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Bayout A, Cammarano C, Costa IM, Veryasov G, Hulea V. Management of methyl mercaptan contained in waste gases - an overview. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34112-0. [PMID: 38963632 DOI: 10.1007/s11356-024-34112-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 06/20/2024] [Indexed: 07/05/2024]
Abstract
Methyl mercaptan is a typical volatile organosulfur pollutant contained in many gases emitted by urban waste treatment, various industries, natural gas handling, refining processes, and energy production. This work is a comprehensive overview of the scientific and practical aspects related to the management of methyl mercaptan pollution. The main techniques, including absorption, adsorption, oxidation, and biological treatments, are examined in detail. For each method, its capability as well as the technical advantages and drawbacks have been highlighted. The emerging methods developed for the removal of methyl mercaptan from natural gas are also reviewed. These methods are based on the catalytic conversion of CH3SH to hydrocarbons and H2S.
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Affiliation(s)
- Abdelilah Bayout
- Charles Gerhardt Institute of Montpellier, University of Montpellier, CNRS, ENSCM, 1919 Rte de Mende, 34293, Montpellier Cedex 5, France
- TotalEnergies, One Tech, Zone Industrielle C, 7181, Feluy, Belgium
| | - Claudia Cammarano
- Charles Gerhardt Institute of Montpellier, University of Montpellier, CNRS, ENSCM, 1919 Rte de Mende, 34293, Montpellier Cedex 5, France
- TotalEnergies, One Tech, Zone Industrielle C, 7181, Feluy, Belgium
| | - Izabel Medeiros Costa
- Charles Gerhardt Institute of Montpellier, University of Montpellier, CNRS, ENSCM, 1919 Rte de Mende, 34293, Montpellier Cedex 5, France
- TotalEnergies, One Tech, Zone Industrielle C, 7181, Feluy, Belgium
| | - Gleb Veryasov
- Charles Gerhardt Institute of Montpellier, University of Montpellier, CNRS, ENSCM, 1919 Rte de Mende, 34293, Montpellier Cedex 5, France
- TotalEnergies, One Tech, Zone Industrielle C, 7181, Feluy, Belgium
| | - Vasile Hulea
- Charles Gerhardt Institute of Montpellier, University of Montpellier, CNRS, ENSCM, 1919 Rte de Mende, 34293, Montpellier Cedex 5, France.
- TotalEnergies, One Tech, Zone Industrielle C, 7181, Feluy, Belgium.
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Sarfaraz Q, Drescher GL, Zafar M, Shah MN, Zhao F, Danish S, Mustafa AEZMA, Elshikh MS, Souza da Silva L. Nutrient retention after crop harvest in a typic hapludults amended with biochar types under no-tillage system. Sci Rep 2024; 14:5126. [PMID: 38429337 PMCID: PMC10907612 DOI: 10.1038/s41598-024-55430-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 02/23/2024] [Indexed: 03/03/2024] Open
Abstract
The utilization of biochar's as soil amendments for enhancing nutrient retention in subsoils present potential limitations. To address this issue, we conducted a greenhouse experiment to assess the effects of various biochar's derived from animal manures (swine manure, poultry litter, cattle manure) and plant residues (rice straw, soybean straw, corn straw) when applied to surface of an acidic soil. Our study focused on wheat crops under a no-tillage system, with a subsequent evaluation of the residual impacts on soybeans. The experimental design involved the application of biochar's at different rates i.e. 10 and 20 Mg ha-1, followed by the assessment of their influence on NPK levels, pH, and exchangeable Al in stratified soil layers (0-5, 5-10, 10-15, and 15-25 cm). Furthermore, we investigated the interplay between biochar doses and the application of nitrogen (N) in the top 5 cm of soil, specifically examining NO 3 - , NH 4 + , P and K levels. Our findings revealed that in the top 5 cm of soil, biochar doses and N application significantly affected NO 3 - , NH 4 + , P and K concentrations. However, in deeper soil layers, no significant differences were observed among biochar doses with or without N application. Interestingly, K levels were impacted throughout all soil depths, regardless of the presence or absence of N application. Moreover, biochar application up to a 5 cm depth induced favorable changes in soil pH and reduced exchangeable Al. In contrast, deeper layers experienced a decrease in soil pH and an increase in exchangeable Al following biochar treatment. In conclusion, our study demonstrates that biochar's can effectively retain NPK nutrients, enhance soil pH, and decrease exchangeable Al, independent of the type and dosage of application under a no-tillage system. Nonetheless, the efficacy of biochar amendments may vary with soil depth and type of nutrient, warranting careful consideration for maximizing their benefits in sustainable agricultural practices.
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Affiliation(s)
- Qamar Sarfaraz
- Department of Soil Science, Lasbela University of Agriculture, Water and Marine Sciences, Lasbela, Uthal Balochistan, Pakistan.
- Federal University of Santa Maria, 1000 Roraima Ave, Santa Maria, RS, 97105-900, Brazil.
| | - Gerson Laerson Drescher
- Federal University of Santa Maria, 1000 Roraima Ave, Santa Maria, RS, 97105-900, Brazil
- University of Arkansas, Fayetteville, USA
| | - Mohsin Zafar
- Department of Environmental Sciences, Mirpur University of Science and Technology, Mirpur, AJK, Pakistan
| | - Muhammad Nadeem Shah
- Department of Agriculture, Government College University Lahore, Lahore, Punjab, Pakistan
- North Florida Research and Education Center, University of Florida, 155 Research Road, Quincy, FL, USA
| | - Fengliang Zhao
- Environment and Plant Protection Research Institute, Chinese Academy of Tropical Agricultural Science, Haikou, China
| | - Subhan Danish
- Department of Soil Science, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Punjab, Pakistan.
| | - Abd El-Zaher M A Mustafa
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, 11451, Riyadh, Saudi Arabia
| | - Mohamed S Elshikh
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, 11451, Riyadh, Saudi Arabia
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Li W, Li J, Duong TD, Sapchenko SA, Han X, Humby JD, Whitehead GFS, Victórica-Yrezábal IJ, da Silva I, Manuel P, Frogley MD, Cinque G, Schröder M, Yang S. Adsorption of Sulfur Dioxide in Cu(II)-Carboxylate Framework Materials: The Role of Ligand Functionalization and Open Metal Sites. J Am Chem Soc 2022; 144:13196-13204. [PMID: 35848823 PMCID: PMC9345647 DOI: 10.1021/jacs.2c03280] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
The development of efficient sorbent materials for sulfur
dioxide
(SO2) is of key industrial interest. However, due to the
corrosive nature of SO2, conventional porous materials
often exhibit poor reversibility and limited uptake toward SO2 sorption. Here, we report high adsorption of SO2 in a series of Cu(II)-carboxylate-based metal–organic framework
materials. We describe the impact of ligand functionalization and
open metal sites on the uptake and reversibility of SO2 adsorption. Specifically, MFM-101 and MFM-190(F) show fully reversible
SO2 adsorption with remarkable capacities of 18.7 and 18.3
mmol g–1, respectively, at 298 K and 1 bar; the
former represents the highest reversible uptake of SO2 under
ambient conditions among all porous solids reported to date. In situ neutron powder diffraction and synchrotron infrared
microspectroscopy enable the direct visualization of binding domains
of adsorbed SO2 molecules as well as host–guest
binding dynamics. We have found that the combination of open Cu(II)
sites and ligand functionalization, together with the size and geometry
of metal–ligand cages, plays an integral role in the enhancement
of SO2 binding.
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Affiliation(s)
- Weiyao Li
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K
| | - Jiangnan Li
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K
| | - Thien D Duong
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K
| | - Sergei A Sapchenko
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K
| | - Xue Han
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K
| | - Jack D Humby
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K
| | | | | | - Ivan da Silva
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Oxfordshire OX11 0QX, U.K
| | - Pascal Manuel
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Oxfordshire OX11 0QX, U.K
| | - Mark D Frogley
- Diamond Light Source, Harwell Science and Innovation Campus, Oxfordshire OX11 0DE, U.K
| | - Gianfelice Cinque
- Diamond Light Source, Harwell Science and Innovation Campus, Oxfordshire OX11 0DE, U.K
| | - Martin Schröder
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K
| | - Sihai Yang
- Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K
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Ahmad Z, Mosa A, Zhan L, Gao B. Biochar modulates mineral nitrogen dynamics in soil and terrestrial ecosystems: A critical review. CHEMOSPHERE 2021; 278:130378. [PMID: 33838428 DOI: 10.1016/j.chemosphere.2021.130378] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/10/2021] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
Biochar, over the last two decades, has become the focal point of agro-environmental research given its unique functionality, cost-effectiveness and recyclability potentials. It has been studied intensively as an efficient scavenger for the decontamination of several organic and inorganic pollutants. However, the ability of biochar to modulate nitrogen (N) dynamics in soil and terrestrial ecosystems remains controversial. This work deliberates on the premise that biochar functionality enables maximizing N use efficiency by reducing the potential losses induced by volatilization/emission and runoff/leaching as well as stimulating available N inputs derived from symbiotic and nonsymbiotic biological nitrogen fixation (BNF) and N mineralization/retention. For this purpose, we carried out a critical review on different intriguing dimensions surrounding the potentiality of biochar to modulate the complicated reactions of soil N cycle with emphasis on its pros and cons. Previous studies in the literature have shown contradictory results with a noticeable significant effect of biochar toward stimulating available N inputs and reducing its losses under short-term laboratory experimentations. However, long-term field investigations have indicated minimal or negative effects in this regard. Furthermore, some of the experimentations lack appropriate controls or fail to account for inputs or losses associated with biochar particles. It is thus of great importance to contextualise lab-scale experimentations based on real field data to provide a holistic approach for understanding the complicated reactions responsible for modulating N cycle in the charosphere. Additionally, biochar functionalization should be highlighted in the foreseeable research to develop fit-for-purpose forms tailored in agro-environmental applications.
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Affiliation(s)
- Zahoor Ahmad
- Department of Soil and Climate Sciences, Faculty of Agricultural Sciences, The University of Haripur, KPK, Pakistan.
| | - Ahmed Mosa
- Soils Department, Faculty of Agriculture, Mansoura University, Mansoura, 35516, Egypt
| | - Lu Zhan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, United States
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5
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Monitoring of Remaining Thiophenic Compounds in Liquid Fuel Desulphurization Studies Using a Fast HPLC-UV Method. SEPARATIONS 2021. [DOI: 10.3390/separations8040048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Thiophenic compounds constitute a class of sulfur compounds derived by thiophene, containing at least one thiophenic ring. Their presence in fuels (crude oil, etc.) is important and can reach 3% m/m. The combustion of fuels leads to the formation of sulfur oxides a severe source of environmental pollution issues, such as acid rain with adverse effects both to humans and to the environment. To reduce such problems, the EU and other regulatory agencies worldwide set increasingly stringent regulations for sulfur content in fuels resulting in the necessity for intense desulphurization processes. However, most of these processes are inefficient in the total removal of sulfur compounds. Therefore, thiophenic compounds such as benzothiophenes and dibenzothiophenes are still present in heavier fractions of petroleum, therefore, their determination is of great importance. Until now, all HPLC methods applied in similar studies use gradient elution programs that may last more than 25 min with no validation results provided. To fill this gap, the aim of the present study was to develop and validate a simple and fast HPLC-UV method in order to be used as a useful monitoring tool in the evaluation studies of novel desulfurization technologies by means of simultaneous determination of dibenzothiophene (DBT) and 4,6-dimethyl-dibenzothiophene and dibenzothiophene sulfone in the desulfurization effluents.
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Sun X, Zhong T, Zhang L, Zhang K, Wu W. Reducing ammonia volatilization from paddy field with rice straw derived biochar. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 660:512-518. [PMID: 30640118 DOI: 10.1016/j.scitotenv.2018.12.450] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 12/09/2018] [Accepted: 12/29/2018] [Indexed: 06/09/2023]
Abstract
Ammonia (NH3) volatilization is a major loss of nitrogen fertilizer in paddy fields. The incorporation of straw or biochar has been considered to be the alternative options for soil improvement and agriculture sustainability. A field experiment was conducted to evaluate the potential role of rice straw and rice straw derived biochar in controlling NH3 volatilization according to the conventional nitrogen fertilizer level (urea, 270 kg N ha-1) during one rice (Oryza sativa L., cv. Xiushui134) growing season. Four treatments comprised rice straw at the rate of 8 t ha-1 (RS); rice straw derived biochar at the rate of 2.8 t ha-1 (RSBL); rice straw derived biochar at the rate of 22.5 t ha-1 (RSBH) and a control (CK). Compared to straw application, biochar incorporation reduced the cumulative NH3 volatilization (about 20%) from paddy fields significantly (p < 0.05), promoted rice yields and plant N aboveground as well as increased the abundance of ammonia oxidation amoA genes. In contrast with the control, the ratios of NH3-N to total N input for RS, RSBL and RSBH declined significantly 4.15%, 4.40% and 11.12%, respectively (p < 0.05). Reduced NH3 volatilization in RSB treatments were mainly attributed to the decrease of NH4+-N concentration in the surface water, which could resulted from the enhancement of rice growth and the promotion of ammonia oxidation in soil. The increase of soil pH and soil CEC with biochar amendment played important roles in nitrogen retention and nitrogen cycle in soil. These results indicated that the incorporation of rice straw derived biochar instead of rice straw could be a promising approach to controlling NH3 volatilization and improving rice yield.
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Affiliation(s)
- Xue Sun
- Institute of Environmental Science and Technology, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory for Water Pollution Control and Environmental Safety, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Ting Zhong
- Institute of Environmental Science and Technology, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory for Water Pollution Control and Environmental Safety, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Lu Zhang
- Institute of Environmental Science and Technology, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory for Water Pollution Control and Environmental Safety, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Kangshu Zhang
- Institute of Environmental Science and Technology, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory for Water Pollution Control and Environmental Safety, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Weixiang Wu
- Institute of Environmental Science and Technology, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory for Water Pollution Control and Environmental Safety, 866 Yuhangtang Road, Hangzhou 310058, China.
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8
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Neusatz Guilhen S, Rovani S, Pitol Filho L, Alves Fungaro D. Kinetic study of uranium removal from aqueous solutions by macaúba biochar. CHEM ENG COMMUN 2018. [DOI: 10.1080/00986445.2018.1533467] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Sabine Neusatz Guilhen
- Instituto de Pesquisas Energéticas e Nucleares (IPEN - CNEN/SP), Cidade Universitária – CEP, São Paulo, SP, Brazil
| | - Suzimara Rovani
- Instituto de Pesquisas Energéticas e Nucleares (IPEN - CNEN/SP), Cidade Universitária – CEP, São Paulo, SP, Brazil
| | | | - Denise Alves Fungaro
- Instituto de Pesquisas Energéticas e Nucleares (IPEN - CNEN/SP), Cidade Universitária – CEP, São Paulo, SP, Brazil
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Mandal S, Thangarajan R, Bolan NS, Sarkar B, Khan N, Ok YS, Naidu R. Biochar-induced concomitant decrease in ammonia volatilization and increase in nitrogen use efficiency by wheat. CHEMOSPHERE 2016; 142:120-127. [PMID: 25959224 DOI: 10.1016/j.chemosphere.2015.04.086] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Revised: 04/24/2015] [Accepted: 04/27/2015] [Indexed: 06/04/2023]
Abstract
Ammonia (NH3) volatilization is a major nitrogen (N) loss from the soil, especially under tropical conditions, NH3 volatilization results in low N use efficiency by crops. Incubation experiments were conducted using five soils (pH 5.5-9.0), three N sources such as, urea, di-ammonium phosphate (DAP), and poultry manure (PM) and two biochars such as, poultry litter biochar (PL-BC) and macadamia nut shell biochar (MS-BC). Ammonia volatilization was higher at soil with higher pH (pH exceeding 8) due to the increased hydroxyl ions. Among the N sources, urea recorded the highest NH3 volatilization (151.6 mg kg(-1)soil) followed by PM (124.2 mg kg(-1)soil) and DAP (99 mg kg(-1)soil). Ammonia volatilization was reduced by approximately 70% with PL-BC and MS-BC. The decreased NH3 volatilization with biochars is attributed to multiple mechanisms such as NH3 adsorption/immobilization, and nitrification. Moreover, biochar increased wheat dry weight and N uptake as high as by 24.24% and 76.11%, respectively. This study unravels the immense potential of biochar in decreasing N volatilization from soils and simultaneously improving use efficiency by wheat.
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Affiliation(s)
- Sanchita Mandal
- CERAR, Centre for Environmental Risk Assessment and Remediation, Building-X, University of South Australia, Mawson Lakes, SA 5095, Australia.
| | - Ramya Thangarajan
- CERAR, Centre for Environmental Risk Assessment and Remediation, Building-X, University of South Australia, Mawson Lakes, SA 5095, Australia; CRC CARE, Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, P.O. Box 486, Salisbury, SA 5106, Australia
| | - Nanthi S Bolan
- CERAR, Centre for Environmental Risk Assessment and Remediation, Building-X, University of South Australia, Mawson Lakes, SA 5095, Australia; CRC CARE, Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, P.O. Box 486, Salisbury, SA 5106, Australia
| | - Binoy Sarkar
- CERAR, Centre for Environmental Risk Assessment and Remediation, Building-X, University of South Australia, Mawson Lakes, SA 5095, Australia; CRC CARE, Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, P.O. Box 486, Salisbury, SA 5106, Australia
| | - Naser Khan
- CERAR, Centre for Environmental Risk Assessment and Remediation, Building-X, University of South Australia, Mawson Lakes, SA 5095, Australia; CRC CARE, Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, P.O. Box 486, Salisbury, SA 5106, Australia; NBE, School of Natural and Built Environments, University of South Australia, Mawson Lakes, SA, Australia
| | - Yong Sik Ok
- Korea Biochar Research Center & Department of Biological Environment, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Ravi Naidu
- CERAR, Centre for Environmental Risk Assessment and Remediation, Building-X, University of South Australia, Mawson Lakes, SA 5095, Australia; CRC CARE, Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, P.O. Box 486, Salisbury, SA 5106, Australia; Global Institute for Environmental Remediation, University of Newcastle, Callaghan, NSW, Australia
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Bandosz TJ. Nanoporous Carbons: Looking Beyond Their Perception as Adsorbents, Catalyst Supports and Supercapacitors. CHEM REC 2015; 16:205-18. [PMID: 26663696 DOI: 10.1002/tcr.201500231] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Indexed: 01/19/2023]
Abstract
The discovery of carbon nanoforms, and especially graphene, has opened up new directions of science and technology. Many applications are based on the unique properties of graphene, such as its high electrical and thermal conductivity, strength, flexibility, photoactivity and transparency. Inspired by the emerging graphene science, we directed our efforts to the exploration of new applications of nanoporous (microporous) carbons. Their matrix is built of distorted graphene layers, between which pores with sizes ranging from a fraction of a nanometer to hundreds of nanometers exist. This is a very unique feature of nanoporous carbons resulting in their developed surface areas. Moreover, there are vast possibilities to modify the surface chemistry of carbons and thus their surface properties. Even though the traditional applications of porous carbons focus mainly on adsorption and separation, we decided to explore them as photocatalysts, oxygen reduction catalysts and sensors. Related to their visible-light activity, their possible application in solar energy harvesting is also indicated. This Personal Account presents our paths leading to the exploration of these directions, describing the results collected and difficulties encountered, along with the challenges remaining to be addressed.
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Affiliation(s)
- Teresa J Bandosz
- Department of Chemistry, The City College of New York, 160 Convent Ave, New York, NY, 10031, USA
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Arcibar-Orozco JA, Wallace R, Mitchell JK, Bandosz TJ. Role of surface chemistry and morphology in the reactive adsorption of H₂S on iron (hydr)oxide/graphite oxide composites. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:2730-2742. [PMID: 25675243 DOI: 10.1021/la504563z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Composites of magnetite and two-line ferrihydrite with graphite oxide (GO) were synthesized and tested as hydrogen sulfide adsorbents. Exhausted and initial composites were characterized by the adsorption of nitrogen, X-ray diffraction, potentiometric titration, thermal analysis, and FTIR. The addition of GO increased the surface area of the composites due to the formation of new micropores. The extent of the increase depended on the nature of the iron (hydr)oxide and the content of GO. The addition of GO did not considerably change the crystal structure but increased the number of acidic functional groups. While for the magnetite composites an increase in the H2S adsorption capacity after GO addition was found, the opposite effect was recorded for the ferrihydrite composites. That increase in the adsorption capacity was linked to the affinity of the composites to adsorb water in mesopores of specific sizes in which the reaction with basic surface groups takes place. Elemental sulfur and ferric and ferrous sulfates were detected on the surface of the exhausted samples. A redox reactive adsorption mechanism is proposed to govern the retention of hydrogen sulfide on the surface of the composites. The incorporation of GO enhances the chemical retention of H2S due to the incorporation of OH reactive groups and an increase in surface heterogeneity.
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Affiliation(s)
- Javier A Arcibar-Orozco
- Department of Chemistry, The City College of New York , New York, New York 10031, United States
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Mabayoje O, Seredych M, Bandosz TJ. Enhanced reactive adsorption of hydrogen sulfide on the composites of graphene/graphite oxide with copper (hydr)oxychlorides. ACS APPLIED MATERIALS & INTERFACES 2012; 4:3316-3324. [PMID: 22667349 DOI: 10.1021/am300702a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Composites of copper (hydr)oxychlorides with graphite oxide or graphene were synthesized and used as adsorbents of hydrogen sulfide at dynamic conditions at ambient temperatures. The materials were extensively characterized before and after adsorption in order to link their performance to the surface features. X-ray diffraction, FTIR, thermal analysis, TEM, SEM/EDX, and adsorption of nitrogen were used. It was found that the composite with graphene has the most favorable surface features enhancing reactive adsorption of hydrogen sulfide. The presence of moisture in the H2S stream has a positive effect on the removal process owing to the dissociation process. H2S is retained on the surface via a direct replacement of OH groups and via acid-base reactions with the copper (hydr)oxide. Highly dispersed reduced copper species on the surface of the composite with graphene enhance activation of oxygen and cause formation of sulfites and sulfates. Higher conductivity of the graphene phase than that of graphite oxide helps in electron transfer in redox reactions.
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Affiliation(s)
- Oluwaniyi Mabayoje
- Department of Chemistry, The City College of New York , 160 Convent Avenue, New York, New York 10031, United States
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Seredych M, Mabayoje O, Bandosz TJ. Visible-light-enhanced interactions of hydrogen sulfide with composites of zinc (oxy)hydroxide with graphite oxide and graphene. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:1337-1346. [PMID: 22181932 DOI: 10.1021/la204277c] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Composites of zinc(oxy)hydroxide-graphite oxide and of zinc(oxy)hydroxide-graphene were used as adsorbents of hydrogen sulfide under ambient conditions. The initial and exhausted samples were characterized by XRD, FTIR, potentiometric titration, EDX, thermal analysis, and nitrogen adsorption. An increase in the amount of H(2)S adsorbed/oxidized on their surfaces in comparison with that of pure Zn(OH)(2) is linked to the structure of the composite, the relative number of terminal hydroxyls, and the kind of graphene-based phase used. Although terminal groups are activated by a photochemical process, the graphite oxide component owing to the chemical bonds with the zinc(oxy)hydroxide phase and conductive properties helps in electron transfer, leading to more efficient oxygen activation via the formation of superoxide ions. Elemental sulfur, zinc sulfide, sulfite, and sulfate are formed on the surface. The formation of sulfur compounds on the surface of zinc(oxy)hydroxide during the course of the breakthrough experiments and thus Zn(OH)(2)-ZnS heterojunctions can also contribute to the increased surface activity of our materials. The results show the superiority of graphite oxide in the formation of composites owing to its active surface chemistry and the possibility of interface bond formation, leading to an increase in the number of electron-transfer reactions.
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Affiliation(s)
- Mykola Seredych
- Department of Chemistry, The City College of New York, 160 Convent Avenue, New York, New York 10031, USA
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Petit C, Bandosz TJ. Removal of ammonia from air on molybdenum and tungsten oxide modified activated carbons. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2008; 42:3033-3039. [PMID: 18497162 DOI: 10.1021/es703056t] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Microporous coconut-based activated carbon was impregnated with solutions of ammonium metatungstate or ammonium molybdate and then calcined in air in order to convert the salts into their corresponding oxides. The surface of those materials was characterized using adsorption of nitrogen, potentiometric titration, Fourier-transform infrared spectroscopy, X-ray diffraction, and thermal analysis. The results indicated a significant increase in surface acidity related to the presence of tungsten or molybdenum oxides. On the materials obtained, adsorption of ammonia from either dry or moist air was carried out. The oxides distributed on the surface provided Lewis and/or Brønsted centers for interactions with ammonia molecules or ammonium ions. Water on the surface of carbon or in the gas phase increased the amount of ammonia adsorbed via involvement of Brønsted-type interactions and/or by leading to the formation of molybdate or tungstate salts on the surface. Although the amount of ammonia adsorbed is closely related to the number of moles of oxides and their acidic centers, the carbon surface also contributes to the adsorption via providing small pores where ammonia can be dissolved in the water film.
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Affiliation(s)
- Camille Petit
- Department of Chemistry, The City College of New York, New York 10031, USA
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Seredych M, Bandosz TJ. Template-derived mesoporous carbons with highly dispersed transition metals as media for the reactive adsorption of dibenzothiophene. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:6033-41. [PMID: 17439255 DOI: 10.1021/la063291j] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Mesoporous carbons with highly dispersed copper, cobalt, and iron were obtained from an organic polymer within amorphous silica powder, alumina, and zeolite 13X. The materials were characterized using the adsorption of nitrogen, potentiometric titration, and elemental analysis. The small metal content (less than 1%) and its chelation in the precursor polymers ensure a high dispersion of metallic centers. The materials obtained are mainly mesoporous but differ significantly in their porosity and surface chemistry, which is linked to the effect of template constraints and chemistry and the kind of metal and is related to the differences in the carbonization mechanism. On the carbon obtained, the adsorption of dibenzothiophene (DBT) from hexane was carried out. The high capacities (up to 130 mg S/g) obtained were linked to the high volume of mesopores and specific interactions of DBT with surface acidic groups and strong interactions of metals with dibenzothiophene via S-M sigma bonds or, in the case of copper, via interaction of metals with disturbed pi electrons of aromatic rings of DBT.
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Affiliation(s)
- Mykola Seredych
- Department of Chemistry, The City College of New York, New York, New York 10031, USA
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