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Ali A, Alzamly A, Greish YE, Alzard RH, El-Maghraby HF, Qamhieh N, Mahmoud ST. Enhancing Hydrogen Sulfide Detection at Room Temperature Using ZIF-67-Chitosan Membrane. MEMBRANES 2023; 13:333. [PMID: 36984720 PMCID: PMC10054819 DOI: 10.3390/membranes13030333] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
Developing new materials for energy and environment-related applications is a critical research field. In this context, organic and metal-organic framework (MOF) materials are a promising solution for sensing hazardous gases and saving energy. Herein, a flexible membrane of the zeolitic imidazole framework (ZIF-67) mixed with a conductivity-controlled chitosan polymer was fabricated for detecting hydrogen sulfide (H2S) gas at room temperature (RT). The developed sensing device remarkably enhances the detection signal of 15 ppm of H2S gas at RT (23 °C). The response recorded is significantly higher than previously reported values. The optimization of the membrane doping percentage achieved exemplary results with respect to long-term stability, repeatability, and selectivity of the target gas among an array of several gases. The fabricated gas sensor has a fast response and a recovery time of 39 s and 142 s, respectively, for 15 ppm of H2S gas at RT. While the developed sensing device operates at RT and uses low bias voltage (0.5 V), the requirement for an additional heating element has been eliminated and the necessity for external energy is minimized. These novel features of the developed sensing device could be utilized for the real-time detection of harmful gases for a healthy and clean environment.
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Affiliation(s)
- Ashraf Ali
- Department of Physics, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
| | - Ahmed Alzamly
- Department of Chemistry, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
| | - Yaser E. Greish
- Department of Chemistry, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
- Department of Ceramics, National Research Centre, Cairo 68824, Egypt
| | - Reem H. Alzard
- Department of Chemistry, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
| | - Hesham F. El-Maghraby
- Department of Chemistry, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
- Department of Ceramics, National Research Centre, Cairo 68824, Egypt
| | - Naser Qamhieh
- Department of Physics, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
| | - Saleh T. Mahmoud
- Department of Physics, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
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2
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Chan YH, Lock SSM, Wong MK, Yiin CL, Loy ACM, Cheah KW, Chai SYW, Li C, How BS, Chin BLF, Chan ZP, Lam SS. A state-of-the-art review on capture and separation of hazardous hydrogen sulfide (H 2S): Recent advances, challenges and outlook. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 314:120219. [PMID: 36150621 DOI: 10.1016/j.envpol.2022.120219] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/12/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
Hydrogen sulfide (H2S) is a flammable, corrosive and lethal gas even at low concentrations (ppm levels). Hence, the capture and removal of H2S from various emitting sources (such as oil and gas processing facilities, natural emissions, sewage treatment plants, landfills and other industrial plants) is necessary to prevent and mitigate its adverse effects on human (causing respiratory failure and asphyxiation), environment (creating highly flammable and explosive environment), and facilities (resulting in corrosion of industrial equipment and pipelines). In this review, the state-of-the-art technologies for H2S capture and removal are reviewed and discussed. In particular, the recent technologies for H2S removal such as membrane, adsorption, absorption and membrane contactor are extensively reviewed. To date, adsorption using metal oxide-based sorbents is by far the most established technology in commercial scale for the fine removal of H2S, while solvent absorption is also industrially matured for bulk removal of CO2 and H2S simultaneously. In addition, the strengths, limitations, technological gaps and way forward for each technology are also outlined. Furthermore, the comparison of established carbon capture technologies in simultaneous and selective removal of H2S-CO2 is also comprehensively discussed and presented. It was found that the existing carbon capture technologies are not adequate for the selective removal of H2S from CO2 due to their similar characteristics, and thus extensive research is still needed in this area.
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Affiliation(s)
- Yi Herng Chan
- PETRONAS Research Sdn. Bhd. (PRSB), Lot 3288 & 3289, off Jalan Ayer Itam, Kawasan Institusi Bangi, 43000, Kajang, Selangor, Malaysia
| | - Serene Sow Mun Lock
- CO(2) Research Center (CO(2)RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Malaysia
| | - Mee Kee Wong
- PETRONAS Research Sdn. Bhd. (PRSB), Lot 3288 & 3289, off Jalan Ayer Itam, Kawasan Institusi Bangi, 43000, Kajang, Selangor, Malaysia
| | - Chung Loong Yiin
- Department of Chemical Engineering and Energy Sustainability, Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), 94300, Kota Samarahan, Sarawak, Malaysia; Institute of Sustainable and Renewable Energy (ISuRE), Universiti Malaysia Sarawak (UNIMAS), 94300, Kota Samarahan, Sarawak, Malaysia
| | | | - Kin Wai Cheah
- School of Computing, Engineering and Digital Technologies, Teesside University, Middlesbrough, TS1 3BX, United Kingdom
| | - Slyvester Yew Wang Chai
- Biomass Waste-to-Wealth Special Interest Group, Research Centre for Sustainable Technologies, Faculty of Engineering, Computing and Science, Swinburne University of Technology, Jalan Simpang Tiga, 93350, Kuching, Sarawak, Malaysia
| | - Claudia Li
- Department of Chemical & Biomolecular Engineering, National University of Singapore, 117585, Singapore
| | - Bing Shen How
- Biomass Waste-to-Wealth Special Interest Group, Research Centre for Sustainable Technologies, Faculty of Engineering, Computing and Science, Swinburne University of Technology, Jalan Simpang Tiga, 93350, Kuching, Sarawak, Malaysia
| | - Bridgid Lai Fui Chin
- Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia; Energy and Environment Research Cluster, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Zhe Phak Chan
- PETRONAS Research Sdn. Bhd. (PRSB), Lot 3288 & 3289, off Jalan Ayer Itam, Kawasan Institusi Bangi, 43000, Kajang, Selangor, Malaysia
| | - Su Shiung Lam
- Pyrolysis Technology Research Group, Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; Henan Province Engineering Research Center for Biomass Value-added Products, School of Forestry, Henan Agricultural University, Zhengzhou, 450002, China; Sustainability Cluster, School of Engineering, University of Petroleum & Energy Studies, Dehradun, Uttarakhand, 248007, India.
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3
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Chen Z, Feng Q, Yue R, Chen Z, Moselhi O, Soliman A, Hammad A, An C. Construction, renovation, and demolition waste in landfill: a review of waste characteristics, environmental impacts, and mitigation measures. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:46509-46526. [PMID: 35508848 DOI: 10.1007/s11356-022-20479-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 04/23/2022] [Indexed: 06/14/2023]
Abstract
With the increase in global population, industrialization, and urbanization, waste from construction, renovation, and demolition (CRD) activities has grown rapidly. There are some issues associated with the disposal of CRD waste in landfills. Depositing in landfills is still the main method for CRD waste disposal from the global perspective. The objective of this study is to comprehensively review the environmental impacts and management technologies for CRD waste in landfills. It includes the overview of the current CRD waste flow and relevant policies worldwide. The main environmental problems caused by CRD waste in landfills include leachate and H2S gas emission. This paper summarizes the primary environmental impacts caused by landfilling CRD waste and the available mitigation technologies. It also includes the use of CRD waste as an alternative material in landfill barriers. Although many technologies can help mitigate the environmental impacts caused by landfilling CRD waste, the optimal solution is to divert the waste flow from landfills using the "3R" principle. In the end, the existing research gaps in CRD waste and landfill management are also discussed.
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Affiliation(s)
- Zhikun Chen
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada
| | - Qi Feng
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada
| | - Rengyu Yue
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada
| | - Zhi Chen
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada
| | - Osama Moselhi
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada
| | - Ahmed Soliman
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada
| | - Amin Hammad
- Institute for Information Systems Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada
| | - Chunjiang An
- Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, H3G 1M8, Canada.
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4
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AlTakroori HHD, Ali A, Greish YE, Qamhieh N, Mahmoud ST. Organic/Inorganic-Based Flexible Membrane for a Room-Temperature Electronic Gas Sensor. NANOMATERIALS 2022; 12:nano12122037. [PMID: 35745376 PMCID: PMC9227867 DOI: 10.3390/nano12122037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 02/04/2023]
Abstract
A room temperature (RT) H2S gas sensor based on organic–inorganic nanocomposites has been developed by incorporating zinc oxide (ZnO) nanoparticles (NPs) into a conductivity-controlled organic polymer matrix. A homogeneous solution containing poly (vinyl alcohol) (PVA) and ionic liquid (IL) and further doped with ZnO NPs was used for the fabrication of a flexible membrane (approx. 200 μm in thickness). The sensor was assessed for its performance against hazardous gases at RT (23 °C). The obtained sensor exhibited good sensitivity, with a detection limit of 15 ppm, and a fast time response (24 ± 3 s) toward H2S gas. The sensor also showed excellent repeatability, long-term stability and selectivity toward H2S gas among other test gases. Furthermore, the sensor depicted a high flexibility, low cost, easy fabrication and low power consumption, thus holding great promise for flexible electronic gas sensors.
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Affiliation(s)
- Husam H. D. AlTakroori
- Department of Physics, United Arab Emirates University, Al-Ain 15551, United Arab Emirates; (H.H.D.A.); (A.A.); (N.Q.)
| | - Ashraf Ali
- Department of Physics, United Arab Emirates University, Al-Ain 15551, United Arab Emirates; (H.H.D.A.); (A.A.); (N.Q.)
| | - Yaser E. Greish
- Department of Chemistry, United Arab Emirates University, Al-Ain 15551, United Arab Emirates;
- Department of Ceramics, National Research Centre, Cairo 68824, Egypt
| | - Naser Qamhieh
- Department of Physics, United Arab Emirates University, Al-Ain 15551, United Arab Emirates; (H.H.D.A.); (A.A.); (N.Q.)
| | - Saleh T. Mahmoud
- Department of Physics, United Arab Emirates University, Al-Ain 15551, United Arab Emirates; (H.H.D.A.); (A.A.); (N.Q.)
- Correspondence:
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5
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Shakeel A, Rizwan K, Farooq U, Iqbal S, Altaf AA. Advanced polymeric/inorganic nanohybrids: An integrated platform for gas sensing applications. CHEMOSPHERE 2022; 294:133772. [PMID: 35104552 DOI: 10.1016/j.chemosphere.2022.133772] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 01/23/2022] [Accepted: 01/25/2022] [Indexed: 05/27/2023]
Abstract
Rapid industrial development, vehicles, domestic activities and mishandling of garbage are the main sources of pollutants, which are destroying the atmosphere. There is a need to continuously monitor these pollutants for the safety of the environment and human beings. Conventional instruments for monitoring of toxic gases are expensive, bigger in size and time-consuming. Hybrid materials containing organic and inorganic components are considered potential candidates for diverse applications, including gas sensing. Gas sensors convert the information regarding the analyte into signals. Various polymeric/inorganic nanohybrids have been used for the sensing of toxic gases. Composites of different polymeric materials like polyaniline (PANI), poly (4-styrene sulfonate) (PSS), poly (3,4-ethylene dioxythiophene) (PEDOT), etc. with various metal/metal oxide nanoparticles have been reported as sensing materials for gas sensors because of their unique redox features, conductivity and facile operation at room temperature. Polymeric nanohybrids showed better performance because of the larger surface area of nanohybrids and the synergistic effect between polymeric and inorganic materials. This review article focuses on the recent developments of emerging polymeric/inorganic nanohybrids for sensing various toxic gases including ammonia, hydrogen, nitrogen dioxide, carbon oxides and liquefied petroleum gas. Advantages, disadvantages, operating conditions and prospects of hybrid composites have also been discussed.
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Affiliation(s)
- Ahmad Shakeel
- Faculty of Civil Engineering and Geosciences, Department of Hydraulic Engineering, Delft University of Technology, Stevinweg 1, 2628, CN, Delft, the Netherlands; Department of Chemical, Polymer & Composite Materials Engineering, University of Engineering & Technology, Lahore, New Campus, 54890, Pakistan.
| | - Komal Rizwan
- Department of Chemistry, University of Sahiwal, Sahiwal, 57000, Pakistan.
| | - Ujala Farooq
- Faculty of Aerospace Engineering, Department of Aerospace Structures and Materials, Delft University of Technology, Kluyverweg 1, 2629, HS, Delft, the Netherlands
| | - Shahid Iqbal
- Department of Chemistry, School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), H-12, Islamabad, 46000, Pakistan
| | - Ataf Ali Altaf
- Department of Chemistry, University of Okara, Okara, 56300, Pakistan
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6
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Vincent T, Guy M, Louis-César P, Jean-François B, Richard M. Physical process to sort construction and demolition waste (C&DW) fines components using process water. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 143:125-134. [PMID: 35240448 DOI: 10.1016/j.wasman.2022.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 02/13/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
Modern societies are generating considerable volume of Construction and Demolition Wastes (C&DW) annually. Most recycling facilities offers viable sorting and recycling options for the coarser particles of the different materials found in those wastes. However, usual dry mechanical sorting and human sorting are not efficient on C&DW fines particles (C&DF, <10 mm) representing the third of the C&DW produced and being composed of similar materials. Recent environmental issues related to the landfilling of C&DF have pointed out the need to develop innovative alternative and adapted recycling paths for the C&DF. This study presents an efficient sorting process train based on physical separation steps used in the mining and the soil treatment industries. The use and recirculation of process water allowed to segregate and concentrate the gypsum from the 2-12 mm C&DF into a specific fraction (55-65% gypsum content) representing 40% of the total mass. Other constituents were sorted based on their relative density, size and shapes; thanks to hydraulic classification and physical sorting forming four more fractions with high recycling potential: coarse aggregates (15%), fine aggregates (9.4%), organic and inorganic fibers (10.8%) and light organic compounds (24.8%). The process has been designed to be integrated in existing sorting facilities and the process costs were evaluated to 38 CAN$/t.
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Affiliation(s)
- Taillard Vincent
- Institut national de la recherche scientifique (Centre Eau Terre Environnement), Université du Québec, 490 rue de la Couronne, Québec, Qc G1K 9A9, Canada.
| | - Mercier Guy
- Institut national de la recherche scientifique (Centre Eau Terre Environnement), Université du Québec, 490 rue de la Couronne, Québec, Qc G1K 9A9, Canada.
| | - Pasquier Louis-César
- Institut national de la recherche scientifique (Centre Eau Terre Environnement), Université du Québec, 490 rue de la Couronne, Québec, Qc G1K 9A9, Canada.
| | - Blais Jean-François
- Institut national de la recherche scientifique (Centre Eau Terre Environnement), Université du Québec, 490 rue de la Couronne, Québec, Qc G1K 9A9, Canada.
| | - Martel Richard
- Institut national de la recherche scientifique (Centre Eau Terre Environnement), Université du Québec, 490 rue de la Couronne, Québec, Qc G1K 9A9, Canada.
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7
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Flexible Cu3(HHTP)2 MOF Membranes for Gas Sensing Application at Room Temperature. NANOMATERIALS 2022; 12:nano12060913. [PMID: 35335724 PMCID: PMC8949662 DOI: 10.3390/nano12060913] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/07/2022] [Accepted: 03/08/2022] [Indexed: 12/20/2022]
Abstract
Mixed matrix membranes (MMMs), possessing high porosity, have received extensive attention for gas sensing applications. However, those with high flexibility and significant sensitivity are rare. In this work, we report on the fabrication of a novel membrane, using Cu3(HHTP)2 MOF (Cu-MOF) embedded in a polymer matrix. A solution comprising a homogenous suspension of poly-vinyl alcohol (PVA) and ionic liquid (IL), and Cu-MOF solid particles, was cast onto a petri dish to obtain a flexible membrane (215 μm in thickness). The sensor membrane (Cu-MOF/PVA/IL), characterized for its structure and morphology, was assessed for its performance in sensing against various test gases. A detection limit of 1 ppm at 23 °C (room temperature) for H2S was achieved, with a response time of 12 s. Moreover, (Cu-MOF/PVA/IL) sensor exhibited excellent repeatability, long-term stability, and selectivity towards H2S gas. The other characteristics of the (Cu-MOF/PVA/IL) sensor include high flexibility, low cost, low-power consumption, and easy fabrication technique, which nominate this sensor as a potential candidate for use in practical industrial applications.
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8
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Barbhuiya NH, Kumar A, Singh A, Chandel MK, Arnusch CJ, Tour JM, Singh SP. The Future of Flash Graphene for the Sustainable Management of Solid Waste. ACS NANO 2021; 15:15461-15470. [PMID: 34633174 DOI: 10.1021/acsnano.1c07571] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Graphene research has steadily increased, and its commercialization in many applications is becoming a reality because of its superior physicochemical properties and advances in synthesis techniques. However, bulk-scale production of graphene still requires large amounts of solvents, electrochemical treatment, or sonication. Recently, a method was discovered to convert bulk quantities of carbonaceous materials to graphene using flash Joule heating (FJH) and, so named, flash graphene (FG). This method can be used to turn various solid wastes containing the prerequisite element carbon into FG. Globally, more than 2 billion tons of municipal solid waste (MSW) are generated every year and, in many municipalities, are becoming unmanageable. The most commonly used waste management methods include recycling, composting, anaerobic digestion, incineration, gasification, pyrolysis, and landfill disposal. However, around 70% of global waste ends up in landfills or open dumps, while the rest is recycled, composted, or incinerated. Even the various waste valorization techniques, such as pyrolysis and gasification, produce some waste residues that have their ultimate destination in landfills. Thus, technologies that can minimize waste volume or convert waste into valuable products are required. The thermal treatment process of FJH for FG production provides both waste volume reduction and valorization in the form of FG. In this Perspective, we provide an overview of FJH and its possible applications in various types of waste conversion/valorization. We describe the typical current MSW management system as well as the potential for creating FG at various stages and propose a schematic plan for the incorporation of FG in MSW management. We also analyze the strengths, weaknesses, opportunities, and threats of MSW as an FG precursor in terms of technical, economic, environmental, and social sustainability. This valuable waste valorization and management strategy can help achieve near-zero waste and an economy-boosting MSW management system.
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Affiliation(s)
- Najmul Haque Barbhuiya
- Environmental Science and Engineering Department (ESED), Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Ashish Kumar
- Environmental Science and Engineering Department (ESED), Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Ayush Singh
- Environmental Science and Engineering Department (ESED), Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Munish K Chandel
- Environmental Science and Engineering Department (ESED), Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Christopher J Arnusch
- Department of Desalination and Water Treatment, Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, Midreshet Ben Gurion 8499000, Israel
| | - James M Tour
- Department of Chemistry, Department of Materials Science and NanoEngineering, Smalley-Curl Institute and NanoCarbon Center, Welch Institute for Advanced Materials, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Swatantra P Singh
- Environmental Science and Engineering Department (ESED), Indian Institute of Technology Bombay, Mumbai 400076, India
- Centre for Research in Nanotechnology & Science (CRNTS), Indian Institute of Technology Bombay, Mumbai 400076, India
- Interdisciplinary Program in Climate Studies (IDPCS), Indian Institute of Technology Bombay, Mumbai 400076, India
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9
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Jia C, Holt J, Nicholson H, Browder JE, Fu X, Yu X, Adkins R. Identification of origins and influencing factors of environmental odor episodes using trajectory and proximity analyses. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 295:113084. [PMID: 34153585 DOI: 10.1016/j.jenvman.2021.113084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 06/07/2021] [Accepted: 06/13/2021] [Indexed: 06/13/2023]
Abstract
It is challenging for the governmental agencies to provide an instant response and to systematically analyze the huge number of odor complaints which are received frequently by them. This study aimed to establish a data analysis framework featuring trajectory and proximity analyses to confirm odor origins, assess impact areas, and identify determinants and mechanisms of odor episodes based on odor reports. The investigation used 273 odor complaints reported in northern Collierville, Tennessee, between January 1st, 2019 and December 15th, 2020. The location of each complaint was geocoded in Google Map, and the backward wind trajectories were calculated using the web-based Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model. The nearby Eplex Landfill and Collierville Northwest Sewage Treatment Plant were targeted for the analyses. Odor impacts were evaluated with temporal and spatial characteristics of reported odor episodes. Logistic models were performed to identify weather parameters that significantly influenced odor occurrence. The field inspections indicated two periods targeting different sources. Period 1: from January 1st, 2019 to October 31st, 2020, the landfill appeared as the major source; Period 2: from November 1st, 2020 to December 15th, 2020, the sewage plant emerged as the major source. In Period 1, 65% of the complaints had wind transporting from the landfill, and 88% occurred at residences within 500 m of the landfill. In Period 2, 33% of the complaints had wind that blew from the sewage plant and 85% occurred at residences within 1000 m from the sewage plant. The likelihood of an odor episode day was significantly associated with wind speed [Odds Ratio (OR) = 0.66, 95% Confidence Interval (CI): 0.56-0.77], temperature (OR = 0.97, 95% CI: 0.95-0.98), and rainfall (OR = 1.02, 95% CI: 1.00-1.04). The odor issue in Collierville reflected poor zoning between the odor sources and residential areas. Separation distances of 500 m and 1000 m from the landfill and sewage facilities, respectively, are suggested to prevent odor issues. The proposed data analysis framework can be adopted by governmental agencies for fast responses to odor complaints, odor assessment, and environmental odor management.
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Affiliation(s)
- Chunrong Jia
- School of Public Health, University of Memphis, Memphis, TN, 38152, USA.
| | - Jim Holt
- Memphis Environmental Field Office, Tennessee Department of Environment and Conservation, Bartlett, TN, 38133, USA
| | - Herb Nicholson
- Memphis Environmental Field Office, Tennessee Department of Environment and Conservation, Bartlett, TN, 38133, USA
| | | | - Xianqiang Fu
- School of Public Health, University of Memphis, Memphis, TN, 38152, USA
| | - Xinhua Yu
- School of Public Health, University of Memphis, Memphis, TN, 38152, USA
| | - Ronné Adkins
- Memphis Environmental Field Office, Tennessee Department of Environment and Conservation, Bartlett, TN, 38133, USA
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10
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Ali A, Alzamly A, Greish YE, Bakiro M, Nguyen HL, Mahmoud ST. A Highly Sensitive and Flexible Metal-Organic Framework Polymer-Based H 2S Gas Sensor. ACS OMEGA 2021; 6:17690-17697. [PMID: 34278154 PMCID: PMC8280656 DOI: 10.1021/acsomega.1c02295] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 06/22/2021] [Indexed: 05/02/2023]
Abstract
We report the fabrication of a novel metal-organic framework (MOF)-polymer mixed-matrix flexible membrane for the detection of hydrogen sulfide (H2S) gas at room temperature. This high-performance gas sensor is based on MOF-5 microparticles embedded on a conductivity-controlled chitosan (CS) organic membrane. The conductivity of the organic membrane is controlled by blending it with a glycerol ionic liquid (IL) at different concentrations. The sensor showed a remarkable detection sensitivity for H2S gas at a concentrations level as low as 1 ppm at room temperature. The MOF-5/CS/IL gas sensor demonstrates a highly desirable detection selectivity, fast response time (<8 s), recovery time of less than 30 s, and outstanding sensing stability averaging at 97% detection with 50 ppm of H2S gas. This composite having high sensitivity, low-power consumption, and flexibility holds great promise for addressing current challenges pertinent to environmental sustainability.
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Affiliation(s)
- Ashraf Ali
- Department
of Physics, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
| | - Ahmed Alzamly
- Department
of Chemistry, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
| | - Yaser E Greish
- Department
of Chemistry, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
| | - Maram Bakiro
- Department
of Chemistry, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
| | - Ha L. Nguyen
- Department
of Chemistry, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
- Berkeley
Global Science Institute, Berkeley, California 94720, United States
| | - Saleh T. Mahmoud
- Department
of Physics, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
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11
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Jiang K, Cheng Z, Lou Z, Wang L, Lu H, Xu B, Jin N. Chemical and olfactive impacts of organic matters on odor emission patterns from the simulated construction and demolition waste landfills. J Environ Sci (China) 2021; 103:196-206. [PMID: 33743901 DOI: 10.1016/j.jes.2020.10.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/19/2020] [Accepted: 10/20/2020] [Indexed: 06/12/2023]
Abstract
The explosive increase of construction and demolition waste (CDW) caused the insufficient source separation and emergency disposal at domestic waste landfills in many developing countries. Some organic fractions were introduced to the CDW landfill process and resulted in serious odor pollution. To comprehensively explore the impacts of organic matters on odor emission patterns, five CDW landfills (OIL), with organic matters/ inert CDW components (O/I) from 5% to 30%, and the control group only with inert components (IL) or organics (OL) were simulated at the laboratory. The chemical and olfactive characters of odors were evaluated using the emission rate of 94 odorants content (ERtotal), theory odor concentration (TOCtotal), and e-nose concentration (ERENC), and their correlations with waste properties were also analyzed. It was found that the main contributors to ERtotal (IL: 93.0% NH3; OIL: 41.6% sulfides, 31.0% NH3, 25.9% oxygenated compounds) and TOCtotal (IL: 64.1% CH3SH, 28.2% NH3; OIL: 71.7% CH3SH, 24.8% H2S) changed significantly. With the rise of O/I, ERtotal, TOCtotal, and ERENC increased by 10.9, 20.6, and 2.1 times, respectively. And the organics content in CDW should be less than 10% (i.e., DOC<101.3 mg/L). The good regressions between waste properties (DOC, DN, pH) and ERENC- (r=0.86, 0.86, -0.88, p<0.05), TOCtotal- (r=0.82, 0.79, -0.82, p<0.05) implied that the carbon sources and acidic substances relating to organics degradation might result in that increase. Besides, the correlation analysis results (ERENC-vs.TOCtotal-, r=0.96, p<0.01; vs.ERtotal-, r=0.86, p<0.05) indicated that e-nose perhaps was a reliable odor continuous monitoring tool for CDW landfills.
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Affiliation(s)
- Kunyu Jiang
- College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Zhaowen Cheng
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ziyang Lou
- College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China; School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, Shanghai 200092, China; Institute for Urban Governance, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Luochun Wang
- College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China.
| | - Hailin Lu
- Shanghai Environment Group co., Ltd, Shanghai 200336, China
| | - Bijun Xu
- Shanghai Environmental Sanitation Engineering Design Institute Co., Ltd, Shanghai 200001, China
| | - Ningben Jin
- Shanghai Environmental Sanitation Engineering Design Institute Co., Ltd, Shanghai 200001, China
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12
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Everaert M, Broos K, Nielsen P, Van Dun W, Boone M, Quaghebeur M. Carbonation is affecting biodegradability testing of fiber cement composites. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 686:888-892. [PMID: 31412526 DOI: 10.1016/j.scitotenv.2019.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/29/2019] [Accepted: 06/02/2019] [Indexed: 06/10/2023]
Abstract
Fiber cement composites (FCCs) containing natural cellulosic fibres are emerging materials in the building industry. At the end of life, FCCs are often disposed of as part of the C&DW in a landfill. The production of landfill gasses in landfills needs to be kept as low as possible. Generally, leaching of total dissolved organic carbon (DOC) is used as a proxy for the biodegradability of a waste material and the subsequent production of landfill gasses, and is, therefore, used to evaluate biodegradability of waste. In this study, FCC samples with varying average diameter and varying age were subjected to both a batch leaching test (determine DOC leaching) and to a standardized biodegradability test. The batch leaching showed that the DOC leaching ranged between 520 and 1300 mg kg-1 for the tested samples, and that leaching of DOC decreases with increasing particle diameter and with increasing effects of ageing. Yet, the biodegradability results indicated that the leaching of DOC from FCCs does not result in the release of landfill gasses. This study hypothises that the DOC that leaches from the FCCs is being degraded to CO2, but that the formed CO2 is immediately captured by the material itself through the process of carbonation. An inpermeable layer is formed around the material that stops further leaching of DOC. The results of this study therefore suggest that leaching of DOC is a poor indicator for the biodegradability of FCCs.
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Affiliation(s)
- Maarten Everaert
- Unit Sustainable Materials Management, Flemish Institute for Technological Research (VITO), 2400 6 Mol, Belgium.
| | - Kris Broos
- Unit Sustainable Materials Management, Flemish Institute for Technological Research (VITO), 2400 6 Mol, Belgium
| | - Peter Nielsen
- Unit Sustainable Materials Management, Flemish Institute for Technological Research (VITO), 2400 6 Mol, Belgium
| | - Warre Van Dun
- Unit Sustainable Materials Management, Flemish Institute for Technological Research (VITO), 2400 6 Mol, Belgium
| | - Marijn Boone
- Unit Sustainable Materials Management, Flemish Institute for Technological Research (VITO), 2400 6 Mol, Belgium; TESCAN XRE, Bellebergen 2B, Box 1, 9000 Gent, Belgium
| | - Mieke Quaghebeur
- Unit Sustainable Materials Management, Flemish Institute for Technological Research (VITO), 2400 6 Mol, Belgium
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Ding Y, Xiong J, Zhou B, Wei J, Qian A, Zhang H, Zhu W, Zhu J. Odor removal by and microbial community in the enhanced landfill cover materials containing biochar-added sludge compost under different operating parameters. WASTE MANAGEMENT (NEW YORK, N.Y.) 2019; 87:679-690. [PMID: 31109570 DOI: 10.1016/j.wasman.2019.03.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 01/29/2019] [Accepted: 03/05/2019] [Indexed: 06/09/2023]
Abstract
Odor problem has become a growing concern for municipal solid waste (MSW) operators and communities located close to landfill sites. In this study, nine laboratory-scale landfill reactors were used to simulate in-situ odor control by a novel landfill cover material consisting of biochar-added sludge compost under various operating parameters. Characterization of odor removal and microbial community in the cover layer under various operating parameters was conducted using gas chromatograph-mass spectrometry and 454 high-throughput pyrosequencing, respectively. Results showed that H2S (76.9-86.0%) and volatile organic sulfur compounds (VOSCs) (12.3-21.7%) were dominant according to their theoretical generated odor concentrations. The total odor REs calculated using the theoretical odor concentrations in the landfill reactors were different than using the measured odor values, which were ranked from high to low as: R6 > R5 > R7 > R4 > R8 > R9 > R3 > R2 > R1, showing the largest discrepancy of 25.3%. The optimum combination of operating parameters based on the theoretical odor concentration was different with that based on the measured odor concentrations. Moreover, although Firmicutes (12.21-91.48%), Proteobacteria (3.55-51.03%), and Actinobacteria (4.01-47.39%) were in general the three major bacterial phyla found in the landfill covers, the detailed bacterial communities in the cover materials of the simulated reactors varied with various operating parameters. Alicyclobacillus and Tuberibacillus showed positive correlations with the removal efficiencies (REs) of chlorinated compounds, H2S, aromatic compounds, volatile organic sulfur compounds (VOSCs), and organic acids. The correlations of Rhodanobacter, Gemmatimonas, Flavisolibacter and Sphingomonas were strongly positive with ammonia RE and relatively positive with REs of organic acids, VOSCs, and aromatic compounds. These findings are instrumental in understanding the relationship between the structure of microbial communities and odor removal performances, and in developing techniques for in-situ odor control at landfills.
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Affiliation(s)
- Ying Ding
- Department of Environmental Engineering, Hangzhou Normal University, Hangzhou 310016, PR China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310016, PR China.
| | - Junsheng Xiong
- Department of Environmental Engineering, Hangzhou Normal University, Hangzhou 310016, PR China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310016, PR China; Hubei Academy of Environmental Sciences, Wuhan 430070, PR China
| | - Bowei Zhou
- Department of Environmental Engineering, Hangzhou Normal University, Hangzhou 310016, PR China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310016, PR China
| | - Jiaojiao Wei
- Department of Environmental Engineering, Hangzhou Normal University, Hangzhou 310016, PR China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310016, PR China
| | - Aiai Qian
- Department of Environmental Engineering, Hangzhou Normal University, Hangzhou 310016, PR China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310016, PR China
| | - Hangjun Zhang
- Department of Environmental Engineering, Hangzhou Normal University, Hangzhou 310016, PR China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310016, PR China
| | - Weiqin Zhu
- Department of Environmental Engineering, Hangzhou Normal University, Hangzhou 310016, PR China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310016, PR China
| | - Jun Zhu
- Department of Biological & Agricultural Engineering, University of Arkansas, AR 72701, USA.
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Wu C, Liu J, Liu S, Li W, Yan L, Shu M, Zhao P, Zhou P, Cao W. Assessment of the health risks and odor concentration of volatile compounds from a municipal solid waste landfill in China. CHEMOSPHERE 2018; 202:1-8. [PMID: 29550469 DOI: 10.1016/j.chemosphere.2018.03.068] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 02/05/2018] [Accepted: 03/10/2018] [Indexed: 06/08/2023]
Abstract
Municipal solid waste (MSW) landfills are a source of odorous and toxic compounds. In this work, we present an integrated assessment of the odor concentration and human health risks of volatile compounds to evaluate the environmental quality at a MSW landfill. Air samples were collected seasonally from six areas of the landfill with different functions. The total concentrations of the compounds ranged from 204.0 to 7426.7 μg m-3, and the concentrations in temporarily and permanently capped areas were 50.3 and 83.4% lower than those in the tipping area, respectively. The odor concentration was greatest at the leachate collection tank (1732-6254 ouE m-3) and tipping area (1573-4113 ouE m-3) and was mainly caused by hydrogen sulfide (57.9 and 49.1%, respectively). Moreover, the odor concentration was positively correlated with the temperature (r = 0.500, p < 0.05, n = 24). Although the non-carcinogenic (HI) and carcinogenic (R) risks of most compounds were largely below the acceptable levels (HI = 1, R = 1.0E-6), HI values of hydrogen sulfide (2.3), trichloropropane (2.0), and naphthalene (1.2) as well as R values of naphthalene (1.3E-4) and trimethylbenzene (1.2E-4) in the waste areas exceeded acceptable levels. Moreover, the cumulative HI (2.5-5.7) and R (1.0E-04 to 3.4E-04) in the waste areas should receive special attention since they were above acceptable levels during all of the seasons. Aromatic and halogenated compounds dominated the cumulative R, accounting for 79 and 21% of the total, on average, while for the cumulative HI, sulfur compounds contributed the most (67%).
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Affiliation(s)
- Chuandong Wu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jiemin Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| | - Shihua Liu
- China Building Material Test & Certification Group Co., Ltd, Beijing, 100024, China
| | - Wenhui Li
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Luchun Yan
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Mushui Shu
- Key Laboratory of Occupational Health and Safety, Beijing Municipal Institute of Labor Protection, Beijing, 100054, China
| | - Peng Zhao
- Key Laboratory of Occupational Health and Safety, Beijing Municipal Institute of Labor Protection, Beijing, 100054, China
| | - Peng Zhou
- BESG Environmental Engineering Co., Ltd, Beijing, 100101, China
| | - Wenbin Cao
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
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15
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Long YY, Du Y, Fang Y, Xu J, He YN, Shen DS. Effect of migration and transformation of iron on the endogenous reduction of H2S in anaerobic landfill. WASTE MANAGEMENT (NEW YORK, N.Y.) 2016; 53:76-81. [PMID: 26584556 DOI: 10.1016/j.wasman.2015.11.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 10/14/2015] [Accepted: 11/03/2015] [Indexed: 06/05/2023]
Abstract
Hydrogen sulfide (H2S) is a major odor in landfill gas and needs urgent treatment. In this study, the effect of migration and transformation of iron on the endogenous reduction of H2S was investigated in two simulated landfills. The results showed that the H2S emission concentration from the landfill cover of conventional anaerobic landfill (CL) and anaerobic landfill with leachate recirculation (RL) could reach 19.4mgm(-3) and 24.1mgm(-3), respectively. However, the migration and transformation of iron in anaerobic landfill with different operational modes results in different endogenous reduction mechanism for H2S. The proportion of precipitation-reduction mechanism and oxidation-reduction mechanism in CL was 73.3% and 26.3%, respectively. But for RL, the function of oxidation was enhanced, and the sulfide content was reduced 23.1% compared with CL. The iron in landfill with leachate recirculation revealed good endogenous reduction effect on H2S control after a period of time landfilling.
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Affiliation(s)
- Yu-Yang Long
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
| | - Yao Du
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Zone-King Environmental Sci & Tech Co., Ltd., 7F, Zhejiang Sanli Times Square, No. 536, Shaoxing Road, Hangzhou 310004, China
| | - Yuan Fang
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Jing Xu
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Yan-Ni He
- Zhejiang Provincial Solid Waste Management and Supervision Center, No. 306 Wenyilu, Hangzhou 310013, China
| | - Dong-Sheng Shen
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
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Bai S, Chen C, Cui M, Luo R, Chen A, Li D. Rapid synthesis of rGO–MoO3 hybrids and mechanism of enhancing sensing performance to H2S. RSC Adv 2015. [DOI: 10.1039/c5ra06716b] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The 2.5 wt% rGO–MoO3 hybrid prepared by an in situ microwave hydrothermal method has excellent sensing properties to ppm-level H2S at 110 °C.
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Affiliation(s)
- Shouli Bai
- Beijing Key Laboratory of Environmentally Harmful Chemicals Analysis
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Chao Chen
- Beijing Key Laboratory of Environmentally Harmful Chemicals Analysis
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Meng Cui
- Beijing Key Laboratory of Environmentally Harmful Chemicals Analysis
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Ruixian Luo
- Beijing Key Laboratory of Environmentally Harmful Chemicals Analysis
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Aifan Chen
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Dianqing Li
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
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