drainage. Minimum and maximum cumulative N2O emissions were observed at Chungcheongbuk-do and Jeju-do regions of South Korea, respectively. The simulated average cumulative N2O emission in rice paddies of South Korea was 1.37 kg N2O-N ha-1 season-1. This study will help in calculating the total nitrogen emissions from agriculture land of South Korea and the World.
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Affiliation(s)
- Nadar Hussain Khokhar
- Department of Civil Engineering, NUST Balochistan Campus, National University of Sciences and Technology, Quetta, Pakistan
| | - Imran Ali
- Department of Environment Sciences, Sindh Madressatul Islam University, Karachi, Sindh, Pakistan
| | - Hubdar Ali Maitlo
- Department of Energy and Environment Engineering, Dawood University of Engineering and Technology, Karachi, Sindh, Pakistan
| | - Naeem Abbasi
- Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue, Quebec H9X 3V9, Canada
| | - Sallahuddin Panhwar
- Department of Civil Engineering, NUST Balochistan Campus, National University of Sciences and Technology, Quetta, Pakistan
| | - Hareef Ahmed Keerio
- Department of Environment Engineering, Quaid E Awam University of Engineering Science and Technology, Nawabshah 67450, Pakistan E-mail: ,
| | - Asim Ali
- Department of Civil Engineering Technology, The Benazir Bhutto Shaheed University of Technology & Skill Development, Khairpur (Mir), Pakistan
| | - Salah Uddin
- Department of Civil Engineering, NUST Balochistan Campus, National University of Sciences and Technology, Quetta, Pakistan
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Maitlo HA, Maitlo G, Song X, Zhou M, Kim KH. A figure of merits-based performance comparison of various advanced functional nanomaterials for adsorptive removal of gaseous ammonia. Sci Total Environ 2022; 822:153428. [PMID: 35090910 DOI: 10.1016/j.scitotenv.2022.153428] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/11/2022] [Accepted: 01/22/2022] [Indexed: 06/14/2023]
Abstract
The implementation of sustainable industrial development based on energy/cost-effective techniques with zero/low rate of pollutant emission is an ideal strategy for the proper management of a natural environment. Gaseous ammonia released from a variety of anthropogenic sources (e.g., agriculture, pharmaceuticals, commercial cleaning products, and refrigerant) is estimated to be as high as 150 million tons∙year-1. To reduce the negative effects of atmospheric ammonia, the great utility of advanced functional nanomaterials (e.g., metal organic frameworks, covalent organic polymers, metal/metal oxide nanoparticles, and carbon nanostructures) has been recognized. To gain a better understanding of the sorptive removal potential of diverse materials, their performance has been evaluated based on the key performance merits (e.g., initial concentration, sorption capacity, and partition coefficient). Generally, the PC values can be applied to significantly estimate the contaminant adsorption potential of NMs via balancing the biased influences of operating parameters (e.g., initial concentration of pollutants) as perceived for the partitioning of compounds between aqueous phases at equilibrium (e.g., Henry's Law). Therefore, in this work, we have proposed the PC as a prosperous performance merit (in terms of heterogeneity of surface and strength of adsorption process) for the selection of high performance nano-adsorbents for gaseous ammonia. Moreover, the water stability, recyclability, economic aspects, and future perspectives have also been discussed for real-world applications of advanced nanomaterial against gaseous ammonia adsorption. The outcome of this evaluation will be expedient for the classification/selection of the most effectual and cost-effective options for mitigation of environmental pollutants like gaseous ammonia.
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Affiliation(s)
- Hubdar Ali Maitlo
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Department of Energy and Environment Engineering, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Ghulamullah Maitlo
- Department of Chemical Engineering, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Xiangru Song
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Minghua Zhou
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea.
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Khan AA, Maitlo HA, Khan IA, Lim D, Zhang M, Kim KH, Lee J, Kim JO. Metal oxide and carbon nanomaterial based membranes for reverse osmosis and membrane distillation: A comparative review. Environ Res 2021; 202:111716. [PMID: 34293311 DOI: 10.1016/j.envres.2021.111716] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 07/11/2021] [Accepted: 07/14/2021] [Indexed: 05/26/2023]
Abstract
Commercial membranes typically suffer from fouling and wetting during membrane distillation (MD). In contrast, reverse osmosis (RO) can be subject to the fouling issue if applied for highly saline feed solutions containing foulants (e.g., organics, oils, and surfactants). Among the diverse treatment options, the nanomaterial-based membranes have recently gained great interest due to their advantageous properties (e.g., enhanced flux and roughness, better pore size distribution, and higher conductivity). This review focuses on recent advances in the mechanical properties, anti-fouling capabilities, salt rejection, and economic viability of metal oxide (SiO2, TiO2, and ZnO) and carbon nanomaterial (graphene oxide/carbon nanotube)-based membranes. Current challenges in applying nanomaterial-based membranes are also discussed. The study further describes the preparation methods, mechanisms, commercial applications, and economical feasibility of metal oxide- and carbon nanomaterial-based membrane technologies.
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Affiliation(s)
- Aftab Ahmad Khan
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea; Department of Civil Engineering, COMSATS University Islamabad (CUI), Abbottabad Campus, Abbottabad, 22060, Pakistan.
| | - Hubdar Ali Maitlo
- Department of Energy & Environment Engineering, Dawood University of Engineering & Technology, M.A. Jinnah road, Karachi, 74800, Pakistan.
| | - Imtiaz Afzal Khan
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Daehwan Lim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Ming Zhang
- Department of Environmental Engineering, China Jiliang University, Hangzhou, 310018, China
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea.
| | - Jechan Lee
- Department of Environmental and Safety Engineering, Ajou University, Suwon, 16499, Republic of Korea.
| | - Jong-Oh Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea.
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Younis SA, Maitlo HA, Lee J, Kim KH. Nanotechnology-based sorption and membrane technologies for the treatment of petroleum-based pollutants in natural ecosystems and wastewater streams. Adv Colloid Interface Sci 2020; 275:102071. [PMID: 31806151 DOI: 10.1016/j.cis.2019.102071] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 11/12/2019] [Indexed: 12/31/2022]
Abstract
Petroleum processing wastewater (PPW) is a complex mixture of free, soluble, and emulsive hydrocarbons that often contain heavy metals and/or solid particles. As these hazardous constituents can accumulate in human beings and the environment, exposure to the PPW can have harmful effects in various respects. The use of environmental nanotechnologies (E-Nano) is considered an attractive option to resolve the problems associated with PPW. Among different treatment technologies, E-Nano-based sorption (adsorption/absorption) and membrane filtration approaches have been proven to have outstanding efficacy in remediation of PPW pollutants. It is, however, crucial to determine the appropriate technological option (e.g., low-cost operational conditions) for the practical application of such technologies. In this review, the potential of E-Nano-based sorption and membrane technologies in the treatment of various PPW pollutants is discussed based on their performances in comparison to traditional technologies. Their suitability is evaluated further in relation to their merits/disadvantages and economic feasibility with the goal of constructing a perspective map to efficiently implement the E-Nano technologies.
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Lee YS, Maitlo HA, Kim KH, Kwon EE, Lee MH, Kim JC, Song HN, Szulejko JE. Utilization of activated carbon as an effective replacement for a commercialized three-bed sorbent (Carbopack) to quantitate aromatic hydrocarbons in ambient air. Environ Res 2019; 179:108802. [PMID: 31629181 DOI: 10.1016/j.envres.2019.108802] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 10/05/2019] [Accepted: 10/05/2019] [Indexed: 06/10/2023]
Abstract
The potential use of activated carbon (AC) as an inexpensive and effective alternative sorbent material in thermal desorption is presented and validated for the analysis of aromatic volatile organic compounds (VOCs) such as benzene, toluene, m-xylene, and styrene (BTXS) in air. The optimum desorption conditions of an AC sampling tube (2 mg AC bed) were determined and compared with a commercial three-bed (Carbopack; C + B + X) tube sampler as a reference. The AC sampler exhibited good linearity (R2 > 0.99) and reproducibility (RSE of 2.38 ± 0.21%) for BTXS analysis. The AC tube sampler showed good storability (up to 3 d) and excellent recyclability (up to 50 cycles). An analysis of BTXS in ambient air showed excellent agreement between AC and CBX (bias < 5%). The 1% breakthrough volume values for 2 mg AC, when tested at 100 ppb of benzene as a sole component or in a BTXS mixture, were 10,000 or 5000 L g-1, respectively. The results of this study support the performance of AC as a suitable medium for sampling VOCs as reliable as high-cost commercial sorbent products.
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Affiliation(s)
- Yoon-Seo Lee
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, Republic of Korea
| | - Hubdar Ali Maitlo
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, Republic of Korea
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, Republic of Korea.
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, Seoul, 05005, Republic of Korea.
| | - Min-Hee Lee
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, Republic of Korea
| | - Jo-Chun Kim
- Department of Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-Gu, Seoul, 05029, South Korea.
| | - Hee-Nam Song
- ACEN Co., Ltd, Yeongtong-Gu Dukyong Dearo 1556-16, Suwon-Si, Gyeonggi-Do, 16670, Republic of Korea
| | - Jan E Szulejko
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, Republic of Korea
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Shah AK, Maitlo G, Shah AA, Channa IA, Kandhro GA, Maitlo HA, Bhatti UH, Shah A, Memon AQ, Jatoi AS, Park YH. One pot menthol synthesis via hydrogenations of citral and citronellal over montmorillonite-supported Pd/Ni-heteropoly acid bifunctional catalysts. Reac Kinet Mech Cat 2019. [DOI: 10.1007/s11144-019-01679-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Maitlo HA, Kim KH, Kumar V, Kim S, Park JW. Nanomaterials-based treatment options for chromium in aqueous environments. Environ Int 2019; 130:104748. [PMID: 31252168 DOI: 10.1016/j.envint.2019.04.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/18/2019] [Accepted: 04/08/2019] [Indexed: 05/27/2023]
Abstract
Sustainable development and the restoration of ecosystems are the important goals for civilization. Currently, heavy metal contamination of aquatic environments has become a serious issue. Chromium (Cr) is simultaneously an essential metallic element and one of 20 chemicals posing a maximum threat to living beings. To mitigate that threat, various treatment methods have been developed, including adsorption, electrocoagulation, photoelectrocatalysis, fuel cells, bioremediation, chemical precipitation, ultrafiltration, ion exchange, and co-precipitation. However, selection of the most energy- and cost-efficient wastewater treatment option has proven challenging, as each approach is subject to shortcomings involving energy consumption, treatment capacity, and efficiency. This review describes the potential role of diverse functional nanomaterials (e.g., iron/iron oxide nanoparticles, carbon nanostructures, metal organic frameworks, and their commercial counterparts) in treatment of Cr in aqueous environments with respect to key figure of merits, such as, adsorption capacity, removal efficiency, and partition coefficient. In addition, their performance was compared with the most common treatment options. The results of this study will help determine the most effective and economical options for control of Cr in aquatic environments.
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Affiliation(s)
- Hubdar Ali Maitlo
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul 04763, Republic of Korea
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul 04763, Republic of Korea.
| | - Vanish Kumar
- National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar 140306, Punjab, India.
| | - Sumin Kim
- Department of Architecture and Architectural Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Jae-Woo Park
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul 04763, Republic of Korea
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Maitlo HA, Kim KH, Khan A, Szulejko JE, Kim JC, Song HN, Ahn WS. Competitive adsorption of gaseous aromatic hydrocarbons in a binary mixture on nanoporous covalent organic polymers at various partial pressures. Environ Res 2019; 173:1-11. [PMID: 30884433 DOI: 10.1016/j.envres.2019.03.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 02/08/2019] [Accepted: 03/11/2019] [Indexed: 06/09/2023]
Abstract
Covalent-organic polymers (COPs) are recognized for their great potential for treating diverse pollutants via adsorption. In this study, the sorption behavior of benzene and toluene was investigated both individually and in a binary mixture against two types of COPs possessing different -NH2 functionalities. Namely, the potential of COPs was tested against benzene and toluene in a low inlet partial pressure range (0.5-20 Pa) using carbonyl-incorporated aromatic polymer (CBAP)-1-based diethylenediamine (EDA) [CD] and ethylenetriamine (DETA) [CE]. The maximum adsorption capacity and breakthrough values of both COPs showed dynamic changes with increases in the partial pressures of benzene and toluene. The maximum adsorption capacities (Amax) of benzene (as the sole component in N2 under atmospheric conditions) on CD and CE were in the range of 24-36 and 33-75 mg g-1, respectively. In contrast, with benzene and toluene in a binary mixture, the benzene Amax decreased more than two-fold (range of 2.7-15 and 6-39 mg g-1, respectively) due to competition with toluene for sorption sites. In contrast, the toluene Amax values remained consistent, reflecting its competitive dominance over benzene. The adsorption behavior of the targeted compounds (i.e., benzene and toluene) was explained by fitting the adsorption data by diverse isotherm models (e.g., Langmuir, Freundlich, Elovich, and Dubinin-Radushkevich). The current research would be helpful for acquiring a better understanding of the factors affecting competitive adsorption between different VOCs in relation to a given sorbent and across varying partial pressures.
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Affiliation(s)
- Hubdar Ali Maitlo
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul, 04763, Republic of Korea
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul, 04763, Republic of Korea.
| | - Azmatullah Khan
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul, 04763, Republic of Korea; Department of Civil Engineering, Balochistan University of Information Technology, Engineering and Management Sciences, Quetta, Pakistan
| | - Jan E Szulejko
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul, 04763, Republic of Korea
| | - Jo Chun Kim
- Department of Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-Gu, Seoul, 05029, South Korea
| | - Hee Nam Song
- ACEN Co., Ltd, Yeongtong-Gu Dukyong Dearo 1556-16, Suwon-Si, Gyeonggi-Do, 16670, South Korea
| | - Wha-Seung Ahn
- Department of Chemistry and Chemical Engineering, Inha University, Incheon, 22212, South Korea
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Maitlo HA, Lee J, Park JY, Kim JC, Kim KH, Kim JH. An energy-efficient air-breathing cathode electrocoagulation approach for the treatment of arsenite in aquatic systems. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.01.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kim JH, Maitlo HA, Park JY. Treatment of synthetic arsenate wastewater with iron-air fuel cell electrocoagulation to supply drinking water and electricity in remote areas. Water Res 2017; 115:278-286. [PMID: 28284094 DOI: 10.1016/j.watres.2017.02.066] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 02/27/2017] [Accepted: 02/28/2017] [Indexed: 06/06/2023]
Abstract
Electrocoagulation with an iron-air fuel cell is an innovative arsenate removal system that can operate without an external electricity supply. Thus, this technology is advantageous for treating wastewater in remote regions where it is difficult to supply electricity. In this study, the possibility of real applications of this system for arsenate treatment with electricity production was verified through electrolyte effect investigations using a small-scale fuel cell and performance testing of a liter-scale fuel cell stack. The electrolyte species studied were NaCl, Na2SO4, and NaHCO3. NaCl was overall the most effective electrolyte for arsenate treatment, although Na2SO4 produced the greatest electrical current and power density. In addition, although the current density and power density were proportional to the concentrations of NaCl and Na2SO4, the use of concentrations above 20 mM of NaCl and Na2SO4 inhibited arsenate treatment due to competition effects between anions and arsenate in adsorption onto the iron hydroxide. The dominant iron hydroxide produced at the iron anode was found to be lepidocrocite by means of Raman spectroscopy. A liter-scale four-stack iron-air fuel cell with 10 mM NaCl electrolyte was found to be able to treat about 300 L of 1 ppm arsenate solution to below 10 ppb during 1 day, based on its 60-min treatment capacity, as well as produce the maximum power density of 250 mW/m2.
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Affiliation(s)
- Jung Hwan Kim
- Department of Civil and Environmental Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul, 133-791, Republic of Korea
| | - Hubdar Ali Maitlo
- Department of Civil and Environmental Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul, 133-791, Republic of Korea
| | - Joo Yang Park
- Department of Civil and Environmental Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul, 133-791, Republic of Korea.
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Maitlo HA, Kim JH, Park JY. Arsenic treatment and power generation with a dual-chambered fuel cell with anionic and cationic membranes using NaHCO 3 anolyte and HCl or NaCl catholyte. Chemosphere 2017; 172:138-146. [PMID: 28064123 DOI: 10.1016/j.chemosphere.2016.12.149] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 12/09/2016] [Accepted: 12/29/2016] [Indexed: 06/06/2023]
Abstract
Dual-chambered fuel cells with an iron anode and an air-carbon cathode separated by an ion exchange membranes have been used to treat arsenate during power production. To select an effective catholyte, the dual-chambered fuel cell consisted 90 mL of 0.1 M HCl or 0.5 M NaCl as the catholyte and 1 L of 0.1 M NaHCO3 as the anolyte at an initial pH 5. The 0.1 M HCl was an effective catholyte, with which 1 ppm arsenate in 1 L of anolyte was reduced to 5 ppb in 1 h, and the maximum power density was about 6.3 w/m2 with an anion exchange membrane fuel cell (AEM_FC) and 4.4 w/m2 with a cation exchange membrane fuel cell (CEM_FC). Therefore, 90 mL of 0.1 M HCl was used as a catholyte to treat 20 L of 0.1 M NaHCO3 anolyte containing 1 ppm arsenate at an initial pH of 5 or 7. The arsenate level at pH 5 decreased to less than 5 ppb in 4 h, and the maximum power density was 5.9 W/m2 and 4.7 W/m2 with AEM_FC and CEM_FC, respectively. When using 0.01 M NaHCO3 as the anolyte at pH 5, arsenate was reduced to less than 5 ppb in 8 and 24 h for AEC_FC and CEM_FC, respectively. However, when using an anolyte at pH 7, arsenate could not be effectively removed in 24 h. Therefore, when using carbonate as an anolyte, the solution should be adjusted to a weakly acidic pH in order to remove arsenate.
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Affiliation(s)
- Hubdar Ali Maitlo
- Department of Civil and Environmental Engineering, Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul, 133-791, Republic of Korea
| | - Jung Hwan Kim
- Department of Civil and Environmental Engineering, Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul, 133-791, Republic of Korea.
| | - Joo Yang Park
- Department of Civil and Environmental Engineering, Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul, 133-791, Republic of Korea.
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Shin JW, Seo SJ, Maitlo HA, Park JY. The enhancement of ammonium removal from ethanolamine wastewater using air-cathode microbial fuel cells coupled to ferric reduction. Bioresour Technol 2015; 190:466-473. [PMID: 25804534 DOI: 10.1016/j.biortech.2015.03.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 03/07/2015] [Accepted: 03/09/2015] [Indexed: 06/04/2023]
Abstract
A microbial fuel cell (MFC) with biological Fe(III) reduction was implemented for simultaneous ethanolamine (ETA) degradation and electrical energy generation. In the feasibility experiment using acetate as a substrate in a single-chamber MFC with goethite and ammonium at a ratio of 3.0(mol/mol), up to 96.1% of the ammonium was removed through the novel process related to Fe(III). In addition, the highest voltage output (0.53V) and maximum power density (0.49Wm(-2)) were obtained. However, the ammonium removal and electrical performance decreased as acetate was replaced with ETA. In the long-term experiment, the electrical performance markedly decreased where the voltage loss increased due to Fe deposition on the membranes.
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Affiliation(s)
- Ja-Won Shin
- Department of Civil and Environmental Engineering, Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul, Republic of Korea
| | - Seok-Ju Seo
- Department of Civil and Environmental Engineering, Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul, Republic of Korea
| | - Hubdar Ali Maitlo
- Department of Civil and Environmental Engineering, Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul, Republic of Korea
| | - Joo-Yang Park
- Department of Civil and Environmental Engineering, Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul, Republic of Korea.
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