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Chen H, Wu W, Chen D, Feng Y. Comparative study of carbon-deNO x process by different sewage sludge chars. CHEMOSPHERE 2023; 318:137981. [PMID: 36716939 DOI: 10.1016/j.chemosphere.2023.137981] [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: 06/22/2022] [Revised: 12/10/2022] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
Sewage sludge char (SC) reduces NO to N2 at high temperatures thus acting as a potential reducing agent in flue gas cleaning systems. However, SC needs to be modified to enhance the carbon-deNOx performance. In this study, coal char (CC) and different types of SCs, i.e., original (SC-R), pyrolytic volatiles activated (SC-V) and KOH activated (SC-K), were compared in terms of their carbon-deNOx performance, including NO removal rate and secondary pollution discharged. The results showed that when the oxygen content in the flue gas was 5-6%, the carbon-deNOx efficiency of the three types of SCs was greater than 70%, which was higher than that of the CC. SC-V has lower emissions of CO and gaseous nitrogen-containing compounds (NH3, HNCO, HCN) among the three types of SCs. For the oxygen content of 8-11% in the flue gases, the NO conversion performance was found in the order of SC-K > SC-R > SC-V > CC. The physical and chemical characterization of activated carbon shows that pyrolytic-volatile activation increases the ratio of C-O and C=O functional groups on its surface of SC-V, which not only facilitates the chemisorption of NO but are also easily converted under high oxygen conditions. SC-V is found as a suitable reductant for carbon-deNOx within the temperature range of 300-350 °C.
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Affiliation(s)
- Hui Chen
- School of Mechanical Engineering, Shanghai Dianji University, Shanghai 201306, China; Thermal & Environmental Engineering Institute, Tongji University, Shanghai 200092, China
| | - Wei Wu
- School of Mechanical Engineering, Shanghai Dianji University, Shanghai 201306, China
| | - Dezhen Chen
- Thermal & Environmental Engineering Institute, Tongji University, Shanghai 200092, China
| | - Yuheng Feng
- Thermal & Environmental Engineering Institute, Tongji University, Shanghai 200092, China.
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2
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Pereira D, Gil MV, Esteves VI, Silva NJO, Otero M, Calisto V. Ex-situ magnetic activated carbon for the adsorption of three pharmaceuticals with distinct physicochemical properties from real wastewater. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130258. [PMID: 36351346 DOI: 10.1016/j.jhazmat.2022.130258] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 09/28/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
Pharmaceuticals are able to evade conventional wastewater treatments and therefore, are recurrently found in the environment with proven potential to cause harm to human and wildlife. Adsorption onto activated carbon (AC) is a promising complement. However, AC production from non-renewable resources and its difficult after-use recuperation are prohibitive. Hence, a waste-based magnetic activated carbon (MAC) was produced from paper mill sludge, via an ex-situ synthesis, for the adsorptive removal of carbamazepine (CBZ), sulfamethoxazole (SMX) and ibuprofen (IBU) from ultrapure water and wastewater. The MAC was obtained through the promotion of electrostatic interactions between magnetic and activated carbon particles in a water suspension at controlled pH between the points of zero charge of both surfaces. The optimized condition (MACX3) presented remarkable properties regarding specific surface area (SBET=795 m2 g-1) and saturation magnetization (MS=19 emu g-1). Kinetic and equilibrium adsorption studies were performed under batch conditions. Adsorption equilibrium was reached in up to 30 min for all pharmaceuticals in both matrices, proving the low dependence on the adsorbate and the broad applicability of MACX3 in pharmaceutical adsorption. Regarding equilibrium experiments, high Langmuir maximum adsorption capacities (qm) were achieved in ultrapure water (up to 711 ± 40 µmol g-1). Equilibrium studies in wastewater revealed a decay in qm when compared to ultrapure water: 28% for CBZ (468 ± 20 µmol g-1 (111 ± 5 mg g-1)), 78% for SMX (145 ± 10 µmol g-1 (37 ± 3 mg g-1)) and 62% for IBU (273 ± 8 µmol g-1 (56 ± 2 mg g-1)), attributed to the wastewater pH, which dictates the speciation of the pharmaceuticals and controls electrostatic interactions between pharmaceuticals and MAC, and to competition effects by organic matter. It was demonstrated the promising applicability of a waste-based ex-situ MAC, rapidly retrievable from water, as an alternative tertiary wastewater treatment for pharmaceuticals removal.
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Affiliation(s)
- Diogo Pereira
- Department of Chemistry & CESAM, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - María V Gil
- Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC, Calle Francisco Pintado Fe 26, 33011 Oviedo, Spain
| | - Valdemar I Esteves
- Department of Chemistry & CESAM, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Nuno J O Silva
- Department of Physics & CICECO, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Marta Otero
- Department of Applied Chemistry and Physics, Universidad de León, Campus de Vegazana, 24071 León, Spain
| | - Vânia Calisto
- Department of Chemistry & CESAM, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
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3
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Alegbeleye O, Daramola OB, Adetunji AT, Ore OT, Ayantunji YJ, Omole RK, Ajagbe D, Adekoya SO. Efficient removal of antibiotics from water resources is a public health priority: a critical assessment of the efficacy of some remediation strategies for antibiotics in water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:56948-57020. [PMID: 35716301 DOI: 10.1007/s11356-022-21252-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 05/30/2022] [Indexed: 05/27/2023]
Abstract
This review discusses the fundamental principles and mechanism of antibiotic removal from water of some commonly applied treatment techniques including chlorination, ozonation, UV-irradiation, Fenton processes, photocatalysis, electrochemical-oxidation, plasma, biochar, anaerobicdigestion, activated carbon and nanomaterials. Some experimental shortfalls identified by researchers such as certain characteristics of degradation agent applied and the strategies explored to override the identified limitations are briefly discussed. Depending on interactions of a range of factors including the type of antibiotic compound, operational parameters applied such as pH, temperature and treatment time, among other factors, all reviewed techniques can eliminate or reduce the levels of antibiotic compounds in water to varying extents. Some of the reviewed techniques such as anaerobic digestion generally require longer treatment times (up to 360, 193 and 170 days, according to some studies), while others such as photocatalysis achieved degradation within short contact time (within a minimum of 30, but up to 60, 240, 300 and 1880 minutes, in some cases). For some treatment techniques such as ozonation and Fenton, it is apparent that subjecting compounds to longer treatment times may improve elimination efficiency, whereas for some other techniques such as nanotechnology, application of longer treatment time generally meant comparatively minimal elimination efficiency. Based on the findings of experimental studies summarized, it is apparent that operational parameters such as pH and treatment time, while critical, do not exert sole or primary influence on the elimination percentage(s) achieved. Elimination efficiency achieved rather seems to be due more to the force of a combination of several factors.
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Affiliation(s)
- Oluwadara Alegbeleye
- Department of Food Science and Nutrition, University of Campinas (UNICAMP), Rua Monteiro Lobato, 80, Campinas, SP, 13083-862, Brazil.
| | | | - Adewole Tomiwa Adetunji
- Department of Agriculture, Faculty of Applied Sciences, Cape Peninsula University of Technology, Wellington, Western Cape, 7654, South Africa
| | - Odunayo T Ore
- Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Yemisi Juliet Ayantunji
- Department of Microbiology, Obafemi Awolowo University, Ile-Ife, Nigeria
- Advanced Space Technology Applications Laboratory, Cooperative Information Network, National Space Research and Development Agency, Ile-Ife, P.M.B. 022, Nigeria
| | - Richard Kolade Omole
- Department of Microbiology, Obafemi Awolowo University, Ile-Ife, Nigeria
- Microbiology Unit, Department of Applied Sciences, Osun State College of Technology, Esa-Oke, Nigeria
| | - Damilare Ajagbe
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Oklahoma, USA
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4
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Sousa ÉML, Otero M, Rocha LS, Gil MV, Ferreira P, Esteves VI, Calisto V. Multivariable optimization of activated carbon production from microwave pyrolysis of brewery wastes - Application in the removal of antibiotics from water. JOURNAL OF HAZARDOUS MATERIALS 2022; 431:128556. [PMID: 35255334 DOI: 10.1016/j.jhazmat.2022.128556] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/17/2022] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
This study aimed at optimizing the one-step chemical activation and microwave pyrolysis of an agro-industrial waste to obtain a microporous activated carbon (AC) with superior textural and adsorptive properties by a fast, low-reagent and low-energy process. Spent brewery grains were used as precursor, and the antibiotics sulfamethoxazole (SMX), trimethoprim (TMP) and ciprofloxacin (CIP) were considered as target adsorbates. A fractional factorial design was applied to evaluate the effect of the main factors affecting the preparation of AC (activating agent, activating agent:precursor ratio, pyrolysis temperature and residence time) on relevant responses. Under optimized conditions (K2CO3 activation, pyrolysis at 800 °C during 20 min and a K2CO3:precursor ratio of 1:2), a microporous AC with specific surface area of 1405 m2 g-1 and large adsorption of target antibiotics (82-94%) was obtained and selected for further studies. Equilibrium times up to 60 min and maximum Langmuir adsorption capacities of 859 µmol g-1 (SMX), 790 µmol g-1 (TMP) and 621 µmol g-1 (CIP) were obtained. The excellent textural and adsorptive properties of the selected material were achieved with a very fast pyrolysis and low load of activating agent, highlighting the importance of optimization studies to decrease the environmental and economic impact of waste-based AC.
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Affiliation(s)
- Érika M L Sousa
- Department of Chemistry and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Marta Otero
- Department of Environment and Planning and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal; Department of Applied Chemistry and Physics, Universidad de León, Campus de Vegazana, 24071 León, Spain
| | - Luciana S Rocha
- Department of Chemistry and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - María V Gil
- Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC, Francisco Pintado Fe 26, 33011 Oviedo, Spain
| | - Paula Ferreira
- Department of Materials and Ceramic Engineering and CICECO, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Valdemar I Esteves
- Department of Chemistry and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Vânia Calisto
- Department of Chemistry and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal.
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5
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Pereira D, Rocha LS, Gil MV, Otero M, Silva NJO, Esteves VI, Calisto V. In situ functionalization of a cellulosic-based activated carbon with magnetic iron oxides for the removal of carbamazepine from wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:18314-18327. [PMID: 32474779 DOI: 10.1007/s11356-020-09314-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 05/14/2020] [Indexed: 06/11/2023]
Abstract
The main goal of this work was to produce an easily recoverable waste-based magnetic activated carbon (MAC) for an efficient removal of the antiepileptic pharmaceutical carbamazepine (CBZ) from wastewater. For this purpose, the synthesis procedure was optimized and a material (MAC4) providing immediate recuperation from solution, remarkable adsorptive performance and relevant properties (specific surface area of 551 m2 g-1 and saturation magnetization of 39.84 emu g-1) was selected for further CBZ kinetic and equilibrium adsorption studies. MAC4 presented fast CBZ adsorption rates and short equilibrium times (< 30-45 min) in both ultrapure water and wastewater. Equilibrium studies showed that MAC4 attained maximum adsorption capacities (qm) of 68 ± 4 mg g-1 in ultrapure water and 60 ± 3 mg g-1 in wastewater, suggesting no significant interference of the aqueous matrix in the adsorption process. Overall, this work provides evidence of potential application of a waste-based MAC in the tertiary treatment of wastewaters. Graphical abstract.
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Affiliation(s)
- Diogo Pereira
- Department of Chemistry & CESAM, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Luciana S Rocha
- Department of Chemistry & CESAM, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - María V Gil
- Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC, Francisco Pintado Fe 26, 33011, Oviedo, Spain
| | - Marta Otero
- Department of Environment and Planning & CESAM, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Nuno J O Silva
- Department of Physics & CICECO, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Valdemar I Esteves
- Department of Chemistry & CESAM, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Vânia Calisto
- Department of Chemistry & CESAM, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal.
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6
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Producing Magnetic Nanocomposites from Paper Sludge for the Adsorptive Removal of Pharmaceuticals from Water-A Fractional Factorial Design. NANOMATERIALS 2021; 11:nano11020287. [PMID: 33499098 PMCID: PMC7911794 DOI: 10.3390/nano11020287] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/15/2021] [Accepted: 01/20/2021] [Indexed: 12/27/2022]
Abstract
In view of a simple after-use separation, the potentiality of producing magnetic activated carbon (MAC) by intercalation of ferromagnetic metal oxide nanoparticles in the framework of a powder activated carbon (PAC) produced from primary paper sludge was explored in this work. The synthesis conditions to produce cost effective and efficient MACs for the adsorptive removal of pharmaceuticals (amoxicillin, carbamazepine, and diclofenac) from aqueous media were evaluated. For this purpose, a fractional factorial design (FFD) was applied to assess the effect of the most significant variables (Fe3+ to Fe2+ salts ratio, PAC to iron salts ratio, temperature, and pH), on the following responses concerning the resulting MACs: Specific surface area (SBET), saturation magnetization (Ms), and adsorption percentage of amoxicillin, carbamazepine, and diclofenac. The statistical analysis revealed that the PAC to iron salts mass ratio was the main factor affecting the considered responses. A quadratic linear regression model A = f(SBET, Ms) was adjusted to the FFD data, allowing to differentiate four of the eighteen MACs produced. These MACs were distinguished by being easily recovered from aqueous phase using a permanent magnet (Ms of 22-27 emu g-1), and their high SBET (741-795 m2 g-1) were responsible for individual adsorption percentages ranging between 61% and 84% using small MAC doses (35 mg L-1).
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7
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Sousa É, Rocha L, Jaria G, Gil MV, Otero M, Esteves VI, Calisto V. Optimizing microwave-assisted production of waste-based activated carbons for the removal of antibiotics from water. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 752:141662. [PMID: 32889260 DOI: 10.1016/j.scitotenv.2020.141662] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/20/2020] [Accepted: 08/10/2020] [Indexed: 06/11/2023]
Abstract
This work aimed at the microwave-assisted production of activated carbon (AC) from primary paper mill sludge (PS) for the adsorption of antibiotics from water. Production conditions, namely pyrolysis temperature, pyrolysis time and activating agent (KOH):PS ratio, were optimized as a function of product yield, specific surface area (SBET), total organic carbon (TOC) content and adsorptive removal percentage of two target antibiotics (amoxicillin (AMX) and sulfamethoxazole (SMX)). Under the optimized conditions (pyrolysis at 800 °C during 20 min and a KOH:PS ratio of 1:5), a microporous AC (MW800-20-1:5, with SBET = 1196 m2 g-1, TOC = 56.2% and removal of AMX and SMX = 85% and 72%, respectively) was produced and selected for further kinetic and equilibrium adsorption studies. The obtained results were properly described by the Elovich reaction-based kinetic model and the Langmuir equilibrium isotherm, with maximum adsorption capacities of 204 ± 5 mg g-1 and 217 ± 8 mg g-1 for AMX and SMX, respectively. Considering the satisfactory comparison of these results with the performance of commercial and alternative AC produced by conventional pyrolysis, this work demonstrated the feasibility of the microwave-assisted production of environmentally and energetically sustainable waste-based AC to be applied in the efficient removal of antibiotics from water.
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Affiliation(s)
- Érika Sousa
- Department of Chemistry and CESAM (Centre for Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Luciana Rocha
- Department of Chemistry and CESAM (Centre for Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Guilaine Jaria
- Department of Chemistry and CESAM (Centre for Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Maria V Gil
- Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC, Francisco Pintado Fe 26, 33011 Oviedo, Spain
| | - Marta Otero
- Department of Environment and Planning and CESAM (Centre for Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Valdemar I Esteves
- Department of Chemistry and CESAM (Centre for Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Vânia Calisto
- Department of Chemistry and CESAM (Centre for Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
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Liu H, Luo J, Shukla P. Effluents detoxification from pulp and paper industry using microbial engineering and advanced oxidation techniques. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122998. [PMID: 32502804 DOI: 10.1016/j.jhazmat.2020.122998] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/11/2020] [Accepted: 05/18/2020] [Indexed: 06/11/2023]
Abstract
Due to the high demand of paper and related items, pulp and paper industry is flourishing day by day. With increased production, come the hazards associated with the toxic elements present in the effluents. Various microorganisms are currently employed in the remediation of these toxic effluents. In addition, various techniques like ozonation, electrocoagulation, UV treatment, Fenton's reagent, and photo-Fenton based techniques are used in advanced oxidation processes to reduce these toxins from effluents. This review highlights various above mentioned advanced techniques and innovative processes along with the biological remediation of these toxic effluents with the help of some potential microbial consortia or their combinatory effects. Moreover, the present review will also disclose the ideas on utilizing the tools of metabolic engineering, systems biology, and artificial intelligence towards microbial engineering for relatively better bioremediation processes. In the future, these techniques might be helpful in increasing the capability of microbial consortia towards detoxification of effluents to make them environmentally safe. Finally, this review gives well-synchronized approaches to get more insights into these innovative methodologies and techniques and their use for various industrial applications.
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Affiliation(s)
- Hao Liu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Jianfei Luo
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, PR China
| | - Pratyoosh Shukla
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India.
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Kumar Gupta G, Shukla P. Insights into the resources generation from pulp and paper industry wastes: Challenges, perspectives and innovations. BIORESOURCE TECHNOLOGY 2020; 297:122496. [PMID: 31831257 DOI: 10.1016/j.biortech.2019.122496] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 11/24/2019] [Accepted: 11/25/2019] [Indexed: 06/10/2023]
Abstract
Pulp and paper industry is swiftly budding to fulfill industrial needs and with the growth of this industry, a large amount of waste has also generated which includes biological sludge generated from the wood digestion process, fly ash accumulation and lime mud produced in chemical reagent recovery circuit. There are many health hazards associated with generated wastes and this waste material can be utilized in sustainable ways to generate useful resources through technological innovations. This review highlights a few useful aspects of waste conversion to resources like the production of green energy, sorbent development, and clinker preparation. The generation of resources from such wastes is a revolutionary and innovative concept for sustainable development including valorization of the generated waste to integrate pulp and paper industry with biorefinery. This review paper focuses on the sustainable utilization of waste from such industry along with its efficiency and future challenges.
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Affiliation(s)
- Guddu Kumar Gupta
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Pratyoosh Shukla
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India.
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10
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Silva CP, Jaria G, Otero M, Esteves VI, Calisto V. Adsorption of pharmaceuticals from biologically treated municipal wastewater using paper mill sludge-based activated carbon. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:13173-13184. [PMID: 30903474 DOI: 10.1007/s11356-019-04823-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/07/2019] [Indexed: 06/09/2023]
Abstract
A waste-based alternative activated carbon (AAC) was produced from paper mill sludge under optimized conditions. Aiming its application in tertiary wastewater treatment, AAC was used for the removal of carbamazepine, sulfamethoxazole, and paroxetine from biologically treated municipal wastewater. Kinetic and equilibrium adsorption experiments were run under batch operation conditions. For comparison purposes, they were also performed in ultrapure water and using a high-performance commercial AC (CAC). Adsorption kinetics was fast for the three pharmaceuticals and similar onto AAC and CAC in either wastewater or ultrapure water. However, matrix effects were observed in the equilibrium results, being more remarkable for AAC. These effects were evidenced by Langmuir maximum adsorption capacities (qm, mg g-1): for AAC, the lowest and highest qm were 194 ± 10 (SMX) and 287 ± 9 (PAR), in ultrapure water, and 47 ± 1 (SMX) and 407 ± 14 (PAR), in wastewater, while for CAC, the lowest and highest qm were 118 ± 7 (SMX) and 190 ± 16 (PAR) in ultrapure water and 123 ± 5 (SMX) and 160 ± 7 (CBZ) in wastewater. It was found that the matrix pH played a key role in these differences by controlling the surface electrostatic interactions between pharmaceutical and AC. Overall, it was evidenced the need of adsorption results in real matrices and demonstrated that AAC is a promising option to be implemented in tertiary wastewater treatments for pharmaceuticals' removal. Graphical abstract Production of an alternative activated carbon (AC) comparing favourably with a commercial AC in the removal of neutral and positive pharmaceuticals from wastewater.
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Affiliation(s)
- Carla Patrícia Silva
- Department of Chemistry and CESAM (Centre for Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal.
| | - Guilaine Jaria
- Department of Chemistry and CESAM (Centre for Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Marta Otero
- Department of Environment and Planning and CESAM (Centre for Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Valdemar I Esteves
- Department of Chemistry and CESAM (Centre for Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Vânia Calisto
- Department of Chemistry and CESAM (Centre for Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
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11
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Li K, Chen W, Yang H, Chen Y, Xia S, Xia M, Tu X, Chen H. Mechanism of biomass activation and ammonia modification for nitrogen-doped porous carbon materials. BIORESOURCE TECHNOLOGY 2019; 280:260-268. [PMID: 30776652 DOI: 10.1016/j.biortech.2019.02.039] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 02/05/2019] [Accepted: 02/06/2019] [Indexed: 06/09/2023]
Abstract
The effect of chemical activation and NH3 modification on activated carbons (ACs) was explored via two contrasting bamboo pyrolysis strategies involving either two steps (activation followed by nitrogen doping in NH3 atmosphere) or one step (activation in NH3 atmosphere) with several chemical activating reagents (KOH, K2CO3, and KOH + K2CO3). The ACs produced by the two-step method showed relatively smaller specific surface areas (∼90% micropores) and lower nitrogen contents. From the one-step method, the ACs had larger pore diameters with about 90% small mesopores (2-3.5 nm). Due to a promotion effect with the KOH + K2CO3 combination, the AC attained the greatest surface area (2417 m2 g-1) and highest nitrogen content (3.89 wt%), endowing the highest capacitance (175 F g-1). The balance between surface area and nitrogen content recommends KOH + K2CO3 activation via the one-step method as the best choice for achieving both greener production process and better pore structure.
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Affiliation(s)
- Kaixu Li
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074 Wuhan, China.
| | - Wei Chen
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074 Wuhan, China
| | - Haiping Yang
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074 Wuhan, China.
| | - Yingquan Chen
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074 Wuhan, China.
| | - Sunwen Xia
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074 Wuhan, China.
| | - Mingwei Xia
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074 Wuhan, China.
| | - Xin Tu
- Department of Electrical Engineering and Electronics, University of Liverpool, L69 3GJ Liverpool, UK.
| | - Hanping Chen
- State Key Laboratory of Coal Combustion, School of Power and Energy Engineering, Huazhong University of Science and Technology, 430074 Wuhan, China.
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12
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Pereira JM, Calisto V, Santos SM. Computational optimization of bioadsorbents for the removal of pharmaceuticals from water. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.01.167] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zhao T, Yasuda K, Tashiro Y, Darmayanti RF, Sakai K, Sonomoto K. Semi-hydrolysate of paper pulp without pretreatment enables a consolidated fermentation system with in situ product recovery for the production of butanol. BIORESOURCE TECHNOLOGY 2019; 278:57-65. [PMID: 30677699 DOI: 10.1016/j.biortech.2019.01.043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 01/08/2019] [Accepted: 01/09/2019] [Indexed: 05/12/2023]
Abstract
Utilization of lignocellulosic biomasses for biobutanol fermentation usually requires costly processes of pretreatment and enzymatic hydrolysis. In this study, paper pulp (93.2% glucan) was used as a starting biomass material to produce biobutanol. We conducted enzymatic semi-hydrolysis of paper pulp without pretreatment and with low enzyme loading, which produced high concentrations of cellobiose (13.9 g L-1) and glucose (21.3 g L-1). In addition, efficient fermentation of the semi-hydrolysate was achieved similar to that with the use of commercial sugars without inhibitors. Finally, we designed a novel non-isothermal simultaneous saccharification and fermentation with in situ butanol recovery, which was composed of a repeated semi-hydrolysis process and successive butanol-extractive fermentation process under the respective optimal conditions. The consolidated system improved butanol production, butanol yields, and butanol productivities and enabled repeated use of medium when compared with other integrated hydrolysis and fermentation processes.
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Affiliation(s)
- Tao Zhao
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kento Yasuda
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yukihiro Tashiro
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan; Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Rizki Fitria Darmayanti
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan; Department of Chemical Engineering, Faculty of Engineering, University of Jember, Jalan Kalimantan, Kampus Tegal Boto, 68121 Jember, Indonesia
| | - Kenji Sakai
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan; Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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A Review on the Synthesis and Characterization of Biomass-Derived Carbons for Adsorption of Emerging Contaminants from Water. C — JOURNAL OF CARBON RESEARCH 2018. [DOI: 10.3390/c4040063] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This review analyzes the preparation and characterization of biomass-derived carbons and their application as adsorbents of emerging contaminants from water. The study begins by identifying the different types of emerging contaminants more often found in water streams, including a brief reference to the available technologies for their removal. It also describes the biomass sources that could be used for the synthesis of biochars and activated carbons (AC). The characterization of the adsorbents and the different approaches that can be followed to learn about the adsorption processes are also detailed. Finally, the work reviews literature studies focused on the adsorption of emerging contaminants on biochars and activated carbons synthesized from biomass precursors.
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