1
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Liu S, Yang W, Liu L, Chen H, Liu Y. Enhanced H 2S Gas-Sensing Performance of Ni-Doped ZnO Nanowire Arrays. ACS OMEGA 2023; 8:7595-7601. [PMID: 36873010 PMCID: PMC9979365 DOI: 10.1021/acsomega.2c07092] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
Ni-doped ZnO nanowire arrays (Ni-ZnO NRs) with different Ni concentrations are grown on etched fluorine-doped tin oxide electrodes by the hydrothermal method. The Ni-ZnO NRs with a nickel precursor concentration of 0-12 at. % are adjusted to improve the selectivity and response of the devices. The NRs' morphology and microstructure are investigated by scanning electron microscopy and high-resolution transmission electron microscopy. The sensitive property of the Ni-ZnO NRs is measured. It is found that the Ni-ZnO NRs with an 8 at. % Ni precursor concentration have high selectivity for H2S and a large response of 68.9 at 250 °C compared to other gases including ethanol, acetone, toluene, and nitrogen dioxide. Their response/recovery time is 75/54 s. The sensing mechanism is discussed in terms of doping concentration, optimum operating temperature, gas type, and gas concentration. The enhanced performance is related to the regularity degree of the array and the doped Ni3+ and Ni2+ ions, which increases the active sites for oxygen and target gas adsorption on the surface.
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Affiliation(s)
- Shaoyu Liu
- Yunnan
Key Laboratory of Opto-electronic Information Technology, Yunnan Normal University, Kunming 650500, China
- Institute
of Physics and Electronic Information, Yunnan
Normal University, Kunming 650500, China
| | - Weiye Yang
- Yunnan
Key Laboratory of Opto-electronic Information Technology, Yunnan Normal University, Kunming 650500, China
- Institute
of Physics and Electronic Information, Yunnan
Normal University, Kunming 650500, China
| | - Lei Liu
- Yunnan
Key Laboratory of Opto-electronic Information Technology, Yunnan Normal University, Kunming 650500, China
- Institute
of Physics and Electronic Information, Yunnan
Normal University, Kunming 650500, China
| | - Huohuo Chen
- Yunnan
Key Laboratory of Opto-electronic Information Technology, Yunnan Normal University, Kunming 650500, China
- Institute
of Physics and Electronic Information, Yunnan
Normal University, Kunming 650500, China
| | - Yingkai Liu
- Yunnan
Key Laboratory of Opto-electronic Information Technology, Yunnan Normal University, Kunming 650500, China
- Institute
of Physics and Electronic Information, Yunnan
Normal University, Kunming 650500, China
- Key
Laboratory of Advanced Technique & Preparation for Renewable Energy
Materials, Ministry of Education, Yunnan
Normal University, Kunming 650500, China
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2
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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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3
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Wang T, Wang Y, Sun Q, Zheng S, Liu L, Li J, Hao J. Boosted interfacial charge transfer in SnO2/SnSe2 heterostructures: toward ultrasensitive room-temperature H2S detection. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01326a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Novel Sn atom cosharing SnO2/SnSe2 heterostructures with a high-quality interface were synthesized via in situ thermal oxidation of SnSe. The boosted interfacial charge transfer endows the material with excellent H2S sensing performance.
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Affiliation(s)
- Tingting Wang
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150001
- China
| | - You Wang
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150001
- China
- School of Materials Science and Engineering
| | - Quan Sun
- School of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Shengliang Zheng
- School of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Lizhao Liu
- Key Laboratory of Materials Modification by Laser
- Ion and Electron Beams (Dalian University of Technology)
- Ministry of Education
- Dalian 116024
- China
| | - Jialu Li
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Juanyuan Hao
- School of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- China
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4
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He PJ, Pu HX, Shao LM, Zhang H. Impact of co-landfill proportion of bottom ash and municipal solid waste composition on the leachate characteristics during the acidogenesis phase. WASTE MANAGEMENT (NEW YORK, N.Y.) 2017; 69:232-241. [PMID: 28818401 DOI: 10.1016/j.wasman.2017.08.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 08/08/2017] [Accepted: 08/09/2017] [Indexed: 06/07/2023]
Abstract
Incineration has become an important municipal solid waste (MSW) treatment strategy, and generates a large amount of bottom ash (BA). Although some BA is reused, much BA and pretreatment residues from BA recycling are disposed in landfill. When BA and MSW are co-landfilled together, acid neutralization capacity and alkaline earth metal dissolution of BA, as well as different components of MSW may change environmental conditions within the landfill, so the degradation of organic matter and the physical and chemical properties of leachate would be affected. In this study, the effect of co-landfilled BA and MSW on the leachate characteristics during the hydrolysis and acidogenesis phase was studied using different BA/MSW ratios and MSW compositions. The results showed that the co-landfill system increased leachate pH, electric conductivity and alkalinity. For MSW with a high content of degradable components, the release and degradation of total organic carbon (TOC) and volatile fatty acids (VFA) from MSW were promoted when the BA ratio by wet weight was less than 50%, and the biodegradability of leachate was improved. When the BA ratio exceeded 50%, the degradation of organic matters was inhibited. For MSW with low content of degradable components, when the proportion of BA was less than 20%, the release and degradation of TOC and VFA from MSW were promoted and alkalinity increased. When the BA ratio exceeded 20%, the degradation of organic matters was inhibited. The 50% BA ratio could improve the bio-treatability of leachate indicated by the leachate pH and C/N ratio. However, BA inhibited the release of nitrogen (TN and NH4+-N) at all BA ratios and MSW compositions. At the same time, the addition of BA increased the risk of leachate collection system clogging due to the dissolution and re-precipitation of alkaline earth metals contained in BA.
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Affiliation(s)
- Pin-Jing He
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China; Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, China; Centre for the Technology Research and Training on Household Waste in Small Towns & Rural Area, Ministry of Housing Urban-Rural Development, Shanghai 200092, China
| | - Hong-Xia Pu
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China; Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, China
| | - Li-Ming Shao
- Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, China; Centre for the Technology Research and Training on Household Waste in Small Towns & Rural Area, Ministry of Housing Urban-Rural Development, Shanghai 200092, China
| | - Hua Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China; Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, China.
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5
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Habeeb OA, Kanthasamy R, Ali GA, Sethupathi S, Yunus RBM. Hydrogen sulfide emission sources, regulations, and removal techniques: a review. REV CHEM ENG 2017. [DOI: 10.1515/revce-2017-0004] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
Abstract
This review highlights the recent technologies of H2S removal from wastewater in the petroleum refinery. H2S is a harmful, putrid, and hazardous gaseous compound. The main processes such as physicochemical, chemical, biological, and electrochemical methods were compared and discussed in detail. The effects of various parameters and adsorbent characteristics were highlighted and correlated with the adsorption capacities. Surface functional groups and porosity surface area play a crucial role in the process of single-phase and composite adsorbents. Composite materials impregnated with some metals showed high removal efficiencies. It was found that the adsorption process is the most relevant way for H2S removal due to its high removal efficiency, low cost, eco-friendly, and operational simplicity. This study serves as a useful guideline for those who are interested in H2S removal.
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Affiliation(s)
- Omar Abed Habeeb
- Faculty of Chemical and Natural Resources Engineering , Universiti Malaysia Pahang , Gambang , 26300 Kuantan , Malaysia
| | - Ramesh Kanthasamy
- Faculty of Chemical and Natural Resources Engineering , Universiti Malaysia Pahang , Gambang , 26300 Kuantan , Malaysia
| | - Gomaa A.M. Ali
- Faculty of Industrial Sciences and Technology , Universiti Malaysia Pahang , Gambang , 26300 Kuantan , Malaysia
- Chemistry Department , Faculty of Science, Al-Azhar University , Assiut 71524 , Egypt
- Al-Azhar Center of Nanoscience and Applications (ACNA) , Al-Azhar University , Assiut 71524 , Egypt
| | - Sumathi Sethupathi
- Department of Environmental Engineering , Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman , 31900 Perak , Malaysia
| | - Rosli Bin Mohd Yunus
- Faculty of Chemical and Natural Resources Engineering , Universiti Malaysia Pahang , Gambang , 26300 Kuantan , Malaysia
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6
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Zhang J, Kim H, Dubey B, Townsend T. Arsenic leaching and speciation in C&D debris landfills and the relationship with gypsum drywall content. WASTE MANAGEMENT (NEW YORK, N.Y.) 2017; 59:324-329. [PMID: 27838158 DOI: 10.1016/j.wasman.2016.10.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 09/23/2016] [Accepted: 10/19/2016] [Indexed: 06/06/2023]
Abstract
The effects of sulfide levels on arsenic leaching and speciation were investigated using leachate generated from laboratory-scale construction and demolition (C&D) debris landfills, which were simulated lysimeters containing various percentages of gypsum drywall. The drywall percentages in lysimeters were 0, 1, 6, and 12.4wt% (weight percent) respectively. With the exception of a control lysimeter that contained 12.4wt% of drywall, each lysimeter contained chromated copper arsenate (CCA) treated wood, which accounts for 10wt% of the C&D waste. During the period of study, lysimeters were mostly under anaerobic conditions. Leachate analysis results showed that sulfide levels increased as the percentage of drywall increased in landfills, but arsenic concentrations in leachate were not linearly correlated with sulfide levels. Instead, the arsenic concentrations decreased as sulfide increased up to approximately 1000μg/L, but had an increase with further increase in sulfide levels, forming a V-shape on the arsenic vs. sulfide plot. The analysis of arsenic speciation in leachate showed different species distribution as sulfide levels changed; the fraction of arsenite (As(III)) increased as the sulfide level increased, and thioarsenate anions (As(V)) were detected when the sulfide level further increased (>104μg/L). The formation of insoluble arsenic sulfide minerals at a lower range of sulfide and soluble thioarsenic anionic species at a higher range of sulfide likely contributed to the decreasing and increasing trend of arsenic leaching.
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Affiliation(s)
- Jianye Zhang
- Department of Environmental Engineering Sciences, University of Florida, P.O. Box 116450, Gainesville, FL 32611, USA
| | - Hwidong Kim
- Department of Environmental Science and Engineering, Gannon University, 109 University Square, Erie, PA 16541-0001, USA
| | - Brajesh Dubey
- Environmental Engineering and Management Division, Department of Civil Engineering, Indian Institute of Technology - Kharagpur, Kharagpur, West Bengal 721302, India
| | - Timothy Townsend
- Department of Environmental Engineering Sciences, University of Florida, P.O. Box 116450, Gainesville, FL 32611, USA.
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7
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Hydrogen sulfide (H 2S) emission control by aerobic sulfate reduction in landfill. Sci Rep 2016; 6:38103. [PMID: 27909309 PMCID: PMC5133566 DOI: 10.1038/srep38103] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 10/26/2016] [Indexed: 11/16/2022] Open
Abstract
H2S emissions from landfill sites resulting from sulfate reduction has become a serious human health and ecological safety issue. This study investigated H2S emission behavior and sulfate metabolism occurring in simulated landfills under different operating conditions. Under aerobic conditions, great attenuation of the original sulfate content (from around 6000 mg kg−1 dropped to below 800 mg kg−1) with corresponding accumulation of sulfides and elemental sulfur were observed, indicating that sulfate reduction processes were intense under such conditions. Analysis of the bacterial community in these landfills showed great abundance (1.10%) and diversity of sulfur reducing types, confirming their active involvement in this process. In particular, the total abundance of sulfate-reducing bacteria increased nearly 30 times under aerobic conditions, leading to the transformation of sulfate to sulfide and other reduced sulfur species. Although exposure to air promoted the accumulation of sulfide, it did not lead to an increase in H2S release in these landfills.
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8
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Sun M, Sun W, Barlaz MA. A batch assay to measure microbial hydrogen sulfide production from sulfur-containing solid wastes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 551-552:23-31. [PMID: 26874757 DOI: 10.1016/j.scitotenv.2016.01.161] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Revised: 01/18/2016] [Accepted: 01/24/2016] [Indexed: 06/05/2023]
Abstract
Large volumes of sulfur-containing wastes enter municipal solid waste landfills each year. Under the anaerobic conditions that prevail in landfills, oxidized forms of sulfur, primarily sulfate, are converted to sulfide. Hydrogen sulfide (H2S) is corrosive to landfill gas collection and treatment systems, and its presence in landfill gas often necessitates the installation of expensive removal systems. For landfill operators to understand the cost of managing sulfur-containing wastes, an estimate of the H2S production potential is needed. The objective of this study was to develop and demonstrate a biochemical sulfide potential (BSP) test to measure the amount of H2S produced by different types of sulfur-containing wastes in a relatively fast (30days) and inexpensive (125mL serum bottles) batch assay. This study confirmed the toxic effect of H2S on both sulfate reduction and methane production in batch systems, and demonstrated that removing accumulated H2S by base adsorption was effective for mitigating inhibition. H2S production potentials of coal combustion fly ash, flue gas desulfurization residual, municipal solid waste combustion ash, and construction and demolition waste were determined in BSP assays. After 30days of incubation, most of the sulfate in the wastes was converted to gaseous or aqueous phase sulfide, with BSPs ranging from 0.8 to 58.8mLH2S/g waste, depending on the chemical composition of the samples. Selected samples contained solid phase sulfide which contributed to the measured H2S yield. A 60day incubation in selected samples resulted in 39-86% additional sulfide production. H2S production measured in BSP assays was compared with that measured in simulated landfill reactors and that calculated from chemical analyses. H2S production in BSP assays and in reactors was lower than the stoichiometric values calculated from chemical composition for all wastes tested, demonstrating the importance of assays to estimate the microbial sulfide production potential of sulfur-containing wastes.
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Affiliation(s)
- Mei Sun
- Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Campus Box 7908, Raleigh, NC, USA.
| | - Wenjie Sun
- Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Campus Box 7908, Raleigh, NC, USA; Department of Civil and Environmental Engineering, Southern Methodist University, PO Box 750340, Dallas, TX, USA.
| | - Morton A Barlaz
- Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Campus Box 7908, Raleigh, NC, USA.
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Guo Z, Chen G, Zeng G, Liu L, Zhang C. Metal oxides and metal salt nanostructures for hydrogen sulfide sensing: mechanism and sensing performance. RSC Adv 2015. [DOI: 10.1039/c5ra10394k] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Metal oxides and metal salt nanostructures for hydrogen sulfide sensing based on conductivity response.
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Affiliation(s)
- Zhi Guo
- College of Environmental Science and Engineering
- Hunan University
- Changsha 410082
- P.R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University)
| | - Guiqiu Chen
- College of Environmental Science and Engineering
- Hunan University
- Changsha 410082
- P.R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University)
| | - Guangming Zeng
- College of Environmental Science and Engineering
- Hunan University
- Changsha 410082
- P.R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University)
| | - Lingzhi Liu
- College of Environmental Science and Engineering
- Hunan University
- Changsha 410082
- P.R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University)
| | - Chang Zhang
- College of Environmental Science and Engineering
- Hunan University
- Changsha 410082
- P.R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University)
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