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Lúcio DSG, Menegassi LC, Lima ACM, Gomes TM, Tommaso G. Assessing the phytotoxicity of wastewater from the structured-bed hybrid baffled reactor (SBHBR) for agricultural reuse during the germination phase. Sci Total Environ 2024; 918:170449. [PMID: 38290672 DOI: 10.1016/j.scitotenv.2024.170449] [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: 09/06/2023] [Revised: 01/23/2024] [Accepted: 01/24/2024] [Indexed: 02/01/2024]
Abstract
This study investigated the quality of anaerobic (AnE) and oxic/anoxic (O/A) effluents from a continuous-feed structured-bed hybrid baffled reactor (SBHBR) treating dairy wastewater impacts on lettuce and cucumber germination. While sustainable technologies like SBHBR have successfully removed organic matter and total nitrogen from dairy wastewater, residual concentrations may still represent a risk to water resources. Therefore, phytotoxicity bioassays were conducted with lettuce and cucumber seeds in contact with effluent during early stages to evaluate the potential implications of dairy wastewater reuse in agriculture. The study also explored the potential of SBHBR technology in promoting water resource preservation and creating a sustainable energy and nutrient cycling system. The physicochemical parameters of both effluents were characterized, and the phytotoxicity was evaluated by measuring the germination index (GI), root length (RL), the number of germinated seeds (SG), and epicotyl elongation (EE) for both lettuce and cucumber. The study revealed that the O/A effluent demonstrated lower phytotoxicity than the AnE effluent. The mean results indicate that the O/A zone wastewater was more conducive to cucumber germination than the AnE zone. Moreover, a positive influence of organic matter in the effluent on root growth and epicotyl elongation in cucumber, as well as the presence of nitrogen on the germination index, in both plant species. These findings emphasize the importance of considering effluent characteristics for suitable irrigation, highlighting SBHBR's potential as an effective solution for treating and reusing dairy wastewater in agriculture. This approach helps conserve water resources and promote a sustainable energy and nutrient cycling system.
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Affiliation(s)
- Danilo Santiago G Lúcio
- Laboratory of Environmental Biotechnology, Department of Food Engineering, Faculty of Animal Science and Food Engineering, University of São Paulo, Brazil
| | - Luana C Menegassi
- Department of Biosystems Engineering, Luiz de Queiroz College of Agriculture, University of São Paulo, Brazil
| | - Ana Carolina M Lima
- Department of Biosystems Engineering, Luiz de Queiroz College of Agriculture, University of São Paulo, Brazil
| | - Tamara Maria Gomes
- Department of Biosystems Engineering, Faculty of Animal Science and Food Engineering, University of São Paulo, Brazil
| | - Giovana Tommaso
- Laboratory of Environmental Biotechnology, Department of Food Engineering, Faculty of Animal Science and Food Engineering, University of São Paulo, Brazil.
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2
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Silva MA, Nascimento Júnior JCD, Thomaz DV, Maia RT, Costa Amador V, Tommaso G, Coelho GD. Comparative homology of Pleurotus ostreatus laccase enzyme: Swiss model or Modeller? J Biomol Struct Dyn 2023; 41:8927-8940. [PMID: 36310115 DOI: 10.1080/07391102.2022.2138975] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 10/17/2022] [Indexed: 11/05/2022]
Abstract
Laccases stand out in the industrial context due to their versatile biotechnological applications. Although these enzymes are frequently investigated, currently, Pleurotus ostreatus laccase structural model is unknown. Therefore, this research aims to predict and validate a P. ostreatus laccase theoretical model by means of comparative homology. The laccase target's primary structure (AOM73725.1) was obtained from the NCBI database, the model was predicted from homologous structures obtained from the PDB (PDB-ID: 5A7E, 2HRG, 4JHU, 1GYC) using the Swiss-Model and Modeller, and was refined in GalaxyRefine. The models were validated using PROCHECK, VERIFY 3D, ERRAT, PROVE and QMEAN Z-score servers. Moreover, molecular docking between the laccase model (Lacc4MN) and ABTS was performed on AutoDock Vina. The models that were generated by the Modeller showed superior stereochemical and structural characteristics to those predicted by the Swiss Model. The refinement made it difficult to stabilize the copper atoms which are typical of laccases. The Lacc4MN model showed the interactions between the amino acids in the active site of the laccase and the copper atoms, thereby hinting the stabilization of the metal through electrostatic interactions with histidine and cysteine. The molecular docking between Lacc4MN and ABTS showed negative free energy and the formation of two hydrogen bonds involving the amino acids ASP 208 and GLY 268, and a Pi-sulfur bond between residue HIS 458 and ABTS, which demonstrates the typical catalytic functionality of laccases. Furthermore, the theoretical model Lacc4MN presented stereochemical and structural characteristics that allow its use in silico tests.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Marco Antonio Silva
- Laboratory of Environmental Biotechnology, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil
| | - José Cordeiro do Nascimento Júnior
- Center for Water Resources and Environmental Studies, São Carlos School of Engineering, University of São Paulo, São Carlos, São Paulo, Brazil
| | - Douglas Vieira Thomaz
- National Enterprise for nanoScience and nanoTechnology (NEST), Istituto Nanoscienze-CNR and Scuola Normale Superiore, Pisa, Italy
| | - Rafael Trindade Maia
- Academic Unit of Rural Education; Center for Sustainable Development of the Semi-Arid, Federal University of Campina Grande, Sumé, Paraiba, Brazil
| | - Vinícius Costa Amador
- Bioscience Center, Genetics Department, Federal University of Pernambuco, Recife, Brazil
| | - Giovana Tommaso
- Laboratory of Environmental Biotechnology, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil
| | - Glauciane Danusa Coelho
- Academic Unit of Biotechnology Engineering; Center for Sustainable Development of the Semi-Arid, Federal University of Campina Grande, Sumé, Paraiba, Brazil
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Medeiros DL, Santos CMQD, Ribeiro R, Tommaso G. The dissolved methane recovery from treated sewage in upflow anaerobic sludge blanket (UASB) reactors: The energy demand, carbon footprint and financial cost. J Environ Manage 2023; 343:118258. [PMID: 37247549 DOI: 10.1016/j.jenvman.2023.118258] [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: 01/24/2023] [Revised: 05/14/2023] [Accepted: 05/23/2023] [Indexed: 05/31/2023]
Abstract
The goal of this research was to quantify the energy demand and carbon footprint over the life cycle, along with the financial cost, of sewage treatment with the recovery of dissolved methane (d-CH4). The sewage treatment is composed of pre-treatment, followed by treatment in upflow anaerobic sludge blanket (UASB) reactors, trickling filter and secondary decanter, post-treatment with disinfection, and biogas recovery in the three-phase separator of the UASB reactor. The methods used in this study were attributional life cycle assessment and techno-economic analysis - LCA and TEA, respectively. The energy demand, carbon footprint and financial cost for 1 m3 sewage treatment in the evaluated scenario without d-CH4 recovery (S1) were 3.4 MJ, 1.7 kg CO2eq and 0.17 USD respectively, while those with d-CH4 recovery (S2) varied by 12%, -16% and 2.3% compared to S1. The produced biogas for lower heating value in S2 (2.6 MJ) was 27% higher than that in S1 (2.0 MJ) and this varied from 1.3 MJ to 4.6 MJ in the scenarios for different influent chemical oxygen demand (COD) in the sewage treatment plant (STP) and COD removal efficiency in the UASB reactor. The highest eco-efficiency for 1 MJ heat production from the STP biogas was achieved in the scenario with d-CH4 recovery, higher influent COD, higher COD removal efficiency in the UASB reactor, d-CH4 saturation, photovoltaic electricity supply, and a higher energy efficiency in d-CH4 recovery combined (S2,COD+,R+,S,PV,EE+), which reduced the energy demand by 55%, carbon footprint by 66% and financial cost by 63% compared to S1. Furthermore, the STP functionality change from a single-product (biogas) to a multi-product (biogas, water for reuse and biosolid fertilizer) approach (S1,WR, BF and S2,WR,BF) made the biogas a competitive product compared to those from fossil sources. Therefore, resource recovery from the sewage treatment in higher influent COD, higher COD removal efficiency, the use of a more efficient, clean and economical electricity source and higher energy efficiency in d-CH4 recovery in a multi-product STP contribute to achieving the energy self-sufficiency over the life cycle while reducing the carbon footprint and financial cost of its products.
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Affiliation(s)
- Diego Lima Medeiros
- Clean Technologies Network (TECLIM), Federal University of Maranhão (UFMA), Balsas Campus, MA-140 Highway, Km 4, 65800-000, Balsas, MA, Brazil; Environmental Biotechnology Laboratory (LBA), Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Fernando Costa Campus, Duque de Caxias Norte Avenue, 225, Jardim Elite, 13635-900, Pirassununga, SP, Brazil.
| | - Cássio Minghini Quirino Dos Santos
- Biological Processes Laboratory (LPB), Department of Hydraulics and Sanitation (SHS), São Carlos School of Engineering (EESC), University of São Paulo (USP), Campus 2, João Dagnone Avenue, 1100, Block 4-F, Santa Angelina, 13563-120, São Carlos, SP, Brazil.
| | - Rogers Ribeiro
- Environmental Biotechnology Laboratory (LBA), Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Fernando Costa Campus, Duque de Caxias Norte Avenue, 225, Jardim Elite, 13635-900, Pirassununga, SP, Brazil.
| | - Giovana Tommaso
- Environmental Biotechnology Laboratory (LBA), Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Fernando Costa Campus, Duque de Caxias Norte Avenue, 225, Jardim Elite, 13635-900, Pirassununga, SP, Brazil.
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Lúcio DSG, Dias MES, Ribeiro R, Tommaso G. Evaluating the potential of a new reactor configuration to enhance simultaneous organic matter and nitrogen removal in dairy wastewater treatment. Environ Sci Pollut Res Int 2023; 30:57490-57502. [PMID: 36966249 DOI: 10.1007/s11356-023-26341-6] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 03/04/2023] [Indexed: 05/10/2023]
Abstract
The dairy industry is a very productive sector worldwide and known for producing great volumes of wastewater that is rich in organic matter and nutrients. Apart from fat, the organic matter in such effluents is easily degradable, demanding an external carbon source for conventional denitrification. In this manner, new configurations of reactors promoting a suitable environment for more sustainable nitrogen removal are beyond required-they are paramount. Therefore, the performance of a structured-bed hybrid baffled reactor (SBHBR) with anaerobic and oxic/anoxic chambers was designed and assessed for treating different dairy wastewaters. A combination of baffled and biofilm-structured systems under intermittent aeration was the solution proposed to obtain a new method for nitrogen removal under low COD/TN ratios. The COD/TN ratios tested were 2.1 ± 0.6, 0.84 ± 0.5, and 0.35 ± 0.1 in the inlet of the O/A chambers for operational stages I, II, and III, respectively. The SBHBR provided COD removal efficiencies above 90% in all experimental stages. During stage III, the process had nitrification and denitrification efficiencies of 85.9 ± 17% and 85.2 ± 9%, respectively, resulting in a TN removal efficiency of 74.6 ± 14.7%. Stoichiometric calculations were used to corroborate the activity of bacteria that could perform the anammox pathways as their main mechanisms.
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Affiliation(s)
- Danilo S G Lúcio
- Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Pirassununga, SP, Brazil
| | - Maria Eduarda S Dias
- Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Pirassununga, SP, Brazil
| | - Rogers Ribeiro
- Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Pirassununga, SP, Brazil
| | - Giovana Tommaso
- Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Pirassununga, SP, Brazil.
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Dias MES, Takeda PY, Fuess LT, Tommaso G. Inoculum-to-substrate ratio and solid content effects over in natura spent coffee grounds anaerobic digestion. J Environ Manage 2023; 325:116486. [PMID: 36308963 DOI: 10.1016/j.jenvman.2022.116486] [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: 07/04/2022] [Revised: 09/19/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
Coffee is the second most traded commodity worldwide, and its production is associated with the generation of a large number of residues, which are underused and disposed of in landfills. Notably, the coffee industry annually generates approximately 6 million tons of industrial spent coffee ground (ISCG) when extracting coffee flavorings to produce soluble coffee. That resource loss scenario has been highlighted in sustainable waste management contexts as an opportunity to improve the coffee circular economy. Despite ISCG bioconversion to methane potentially meets the waste-to-energy purposes of reducing residues disposal in landfills, decreasing greenhouse gas (GHG) emissions, and increasing renewable energy sources, data about anaerobic digestion (AD) of ISCG remains quite restricted. That limitation becomes more apparent owing to the lack of data focusing on AD key parameters for ISCG as substrate. This study assessed the influence of inoculum-to-substrate ratio (ISR) and the solid content influences on mesophilic (37 °C) ISCG-AD throughout the Response Surface Methodology (RSM) and Central Composite Design (CCD). Results revealed that both factors, ISR and solid content, should be kept above a certain threshold of 0.5 and 6.0 gTVS L-1 to ensure experimental reliability, as well as reproductively and above 1.0 and 8.0 gTVS L-1 to avoid underestimation on the MY potential achieved. Concerning ISCG-AD kinetics, the quadratic model optimum condition was at 1.36 and 14.83 gTVS L-1 for ISR and solid content, respectively. This optimum range for ISR and solid content could guide further development of process configurations for mono- and co-digestion of ISCG, avoiding underestimation of the MY potential and extended incubation periods.
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Affiliation(s)
- M E S Dias
- Biological Processes Laboratory, Center for Research, Development and Innovation in Environmental Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), Block 4-F, 1100 João Dagnone Avenue, Santa Angelina, São Carlos/SP, Brazil.
| | - P Y Takeda
- Biological Processes Laboratory, Center for Research, Development and Innovation in Environmental Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), Block 4-F, 1100 João Dagnone Avenue, Santa Angelina, São Carlos/SP, Brazil.
| | - L T Fuess
- Chemical Engineering Department, Polytechnic School, University of São Paulo, Av. Prof. Lineu Prestes, 580, Bloco 18 - Conjunto das Químicas, 05508-000, São Paulo, SP, Brazil.
| | - G Tommaso
- Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Pirassununga/SP, Brazil.
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6
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Li R, Liu D, Zhang Y, Tommaso G, Si B, Liu Z, Duan N. Enhanced anaerobic digestion of post-hydrothermal liquefaction wastewater: Bio-methane production, carbon distribution and microbial metabolism. Sci Total Environ 2022; 837:155659. [PMID: 35513144 DOI: 10.1016/j.scitotenv.2022.155659] [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: 12/28/2021] [Revised: 04/28/2022] [Accepted: 04/28/2022] [Indexed: 06/14/2023]
Abstract
Hydrothermal liquefaction (HTL) is a cost-effective and environment-friendly technology for using biomass to produce bio-crude oil. The critical challenge of HTL is its complicated aqueous product containing high concentrations of organics and diverse toxicants. This paper reports the continuous anaerobic digestion of raw and zeolite-adsorbed Chlorella HTL wastewater using up-flow anaerobic sludge bed reactors. The bio-methane production capacity, total carbon distribution and microbial response were investigated. The anaerobic process was severely suppressed when more than 20% raw wastewater was fed; while it showed essentially improved performance till 60% pre-treated wastewater was added. Produced methane contained 17.3% of the total carbon in feedstock, which was comparable with the value (16.7%) when 25% of raw wastewater was added. The metagenomic analysis revealed distinct microbial community structures in different stages and feedstock shifts. The abundance of functional genes was consistent with anaerobic digester performance.
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Affiliation(s)
- Ruirui Li
- Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China; Department of Chemical Engineering, Institute of Biochemical Engineering, Tsinghua University, Beijing, China
| | - Dianlei Liu
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
| | - Yuanhui Zhang
- Department of Agricultural and Biological Engineering, Univeristy of Illinois at Urbana-Champaign, 1304 W Pennsylvania Ave, Urbana, IL 61801, USA
| | - Giovana Tommaso
- Laboratory of Environmental Biotechnology, Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), 225 N Duque de Caxias. Ave., Jardim Elite, Pirassununga, SP, Brazil
| | - Buchun Si
- Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
| | - Zhidan Liu
- Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
| | - Na Duan
- Laboratory of Environment-Enhancing Energy (E2E) and Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.
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Santos CMQ, Ditchfield C, Tommaso G, Ribeiro R. Use of spray nozzles to recover dissolved methane from an Upflow Anaerobic Sludge Blanket (UASB) reactor effluent. Water Sci Technol 2022; 85:1538-1548. [PMID: 35290230 DOI: 10.2166/wst.2022.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Methane is a powerful greenhouse gas and a source of energy. Recovering this gas means lower greenhouse gas emission and potential reduction of energetic costs. The lack of full-scale results, the use of different methodologies to detect dissolved methane (d-CH4) and the fact that no process to remove d-CH4 from anaerobic effluents is energetically or economically viable at full-scale urged a different approach to the problem. To avoid methodological interference and facilitate comparison of results the Standard Test Method number D8028-17 published by ASTM International can be used to determine d-CH4. The use of real anaerobic reactor effluent also helps results to be compared. In this study, 80 samples from a full-scale anaerobic reactor showed an average concentration of dissolved methane of 14.9 mg·L-1, meaning an emission of 229 kg of CO2 eq·h-1 and an average of 113.5 kW wasted. Using spray nozzles, an alternative to the methods being researched, the average methane recovery was 11.5 mg·L-1 of CH4, an efficiency of 81.6%, meaning 177 kg of CO2 eq·h-1 emissions avoided and 87.9 kW of recoverable energy.
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Affiliation(s)
- C M Q Santos
- Biological Processes Laboratory, Center for Research, Development and Innovation in Environmental Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), Block 4-F, 1100 João Dagnone Avenue, Santa Angelina, São Carlos, SP, Brazil E-mail:
| | - C Ditchfield
- Biopolymer Technology Laboratory, Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Pirassununga, SP, Brazil
| | - G Tommaso
- Environmental Biotechnology Laboratory, Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Pirassununga, SP, Brazil
| | - R Ribeiro
- Environmental Biotechnology Laboratory, Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Pirassununga, SP, Brazil
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Egerland Bueno B, Américo Soares L, Quispe-Arpasi D, Kimiko Sakamoto I, Zhang Y, Amancio Varesche MB, Ribeiro R, Tommaso G. Anaerobic digestion of aqueous phase from hydrothermal liquefaction of Spirulina using biostimulated sludge. Bioresour Technol 2020; 312:123552. [PMID: 32502889 DOI: 10.1016/j.biortech.2020.123552] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 03/12/2020] [Revised: 05/13/2020] [Accepted: 05/15/2020] [Indexed: 06/11/2023]
Abstract
Hydrothermal liquefaction is a process that converts wet biomass into biofuels, more specifically bio-crude oil. During the process, post hydrothermal liquefaction waste water (PHWW) is generated, rich in nutrient and organic matter, however potentially toxic. Anaerobic digestion of PHWW from Spirulina, was evaluated using biostimulated sludge as a strategy to optimize the process. The biostimulation was conducted in a sequential batch reactor fed with organic acids and methanol aiming at development of acetogenic and methanogenic microorganism. Anaerobic biodegradability batch assays were performed, with biostimulated sludge and with non-biostimulated sludge, using increasing PHWW concentrations. Biostimulated sludge were more favourable for reaching higher methane yields at higher organic matter concentrations in comparison to non-biostimulated sludge, presenting less inhibition at conditions tested. Biostimulation was a key process to select and favour potential microorganisms involved in specialized uptake of recalcitrant compounds, such as Mesotoga and Methanomethylovorans.
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Affiliation(s)
- Beatriz Egerland Bueno
- Laboratory of Environmental Biotechnology, Department of Food Engineering, University of São Paulo, 225, Duque de Caxias Norte, Pirassununga, São Paulo 13635-900, Brazil
| | - Laís Américo Soares
- Laboratory of Biological Processes, Department of Hydraulics and Sanitation, School of Engineering of São Carlos, University of São Paulo, 1100, João Dagnone Avenue, São Carlos 13563120, Brazil
| | - Diana Quispe-Arpasi
- Laboratory of Environmental Biotechnology, Department of Food Engineering, University of São Paulo, 225, Duque de Caxias Norte, Pirassununga, São Paulo 13635-900, Brazil
| | - Isabel Kimiko Sakamoto
- Laboratory of Biological Processes, Department of Hydraulics and Sanitation, School of Engineering of São Carlos, University of São Paulo, 1100, João Dagnone Avenue, São Carlos 13563120, Brazil
| | - Yuanhui Zhang
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, 1304 W Pennsylvania Avenue, Urbana, IL 61801, USA
| | - Maria Bernadete Amancio Varesche
- Laboratory of Biological Processes, Department of Hydraulics and Sanitation, School of Engineering of São Carlos, University of São Paulo, 1100, João Dagnone Avenue, São Carlos 13563120, Brazil
| | - Rogers Ribeiro
- Laboratory of Environmental Biotechnology, Department of Food Engineering, University of São Paulo, 225, Duque de Caxias Norte, Pirassununga, São Paulo 13635-900, Brazil
| | - Giovana Tommaso
- Laboratory of Environmental Biotechnology, Department of Food Engineering, University of São Paulo, 225, Duque de Caxias Norte, Pirassununga, São Paulo 13635-900, Brazil.
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Rosero-Henao JC, Bueno BE, de Souza R, Ribeiro R, Lopes de Oliveira A, Gomide CA, Gomes TM, Tommaso G. Potential benefits of near critical and supercritical pre-treatment of lignocellulosic biomass towards anaerobic digestion. Waste Manag Res 2019; 37:74-82. [PMID: 30409077 DOI: 10.1177/0734242x18806998] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Vegetable crop residues, such as sugarcane bagasse (SCB), despite their limited biodegradability, are potential materials for anaerobic processes because of their low cost, high availability, and sugar content. The difficulty of biodegrading this type of material is primarily related to its chemical composition and to the complex interactions between its compounds (cellulose, hemicelluloses, and lignin). Thus, the following supercritical and near critical carbon dioxide (CO2) pre-treatments were evaluated with and without the addition of sodium hydroxide (NaOH): (i) 40°C/70 kgf·cm-2; (ii) 60°C/200 kgf·cm-2; and (iii) 80°C/200 kgf·cm-2, aiming to enhance the anaerobic biodegradability of SCB. The methanogenic production of SCB increased in all cases in which the material was pre-treated, except the case in which NaOH was used together with a high temperature. The condition using CO2 at 60°C/200 kgf·cm-2 was highlighted with a lignin removal of 8.07% and an accumulated methane production of 0.6498 ± 0.014 LN (273.15K, 1.01325 × 105 Pa), 23.4% higher than the value obtained with the untreated material. This condition also showed the highest net energy at the energy balance that was calculated for comparison with the tested conditions. The results showed that pre-treatments with near critical and supercritical fluids have the potential to reduce structural obstacles of lignocellulosic materials and to enhance their anaerobic biodegradability.
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Affiliation(s)
- Jenny Carolina Rosero-Henao
- 1 Department of Food Engineering, Faculty of Animal Science and Food Engineering, University of Sao Paulo, Brazil
| | - Beatriz Egerland Bueno
- 1 Department of Food Engineering, Faculty of Animal Science and Food Engineering, University of Sao Paulo, Brazil
| | - Raquel de Souza
- 2 Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing, People's Republic of China
| | - Rogers Ribeiro
- 1 Department of Food Engineering, Faculty of Animal Science and Food Engineering, University of Sao Paulo, Brazil
| | - Alessandra Lopes de Oliveira
- 1 Department of Food Engineering, Faculty of Animal Science and Food Engineering, University of Sao Paulo, Brazil
| | - Catarina Abdalla Gomide
- 3 Department of Animal Science, Faculty of Animal Science and Food Engineering, University of Sao Paulo, Brazil
| | - Tamara Maria Gomes
- 4 Department of Biosystems Engineering, Faculty of Animal Science and Food Engineering, University of Sao Paulo, Brazil
| | - Giovana Tommaso
- 1 Department of Food Engineering, Faculty of Animal Science and Food Engineering, University of Sao Paulo, Brazil
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Domingues R, Sanches T, Silva G, Bueno B, Ribeiro R, Kamimura E, Franzolin Neto R, Tommaso G. Effect of enzymatic pretreatment on the anaerobic digestion of milk fat for biogas production. Food Res Int 2015. [DOI: 10.1016/j.foodres.2015.03.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Gai C, Zhang Y, Chen WT, Zhou Y, Schideman L, Zhang P, Tommaso G, Kuo CT, Dong Y. Characterization of aqueous phase from the hydrothermal liquefaction of Chlorella pyrenoidosa. Bioresour Technol 2015; 184:328-335. [PMID: 25466993 DOI: 10.1016/j.biortech.2014.10.118] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [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: 08/18/2014] [Revised: 10/22/2014] [Accepted: 10/24/2014] [Indexed: 05/26/2023]
Abstract
This study investigated the characteristics of aqueous phase from hydrothermal liquefaction of low-lipid microalgae Chlorella pyrenoidosa. The interactions of operating conditions, including reaction temperature, retention time and total solid ratio were evaluated by response surface methodology. The chemical oxygen demand, total nitrogen and total phosphorus were selected as indicators of the property of AP. Results indicated that total solid ratio was found to be the dominant factor affecting the nutrient recovery efficiencies of AP. Based on energy recovery, GC-MS indicated that the AP at two optimized operating conditions (280 °C, 60 min, 35 wt.% and 300 °C, 60 min, 25 wt.%) were observed to have a higher concentration of organic acids (10.35% and 8.34%) while the sample (260 °C, 30 min, 35 wt.%) was observed to have the highest concentration of N&O-heterocyclic compounds (36.16%).
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Affiliation(s)
- Chao Gai
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing 100085, PR China
| | - Yuanhui Zhang
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - Wan-Ting Chen
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Yan Zhou
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Lance Schideman
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Peng Zhang
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Giovana Tommaso
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Laboratory of Environmental Biotechnology, Department of Food Engineering, University of Sao Paulo, 225, Duque de Caxias Norte, Pirassununga, Sao Paulo 13635-900, Brazil
| | - Chih-Ting Kuo
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Yuping Dong
- Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Department of Mechanical Engineering, Shandong University, Jinan 250061, PR China
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12
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Tommaso G, Chen WT, Li P, Schideman L, Zhang Y. Chemical characterization and anaerobic biodegradability of hydrothermal liquefaction aqueous products from mixed-culture wastewater algae. Bioresour Technol 2015; 178:139-146. [PMID: 25455086 DOI: 10.1016/j.biortech.2014.10.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [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: 07/31/2014] [Revised: 10/01/2014] [Accepted: 10/04/2014] [Indexed: 05/04/2023]
Abstract
This study examined the chemical characteristics and the anaerobic degradability of the aqueous product from hydrothermal liquefaction (HTL-ap) from the conversion of mixed-culture algal biomass grown in a wastewater treatment system. The effects of the HTL reaction times from 0 to 1.5 h, and reaction temperatures from 260 °C to 320 °C on the anaerobic degradability of the HTL-ap were quantified using biomethane potential assays. Comparing chemical oxygen demand data for HTL-ap from different operating conditions, indicated that organic matter may partition from organic phase to aqueous phase at 320 °C. Moderate lag phase and the highest cumulative methane production were observed when HTL-ap was obtained at 320 °C. The longest lag phase and the smallest production rate were observed in the process fed with HTL-ap obtained at 300 °C. Nevertheless, after overcoming adaptation issues, this HTL-ap led to the second highest accumulated specific methane production. Acetogenesis was identified as a possible rate-limiting pathway.
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Affiliation(s)
- Giovana Tommaso
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, 1304 W Pennsylvania Avenue, Urbana, IL 61801, USA; Laboratory of Environmental Biotechnology, Department of Food Engineering, University of Sao Paulo, 225, Duque de Caxias Norte, Pirassununga, Sao Paulo 13635-900, Brazil
| | - Wan-Ting Chen
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, 1304 W Pennsylvania Avenue, Urbana, IL 61801, USA
| | - Peng Li
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, 1304 W Pennsylvania Avenue, Urbana, IL 61801, USA
| | - Lance Schideman
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, 1304 W Pennsylvania Avenue, Urbana, IL 61801, USA
| | - Yuanhui Zhang
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, 1304 W Pennsylvania Avenue, Urbana, IL 61801, USA.
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13
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Zhou Y, Schideman L, Zheng M, Martin-Ryals A, Li P, Tommaso G, Zhang Y. Anaerobic digestion of post-hydrothermal liquefaction wastewater for improved energy efficiency of hydrothermal bioenergy processes. Water Sci Technol 2015; 72:2139-47. [PMID: 26676001 DOI: 10.2166/wst.2015.435] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Hydrothermal liquefaction (HTL) is a promising process for converting wet biomass and organic wastes into bio-crude oil. It also produces an aqueous product referred to as post-hydrothermal liquefaction wastewater (PHWW) containing up to 40% of the original feedstock carbon, which reduces the overall energy efficiency of the HTL process. This study investigated the feasibility of using anaerobic digestion (AD) to treat PHWW, with the aid of activated carbon. Results showed that successful AD occurred at relatively low concentrations of PHWW (≤ 6.7%), producing a biogas yield of 0.5 ml/mg CODremoved, and ∼53% energy recovery efficiency. Higher concentrations of PHWW (≥13.3%) had an inhibitory effect on the AD process, as indicated by delayed, slower, or no biogas production. Activated carbon was shown to effectively mitigate this inhibitory effect by enhancing biogas production and allowing digestion to proceed at higher PHWW concentrations (up to 33.3%), likely due to sequestering toxic organic compounds. The addition of activated carbon also increased the net energy recovery efficiency of AD with a relatively high concentration of PHWW (33.3%), taking into account the energy for producing activated carbon. These results suggest that AD is a feasible approach to treat PHWW, and to improve the energy efficiency of the HTL processes.
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Affiliation(s)
- Yan Zhou
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA E-mail:
| | - Lance Schideman
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA E-mail:
| | - Mingxia Zheng
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Ana Martin-Ryals
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA E-mail:
| | - Peng Li
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA E-mail:
| | - Giovana Tommaso
- Laboratory of Environmental Biotechnology, Department of Food Engineering, University of Sao Paulo, Sao Paulo, 13635, Brazil
| | - Yuanhui Zhang
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA E-mail:
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14
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Cavaleiro AJ, Ferreira T, Pereira F, Tommaso G, Alves MM. Biochemical methane potential of raw and pre-treated meat-processing wastes. Bioresour Technol 2013; 129:519-525. [PMID: 23266854 DOI: 10.1016/j.biortech.2012.11.083] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 11/17/2012] [Accepted: 11/19/2012] [Indexed: 06/01/2023]
Abstract
Raw and pre-treated greaves and rinds, two meat-processing wastes, were assessed for biochemical methane potential (BMP). Combinations of temperature (25, 55, 70 and 120 °C), NaOH (0.3 g g(-1) waste volatile solids) and lipase from Candida rugosa (10 U g(-1) fat) were applied to promote wastes hydrolysis, and the effect on BMP was evaluated. COD solubilisation was higher (66% for greaves; 55% for rinds) when greaves were pre-treated with NaOH at 55 °C and lipase was added to rinds after autoclaving. Maximum fat hydrolysis (52-54%) resulted from NaOH addition, at 55 °C for greaves and 25 °C for rinds. BMP of raw greaves and rinds was 707±46 and 756±56 L CH4 (at standard temperature and pressure) kg(-1)VS, respectively. BMP of rinds improved 25% by exposure to 70 °C; all other strategies tested had no positive effect on BMP of both wastes, and anaerobic biodegradability was even reduced by the combined action of base and temperature.
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Affiliation(s)
- A J Cavaleiro
- Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
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15
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Penteado TZ, Santana RSS, Dibiazi ALB, de Pinho SC, Ribeiro R, Tommaso G. Effect of agitation on the performance of an anaerobic sequencing batch biofilm reactor in the treatment of dairy effluents. Water Sci Technol 2011; 63:995-1003. [PMID: 21411951 DOI: 10.2166/wst.2011.281] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Agitation rate is an important parameter in the operation of Anaerobic Sequencing Biofilm Batch Reactors (ASBBRs), and a proper agitation rate guarantees good mixing, improves mass transfer, and enhances the solubility of the particulate organic matter. Dairy effluents have a high amount of particulate organic matter, and their anaerobic digestion presents inhibitory intermediates (e.g., long-chain fatty acids). The importance of studying agitation in such batch systems is clear. The present study aimed to evaluate how agitation frequency influences the anaerobic treatment of dairy effluents. The ASBBR was fed with wastewater from milk pasteurisation process and cheese manufacture with no whey segregation. The organic matter concentration, measured as chemical oxygen demand (COD), was maintained at approximately 8,000 mg/L. The reactor was operated with four agitation frequencies: 500 rpm, 350 rpm, 200 rpm, and no agitation. In terms of COD removal efficiency, similar results were observed for 500 rpm and 350 rpm (around 90%) and for 200 rpm and no agitation (around 80%). Increasing the system's agitation thus not only improved the global efficiency of organic matter removal but also influenced volatile acid production and consumption and clearly modified this balance in each experimental condition.
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Affiliation(s)
- T Z Penteado
- Environmental Biotechnology Laboratory - Department of Food Engineering - College of Animal Science and Food Engineering University of Sao Paulo - Av Duque de Caxias Norte 225. Pirassununga - SP, CEP 13565-900.
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16
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Tommaso G, Ribeiro R, Varesche MBA, Zaiat M, Foresti E. Influence of multiple substrates on anaerobic protein degradation in a packed-bed bioreactor. Water Sci Technol 2003; 48:23-31. [PMID: 14640196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Data on the influence of substrate composition on the anaerobic degradation of bovine serum albumin (BSA) in a bench-scale packed-bed reactor are presented and discussed from the standpoint of substrate consumption kinetics. The experiments were carried out in a horizontal-flow anaerobic immobilized biomass (HAIB) reactor fed with BSA based substrates. BSA was the sole carbon source in the first one, while the others were composed of BSA, carbohydrates and lipids. In all the experiments, the HAIB reactor was operated at the hydraulic detention time of 4 hours. The reactor's performance was evaluated based on physicochemical and chromatographic analyses and also on microscopy techniques. A kinetic model of irreversible first-order series-parallel reactions with two intermediate products was proposed, allowing evaluation of the microbial consortium's affinity with the substrates and the metabolic compounds formed. As the first-order kinetic model adhered quite well to the experimental data, the initial protein degradation rates (k) were estimated. The presence of carbohydrates and lipids led the initial protein degradation rate to be reduced. However, the system fed with protein and carbohydrates showed higher process stability.
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Affiliation(s)
- G Tommaso
- Laboratório de Processos Biológicos, Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo, Av. Trabalhador São-carlense, 400, CEP 13566-590, São Carlos, São Paulo, Brasil
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17
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Tommaso G, Varesche M, Zaiat M, Vazoller R, Foresti E. Morphological observation and microbial population dynamics in anaerobic polyurethane foam biofilm degrading gelatin. Braz J Chem Eng 2002. [DOI: 10.1590/s0104-66322002000300003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | - M. Zaiat
- Universidade de São Paulo, Brazil
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