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Rabiee Abyaneh M, Nabi Bidhendi G, Daryabeigi Zand A. Pb(ΙΙ), Cd(ΙΙ), and Mn(ΙΙ) adsorption onto pruning-derived biochar: physicochemical characterization, modeling and application in real landfill leachate. Sci Rep 2024; 14:3426. [PMID: 38341513 DOI: 10.1038/s41598-024-54028-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 02/07/2024] [Indexed: 02/12/2024] Open
Abstract
The aim of this study was to systemically evaluate how different pyrolysis temperatures (400, 550, and 700 °C) and particle sizes (1-2 mm and 63-75 µm) were influenced biochar evolution, made from urban pruning waste, during pyrolysis process and to establish their relationships with biochar potential for removal of lead (Pb), cadmium (Cd), and manganese (Mn) from real municipal solid waste landfill leachate. The effects of pH (2-7), contact time (30-300 min) and adsorbent dosage (0.1-5 g L-1) on heavy metals removal were also examined. The results showed that physicochemical properties of biochar were greatly influenced by pyrolysis temperature. Particle size, however, showed little influence on biochar characteristics (p > 0.05). The yield, volatile matter, hydrogen and oxygen contents, and surface functional groups decreased consistently with increasing pyrolysis temperature. An increase in the pH, electrical conductivity, ash, fixed carbon, and specific surface area values was also found. In biochar samples formed at high temperatures (i.e., 550 and 700 °C), Fourier transform infrared spectroscopy-FTIR studies confirmed the increase in aromaticity. Field emission scanning electron microscopy-FESEM images showed differences in the microporous structure and lower size pores at higher temperatures. Biochar pyrolyzed at 700 °C with a particle size of 63-75 µm (i.e., Lv700-63) showed the highest removal efficiency performance. Pb and Cd ions were completely removed (100%) by 0.2 g L-1 Lv700-63 at 7.0 pH and contact times of 120 and 90 min, respectively. The maximum percentage removal of Mn was 86.20% at optimum conditions of 0.2 g L-1 Lv700-63 dosage, 7.0 pH, and 180 min contact time. The findings suggests that the surface complexation, π-electron coordination, and cation exchange were the dominant mechanisms for the Pb, Cd, and Mn removal onto Lv700-63.
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Affiliation(s)
- Maryam Rabiee Abyaneh
- Department of Environmental Engineering, University of Tehran, Kish International Campus, Kish, Iran.
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Pazzaglia A, Gelosia M, Giannoni T, Fabbrizi G, Nicolini A, Castellani B. Wood waste valorization: Ethanol based organosolv as a promising recycling process. Waste Manag 2023; 170:75-81. [PMID: 37552928 DOI: 10.1016/j.wasman.2023.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 07/18/2023] [Accepted: 08/02/2023] [Indexed: 08/10/2023]
Abstract
Wood waste is a valuable material that could constitute an abundant and inexpensive source for the production of new materials the recovery of energy. In Europe, about 46% of wood waste is recycled to particleboard and fiberboard, while the other fraction is incinerated. However, a considerable quantity of wood waste shows potential for its transformation into value-added products due to its compositional quality. In this work, wood waste collected at a mechanical treatment plant underwent organosolv treatment to produce a cellulose pulp suitable for manufacturing containerboard. Three variables (temperature, acid concentration, and ethanol concentration) were investigated to find an optimal solution to produce wood pulp by means of Design of Experiment. Wood waste was microwave-heated at 160 °C for 15 min using an acidified ethanol-water solution (2% w/w H2SO4 and 0.8 w/w ethanol concentration), producing pulp with an average cellulose content of 76% where 93% of initial cellulose was retained. Thanks to a one-pot approach, ethanol was totally recovered, 62% of initial lignin was precipitated, and 20 g/l of hemicellulose-derived sugars solution was obtained. Finally, three wood waste samples collected in different periods of the year yielded comparable outcomes, suggesting a good reproducibility of the organosolv process. ANOVA test with a significance level of 0.01 showed a p-value of 0.029 and 0.235 for cellulose content and cellulose recovery, respectively. This study paves the way for an industrial symbiosis between recycling centers and paper mills located in the same territory.
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Affiliation(s)
- Aron Pazzaglia
- CIRIAF, Interuniversity Research Centre on Pollution and Environment "M.Felli", University of Perugia, Via G.Duranti 67, 06125 Perugia, Italy
| | - Mattia Gelosia
- CIRIAF, Interuniversity Research Centre on Pollution and Environment "M.Felli", University of Perugia, Via G.Duranti 67, 06125 Perugia, Italy
| | - Tommaso Giannoni
- CIRIAF, Interuniversity Research Centre on Pollution and Environment "M.Felli", University of Perugia, Via G.Duranti 67, 06125 Perugia, Italy
| | - Giacomo Fabbrizi
- CIRIAF, Interuniversity Research Centre on Pollution and Environment "M.Felli", University of Perugia, Via G.Duranti 67, 06125 Perugia, Italy
| | - Andrea Nicolini
- CIRIAF, Interuniversity Research Centre on Pollution and Environment "M.Felli", University of Perugia, Via G.Duranti 67, 06125 Perugia, Italy; Department of Engineering, University of Perugia, Via G.Duranti 93, 06125 Perugia, Italy
| | - Beatrice Castellani
- CIRIAF, Interuniversity Research Centre on Pollution and Environment "M.Felli", University of Perugia, Via G.Duranti 67, 06125 Perugia, Italy; Department of Engineering, University of Perugia, Via G.Duranti 93, 06125 Perugia, Italy.
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Samir Ali S, Jiao H, El-Sapagh S, Sun J. Biodegradation of willow sawdust by novel cellulase-producing bacterial consortium from wood-feeding termites for enhancing methane production. Bioresour Technol 2023:129232. [PMID: 37244303 DOI: 10.1016/j.biortech.2023.129232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/18/2023] [Accepted: 05/21/2023] [Indexed: 05/29/2023]
Abstract
This study was designed to develop a cellulase-producing bacterial consortium (CBC) from wood-feeding termites that could effectively degrade willow sawdust (WSD) and consequently enhance methane production. The bacterial strains Shewanella sp. SSA-1557, Bacillus cereus SSA-1558, and Pseudomonas mosselii SSA-1568 exhibited significant cellulolytic activity. Their CBC consortium showed positive effects on cellulose bioconversion, resulting in accelerated WSD degradation. After nine days of pretreatment, the WSD had lost 63%, 50%, and 28% of its cellulose, hemicellulose, and lignin, respectively. The hydrolysis rate of treated WSD (352 mg/g) was much higher than that of untreated WSD (15.2 mg/g). The highest biogas production (66.1 NL/kg VS) with 66% methane was observed in the anaerobic digester M-2, which contained a combination of pretreated WSD and cattle dung in a 50/50 ratio. The findings will enrich knowledge for the development of cellulolytic bacterial consortia from termite guts for biological wood pretreatment in lignocellulosic anaerobic digestion biorefineries.
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Affiliation(s)
- Sameh Samir Ali
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Haixin Jiao
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Shimaa El-Sapagh
- Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China.
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Dos Reis GS, Schnorr CE, Dotto GL, Vieillard J, Netto MS, Silva LFO, De Brum IAS, Thyrel M, Lima ÉC, Lassi U. Wood waste-based functionalized natural hydrochar for the effective removal of Ce(III) ions from aqueous solution. Environ Sci Pollut Res Int 2023; 30:64067-64077. [PMID: 37060415 DOI: 10.1007/s11356-023-26921-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 04/05/2023] [Indexed: 04/16/2023]
Abstract
In this study, a sustainable and easily prepared hydrochar from wood waste was studied to adsorb and recover the rare earth element cerium (Ce(III)) from an aqueous solution. The results revealed that the hydrochar contains several surface functional groups (e.g., C-O, C = O, OH, COOH), which largely influenced its adsorption capacity. The effect of pH strongly influenced the Ce(III) removal, achieving its maximum removal efficiency at pH 6.0 and very low adsorption capacity under an acidic solution. The hydrochar proved to be highly efficient in Ce(III) adsorption reaching a maximum adsorption capacity of 327.9 mg g-1 at 298 K. The kinetic and equilibrium process were better fitted by the general order and Liu isotherm model, respectively. Possible mechanisms of Ce(III) adsorption on the hydrochar structure could be explained by electrostatic interactions and chelation between surface functional groups and the Ce(III). Furthermore, the hydrochar exhibited an excellent regeneration capacity upon using 1 mol L-1 of sulfuric acid (H2SO4) as eluent, and it was reused for three cycles without losing its adsorption performance. This research proposes a sustainable approach for developing an efficient adsorbent with excellent physicochemical and adsorption properties for Ce(III) removal.
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Affiliation(s)
- Glaydson S Dos Reis
- Department of Forest Biomaterials and Technology, Biomass Technology Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
| | - Carlos E Schnorr
- Universidad De La Costa, Calle 58 # 55-66, 080002, Barranquilla, Atlántico, Colombia
| | - Guilherme L Dotto
- Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil.
- Normandie Université, UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014), 27000, Evreux, France.
| | - Julien Vieillard
- Normandie Université, UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014), 27000, Evreux, France
| | - Matias S Netto
- Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil
| | - Luis F O Silva
- Universidad De La Costa, Calle 58 # 55-66, 080002, Barranquilla, Atlántico, Colombia
| | - Irineu A S De Brum
- Institute of Chemistry, Federal University of Rio Grande Do Sul, P.O.15003, Porto Alegre, 91501-970, Brazil
| | - Mikael Thyrel
- Department of Forest Biomaterials and Technology, Biomass Technology Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
| | - Éder C Lima
- Institute of Chemistry, Federal University of Rio Grande Do Sul, P.O.15003, Porto Alegre, 91501-970, Brazil
| | - Ulla Lassi
- Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland
- Unit of Applied Chemistry, University of Jyvaskyla, Kokkola University Consortium Chydenius, Talonpojankatu 2B, 67100, Kokkola, Finland
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Khodaei H, Olson C, Patino D, Rico J, Jin Q, Boateng A. Multi-objective utilization of wood waste recycled from construction and demolition (C&D): Products and characterization. Waste Manag 2022; 149:228-238. [PMID: 35752110 DOI: 10.1016/j.wasman.2022.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 05/18/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Producing energy and higher value bio-products from waste materials has been proposed as an economically viable opportunity in the renewable energy sector. However, several challenges associated with the integrated biomass conversion processes remain to be resolved. The present study introduces a multi-faceted plant production of thermal energy and biochar from construction and demolition (C&D) wood chips. The overarching objective of the study is to reduce waste materials while simultaneously producing a self-independent clean thermal energy resource along with value-added co-products such as biochar, biogases and/or activated carbon. The combined thermal energy and slow pyrolysis unit relies on 95% of its energy from waste wood chips to produce thermal energy and high value carbon products. The system not only supplies the energy required for the indirect pyrolysis unit but also provides a major portion of thermal energy demanded for the site. A multi-purpose objective of wood waste management, energy production from waste material, high-quality biochar from waste wood (over 80% carbon), and carbon offsets is demonstrated through the utilization of this plant by addressing some of the major previously problems and challenges faced. The information is useful for techno-economic and life cycle analysis in the next study.
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Affiliation(s)
- H Khodaei
- Innovative Reduction Strategies Inc., 6415 75 Street, NW, Edmonton, AB T6E 0T3, Canada; University of Alberta, Department of Renewable Resources, 116 St. and 85 Ave., Edmonton, Alberta T6G 2R3, Canada.
| | - C Olson
- Innovative Reduction Strategies Inc., 6415 75 Street, NW, Edmonton, AB T6E 0T3, Canada
| | - D Patino
- Industrial Engineering School, University of Vigo, Lagoas-Marcosende s/n, 36310 Vigo, Spain
| | - J Rico
- Industrial Engineering School, University of Vigo, Lagoas-Marcosende s/n, 36310 Vigo, Spain
| | - Q Jin
- Innovative Reduction Strategies Inc., 6415 75 Street, NW, Edmonton, AB T6E 0T3, Canada
| | - A Boateng
- Alpha Thermal Process, LLC 505, Mennonite Road Royersford, PA 19468, USA
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Chen C, Liu J, Gen C, Liu Q, Zhu X, Qi W, Wang F. Synthesis of zero-valent iron/biochar by carbothermal reduction from wood waste and iron mud for removing rhodamine B. Environ Sci Pollut Res Int 2021; 28:48556-48568. [PMID: 33909249 DOI: 10.1007/s11356-021-13962-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
This study proposes a new process to synthesize zero-valent iron/biochar (Fe0-BC) by carbothermal reduction using wood waste and iron mud as raw materials under different temperature. The characterization results showed that the Fe0-BC synthesized at 1200 °C (Fe0-BC-1200) possessed favorable adsorption capacity with the specific surface area of 103.18 m2/g and that the zero-valent iron (Fe0) particles were uniformly dispersed on the biochar surface. The removal efficiency of rhodamine B (RB) was determined to evaluate the performance of the prepared Fe0-BC. Fe0-BC-1200 presented the best performance on RB removal, which mainly ascribes to that more Fe0 particles generated at higher temperature. The equilibrium adsorption capacity reached 49.93 mg/g when the initial RB concentration and the Fe0-BC-1200 dosage were 100 mg/L and 2 g/L, respectively, and the pseudo-second-order model was suitable to fit the removal experimental data. LCMC and XRD analyses revealed that the removal mechanism included the physical adsorption of biochar and the redox reaction of Fe0. Moreover, copper existing in the iron mud was also reduced to Cu0, which was beneficial to catalyze the oxidation of iron; the degradation of RB was promoted at the same time.
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Affiliation(s)
- Chao Chen
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Jianguo Liu
- School of Environment, Tsinghua University, Beijing, 100084, China.
| | - Chao Gen
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Qin Liu
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Xuetao Zhu
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Wenzhi Qi
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Fan Wang
- School of Environment, Tsinghua University, Beijing, 100084, China
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7
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Li D, Ma X, Yin F, Qiu Y, Yan X. Creating biotransformation of volatile fatty acids and octanoate as co-substrate to high yield medium-chain-length polyhydroxyalkanoate. Bioresour Technol 2021; 331:125031. [PMID: 33798859 DOI: 10.1016/j.biortech.2021.125031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 03/16/2021] [Accepted: 03/17/2021] [Indexed: 06/12/2023]
Abstract
Using mixed microbial consortium (MMC) to accumulate polyhydroxyalkanoate (PHA) is an effective strategy to solve high production cost and reduce the amount of excess sludge. In this study, a process for the production of short-chain-length and medium-chain-length PHA using volatile fatty acids (VFAs) from pretreated wood hydrolysate synergistic with octanoate as co-substrate was proposed. The effects of co-substrate ratios on PHA accumulation ability and physical properties were investigated. The incorporation of co-substrate accelerated the time of PHA and 3-hydroxyoctanoate reaching the maximum production (1834 and 280 mg COD/L). The highest PHA content was 53.0% (w/w), which was equivalent to that reported previously. The biopolymer films possessed high tensile strength, Young's modulus, and could be used in the field of water vapor barrier requirements. The accumulation strategy applied for converting fermentation products VFAs and octanoate co-substrate into high value and yield PHA could potentially demonstrate the valuable for low-cost large-scale production.
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Affiliation(s)
- Dongna Li
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300222, PR China
| | - Xiaojun Ma
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300222, PR China.
| | - Fen Yin
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300222, PR China
| | - Yujuan Qiu
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300222, PR China
| | - Xu Yan
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300222, PR China
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Bispo LFP, Nolasco AM, Souza ECD, Klingenberg D, Dias Júnior AF. Valorizing urban forestry waste through the manufacture of toys. Waste Manag 2021; 126:351-359. [PMID: 33813312 DOI: 10.1016/j.wasman.2021.03.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 03/08/2021] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Urban forestry generates a huge amount of waste worldwide, resulting from the processes of pruning and suppression. Disposal in landfills reduces the useful life of these facilities and forgoes the possibility of generating income from the waste. This study investigated the manufacture of toys as a strategy to valorize urban forestry waste. For this, physical-mechanical, chemical (extractive), color and shape characterizations were performed for three species of urban trees commonly planted in Brazil, a region of Neotropical forests. Toy prototypes were developed and manufactured from wood waste. Regarding color, all studied species showed high value of the variable b*, which refers to the blue-yellow axis. Handroanthus heptaphyllus wood had the highest values of basic density (0.706 g.cm-3) and Janka hardness (1142, 1027 and 1669 kgf.cm-2 for radial, tangential and transverse directions, respectively), and had the lowest volumetric shrinkage (11.38%). The lowest content of total extractives was measured in Handroanthus heptaphyllus, 6.33%, and the greatest content was found in Spathodea campanulata, 7.01%. The average value suggested for the toy prototypes varied between $ 3.70 and $ 13.58. The urban pruning wastes of the species studied have physical, chemical and mechanical attributes suitable for the manufacture of toys. This use has strong potential for environmental, economic and social sustainability and the toys are pedagogically accepted by adults and children.
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Affiliation(s)
- Luiz Fernando Pereira Bispo
- Department of Forest Sciences, University of São Paulo (ESALQ/USP). Av. Pádua Dias, 11, Piracicaba, SP 13418-900, Brazil
| | - Adriana Maria Nolasco
- Department of Forest Sciences, University of São Paulo (ESALQ/USP). Av. Pádua Dias, 11, Piracicaba, SP 13418-900, Brazil
| | - Elias Costa de Souza
- Department of Forest Sciences, University of São Paulo (ESALQ/USP). Av. Pádua Dias, 11, Piracicaba, SP 13418-900, Brazil.
| | - Debora Klingenberg
- Department of Forest Sciences, University of São Paulo (ESALQ/USP). Av. Pádua Dias, 11, Piracicaba, SP 13418-900, Brazil
| | - Ananias Francisco Dias Júnior
- Department of Forestry and Wood Sciences, Federal University of Espírito Santo (UFES). Av. Governador Lindemberg, 316, Jerônimo Monteiro, ES 29550-000, Brazil
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Faremi OE, Sogbanmu TO, Adeyemo OK. How sawmill wastes impact surface water, sediment, macrobenthic invertebrates, and fish: a case study of the Lagos lagoon, Okobaba Area, South-western Nigeria. Environ Monit Assess 2021; 193:235. [PMID: 33779861 DOI: 10.1007/s10661-021-09006-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 03/11/2021] [Indexed: 06/12/2023]
Abstract
The Okobaba area of the Lagos Lagoon, Nigeria, is characterised by sawmilling activities which are potential threats to resident aquatic organisms. This study was aimed at evaluating the effect of sawmilling activities on the environmental quality of the Lagos lagoon at Okobaba area, Lagos, Nigeria. Surface water, sediment, macrobenthic invertebrates, and fish species were sampled monthly from six stations for 3 months (July-September 2018). Relevant stakeholders were administered a cross-sectional questionnaire to determine their knowledge of the environmental effects of their activities. Environmental samples were analysed following standard methods. Descriptive and inferential statistics were performed using SPSS 20.0 and PAST 1.97. Results showed that surface water dissolved oxygen and chemical oxygen demand were significantly lower, while sediment total organic matter and nitrates were significantly higher at the test site compared to the reference site. A total of 389 macrobenthic invertebrates comprising eight species and two macrobenthic invertebrates comprising one species as well as 121 fishes comprising nine species and 70 fishes comprising nine (9) species were recorded at the reference and test sites respectively. About 46.3% of respondents alluded to improper waste disposal as the major cause of pollution at the test site among others, 66.7% responded that wastes were disposed of by burning among other disposal methods, and 66.6% agreed that the sawmilling activities contributed to reduction of aquatic animal population. We recommend urgent regulatory intervention to address the indiscriminate discharge of wastes and facilitate adequate environmental risk advocacy to sustain life below water (United Nations Sustainable Development Goal 14).
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Affiliation(s)
- Olamide Elizabeth Faremi
- Department of Science Laboratory Technology School of Science , Yaba College of Technology , Yaba, Lagos, Nigeria
| | - Temitope Olawunmi Sogbanmu
- Ecotoxicology and Conservation Unit, Department of Zoology, Faculty of Science, University of Lagos, Akoka, Lagos, Nigeria.
- Environmental Evidence Synthesis and Knowledge Translation (EESKT) Research Cluster, TETFund Centre of Excellence on Biodiversity Conservation and Ecosystem Management, University of Lagos, Akoka, Lagos, Nigeria.
| | - Olanike Kudirat Adeyemo
- Fish and Wildlife Unit, Department of Veterinary Public Health and Preventive Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
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Ali SS, Mustafa AM, Kornaros M, Sun J, Khalil M, El-Shetehy M. Biodegradation of creosote-treated wood by two novel constructed microbial consortia for the enhancement of methane production. Bioresour Technol 2021; 323:124544. [PMID: 33360721 DOI: 10.1016/j.biortech.2020.124544] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 05/07/2023]
Abstract
Lignocellulose biodegradation is limited because of its recalcitrant structure particularly when polluted by toxic and carcinogenic compounds such as creosote oil (CRO). As far as we know, this might be the first report that explores the biodegradation of creosote treated wood (CTW) to serve biomethane production. Two novel CTW-degrading microbial consortia, designated as CTW-1 and CTW-2, were screened and constructed to enhance methane production from CRO-treated pine sawdust. After 12 days of biological pretreatment by CTW-1 and CTW-2, a significant reduction in lignocellulosic content of CTW was recorded; estimated as 49 and 43%, respectively. More than 64 and 91% of cumulative biogas and methane yields were obtained from biodegraded CTW over control. Ecotoxicity of treated and untreated CTW was compared by Microtox test. The biodegraded CTW hydrolysates showed a toxicity decrease of more than 80%, suggesting the promising role of constructed microbial consortia for biofuel production and bioremediation.
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Affiliation(s)
- Sameh Samir Ali
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Ahmed M Mustafa
- State Key Laboratory of Pollution Control and Resourses Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 20092, China; Department of Agricultural Engineering, Faculty of Agriculture, Suez Canal University, Ismailia 41522, Egypt
| | - Michael Kornaros
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Department of Chemical Engineering, University of Patras, 1 Karatheodori Str., University Campus, 26504 Patras, Greece; INVALOR: Research Infrastructure for Waste Valorization and Sustainable Management, University Campus, 26504 Patras, Greece
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Maha Khalil
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt; Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Mohamed El-Shetehy
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt; Department of Biology, Faculty of Science and Medicine, University of Fribourg, CH-1700 Fribourg, Switzerland
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11
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Fan S, Sun Y, Ter Heijne A, Chen WS, Buisman CJN. Effect of nitrogen, phosphorus and pH on biological wood oxidation at 42 °C. Sci Total Environ 2020; 726:138569. [PMID: 32344251 DOI: 10.1016/j.scitotenv.2020.138569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/01/2020] [Accepted: 04/07/2020] [Indexed: 06/11/2023]
Abstract
Biological wood oxidation (BWO) is proposed as a cleaner alternative to wood combustion for heat production and wood waste management. Currently, BWO is not extensively studied and little is known about it. Nevertheless, given the composition of wood residues, which is dominated by carbon, nutrient availability may become a limiting factor during BWO. Our objective was to study the nutrition requirements for sustaining the BWO. For this purpose, three different factors including nitrogen addition, phosphorus addition and pH, were studied. Oxygen consumption and mass loss were monitored and used to evaluate the impact of nutrition on BWO and to calculate the theoretical heat production. The result showed that nitrogen addition at a relatively low level (2.5-10 mg/g) enhanced the cumulative oxygen consumption by 60-124% and mass loss by 28-95%, when compared with the BWO without nitrogen addition. The highest nitrogen addition examined in this research (20 mg/g), on the other hand, did not enhance BWO. Different phosphorus addition (0.5-5 mg/g) and pH (4-6) had little impacts on BWO. The highest theoretical heat production rate (0.63 W/kg dry wood biomass) was achieved using 2.5 mg/g nitrogen addition with a 95-day incubation. This suggests that nitrogen addition is required and able to sustain BWO. Besides, the cumulative oxygen consumption showed a good linear relationship with mass loss. This study provides the first indication on the effective quantify of nitrogen addition for enhancing BWO, which contributes to the selection of nutrient source for BWO in future studies.
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Affiliation(s)
- Shiyang Fan
- Environmental Technology, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Yue Sun
- Environmental Technology, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Annemiek Ter Heijne
- Environmental Technology, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Wei-Shan Chen
- Environmental Technology, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands.
| | - Cees J N Buisman
- Environmental Technology, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, Leeuwarden, the Netherlands
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12
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Li D, Yin F, Ma X. Towards biodegradable polyhydroxyalkanoate production from wood waste: Using volatile fatty acids as conversion medium. Bioresour Technol 2020; 299:122629. [PMID: 31881436 DOI: 10.1016/j.biortech.2019.122629] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/12/2019] [Accepted: 12/14/2019] [Indexed: 06/10/2023]
Abstract
Production of polyhydroxyalkanoate (PHA) via mixed microbial consortia is a potential economic alternative responding to the current demand for functional greener materials to replace traditional petroleum-basedpolymers. The goal of this study was to synthesize PHA using volatile fatty acids (VFAs) obtained from the co-fermentation of pretreated wood waste and sewage as carbon source. High PHA yield of 0.71 g COD PHA/g COD VFAs and PHA content of 50.3 g PHA/100 g VSS were obtained at VFAs ratio (even:odd) of 88:12 after seven cycles cultivation. Even acids were more suitable for accumulating PHA as the preferred carbon source than odd acids, resulting in 3-hydroxybutyrate being the main monomer. PHA production achieved to the highest value of about 2639 mg COD/L at 1400 mg COD/L VFAs concentration. The bacterial genera displayed a highly diverse of the microbial community for the synthesis of PHA.
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Affiliation(s)
- Dongna Li
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300222, PR China
| | - Fen Yin
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300222, PR China
| | - Xiaojun Ma
- College of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300222, PR China.
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13
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Valdés CF, Marrugo GP, Chejne F, Marin-Jaramillo A, Franco-Ocampo J, Norena-Marin L. Co-gasification and co-combustion of industrial solid waste mixtures and their implications on environmental emissions, as an alternative management. Waste Manag 2020; 101:54-65. [PMID: 31590031 DOI: 10.1016/j.wasman.2019.09.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 09/03/2019] [Accepted: 09/26/2019] [Indexed: 06/10/2023]
Abstract
The primary sludge produced by the wastewater treatment plant of a pulp and paper mill has high physicochemical heterogeneity, which limits the efficiency of thermochemical methodologies for the final disposal of this residue. As a solution, co-pelletization of the Primary Sludge (PS) with two other principal Industrial Solid Residues (ISRs) of the plant, Coal Boiler Ashes (CBA) and Wood Waste chips (WW), was proposed as a way to valorize the PS for energy use, while reducing dewatering costs. The energy potential was evaluated through a series of thermal co-processing tests of disaggregated and pelletized mixtures. Due to their differing fixed-carbon-to-volatile-material ratios, combining the ISRs resulted in a reduction of up to 45% of the mass of the ISR generated, improving the disposal conditions and achieving a minimum thermal power of 5.0 MJ/Nm3 through gasification. Finally, the environmental implications of the thermal co-processing of the wastes were assessed, finding very low impacts due to pollutant emissions, in accordance with the legal environmental regulations in force in Colombia.
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Affiliation(s)
- Carlos F Valdés
- Universidad Nacional de Colombia, Facultad de Minas, Escuela de Procesos y Energía, TAYEA Group, Carrera 80 No. 65-223, Medellín, Colombia
| | - Gloria P Marrugo
- Universidad Nacional de Colombia, Facultad de Minas, Escuela de Procesos y Energía, TAYEA Group, Carrera 80 No. 65-223, Medellín, Colombia
| | - Farid Chejne
- Universidad Nacional de Colombia, Facultad de Minas, Escuela de Procesos y Energía, TAYEA Group, Carrera 80 No. 65-223, Medellín, Colombia.
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14
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Kelm MAP, da Silva Júnior MJ, de Barros Holanda SH, de Araujo CMB, de Assis Filho RB, Freitas EJ, Dos Santos DR, da Motta Sobrinho MA. Removal of azo dye from water via adsorption on biochar produced by the gasification of wood wastes. Environ Sci Pollut Res Int 2019; 26:28558-28573. [PMID: 30607856 DOI: 10.1007/s11356-018-3833-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 11/22/2018] [Indexed: 05/22/2023]
Abstract
It was the aim of this work to evaluate the adsorptive performance of the biochar obtained from the gasification of wood residues onto a solution of Indosol Black NF1200 dye. The study was performed by means of factorial design 22, having as control variables: pH and adsorbent's granulometry. Batch tests were carried out at 200 rpm for 3 h (T = 28 °C). As output variable, the percentage removal of dye was determined. The best operating conditions were pH = 2 and 100 mesh granulometry. Also, adsorbent dosage studies were carried out, as well as equilibrium and adsorption kinetics. Both kinetics and equilibrium of adsorption tests were proceeded in basic and acid medium. For a basic pH value (pH = 12), it was concluded the equilibrium was reached in about 3 h of experiment, the experimental qmax value was near 12 mg g-1, and the equilibrium data fitted the Langmuir model. On the other hand, for tests with pH = 2, the equilibrium was reached after 5 min of experiment, the experimental qmax value was over 185 mg g-1, and the equilibrium data fitted both the Langmuir and Freundlich models. Thus, the biochar produced via gasification of wood wastes appears to be a promising adsorbent for the removal of azo dyes from textile wastewater, especially when working at lower pH values. Also, for a 10-kg/h consumption of wood residue, approximately 10 kW of energy is generated and 1 kg of biochar is produced, which represents another advantage from the environmentally friendly point of view. Graphical abstract.
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Affiliation(s)
- Miguel Antônio Pires Kelm
- Department of Chemical Engineering, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, Pernambuco, 50670-901, Brazil
- Department of Civil Engineering, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, Pernambuco, 50670-901, Brazil
| | - Mário José da Silva Júnior
- Department of Civil Engineering, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, Pernambuco, 50670-901, Brazil
| | - Sávio Henrique de Barros Holanda
- Department of Civil Engineering, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, Pernambuco, 50670-901, Brazil
| | - Caroline Maria Bezerra de Araujo
- Department of Chemical Engineering, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, Pernambuco, 50670-901, Brazil.
| | - Romero Barbosa de Assis Filho
- Department of Chemical Engineering, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, Pernambuco, 50670-901, Brazil
- Instituto Federal de Pernambuco, Av. Prof. Luís Freire, 500 - Cidade Universitária, Recife, Pernambuco, 50740-540, Brazil
| | - Emerson Jaguaribe Freitas
- Activated Carbon Laboratory, Universidade Federal da Paraíba, Lot. Cidade Universitária, s/n - Castelo Branco III, João Pessoa, Paraiba, 58033-455, Brazil
| | - Diogo Rafael Dos Santos
- Activated Carbon Laboratory, Universidade Federal da Paraíba, Lot. Cidade Universitária, s/n - Castelo Branco III, João Pessoa, Paraiba, 58033-455, Brazil
| | - Maurício Alves da Motta Sobrinho
- Department of Chemical Engineering, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, Pernambuco, 50670-901, Brazil
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15
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Gupta S, Kua HW. Carbonaceous micro-filler for cement: Effect of particle size and dosage of biochar on fresh and hardened properties of cement mortar. Sci Total Environ 2019; 662:952-962. [PMID: 30795482 DOI: 10.1016/j.scitotenv.2019.01.269] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 01/07/2019] [Accepted: 01/17/2019] [Indexed: 05/22/2023]
Abstract
This study explores influence of biochar particle size and surface morphology on rheology, strength development and permeability of cement mortar, under moist and dry curing condition. Experimental results show that the flowability and viscosity of cement paste is more affected by macro-porous coarser (or 'normal') biochar particles of size 2-100 μm (NBC) compared to fine (or 'ground' biochar), which is in the size range of 0.10-2 μm (GBC). Addition of both GBC and NBC accelerated hydration kinetics and improved early (1-day) and 28-day strength by 20-25% compared to the control. Water permeability, measured by capillary absorption was reduced by about 50% compared to control mortar, due to the addition of 0.50-1% NBC and GBC respectively. GBC is found to be more effective in minimizing loss in strength and water tightness under dry curing condition compared to the control and mortar with NBC and quartz filler respectively. In summary, findings from the study show that finer biochar particles offer superior performance in improving early strength and water tightness compared to normal biochar (with macro-pores), while 28-day properties are similar for mortar with both GBC and NBC respectively.
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Affiliation(s)
- Souradeep Gupta
- Department of Building, School of Design and Environment, National University of Singapore, 4 Architecture Drive, Singapore 117 566, Singapore.
| | - Harn Wei Kua
- Department of Building, School of Design and Environment, National University of Singapore, 4 Architecture Drive, Singapore 117 566, Singapore
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16
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Vega LY, López L, Valdés CF, Chejne F. Assessment of energy potential of wood industry wastes through thermochemical conversions. Waste Manag 2019; 87:108-118. [PMID: 31109509 DOI: 10.1016/j.wasman.2019.01.048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 01/19/2019] [Accepted: 01/31/2019] [Indexed: 06/09/2023]
Abstract
Three kinds of waste resulting from woods from the Colombian industry were selected (PinusPátula, Tectona Grandis and Acacia Mangium) in order to assess their energy potential. Several techniques of physicochemical characterization were used to predict the most appropriate energy exploitation process in each case; which was validated at laboratory scale by carrying out the torrefaction, gasification and combustion process. Results allowed us to the identification of the high energy potential of such wood waste as well as their feasibility to generate torrefied products and synthesis gas as products with greater added values. As a special case, the species Tectona Grandis displayed the greatest conversion and synthesis gas quality on the basis of the gasification process, due to its physicochemical characteristics. These samples can be torrefacted in order to get a new product with higher energy potential than the original sample. Experimental study carried out, allowed us to demonstrate that there is a relationship between biomass chemical composition, yield, and process products. In addition, applying an additivity law of individual effects of the component, it is not possible to predict the process performances.
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Affiliation(s)
- L Y Vega
- Universidad Nacional de Colombia, Facultad de Minas, Escuela de Procesos y Energía, TAYEA Group, Carrera 80 No. 65-223, Medellín, Colombia
| | - Liliana López
- Servicio Nacional de Aprendizaje (SENA), Itagüi, Colombia.
| | - Carlos F Valdés
- Universidad Nacional de Colombia, Facultad de Minas, Escuela de Procesos y Energía, TAYEA Group, Carrera 80 No. 65-223, Medellín, Colombia
| | - F Chejne
- Universidad Nacional de Colombia, Facultad de Minas, Escuela de Procesos y Energía, TAYEA Group, Carrera 80 No. 65-223, Medellín, Colombia.
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17
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Shaheen TI, Emam HE. Sono-chemical synthesis of cellulose nanocrystals from wood sawdust using Acid hydrolysis. Int J Biol Macromol 2018; 107:1599-606. [PMID: 28988844 DOI: 10.1016/j.ijbiomac.2017.10.028] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 09/19/2017] [Accepted: 10/05/2017] [Indexed: 11/20/2022]
Abstract
Cellulose nanocrystal (CNC) is a unique material obtained from naturally occurring cellulose fibers. Owing to their mechanical, optical, chemical, and rheological properties, CNC gained significant interest. Herein, we investigate the potential of commercially non-recyclable wood waste, in particular, sawdust as a new resource for CNC. Isolation of CNC from sawdust was conducted as per acid hydrolysis which induced by ultrasonication technique. Thus, sawdust after being alkali delignified prior sodium chlorite bleaching, was subjected to sulfuric acid with concentration of 65% (w/w) at 60°C for 60min. After complete reaction, CNC were collected by centrifugation followed by dialyzing against water and finally dried via using lyophilization technique. The CNC yield attained values of 15% from purified sawdust. Acid hydrolysis mechanism exactly referred that, the amorphous regions along with thinner as well as shorter crystallites spreaded throughout the cellulose structure are digested by the acid leaving CNC suspension. The latter was freeze-dried to produce CNC powder. A thorough investigation pertaining to nanostructural characteristics of CNC was performed. These characteristics were monitored using TEM, SEM, AFM, XRD and FTIR spectra for following the changes in functionality. Based on the results obtained, the combination of sonication and chemical treatment was great effective in extraction of CNC with the average dimensions (diameter×length) of 35.2±7.4nm×238.7±81.2nm as confirmed from TEM. Whilst, the XRD study confirmed the crystal structure of CNC is obeyed cellulose type I with crystallinity index ∼90%. Cellulose nanocrystals are nominated as the best candidate within the range studied in the area of reinforcement by virtue of their salient textural features.
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18
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Lausselet C, Cherubini F, Del Alamo Serrano G, Becidan M, Strømman AH. Life-cycle assessment of a Waste-to-Energy plant in central Norway: Current situation and effects of changes in waste fraction composition. Waste Manag 2016; 58:191-201. [PMID: 27679967 DOI: 10.1016/j.wasman.2016.09.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 08/25/2016] [Accepted: 09/14/2016] [Indexed: 06/06/2023]
Abstract
Waste-to-Energy (WtE) plants constitute one of the most common waste management options to deal with municipal solid waste. WtE plants have the dual objective to reduce the amount of waste sent to landfills and simultaneously to produce useful energy (heat and/or power). Energy from WtE is gaining steadily increasing importance in the energy mix of several countries. Norway is no exception, as energy recovered from waste currently represents the main energy source of the Norwegian district heating system. Life-cycle assessments (LCA) of WtE systems in a Norwegian context are quasi-nonexistent, and this study assesses the environmental performance of a WtE plant located in central Norway by combining detailed LCA methodology with primary data from plant operations. Mass transfer coefficients and leaching coefficients are used to trace emissions over the various life-cycle stages from waste logistics to final disposal of the ashes. We consider different fractions of input waste (current waste mix, insertion of 10% car fluff, 5% clinical waste and 10% and 50% wood waste), and find a total contribution to Climate Change Impact Potential ranging from 265 to 637gCO2eq/kg of waste and 25 to 61gCO2eq/MJ of heat. The key drivers of the environmental performances of the WtE system being assessed are the carbon biogenic fraction and the lower heating value of the incoming waste, the direct emissions at the WtE plant, the leaching of the heavy metals at the landfill sites and to a lesser extent the use of consumables. We benchmark the environmental performances of our WtE systems against those of fossil energy systems, and we find better performance for the majority of environmental impact categories, including Climate Change Impact Potential, although some trade-offs exist (e.g. higher impacts on Human Toxicity Potential than natural gas, but lower than coal). Also, the insertion of challenging new waste fractions is demonstrated to be an option both to cope with the excess capacity of the Norwegian WtE sector and to reach Norway's ambitious political goals for environmentally friendly energy systems.
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Affiliation(s)
- Carine Lausselet
- Industrial Ecology Program, Norwegian University of Science and Technology, NTNU, Trondheim, Norway.
| | - Francesco Cherubini
- Industrial Ecology Program, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
| | | | | | - Anders Hammer Strømman
- Industrial Ecology Program, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
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Vaidya AA, Gaugler M, Smith DA. Green route to modification of wood waste, cellulose and hemicellulose using reactive extrusion. Carbohydr Polym 2015; 136:1238-50. [PMID: 26572467 DOI: 10.1016/j.carbpol.2015.10.033] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 09/21/2015] [Accepted: 10/11/2015] [Indexed: 11/19/2022]
Abstract
A large volume of wood waste is produced in timber processing industry which traditionally used in low value applications. Here, value addition to the wood waste (Sander dust) and cellulose, hemicellulose isolated thereof by functionalisation using cyclic anhydrides in a solvent-free and green reactive extrusion process is reported. The effect of extrusion temperature, catalyst and different weight ratios of Sander dust (SD):succinic anhydride (SA) on the esterification reaction is evaluated. The esterified products were characterised by the acid value, degree of substitution (DS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), solid state (13)C NMR and thermo-gravimetric analysis (TGA). Under optimum extrusion conditions, mixed esters are formed, with highest acid value obtained for succinylation of cellulose (0.122 g/g at DS of 0.350) which is two times higher compared to succinylated SD (0.059 g/g at a weight gain of 0.452) and hemicellulose (0.043 g/g at DS of 0.290). The reactivity trend for individual anhydride was: (1) SA-Cellulose>SD>hemicellulose; (2) maleic anhydride (MA)-SD>hemicellulose>cellulose and (3) dodecenyl succinic anhydride (DDSA)-SD ≈ cellulose ≫ hemicellulose. The pendant free carboxyl groups generated through functionalisation of wood waste, cellulose and hemicellulose without the presence of polymeric carriers will allow more tailored or targeted modification of wood-plastic composites.
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Affiliation(s)
- Alankar A Vaidya
- Scion, Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua 3046, New Zealand.
| | - Marc Gaugler
- Scion, Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua 3046, New Zealand
| | - Dawn A Smith
- Scion, Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua 3046, New Zealand
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Hwang IH, Kobayashi J, Kawamoto K. Characterization of products obtained from pyrolysis and steam gasification of wood waste, RDF, and RPF. Waste Manag 2014; 34:402-410. [PMID: 24246576 DOI: 10.1016/j.wasman.2013.10.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 10/04/2013] [Accepted: 10/09/2013] [Indexed: 06/02/2023]
Abstract
Pyrolysis and steam gasification of woody biomass chip (WBC) obtained from construction and demolition wastes, refuse-derived fuel (RDF), and refuse paper and plastic fuel (RPF) were performed at various temperatures using a lab-scale instrument. The gas, liquid, and solid products were examined to determine their generation amounts, properties, and the carbon balance between raw material and products. The amount of product gas and its hydrogen concentration showed a considerable difference depending on pyrolysis and steam gasification at higher temperature. The reaction of steam and solid product, char, contributed to an increase in gas amount and hydrogen concentration. The amount of liquid products generated greatly depended on temperature rather than pyrolysis or steam gasification. The compositions of liquid product varied relying on raw materials used at 500°C but the polycyclic aromatic hydrocarbons became the major compounds at 900°C irrespective of the raw materials used. Almost fixed carbon (FC) of raw materials remained as solid products under pyrolysis condition whereas FC started to decompose at 700°C under steam gasification condition. For WBC, both char utilization by pyrolysis at low temperature (500°C) and syngas recovery by steam gasification at higher temperature (900°C) might be practical options. From the results of carbon balance of RDF and RPF, it was confirmed that the carbon conversion to liquid products conspicuously increased as the amount of plastic increased in the raw material. To recover feedstock from RPF, pyrolysis for oil recovery at low temperature (500°C) might be one of viable options. Steam gasification at 900°C could be an option but the method of tar reforming (e.g. catalyst utilization) should be considered.
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Affiliation(s)
- In-Hee Hwang
- Laboratory of Solid Waste Disposal Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan.
| | - Jun Kobayashi
- Department of Mechanical Engineering, Faculty of Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan
| | - Katsuya Kawamoto
- Research Center for Material Cycles and Waste Management, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
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