1
|
Ferronato N, Mertenat A, Zurbrügg C, Torretta V. Can tourism support resource circularity in small islands? On-field analysis and intervention proposals in Madagascar. Waste Manag Res 2024; 42:406-417. [PMID: 37455466 PMCID: PMC11064469 DOI: 10.1177/0734242x231187561] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 06/17/2023] [Indexed: 07/18/2023]
Abstract
Open dumping and burning of solid waste are common practices in low-income countries. On small and touristic islands, the problem is exacerbated due to the additional volume of waste amount generated by tourists. This article presents how, using Nosy Be island in Madagascar as a case study, waste recovery and recycling can be fostered by tourism to tackle the waste challenge. About 95% of the waste of Nosy Be is openly dumped, discarded to sea or openly burned. Field analysis, interviews with local stakeholders and waste flow analysis served as methodological tools to assess the current solid waste management (SWM) system of Nosy Be. Stakeholder mapping and involvement as well as first exchange among local and international actors provided the basis to identify key practice and opportunities. Research findings highlight the importance of active participation and involvement of local partners supported by international experts, to suggest how touristic centres can serve as core of circular approaches. The article presents potential circular models to be implemented in Nosy Be, taking tourism as the entry point including the aspects of financial support, separated waste flows and the interest in 'green tourism marketing'. This case study underlines how international cooperation, touristic activities and common efforts can potentially help low-income communities improve their SWM practices.
Collapse
Affiliation(s)
- Navarro Ferronato
- Department of Theoretical and Applied Sciences, University of Insubria, Varese, Italy
| | - Adeline Mertenat
- Department of Sanitation, Water and Solid Waste for Development (Sandec), Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Christian Zurbrügg
- Department of Sanitation, Water and Solid Waste for Development (Sandec), Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Vincenzo Torretta
- Department of Theoretical and Applied Sciences, University of Insubria, Varese, Italy
| |
Collapse
|
2
|
Policastro G, Cesaro A, Fabbricino M. Valorization of Purple Phototrophic Bacteria Biomass Resulting from Photo Fermentation Aimed at Biohydrogen Production. Molecules 2024; 29:1679. [PMID: 38611957 PMCID: PMC11013808 DOI: 10.3390/molecules29071679] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 04/03/2024] [Accepted: 04/04/2024] [Indexed: 04/14/2024] Open
Abstract
This study evaluated the feasibility of contextually producing hydrogen, microbial proteins, and polyhydroxybutyrate (PHB) using a mixed culture of purple phototrophic bacteria biomass under photo fermentative conditions. To this end, three consecutive batch tests were conducted to analyze the biomass growth curve and to explore the potential for optimizing the production process. Experimental findings indicated that inoculating reactors with microorganisms from the exponential growth phase reduced the duration of the process. Furthermore, the most effective approach for simultaneous hydrogen production and the valorization of microbial biomass was found when conducting the process during the exponential growth phase of the biomass. At this stage, achieved after 3 days of fermentation, the productivities of hydrogen, PHB, and microbial proteins were measured at 63.63 L/m3 d, 0.049 kg/m3 d, and 0.045 kg/m3 d, respectively. The biomass composition comprised a total intracellular compound percentage of 56%, with 27% representing PHB and 29% representing proteins. Under these conditions, the estimated daily revenue was maximized, amounting to 0.6 $/m3 d.
Collapse
Affiliation(s)
- Grazia Policastro
- Department of Engineering, Telematic University Pegaso, 80143 Naples, Italy;
| | - Alessandra Cesaro
- Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, 80125 Naples, Italy;
| | - Massimiliano Fabbricino
- Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, 80125 Naples, Italy;
| |
Collapse
|
3
|
Nativio A, Jovanovic O, Kapelan Z, van der Hoek JP. Human health risk assessment framework for new water resource recovery-based bio-composite materials. J Water Health 2024; 22:652-672. [PMID: 38678420 DOI: 10.2166/wh.2024.168] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 02/12/2024] [Indexed: 04/30/2024]
Abstract
A new type of bio-composite material is being produced from water-recovered resources such as cellulose fibres from wastewater, calcite from the drinking water softening process, and grass and reed from waterboard sites. These raw materials may be contaminated with pathogens and chemicals such as Escherichia coli, heavy metals, and resin compounds. A novel risk assessment framework is proposed here, addressing human health risks during the production of new bio-composite materials. The developed framework consists of a combination of existing risk assessment methods and is based on three main steps: hazard identification, qualitative risk mapping, and quantitative risk assessment. The HAZOP and Event Tree Analysis methodologies were used for hazard identification and risk mapping stages. Then, human health risks were quantitatively assessed using quantitative chemical risk assessment, evaluating cancer and non-cancer risk, and quantitative microbial risk assessment. The deterministic and the stochastic approaches were performed for this purpose. The contamination of raw materials may pose human health concerns, resulting in cancer risk above the threshold. Microbial risk is also above the safety threshold. Additional analysis would be significant as future research to better assess the microbial risk in biocomposite production. The framework has been effectively used for chemical and microbial risk assessment.
Collapse
Affiliation(s)
- Arianna Nativio
- Department of Water Management, Delft University of Technology, Stevinweg 1,2628 CN Delft, The Netherlands E-mail:
| | - Oriana Jovanovic
- Department of Water Management, Delft University of Technology, Stevinweg 1,2628 CN Delft, The Netherlands
| | - Zoran Kapelan
- Department of Water Management, Delft University of Technology, Stevinweg 1,2628 CN Delft, The Netherlands
| | - Jan Peter van der Hoek
- Department of Water Management, Delft University of Technology, Stevinweg 1,2628 CN Delft, The Netherlands; Waternet, Korte Ouderkerkerdijk 7,1096 AC Amsterdam, The Netherlands
| |
Collapse
|
4
|
Hao R, Song Y, Yang L, Guo Y, Wu X, Ma Z, Qian Z, Liu F, Wu Z, Wang L. Electrochemical Reduction of Flue Gas Denitrification Wastewater to Ammonia Using a Dual-Defective Cu 2O@Cu Heterojunction Electrode. Environ Sci Technol 2024; 58:5557-5566. [PMID: 38412381 DOI: 10.1021/acs.est.3c09811] [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] [Indexed: 02/29/2024]
Abstract
Wet flue gas denitrification offers a new route to convert industrial nitrogen oxides (NOx) into highly concentrated nitrate wastewater, from which the nitrogen resource can be recovered to ammonia (NH3) via electrochemical nitrate reduction reactions (NITRRs). Low-cost, scalable, and efficient cathodic materials need to be developed to enhance the NH3 production rate. Here, in situ electrodeposition was adopted to fabricate a foamy Cu-based heterojunction electrode containing both Cu-defects and oxygen vacancy loaded Cu2O (OVs-Cu2O), which achieved an NH3 yield rate of 3.59 mmol h-1 cm-2, NH3 Faradaic efficiency of 99.5%, and NH3 selectivity of 100%. Characterizations and theoretical calculations unveiled that the Cu-defects and OVs-Cu2O heterojunction boosted the H* yield, suppressed the hydrogen evolution reaction (HER), and served as dual reaction sites to coherently match the tandem reactions kinetics of NO3-to-NO2 and NO2-to-NH3. An integrated system was further built to combine wet flue gas denitrification and desulfurization, simultaneously converting NO and SO2 to produce the (NH4)2SO4 fertilizer. This study offers new insights into the application of low-cost Cu-based cathode for electrochemically driven wet denitrification wastewater valorization.
Collapse
Affiliation(s)
- Runlong Hao
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, PR China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
| | - Yunchang Song
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, PR China
| | - Longlong Yang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, PR China
| | - Yongxue Guo
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, PR China
| | - Xuanhao Wu
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, PR China
| | - Zhao Ma
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, PR China
| | - Zhen Qian
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, PR China
| | - Feng Liu
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, PR China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
| | - Zhongbiao Wu
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, PR China
| | - Lidong Wang
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
| |
Collapse
|
5
|
Kogler A, Sharma N, Tiburcio D, Gong M, Miller DM, Williams KS, Chen X, Tarpeh WA. Long-Term Robustness and Failure Mechanisms of Electrochemical Stripping for Wastewater Ammonia Recovery. ACS Environ Au 2024; 4:89-105. [PMID: 38525023 PMCID: PMC10958661 DOI: 10.1021/acsenvironau.3c00058] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 12/14/2023] [Accepted: 12/22/2023] [Indexed: 03/26/2024]
Abstract
Nitrogen in wastewater has negative environmental, human health, and economic impacts but can be recovered to reduce the costs and environmental impacts of wastewater treatment and chemical production. To recover ammonia/ammonium (total ammonia nitrogen, TAN) from urine, we operated electrochemical stripping (ECS) for over a month, achieving 83.4 ± 1.5% TAN removal and 73.0 ± 2.9% TAN recovery. With two reactors, we recovered sixteen 500-mL batches (8 L total) of ammonium sulfate (20.9 g/L TAN) approaching commercial fertilizer concentrations (28.4 g/L TAN) and often having >95% purity. While evaluating the operation and maintenance needs, we identified pH, full-cell voltage, product volume, and water flux into the product as informative process monitoring parameters that can be inexpensively and rapidly measured. Characterization of fouled cation exchange and omniphobic membranes informs cleaning and reactor modifications to reduce fouling with organics and calcium/magnesium salts. To evaluate the impact of urine collection and storage on ECS, we conducted experiments with urine at different levels of dilution with flush water, extents of divalent cation precipitation, and degrees of hydrolysis. ECS effectively treated urine under all conditions, but minimizing flush water and ensuring storage until complete hydrolysis would enable energy-efficient TAN recovery. Our experimental results and cost analysis motivate a multifaceted approach to improving ECS's technical and economic viability by extending component lifetimes, decreasing component costs, and reducing energy consumption through material, reactor, and process engineering. In summary, we demonstrated urine treatment as a foothold for electrochemical nutrient recovery from wastewater while supporting the applicability of ECS to seven other wastewaters with widely varying characteristics. Our findings will facilitate the scale-up and deployment of electrochemical nutrient recovery technologies, enabling a circular nitrogen economy that fosters sanitation provision, efficient chemical production, and water resource protection.
Collapse
Affiliation(s)
- Anna Kogler
- Department
of Civil and Environmental Engineering, Stanford University, Stanford, California 94305, United States
| | - Neha Sharma
- Stanford
Synchrotron Radiation Lightsource, SLAC
National Accelerator Laboratory, Menlo Park, California 94205, United States
- Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Room 387, Stanford, California 94305, United States
| | - Diana Tiburcio
- Department
of Mechanical Engineering, Temple University, Philadelphia, Pennsylvania 19122, United States
| | - Meili Gong
- Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Room 387, Stanford, California 94305, United States
| | - Dean M. Miller
- Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Room 387, Stanford, California 94305, United States
| | - Kindle S. Williams
- Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Room 387, Stanford, California 94305, United States
| | - Xi Chen
- Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Room 387, Stanford, California 94305, United States
| | - William A. Tarpeh
- Department
of Chemical Engineering, Stanford University, 443 Via Ortega, Room 387, Stanford, California 94305, United States
| |
Collapse
|
6
|
Sravan JS, Matsakas L, Sarkar O. Advances in Biological Wastewater Treatment Processes: Focus on Low-Carbon Energy and Resource Recovery in Biorefinery Context. Bioengineering (Basel) 2024; 11:281. [PMID: 38534555 DOI: 10.3390/bioengineering11030281] [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: 02/02/2024] [Revised: 02/29/2024] [Accepted: 03/12/2024] [Indexed: 03/28/2024] Open
Abstract
Advancements in biological wastewater treatment with sustainable and circularity approaches have a wide scope of application. Biological wastewater treatment is widely used to remove/recover organic pollutants and nutrients from a diverse wastewater spectrum. However, conventional biological processes face challenges, such as low efficiency, high energy consumption, and the generation of excess sludge. To overcome these limitations, integrated strategies that combine biological treatment with other physical, chemical, or biological methods have been developed and applied in recent years. This review emphasizes the recent advances in integrated strategies for biological wastewater treatment, focusing on their mechanisms, benefits, challenges, and prospects. The review also discusses the potential applications of integrated strategies for diverse wastewater treatment towards green energy and resource recovery, along with low-carbon fuel production. Biological treatment methods, viz., bioremediation, electro-coagulation, electro-flocculation, electro-Fenton, advanced oxidation, electro-oxidation, bioelectrochemical systems, and photo-remediation, are summarized with respect to non-genetically modified metabolic reactions. Different conducting materials (CMs) play a significant role in mass/charge transfer metabolic processes and aid in enhancing fermentation rates. Carbon, metal, and nano-based CMs hybridization in different processes provide favorable conditions to the fermentative biocatalyst and trigger their activity towards overcoming the limitations of the conventional process. The emerging field of nanotechnology provides novel additional opportunities to surmount the constraints of conventional process for enhanced waste remediation and resource valorization. Holistically, integrated strategies are promising alternatives for improving the efficiency and effectiveness of biological wastewater treatment while also contributing to the circular economy and environmental protection.
Collapse
Affiliation(s)
- J Shanthi Sravan
- Research Center for Innovative Energy and Carbon Optimized Synthesis for Chemicals (Inn-ECOSysChem), Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Leonidas Matsakas
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, 971-87 Luleå, Sweden
| | - Omprakash Sarkar
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, 971-87 Luleå, Sweden
| |
Collapse
|
7
|
Chen LM, Erol Ö, Choi YH, Pronk M, van Loosdrecht M, Lin Y. The water-soluble fraction of extracellular polymeric substances from a resource recovery demonstration plant: characterization and potential application as an adhesive. Front Microbiol 2024; 15:1331120. [PMID: 38468850 PMCID: PMC10925790 DOI: 10.3389/fmicb.2024.1331120] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 02/07/2024] [Indexed: 03/13/2024] Open
Abstract
Currently, there is a growing interest in transforming wastewater treatment plants (WWTPs) into resource recovery plants. Microorganisms in aerobic granular sludge produce extracellular polymeric substances (EPS), which are considered sustainable resources to be extracted and can be used in diverse applications. Exploring applications in other high-value materials, such as adhesives, will not only enhance the valorization potential of the EPS but also promote resource recovery. This study aimed to characterize a water-soluble fraction extracted from the EPS collected at the demonstration plant in the Netherlands based on its chemical composition (amino acids, sugar, and fatty acids) and propose a proof-of-concept for its use as an adhesive. This fraction comprises a mixture of biomolecules, such as proteins (26.6 ± 0.3%), sugars (21.8 ± 0.2%), and fatty acids (0.9%). The water-soluble fraction exhibited shear strength reaching 36-51 kPa across a pH range of 2-10 without additional chemical treatment, suggesting a potential application as an adhesive. The findings from this study provide insights into the concept of resource recovery and the valorization of excess sludge at WWTPs.
Collapse
Affiliation(s)
- Le Min Chen
- Department of Biotechnology, Delft University of Technology, Delft, Netherlands
| | - Özlem Erol
- Natural Products Laboratory, Institute of Biology, Leiden University, Leiden, Netherlands
| | - Young Hae Choi
- Natural Products Laboratory, Institute of Biology, Leiden University, Leiden, Netherlands
| | - Mario Pronk
- Department of Biotechnology, Delft University of Technology, Delft, Netherlands
- Royal HaskoningDHV, Amersfoort, Netherlands
| | - Mark van Loosdrecht
- Department of Biotechnology, Delft University of Technology, Delft, Netherlands
| | - Yuemei Lin
- Department of Biotechnology, Delft University of Technology, Delft, Netherlands
| |
Collapse
|
8
|
Ran W, Zhao H, Zhang X, Li S, Sun JF, Liu J, Liu R, Jiang G. Critical Review of Pd-Catalyzed Reduction Process for Treatment of Waterborne Pollutants. Environ Sci Technol 2024. [PMID: 38323894 DOI: 10.1021/acs.est.3c09198] [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] [Indexed: 02/08/2024]
Abstract
Catalyzed reduction processes have been recognized as important and supplementary technologies for water treatment, with the specific aims of resource recovery, enhancement of bio/chemical-treatability of persistent organic pollutants, and safe handling of oxygenate ions. Palladium (Pd) has been widely used as a catalyst/electrocatalyst in these reduction processes. However, due to the limited reserves and high cost of Pd, it is essential to gain a better understanding of the Pd-catalyzed decontamination process to design affordable and sustainable Pd catalysts. This review provides a systematic summary of recent advances in understanding Pd-catalyzed reductive decontamination processes and designing Pd-based nanocatalysts for the reductive treatment of water-borne pollutants, with special focus on the interactions and transformation mechanisms of pollutant molecules on Pd catalysts at the atomic scale. The discussion begins by examining the adsorption of pollutants onto Pd sites from a thermodynamic viewpoint. This is followed by an explanation of the molecular-level reaction mechanism, demonstrating how electron-donors participate in the reductive transformation of pollutants. Next, the influence of the Pd reactive site structure on catalytic performance is explored. Additionally, the process of Pd-catalyzed reduction in facilitating the oxidation of pollutants is briefly discussed. The longevity of Pd catalysts, a crucial factor in determining their practicality, is also examined. Finally, we argue for increased attention to mechanism study, as well as precise construction of Pd sites under batch synthesis conditions, and the use of Pd-based catalysts/electrocatalysts in the treatment of concentrated pollutants to facilitate resource recovery.
Collapse
Affiliation(s)
- Wei Ran
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huachao Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoling Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shiwei Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jie-Fang Sun
- Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Jingfu Liu
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
9
|
Feng J, Li Y, Strathmann TJ, Guest JS. Characterizing the Opportunity Space for Sustainable Hydrothermal Valorization of Wet Organic Wastes. Environ Sci Technol 2024; 58:2528-2541. [PMID: 38266239 PMCID: PMC10851424 DOI: 10.1021/acs.est.3c07394] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/18/2023] [Accepted: 12/26/2023] [Indexed: 01/26/2024]
Abstract
Resource recovery from wet organic wastes can support circular economies by creating financial incentives to produce renewable energy and return nutrients to agriculture. In this study, we characterize the potential for hydrothermal liquefaction (HTL)-based resource recovery systems to advance the economic and environmental sustainability of wastewater sludge, FOG (fats, oils, and grease), food waste, green waste, and animal manure management through the production of liquid biofuels (naphtha, diesel), fertilizers (struvite, ammonium sulfate), and power (heat, electricity). From the waste management perspective, median costs range from -193 $·tonne-1 (FOG) to 251 $·tonne-1 (green waste), and median carbon intensities range from 367 kg CO2 eq·tonne-1 (wastewater sludge) to 769 kg CO2 eq·tonne-1 (green waste). From the fuel production perspective, the minimum selling price of renewable diesel blendstocks are within the commercial diesel price range (2.37 to 5.81 $·gal-1) and have a lower carbon intensity than petroleum diesel (101 kg CO2 eq·MMBTU-1). Finally, through uncertainty analysis and Monte Carlo filtering, we set specific targets (i.e., achieve wastewater sludge-to-biocrude yield >0.440) for the future development of hydrothermal waste management system components. Overall, our work demonstrates the potential of HTL-based resource recovery systems to reduce the costs and carbon intensity of resource-rich organic wastes.
Collapse
Affiliation(s)
- Jianan Feng
- Department
of Civil and Environmental Engineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Yalin Li
- Department
of Civil and Environmental Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Timothy J. Strathmann
- Department
of Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Jeremy S. Guest
- Department
of Civil and Environmental Engineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
- Institute
for Sustainability, Energy, and Environment, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| |
Collapse
|
10
|
Gallipoli A, Angelini F, Angelini S, Braguglia CM, Montecchio D, Tonanzi B, Gianico A. Thermally enhanced solid-liquid separation process in food waste biorefinery: modelling the anaerobic digestion of solid residues. Front Bioeng Biotechnol 2024; 12:1343396. [PMID: 38371422 PMCID: PMC10869513 DOI: 10.3389/fbioe.2024.1343396] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 01/18/2024] [Indexed: 02/20/2024] Open
Abstract
The biochemical valorization potential of food waste (FW) could be exploited by extracting decreasing added-value bio-based products and converting the final residues into energy. In this context, multi-purpose and versatile schemes integrating thermal and biochemical conversion processes will play a key role. An upstream thermal pretreatment + solid-liquid separation unit was here proposed to optimize the conversion of the liquid fraction of FW into valuable chemicals through semi-continuous fermentation process, and the conversion of the residual solid fraction into biomethane through anaerobic digestion. The solid residues obtained after thermal pretreatment presented a higher soluble COD fraction, which resulted in higher methane production with respect to the raw residues (0.33 vs. 0.29 Nm3CH4 kg-1VSfed) and higher risk of acidification and failure of methanogenesis when operating at lower HRT (20d). On the contrary, at HRT = 40 d, the pretreatment did not affect the methane conversion rates and both tests evidenced similar methane productions of 0.33 Nm3CH4 kg-1VSfed. In the reactor fed with pretreated residue, the association of hydrogenotrophic methanogens with syntrophic bacteria prevented the acidification of the system. Modelling proved the eligibility of the FW solid residues as substrates for anaerobic digestion, given their small inert fractions that ranged between 0% and 30% of the total COD content.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Andrea Gianico
- National Research Council of Italy, Water Research Institute, CNR-IRSA, Rome, Italy
| |
Collapse
|
11
|
Brunner PH, Morf LS. Waste to energy, indispensable cornerstone for circular economy: A mini-review. Waste Manag Res 2024:734242X241227376. [PMID: 38282576 DOI: 10.1177/0734242x241227376] [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] [Indexed: 01/30/2024]
Abstract
This mini-review aims at proving that waste-to-energy (WtE) is an essential cornerstone for circular economy (CE). Based on literature, the history of thermal waste treatment over the last 150 years is investigated, from open burning to WtE with resource recovery and final sink function. The results show that in the past incineration solved the issues it was designed for but often created new and sometimes even worse problems: The introduction of incineration in the 19th century improved urban sanitation, decreased waste volume and prolonged operational life of landfills. But it also polluted the environment, triggering an unprecedented scientific and engineering effort of all stakeholders. Today, WtE is one of the best investigated and optimized technologies in waste management. It enables the recovery of energy as heat and electric power and facilitates the 'cleaning' of cycles by the destruction of hazardous organic substances. Recent developments in resource recovery from WtE residues allow to recycle metals and, in the case of sewage sludge, even phosphorus by thermal recycling. Combined with carbon capture and storage technology, WtE stands for a quantifiable contribution to greenhouse gas reduction. Today, WtE is indispensable to reach the goals of CE, namely recycling of energy and materials, supplying safe final sinks for persistent organic substances and minimizing the need for sinks for hazardous inorganic substances.
Collapse
Affiliation(s)
- Paul H Brunner
- TU Wien, Institute of Water Quality and Resource Management, Vienna, Austria
| | - Leo S Morf
- Baudirektion Kanton Zürich, Amt für Abfall, Wasser, Energie und Luft, Zürich, Switzerland
| |
Collapse
|
12
|
Huang Y, Afolabi MA, Gan L, Liu S, Chen Y. MXene-Coated Ion-Selective Electrode Sensors for Highly Stable and Selective Lithium Dynamics Monitoring. Environ Sci Technol 2024; 58:1359-1368. [PMID: 38079615 PMCID: PMC10795166 DOI: 10.1021/acs.est.3c06235] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 01/17/2024]
Abstract
Lithium holds immense significance in propelling sustainable energy and environmental systems forward. However, existing sensors used for lithium monitoring encounter issues concerning their selectivity and long-term durability. Addressing these challenges is crucial to ensure accurate and reliable lithium measurements during the lithium recovery processes. In response to these concerns, this study proposes a novel approach involving the use of an MXene composite membrane with incorporated poly(sodium 4-styrenesulfonate) (PSS) as an antibiofouling layer on the Li+ ion selective electrode (ISE) sensors. The resulting MXene-PSS Li+ ISE sensor demonstrates exceptional electrochemical performance, showcasing a superior slope (59.42 mV/dec), lower detection limit (10-7.2 M), quicker response time (∼10 s), higher selectivity to Na+ (-2.37) and K+ (-2.54), and reduced impedance (106.9 kΩ) when compared to conventional Li+ ISE sensors. These improvements are attributed to the unique electronic conductivity and layered structure of the MXene-PSS nanosheet coating layer. In addition, the study exhibits the long-term accuracy and durability of the MXene-PSS Li+ ISE sensor by subjecting it to real wastewater testing for 14 days, resulting in sensor reading errors of less than 10% when compared to laboratory validation results. This research highlights the great potential of MXene nanosheet coatings in advancing sensor technology, particularly in challenging applications, such as detecting emerging contaminants and developing implantable biosensors. The findings offer promising prospects for future advancements in sensor technology, particularly in the context of sustainable energy and environmental monitoring.
Collapse
Affiliation(s)
| | | | - Lan Gan
- School of Civil and Environmental
Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Su Liu
- School of Civil and Environmental
Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Yongsheng Chen
- School of Civil and Environmental
Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| |
Collapse
|
13
|
Gu Z, Ni N, He G, Shan Y, Wu K, Hu C, Qu J. Enhanced Hydrosaturation Selectivity and Electron Transfer for Electrocatalytic Chlorophenols Hydrogenation on Ru Sites. Environ Sci Technol 2023; 57:16695-16706. [PMID: 37844151 DOI: 10.1021/acs.est.3c06669] [Citation(s) in RCA: 1] [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: 10/18/2023]
Abstract
Electrocatalytic hydrogenation is acknowledged as a promising strategy for chlorophenol dechlorination. However, the widely used Pd catalysts exhibit drawbacks, such as high costs and low selectivity for phenol hydrosaturation. Herein, we demonstrate the potential and mechanism of Ru in serving as a Pd substitute using 2,4,6-trichlorophenol (TCP) as a model pollutant. Up to 99.8% TCP removal efficiency and 99% selectivity to cyclohexanol, a value-added compound with an extremely low toxicity, were achieved on the Ru electrode. In contrast, only 66% of TCP was removed on the Pd electrode, with almost no hydrosaturation selectivity. The superiority of Ru over Pd was especially noteworthy in alkaline conditions or the presence of interfering species such as S2-. The theoretical simulation demonstrates that Ru possesses a hydrodechlorination energy barrier of 0.72 eV, which is comparable to that on Pd. Meanwhile, hydrosaturation requires an activation energy of 0.69 eV on Ru, which is much lower than that on Pd (0.92 eV). The main reaction mechanism on Ru is direct electron transfer, which is distinct from that on Pd (indirect pathway via atomic hydrogen, H*). This work thereby provides new insights into designing cost-effective electrocatalysts for halogenated phenol detoxification and resource recovery.
Collapse
Affiliation(s)
- Zhenao Gu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, Beijing 100085, China
| | - Nan Ni
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Guangzhi He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yulong Shan
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Kun Wu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Chengzhi Hu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, Beijing 100085, China
| | - Jiuhui Qu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
14
|
Wang GH, Huang CT, Huang HJ, Tang CH, Chung YC. Biological Activities of Citrus aurantium Leaf Extract by Optimized Ultrasound-Assisted Extraction. Molecules 2023; 28:7251. [PMID: 37959671 PMCID: PMC10649195 DOI: 10.3390/molecules28217251] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/17/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
Several studies have explored the biological activities of Citrus aurantium flowers, fruits, and seeds, but the bioactivity of C. aurantium leaves, which are treated as waste, remains unclear. Thus, this study developed a pilot-scale ultrasonic-assisted extraction process using the Box-Behnken design (BBD) for the optimized extraction of active compounds from C. aurantium leaves, and their antityrosinase, antioxidant, antiaging, and antimicrobial activities were evaluated. Under optimal conditions in a 150× scaleup configuration (a 30 L ultrasonic machine) of a pilot plant, the total phenolic content was 69.09 mg gallic acid equivalent/g dry weight, which was slightly lower (3.17%) than the theoretical value. The half maximal inhibitory concentration of C. aurantium leaf extract (CALE) for 2,2-diphenyl-1-picrylhydrazyl-scavenging, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)-scavenging, antityrosinase, anticollagenase, antielastase and anti-matrix metalloprotein-1 activities were 123.5, 58.5, 181.3, 196.4, 216.3, and 326.4 mg/L, respectively. Moreover, the minimal inhibitory concentrations for bacteria and fungi were 150-350 and 500 mg/L, respectively. In total, 17 active compounds were detected in CALE-with linalool, linalyl acetate, limonene, and α-terpineol having the highest concentrations. Finally, the overall transdermal absorption and permeation efficiency of CALE was 95.9%. In conclusion, our CALE demonstrated potential whitening, antioxidant, antiaging, and antimicrobial activities; it was also nontoxic and easily absorbed into the skin as well as inexpensive to produce. Therefore, it has potential applications in various industries.
Collapse
Affiliation(s)
- Guey-Horng Wang
- Research Center of Natural Cosmeceuticals Engineering, Xiamen Medical College, Xiamen 361008, China
| | - Chun-Ta Huang
- Department of Biological Science and Technology, China University of Science and Technology, Taipei City 115311, Taiwan (C.-H.T.)
| | - Hsiu-Ju Huang
- Department of Biological Science and Technology, China University of Science and Technology, Taipei City 115311, Taiwan (C.-H.T.)
| | - Chi-Hsiang Tang
- Department of Biological Science and Technology, China University of Science and Technology, Taipei City 115311, Taiwan (C.-H.T.)
| | - Ying-Chien Chung
- Department of Biological Science and Technology, China University of Science and Technology, Taipei City 115311, Taiwan (C.-H.T.)
| |
Collapse
|
15
|
Yasuda S, Terada A. Complete genome sequence of Marinobacter shengliensis D49 harboring ectABC genes for ectoine synthesis. Microbiol Resour Announc 2023; 12:e0041423. [PMID: 37732797 PMCID: PMC10586147 DOI: 10.1128/mra.00414-23] [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: 05/16/2023] [Accepted: 08/11/2023] [Indexed: 09/22/2023] Open
Abstract
A complete genome sequence of Marinobacter shengliensis D49 in the class Gamma-proteobacteria was isolated from activated sludge treating landfill leachate. The genome encodes the functional genes for the biosynthesis of ectoine (ectABC), a compatible solute for cosmetics. Deciphering the genome helps pave the way for ectoine production by the isolate.
Collapse
Affiliation(s)
- Shohei Yasuda
- Department of Applied Physics and Chemical Engineering, Tokyo University of Agriculture and Technology, Naka-Cho, Koganei, Tokyo, Japan
- Global Innovation Research Institute, Tokyo University of Agriculture and Technology, Harumi-Cho, Fuchu, Tokyo, Japan
| | - Akihiko Terada
- Department of Applied Physics and Chemical Engineering, Tokyo University of Agriculture and Technology, Naka-Cho, Koganei, Tokyo, Japan
- Global Innovation Research Institute, Tokyo University of Agriculture and Technology, Harumi-Cho, Fuchu, Tokyo, Japan
| |
Collapse
|
16
|
Chacon-Aparicio S, Villamil JA, Martinez F, Melero JA, Molina R, Puyol D. Achieving Discharge Limits in Single-Stage Domestic Wastewater Treatment by Combining Urban Waste Sources and Phototrophic Mixed Cultures. Microorganisms 2023; 11:2324. [PMID: 37764168 PMCID: PMC10536668 DOI: 10.3390/microorganisms11092324] [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: 07/28/2023] [Revised: 09/09/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
This work shows the potential of a new way of co-treatment of domestic wastewater (DWW) and a liquid stream coming from the thermal hydrolysis of the organic fraction of municipal solid waste (OFMSW) mediated by a mixed culture of purple phototrophic bacteria (PPB) capable of assimilating carbon and nutrients from the medium. The biological system is an open single-step process operated under microaerophilic conditions at an oxidative reduction potential (ORP) < 0 mV with a photoperiod of 12/24 h and fed during the light stage only so the results can be extrapolated to outdoor open pond operations by monitoring the ORP. The effluent mostly complies with the discharge values of the Spanish legislation in COD and p-values (<125 mg/L; <2 mg/L), respectively, and punctually on values in N (<15 mg/L). Applying an HRT of 3 d and a ratio of 100:7 (COD:N), the presence of PPB in the mixed culture surpassed 50% of 16S rRNA gene copies, removing 78% of COD, 53% of N, and 66% of P. Furthermore, by increasing the HRT to 5 d, removal efficiencies of 83% of COD, 65% of N, and 91% of P were achieved. In addition, the reactors were further operated in a membrane bioreactor, thus separating the HRT from the SRT to increase the specific loading rate. Very satisfactory removal efficiencies were achieved by applying an HRT and SRT of 2.3 and 3 d, respectively: 84% of COD, 49% of N, and 93% of P despite the low presence of PPB due to more oxidative conditions, which step-by-step re-colonized the mixed culture until reaching >20% of 16S rRNA gene copies after 49 d of operation. These results open the door to scaling up the process in open photobioreactors capable of treating urban wastewater and municipal solid waste in a single stage and under microaerophilic conditions by controlling the ORP of the system.
Collapse
Affiliation(s)
| | | | | | | | | | - Daniel Puyol
- Chemical and Environmental Engineering Group, University Rey Juan Carlos, 28933 Madrid, Spain; (S.C.-A.); (F.M.); (J.A.M.); (R.M.)
| |
Collapse
|
17
|
Yang Z, Li D, Yang K, Chen L, Wang J, Zhu X, Chen B. Optimized Water Supply in a Solar Evaporator for Simultaneous Freshwater Production and Salt Recycle. Environ Sci Technol 2023; 57:13047-13055. [PMID: 37607016 DOI: 10.1021/acs.est.3c03457] [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] [Indexed: 08/23/2023]
Abstract
Solar desalination has shown great potential in alleviating global water scarcity. However, the trade-off between energy efficiency and salt rejection remains a challenge, restricting its practical applications. In this study, we report a three-dimensional nitrocellulose membrane-based evaporator featuring a high evaporation rate (1.5 kg m-2 h-1) and efficient salt precipitation at the edges. Additionally, the salt is isolated from the photothermal area of the evaporator and falls automatically with a salt recovery rate of 97 g m-2 h-1 in brine with 10 wt % salt content. The distinctive performance is attributed to the precise water supply control, which was adjusted by changing the resistance force and driven force in the evaporator. With a high evaporation rate, stable performance, and specific salt recovery ability, this solar evaporation structure holds great potential in water desalination and resource recovery.
Collapse
Affiliation(s)
- Zhi Yang
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Dawei Li
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Kaijie Yang
- Advanced Membranes and Porous Materials (AMPM) Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Lei Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Jian Wang
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Xiaoying Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| |
Collapse
|
18
|
Kazi OA, Chen W, Eatman JG, Gao F, Liu Y, Wang Y, Xia Z, Darling SB. Material Design Strategies for Recovery of Critical Resources from Water. Adv Mater 2023; 35:e2300913. [PMID: 37000538 DOI: 10.1002/adma.202300913] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/22/2023] [Indexed: 06/19/2023]
Abstract
Population growth, urbanization, and decarbonization efforts are collectively straining the supply of limited resources that are necessary to produce batteries, electronics, chemicals, fertilizers, and other important products. Securing the supply chains of these critical resources via the development of separation technologies for their recovery represents a major global challenge to ensure stability and security. Surface water, groundwater, and wastewater are emerging as potential new sources to bolster these supply chains. Recently, a variety of material-based technologies have been developed and employed for separations and resource recovery in water. Judicious selection and design of these materials to tune their properties for targeting specific solutes is central to realizing the potential of water as a source for critical resources. Here, the materials that are developed for membranes, sorbents, catalysts, electrodes, and interfacial solar steam generators that demonstrate promise for applications in critical resource recovery are reviewed. In addition, a critical perspective is offered on the grand challenges and key research directions that need to be addressed to improve their practical viability.
Collapse
Affiliation(s)
- Omar A Kazi
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - Wen Chen
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - Jamila G Eatman
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - Feng Gao
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Yining Liu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - Yuqin Wang
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - Zijing Xia
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - Seth B Darling
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| |
Collapse
|
19
|
Nadeem K, Shahzad S, Hassan A, Usman Younus M, Asad Ali Gillani S, Farhan K. Municipal solid waste generation and its compositional assessment for efficient and sustainable infrastructure planning in an intermediate city of Pakistan. Environ Technol 2023; 44:3196-3214. [PMID: 35302920 DOI: 10.1080/09593330.2022.2054370] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 11/06/2021] [Accepted: 03/10/2022] [Indexed: 06/14/2023]
Abstract
It is imperative to design and operate sustainable solid waste management (SWM) systems in cities based on the results of waste amount and characterization study (WACS). In this work, WACS was conducted and results were used to design an SWM system for an intermediate city of Pakistan. The study revealed that about 110 tons of solid waste per day is generated with a per capita rate of 0.337 kg/day. Around 51.2% of mixed municipal solid waste (MSW) is organic in nature and its non-scientific disposal is resulting in higher greenhouse gas (GHG) emissions. It was also found that more than 80% of valuables are taken away by the informal sector during the transfer of MSW from the generation source to the dumping site. Ultimate analyses showed that the moisture content (MC) and carbon to nitrogen (C:N) ratio were 64.23% and 51.14%, respectively. Proximate analysis revealed that moisture and calorific values were 57 % and 3505 BTU/lb., respectively. Based on these results, a material sorting facility (MSF) was proposed, with an estimated investment cost of US $3.64 million. However, the efficiency of the existing collection system is limited to 32 % only. In order to improve the collection efficiency (>90 %), an additional investment of US $1.638 million was estimated with an operations and maintenance (O&M) cost of US $19.25 per ton. Existing non-scientific MSW disposal practices contribute 32,079.61 CO2e tons/year of GHG emissions. The proposed MSF followed by composting is estimated to reduce GHG emissions by 38% to 19,722.38 CO2e tons/year.
Collapse
Affiliation(s)
- K Nadeem
- Laboratoire de Génie Chimique, CNRS, INPT, UPS, Université de Toulouse, Toulouse, France
| | - S Shahzad
- LMDC, INSA, UPS Génie Civil, Université de Toulouse, Toulouse Cedex, France
| | - A Hassan
- Chemical Engineering Department, MNS University of Engineering and Technology, Multan, Pakistan
| | - M Usman Younus
- Ecole Mathématiques, Informatique, Télécommunications de Toulouse, Université de Toulouse, Toulouse, France
- Department of Computer Science & IT, University of Jhang, Pakistan
| | - S Asad Ali Gillani
- Civil Engineering Department, University of Engineering and Technology, Lahore, Pakistan
| | - K Farhan
- The Urban Unit, Planning & Development Department, Government of the Punjab, Lahore, Pakistan
| |
Collapse
|
20
|
Zhang X, Lei Z, Ge S, Ji B, Zhang B. Editorial: Algae and microalgae-bacteria based technology for sustainable wastewater treatment. Front Microbiol 2023; 14:1263955. [PMID: 37614604 PMCID: PMC10443212 DOI: 10.3389/fmicb.2023.1263955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 08/01/2023] [Indexed: 08/25/2023] Open
Affiliation(s)
- Xiaoyuan Zhang
- Engineering Laboratory of Low-Carbon Unconventional Water Resources Utilization and Water Quality Assurance, College of Environmental Science and Engineering, Nankai University, Tianjin, China
| | - Zhongfang Lei
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
| | - Shijian Ge
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, China
| | - Bin Ji
- Department of Water and Wastewater Engineering, School of Urban Construction, Wuhan University of Science and Technology, Wuhan, China
| | - Bing Zhang
- College of Environment and Ecology, Chongqing University, Chongqing, China
| |
Collapse
|
21
|
Liu Z, Smith SR. Cross-Linked Enzyme Aggregate (CLEA) Preparation from Waste Activated Sludge. Microorganisms 2023; 11:1902. [PMID: 37630462 PMCID: PMC10458447 DOI: 10.3390/microorganisms11081902] [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: 06/05/2023] [Revised: 07/20/2023] [Accepted: 07/24/2023] [Indexed: 08/27/2023] Open
Abstract
Enzymes are used extensively as industrial bio-catalysts in various manufacturing and processing sectors. However, commercial enzymes are expensive in part due to the high cost of the nutrient medium for the biomass culture. Activated sludge (AS) is a waste product of biological wastewater treatment and consists of microbial biomass that degrades organic matter by producing substantial quantities of hydrolytic enzymes. Recovering enzymes from AS therefore offers a potential alternative to conventional production techniques. A carrier-free, cross-linked enzyme aggregate (CLEA) was produced from crude AS enzyme extract for the first time. A major advantage of the CLEA is the combined immobilization, purification, and stabilization of the crude enzymes into a single step, thereby avoiding large amounts of inert carriers in the final enzyme product. The AS CLEA contained a variety of hydrolytic enzymes and demonstrated high potential for the bio-conversion of complex organic substrates.
Collapse
Affiliation(s)
| | - Stephen R. Smith
- Department of Civil and Environmental Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| |
Collapse
|
22
|
Im S, Jung B, Wang X, Wu J, Xiao M, Chen X, Quezada-Renteria JA, Iddya A, Dlamini D, Lu S, Maravelias CT, Ren ZJ, Hoek EMV, Jassby D. High-Efficiency Recovery of Acetic Acid from Water Using Electroactive Gas-Stripping Membranes. Environ Sci Technol 2023. [PMID: 37368842 DOI: 10.1021/acs.est.3c01357] [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] [Indexed: 06/29/2023]
Abstract
Recovery of carbon-based resources from waste is a critical need for achieving carbon neutrality and reducing fossil carbon extraction. We demonstrate a new approach for extracting volatile fatty acids (VFAs) using a multifunctional direct heated and pH swing membrane contactor. The membrane is a multilayer laminate composed of a carbon fiber (CF) bound to a hydrophobic membrane and sealed with a layer of polydimethylsiloxane (PDMS); this CF is used as a resistive heater to provide a thermal driving force for PDMS that, while a highly hydrophobic material, is known for its ability to rapidly pass gases, including water vapor. The transport mechanism for gas transport involves the diffusion of molecules through the free volume of the polymer matrix. CF coated with polyaniline (PANI) is used as an anode to induce an acidic pH swing at the interface between the membrane and water, which can protonate the VFA molecule. The innovative multilayer membrane used in this study has successfully demonstrated a highly efficient recovery of VFAs by simultaneously combining pH swing and joule heating. This novel technique has revealed a new concept in the field of VFA recovery, offering promising prospects for further advancements in this area. The energy consumption was 3.37 kWh/kg for acetic acid (AA), and an excellent separation factor of AA/water of 51.55 ± 2.11 was obtained with high AA fluxes of 51.00 ± 0.82 g.m-2hr-1. The interfacial electrochemical reactions enable the extraction of VFAs without the need for bulk temperature and pH modification.
Collapse
Affiliation(s)
- Sungju Im
- Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
| | - Bongyeon Jung
- Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
| | - Xinyi Wang
- Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
| | - Jishan Wu
- Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
| | - Minhao Xiao
- Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
| | - Xin Chen
- Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
| | - Javier A Quezada-Renteria
- Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
| | - Arpita Iddya
- Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
| | - Derrick Dlamini
- Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
| | - Sidan Lu
- Andlinger Center for Energy and Environment, Princeton University 86 Olden St, Princeton, New Jersey 08540, United States
- Department of Chemical and Biological Engineering, Princeton University 50-70 Olden St, Princeton, New Jersey 08540, United States
- Department of Civil and Environmental Engineering and The Andlinger Center for Energy and the Environment, Princeton University, Princeton, New Jersey 08544, United States
| | - Christos T Maravelias
- Andlinger Center for Energy and Environment, Princeton University 86 Olden St, Princeton, New Jersey 08540, United States
- Department of Chemical and Biological Engineering, Princeton University 50-70 Olden St, Princeton, New Jersey 08540, United States
- Department of Civil and Environmental Engineering and The Andlinger Center for Energy and the Environment, Princeton University, Princeton, New Jersey 08544, United States
| | - Zhiyong Jason Ren
- Andlinger Center for Energy and Environment, Princeton University 86 Olden St, Princeton, New Jersey 08540, United States
- Department of Chemical and Biological Engineering, Princeton University 50-70 Olden St, Princeton, New Jersey 08540, United States
- Department of Civil and Environmental Engineering and The Andlinger Center for Energy and the Environment, Princeton University, Princeton, New Jersey 08544, United States
| | - Eric M V Hoek
- Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
- UCLA California NanoSystems Institute, Los Angeles, California 90095, United States
- UCLA Institute of the Environment & Sustainability, Los Angeles, California 90095, United States
- Lawrence Berkeley National Lab, Energy Systems & Distributed Resources Division, Berkeley, California 94720, United States
| | - David Jassby
- Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
- UCLA California NanoSystems Institute, Los Angeles, California 90095, United States
- UCLA Institute of the Environment & Sustainability, Los Angeles, California 90095, United States
| |
Collapse
|
23
|
Li L, Gao K, Yang M, Zheng Q, Zhang M, Deng X. Challenges and potential solutions of microalgae-based systems for wastewater treatment and resource recovery. Front Bioeng Biotechnol 2023; 11:1210228. [PMID: 37342510 PMCID: PMC10277499 DOI: 10.3389/fbioe.2023.1210228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 05/25/2023] [Indexed: 06/23/2023] Open
Affiliation(s)
- Linqing Li
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Kun Gao
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Mengting Yang
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Qilin Zheng
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Meng Zhang
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Xiangyuan Deng
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Key Laboratory of Ecological Impacts of Hydraulic-Projects and Restoration of Aquatic Ecosystem of Ministry of Water Resources, Institute of Hydroecology, Ministry of Water Resources and Chinese Academy of Sciences, Wuhan, China
| |
Collapse
|
24
|
Areniello M, Matassa S, Esposito G, Lens PNL. Microbial protein production from sulfide-rich biogas through an enrichment of methane- and sulfur-oxidizing bacteria. Bioresour Technol 2023:129237. [PMID: 37244308 DOI: 10.1016/j.biortech.2023.129237] [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: 04/18/2023] [Revised: 05/21/2023] [Accepted: 05/22/2023] [Indexed: 05/29/2023]
Abstract
This study evaluated the possibility of combining methane oxidizing bacteria (MOB) with sulfur oxidizing bacteria (SOB) to enable the utilization of sulfide-rich biogas for microbial protein production. For this purpose, a MOB-SOB mixed-culture enriched by feeding both methane and sulfide was benchmarked against an enrichment of solely MOB. Different CH4:O2 ratios, starting pH values, sulfide levels and nitrogen sources were tested and evaluated for the two enrichments. The MOB-SOB culture gave promising results in terms of both biomass yield (up to 0.07±0.01 g VSS/g CH4-COD) and protein content (up to 73±5% of VSS) at 1500 ppm of equivalent H2S. The latter enrichment was able to grow also under acidic pH (5.8-7.0), but as inhibited outside the optimal CH4:O2 ratio of 2:3. The obtained results show the capability of MOB-SOB mixed-cultures to directly upcycle sulfide-rich biogas into microbial protein potentially suited for feed, food or biobased product applications.
Collapse
Affiliation(s)
- Marica Areniello
- Department of Microbiology and Ryan Institute, School of Natural Sciences, University of Galway, University Road, Galway, H91 TK33, Ireland.
| | - Silvio Matassa
- Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, Via Claudio, Naples, 80125, Italy
| | - Giovanni Esposito
- Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, Via Claudio, Naples, 80125, Italy
| | - Piet N L Lens
- Department of Microbiology and Ryan Institute, School of Natural Sciences, University of Galway, University Road, Galway, H91 TK33, Ireland
| |
Collapse
|
25
|
McNamara P, Liu Z, Tong Y, Santha H, Moss L, Zitomer D. Pyrolysis-A tool in the wastewater solids handling portfolio, not a silver bullet: Benefits, drawbacks, and future directions. Water Environ Res 2023; 95:e10863. [PMID: 37021664 DOI: 10.1002/wer.10863] [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: 12/22/2022] [Revised: 03/28/2023] [Accepted: 03/31/2023] [Indexed: 06/19/2023]
Abstract
Pyrolysis is the process whereby carbonaceous materials, such as biosolids, are heated between 400°C and 900°C in the absence of oxygen. Three main products are generated: a solid product called biochar, a py-liquid that consists of aqueous phase and non-aqueous phase liquid, and py-gas. The biochar holds value as a beneficial soil amendment and sequesters carbon. The py-liquid is potentially hazardous and needs to be dealt with (including potentially reducing it on-site via catalysis or thermal oxidation). Py-gas can be used on-site for energy recovery. Pyrolysis has gained recent interest due to concern over per- and polyfluoroalkyl substances (PFAS) in biosolids. Although pyrolysis can remove PFAS from biosolids, it has been shown to produce PFAS that reside in py-liquid, and the fate in py-gas remains a knowledge gap. More research is needed to help close the PFAS and fluorine mass balance through pyrolysis influent and effluent products because pyrolysis alone does not destroy all PFAS. The moisture content of biosolids substantially affects the energy balance for pyrolysis. Utilities that already produce a dried biosolids product are in a better position to install pyrolysis. Pyrolysis has both defined benefits (solids reduction, PFAS removal from biosolids, and biochar production) as well as remaining questions (the fate of PFAS in py-gas and py-liquid, mass balance on nutrients, and py-liquid handling options) that will be answered through more pilot and full-scale demonstrations. Regulations and local policies (such as carbon sequestration credits) could affect pyrolysis implementation. Pyrolysis should be considered as an option in the biosolids stabilization toolbox with application being based on individual circumstances of a utility (e.g., energy, moisture content of biosolids, PFAS). PRACTITIONER POINTS: Pyrolysis has known benefits but limited full-scale operational data. Pyrolysis removes PFAS from biochar, but PFAS fate in gas phase is unknown. Moisture content of influent feed solids affects energy balance of pyrolysis. Policy on PFAS, carbon sequestration, or renewable energy could impact pyrolysis.
Collapse
Affiliation(s)
- Patrick McNamara
- Water Technology Group, Black & Veatch, Overland Park, Kansas, USA
- Department of Civil, Construction & Environmental Engineering, Marquette University, Milwaukee, Wisconsin, USA
| | - Zhongzhe Liu
- Department of Physics and Engineering, California State University-Bakersfield, 9001 Stockdale Highway, Bakersfield, California, 93311, USA
| | - Yiran Tong
- Stantec, Minneapolis, Minnesota, 55402, USA
| | - Hari Santha
- Water Technology Group, Black & Veatch, Overland Park, Kansas, USA
| | - Lynne Moss
- Water Technology Group, Black & Veatch, Overland Park, Kansas, USA
| | - Daniel Zitomer
- Department of Civil, Construction & Environmental Engineering, Marquette University, Milwaukee, Wisconsin, USA
| |
Collapse
|
26
|
Hu Z, Hu S, Ye L, Duan H, Wu Z, Hong PY, Yuan Z, Zheng M. Novel Use of a Ferric Salt to Enhance Mainstream Nitrogen Removal from Anaerobically Pretreated Wastewater. Environ Sci Technol 2023; 57:6712-6722. [PMID: 37038903 DOI: 10.1021/acs.est.2c08325] [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] [Indexed: 05/03/2023]
Abstract
This study aims to demonstrate a new technology roadmap to support the ongoing paradigm shift in wastewater management from pollutant removal to resource recovery. This is achieved by developing a novel use of an iron salt (i.e., FeCl3) in an integrated anaerobic wastewater treatment and mainstream anammox process. FeCl3 was chosen to be dosed in a proposed sidestream unit rather than in a primary settler or a mainstream reactor. This causes acidification of returned activated sludge and enables stable suppression of nitrite-oxidizing bacterial activity and excess sludge reduction. A laboratory-scale system, which comprised an anaerobic baffled reactor, a continuous-flow anoxic-aerobic (A/O) reactor, and a secondary settler, was designed to treat real domestic wastewater, with the performance of the system comprehensively monitored under a steady-state condition. The experimental assessments showed that the system had good effluent quality, with total nitrogen and phosphorus concentrations of 12.6 ± 1.3 mg N/L and 0.34 ± 0.05 mg P/L, respectively. It efficiently retained phosphorus in excess sludge (0.18 ± 0.03 g P/g dry sludge), suggesting its potential for further recovery. About half of influent organic carbon was recovered in the form of bioenergy (i.e., methane). This together with low energy consumption revealed that the system could produce a net energy of about 0.11 kWh/m3-wastewater, assessed by an energy balance analysis.
Collapse
Affiliation(s)
- Zhetai Hu
- Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Shihu Hu
- Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Liu Ye
- School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia
| | - Haoran Duan
- Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Ziping Wu
- School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia
| | - Pei-Ying Hong
- Environmental Science and Engineering, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Zhiguo Yuan
- Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Min Zheng
- Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St Lucia, QLD 4072, Australia
| |
Collapse
|
27
|
Zhao Z, Wu Y, Ran W, Zhao H, Yu X, Sun JF, He G, Liu J, Liu R, Jiang G. AuFe 3@Pd/γ-Fe 2O 3 Nanosheets as an In Situ Regenerable and Highly Efficient Hydrogenation Catalyst. ACS Nano 2023; 17:8499-8510. [PMID: 37074122 DOI: 10.1021/acsnano.3c00745] [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] [Indexed: 05/03/2023]
Abstract
Heterogenous Pd catalysts play a pivotal role in the chemical industry; however, it is plagued by S2- or other strong adsorbates inducing surface poisoning long term. Herein, we report the development of AuFe3@Pd/γ-Fe2O3 nanosheets (NSs) as an in situ regenerable and highly active hydrogenation catalyst. Upon poisoning, the Pd monolayer sites could be fully and oxidatively regenerated under ambient conditions, which is initiated by •OH radicals from surface defect/FeTetra vacancy-rich γ-Fe2O3 NSs via the Fenton-like pathway. Both experimental and theoretical analyses demonstrate that for the electronic and geometric effect, the 2-3 nm AuFe3 intermetallic nanocluster core promotes the adsorption of reactant onto Pd sites; in addition, it lowers Pd's affinity for •OH radicals to enhance their stability during oxidative regeneration. When packed into a quartz sand fixed-bed catalyst column, the AuFe3@Pd/γ-Fe2O3 NSs are highly active in hydrogenating the carbon-halogen bond, which comprises a crucial step for the removal of micropollutants in drinking water and recovery of resources from heavily polluted wastewater, and withstand ten rounds of regeneration. By maximizing the use of ultrathin metal oxide NSs and intermetallic nanocluster and monolayer Pd, the current study demonstrates a comprehensive strategy for developing sustainable Pd catalysts for liquid catalysis.
Collapse
Affiliation(s)
- Zongshan Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Yanhen Wu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Wei Ran
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
| | - Huachao Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
| | - Xiaotian Yu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
| | - Jie-Fang Sun
- Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Guangzhi He
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
| | - Jingfu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
| | - Rui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
| |
Collapse
|
28
|
DuChanois RM, Mazurowski L, Fan H, Verduzco R, Nir O, Elimelech M. Precise Cation Separations with Composite Cation-Exchange Membranes: Role of Base Layer Properties. Environ Sci Technol 2023; 57:6331-6341. [PMID: 37023347 DOI: 10.1021/acs.est.3c00445] [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] [Indexed: 06/19/2023]
Abstract
Separation of specific ions from water could enable recovery and reuse of essential metals and nutrients, but established membrane technologies lack the high-precision selectivity needed to facilitate a circular resource economy. In this work, we investigate whether the cation/cation selectivity of a composite cation-exchange membrane (CEM), or a thin polymer selective layer on top of a CEM, may be limited by the mass transfer resistance of the underlying CEM. In our analysis, we utilize a layer-by-layer technique to modify CEMs with a thin polymer selective layer (∼50 nm) that has previously shown high selectivity toward copper over similarly sized metals. While these composite membranes have a CuCl2/MgCl2 selectivity up to 33 times larger than unmodified CEMs in diffusion dialysis, our estimates suggest that eliminating resistance from the underlying CEM could further increase selectivity twofold. In contrast, the CEM base layer has a smaller effect on the selectivity of these composite membranes in electrodialysis, although these effects could become more pronounced for ultrathin or highly conductive selective layers. Our results highlight that base layer resistance prevents selectivity factors from being comparable across diffusion dialysis and electrodialysis, and CEMs with low resistance are necessary for providing highly precise separations with composite CEMs.
Collapse
Affiliation(s)
- Ryan M DuChanois
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), 6100 Main Street, MS 6398, Houston, Texas 77005, United States
| | - Lauren Mazurowski
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), 6100 Main Street, MS 6398, Houston, Texas 77005, United States
| | - Hanqing Fan
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
| | - Rafael Verduzco
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), 6100 Main Street, MS 6398, Houston, Texas 77005, United States
- Department of Chemical and Biomolecular Engineering, Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Oded Nir
- Department of Desalination and Water Treatment, Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, Midreshet Ben Gurion 8499000, Israel
| | - Menachem Elimelech
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), 6100 Main Street, MS 6398, Houston, Texas 77005, United States
| |
Collapse
|
29
|
Foo ZH, Rehman D, Bouma AT, Monsalvo S, Lienhard JH. Lithium Concentration from Salt-Lake Brine by Donnan-Enhanced Nanofiltration. Environ Sci Technol 2023; 57:6320-6330. [PMID: 37027336 DOI: 10.1021/acs.est.2c08584] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 06/19/2023]
Abstract
Membranes offer a scalable and cost-effective approach to ion separations for lithium recovery. In the case of salt-lake brines, however, the high feed salinity and low pH of the post-treated feed have an uncertain impact on nanofiltration's selectivity. Here, we adopt experimental and computational approaches to analyze the effect of pH and feed salinity and elucidate key selectivity mechanisms. Our data set comprises over 750 original ion rejection measurements, spanning five salinities and two pH levels, collected using brine solutions that model three salt-lake compositions. Our results demonstrate that the Li+/Mg2+ selectivity of polyamide membranes can be enhanced by 13 times with acid-pretreated feed solutions. This selectivity enhancement is attributed to the amplified Donnan potential from the ionization of carboxyl and amino moieties under low solution pH. As feed salinities increase from 10 to 250 g L-1, the Li+/Mg2+ selectivity decreases by ∼43%, a consequence of weakening exclusion mechanisms. Further, our analysis accentuates the importance of measuring separation factors using representative solution compositions to replicate the ion-transport behaviors with salt-lake brine. Consequently, our results reveal that predictions of ion rejection and Li+/Mg2+ separation factors can be improved by up to 80% when feed solutions with the appropriate Cl-/SO42- molar ratios are used.
Collapse
Affiliation(s)
- Zi Hao Foo
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Center for Computational Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Danyal Rehman
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Center for Computational Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Andrew T Bouma
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Sebastian Monsalvo
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - John H Lienhard
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
30
|
Liu P, Zhao S, Xie N, Yang L, Wang Q, Wen Y, Chen H, Tang Y. Green Approach for Rare Earth Element (REE) Recovery from Coal Fly Ash. Environ Sci Technol 2023; 57:5414-5423. [PMID: 36942728 PMCID: PMC10077585 DOI: 10.1021/acs.est.2c09273] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 03/05/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
Due to the growing demands of rare earth elements (REEs) and the vulnerability of REEs to potential supply disruption, there have been increasing interests in recovering REEs from waste streams such as coal fly ash (CFA). Meanwhile, CFA as a large industrial waste stream in the United States (U.S.) poses significant environmental and economic burdens. Recovery of REEs from CFA is a promising solution to the REE scarcity issue and also brings opportunities for CFA management. This study demonstrates a green system for REE recovery from Class F and C CFA that consists of three modules: REE leaching using citrate, REE separation and concentration using oxalate, and zeolite synthesis using secondary wastes from Modules I and II. In Module I, ∼10 and 60% REEs were leached from the Class F and C CFA samples, respectively, using citrate at pH 4. In Module II, the addition of oxalate selectively precipitated and concentrated REEs from the leachate via the formation of weddellite (CaC2O4·2H2O), while other trace metals remained in solution. In Module III, zeolite was synthesized using wastes from Modules I and II. This study is characterized by the successful recovery of REEs and upcycling of secondary wastes, which addresses both REE recovery and CFA management challenges.
Collapse
Affiliation(s)
- Pan Liu
- School
of Earth and Atmospheric Sciences, Georgia
Institute of Technology, 311 Ferst Dr, Atlanta, Georgia 30332, United States
| | - Simin Zhao
- School
of Earth and Atmospheric Sciences, Georgia
Institute of Technology, 311 Ferst Dr, Atlanta, Georgia 30332, United States
| | - Nan Xie
- School
of Earth and Atmospheric Sciences, Georgia
Institute of Technology, 311 Ferst Dr, Atlanta, Georgia 30332, United States
| | - Lufeng Yang
- Woodruff
School of Mechanical Engineering, Georgia
Institute of Technology, 771 Ferst Dr, Atlanta, Georgia 30332, United States
| | - Qian Wang
- School
of Earth and Atmospheric Sciences, Georgia
Institute of Technology, 311 Ferst Dr, Atlanta, Georgia 30332, United States
| | - Yinghao Wen
- School
of Earth and Atmospheric Sciences, Georgia
Institute of Technology, 311 Ferst Dr, Atlanta, Georgia 30332, United States
| | - Hailong Chen
- Woodruff
School of Mechanical Engineering, Georgia
Institute of Technology, 771 Ferst Dr, Atlanta, Georgia 30332, United States
| | - Yuanzhi Tang
- School
of Earth and Atmospheric Sciences, Georgia
Institute of Technology, 311 Ferst Dr, Atlanta, Georgia 30332, United States
| |
Collapse
|
31
|
Yadav RK, Das S, Patil SA. Are integrated bioelectrochemical technologies feasible for wastewater management? Trends Biotechnol 2023; 41:484-496. [PMID: 36192248 DOI: 10.1016/j.tibtech.2022.09.001] [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: 07/07/2022] [Revised: 08/23/2022] [Accepted: 09/02/2022] [Indexed: 10/14/2022]
Abstract
The need for sustainable technological solutions for wastewater management at different scales has led to the emergence of several promising integrated bioelectrochemical technologies in the past decade. A thorough assessment of these technologies is imperative to understand their practical implementation feasibility and to identify the key challenges to prioritise the research and development work. Our multicriteria-based assessment reveals that the integrated technologies are efficient for wastewater treatment in terms of normalised land footprint [(0.31-1.39 m2/population equivalent (PE))] - and energy consumption (0.18-1.49 kWH/m3) as compared to the conventional biotechnologies, and suggests that they have potential for real-world application. Specifying the boundaries according to their treatment capabilities and scale-up potential besides niche application sites or geographical locations is required to expedite their transition to the real-world wastewater management sector.
Collapse
Affiliation(s)
- Ravi K Yadav
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali (IISER Mohali), Knowledge City, Sector 81, SAS, Nagar, 140306, Punjab, India
| | - Sovik Das
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali (IISER Mohali), Knowledge City, Sector 81, SAS, Nagar, 140306, Punjab, India; Present address: Department of Civil Engineering, Indian Institute of Technology, Delhi, 110016, New Delhi, India
| | - Sunil A Patil
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali (IISER Mohali), Knowledge City, Sector 81, SAS, Nagar, 140306, Punjab, India.
| |
Collapse
|
32
|
Castellani P, Ferronato N, Ragazzi M, Torretta V. Organic waste valorization in remote islands: Analysis of economic and environmental benefits of onsite treatment options. Waste Manag Res 2023; 41:881-893. [PMID: 36301204 PMCID: PMC10108336 DOI: 10.1177/0734242x221126426] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 08/23/2022] [Indexed: 06/16/2023]
Abstract
Solid waste management (SWM) represents an important issue for small islands. This research evaluates the municipal SWM system of the Pelagian archipelago, in Italy. The research aims to evaluate environmental and econoemic benefits of onsite treatment plants for the valorization of the organic fraction of municipal solid waste. The sizing of the anaerobic digestion (AD) and composting plant was developed, and the characteristics of the plant were used to conduct a cost analysis and an environmental life cycle assessment. The current waste management system (S0) has been compared with the new strategy proposed (S1). Results showed that S1 leads to save more than 250,000 € y-1 due to the avoidance of organic waste final disposal and shipping, determining a payback time of about 7 years. Environmental benefits include a lowering of CO2-eq emission of more than 1100 tonnes per year and a reduction of all the six environmental impacts analysed. The outcomes represent a novel contribution to the scientific literature since the research provides the first comparison of quantitative data about environmental and cost benefits of onsite AD plants in small islands. The research underlines that onsite waste treatment systems are viable options to improve SWM systems in isolated regions.
Collapse
Affiliation(s)
- Pietro Castellani
- Department of Theoretical and Applied
Sciences, University of Insubria, Varese, Italy
| | - Navarro Ferronato
- Department of Theoretical and Applied
Sciences, University of Insubria, Varese, Italy
| | - Marco Ragazzi
- Department of Civil, Environmental and
Mechanical Engineering, University of Trento, Trento, Italy
| | - Vincenzo Torretta
- Department of Theoretical and Applied
Sciences, University of Insubria, Varese, Italy
| |
Collapse
|
33
|
de Almeida R, Porto RF, Quintaes BR, Bila DM, Lavagnolo MC, Campos JC. A review on membrane concentrate management from landfill leachate treatment plants: The relevance of resource recovery to close the leachate treatment loop. Waste Manag Res 2023; 41:264-284. [PMID: 35924944 PMCID: PMC9972246 DOI: 10.1177/0734242x221116212] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 05/25/2022] [Indexed: 05/19/2023]
Abstract
Membrane filtration processes have been used to treat landfill leachate. On the other hand, closing the leachate treatment loop and finding a final destination for landfill leachate membrane concentrate (LLMC) - residual stream of membrane systems - is challenging for landfill operators. The re-introduction of LLMC into the landfill is typical; however, this approach is critical as concentrate pollutants may accumulate in the leachate treatment facility. From that, leachate concentrate management based on resource recovery rather than conventional treatment and disposal is recommended. This work comprehensively reviews the state-of-the-art of current research on LLMC management from leachate treatment plants towards a resource recovery approach. A general recovery train based on the main LLMC characteristics for implementing the best recovery scheme is presented in this context. LLMCs could be handled by producing clean water and add-value materials. This paper offers critical insights into LLMC management and highlights future research trends.
Collapse
Affiliation(s)
- Ronei de Almeida
- School of Chemistry, Inorganic
Processes Department, Universidade Federal do Rio de Janeiro, Rio de Janeiro,
Brazil
- Department of Civil, Environmental and
Architectural Engineering, University of Padova, Padova, Italy
- Ronei de Almeida, School of Chemistry,
Inorganic Processes Department, Universidade Federal do Rio de Janeiro, 149
Athos da Silveira Ramos Avenue, laboratory I-124, Rio de Janeiro, RJ 21941-909,
Brazil.
| | - Raphael Ferreira Porto
- School of Chemistry, Inorganic
Processes Department, Universidade Federal do Rio de Janeiro, Rio de Janeiro,
Brazil
| | | | - Daniele Maia Bila
- Department of Sanitary and Environment
Engineering, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Maria Cristina Lavagnolo
- Department of Civil, Environmental and
Architectural Engineering, University of Padova, Padova, Italy
| | - Juacyara Carbonelli Campos
- School of Chemistry, Inorganic
Processes Department, Universidade Federal do Rio de Janeiro, Rio de Janeiro,
Brazil
| |
Collapse
|
34
|
Areniello M, Matassa S, Esposito G, Lens PNL. Biowaste upcycling into second-generation microbial protein through mixed-culture fermentation. Trends Biotechnol 2023; 41:197-213. [PMID: 35989113 DOI: 10.1016/j.tibtech.2022.07.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 07/19/2022] [Accepted: 07/22/2022] [Indexed: 01/24/2023]
Abstract
Securing a sustainable protein supply at the global level is among the greatest challenges currently faced by humanity. Alternative protein sources, such as second-generation microbial protein (MP), could give rise to innovative circular bioeconomy practices, synthesizing high-value bioproducts through the recovery and upcycling of resources from overabundant biowastes and residues. Within such a multi-feedstock biorefinery scenario, the wide range of microbial pathways and networks that characterize mixed microbial cultures, offers interesting and not yet fully explored advantages over conventional monoculture-based processes. In this review, we combine a comprehensive analysis of waste recovery platforms for second-generation MP production with a critical evaluation of the research gaps and potentials offered by mixed culture-based MP fermentation processes.
Collapse
|
35
|
Cool NI, James R, Schofield P, Handy JV, Bhatia M, Banerjee S. Tunnel-Structured ζ-V 2O 5 as a Redox-Active Insertion Host for Hybrid Capacitive Deionization. ACS Appl Mater Interfaces 2023; 15:1554-1562. [PMID: 36541932 DOI: 10.1021/acsami.2c17800] [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] [Indexed: 06/17/2023]
Abstract
Much of the earth's water has a salt content that is too high for human consumption or agricultural use. Enhanced oil recovery operations generate massive volumes of produced water waste with a high mineral content that can substantially exacerbate water distress. Current deionization techniques such as reverse osmosis function by removing the water (majority phase) from the salt (minority phase) and are thus exceedingly energy-intensive. Furthermore, these methods are limited in their ability to selectively extract high-value ions from produced water waste and brine streams. Hybrid capacitive deionization holds promise for enabling both desalination and resource recovery. In this work, we demonstrate the construction of a hybrid capacitive deionization cell that makes use of tunnel-structured ζ-V2O5 as a redox-active positive electrode material. By augmenting surface adsorption with Faradaic insertion processes, a 50% improvement in the ion removal capacity for K and Li ions is obtained as compared to a capacitive high-surface-area carbon electrode. The extracted ions are accommodated in surface sites and interstitial sites within the one-dimensional tunnel framework of ζ-V2O5. The kinetics of ion removal depend on the free energy of hydration, which governs the ease of desolvation at the electrode/electrolyte interface. The overall ion removal capacity additionally depends on the solid-state diffusion coefficient. ζ-V2O5 positive electrodes show substantial selectivity for Li+ removal from mixed flow streams and enrichment of the Li-ion concentration from produced water waste derived from the Permian Basin.
Collapse
Affiliation(s)
- Nicholas I Cool
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3012, United States
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843-3012, United States
| | - Randall James
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3012, United States
| | - Parker Schofield
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3012, United States
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843-3012, United States
| | - Joseph V Handy
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3012, United States
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843-3012, United States
| | - Mukul Bhatia
- Department of Geology and Geophysics, Texas A&M University, College Station, Texas 77843-3012, United States
| | - Sarbajit Banerjee
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3012, United States
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843-3012, United States
| |
Collapse
|
36
|
Alloul A, Blansaer N, Cabecas Segura P, Wattiez R, Vlaeminck SE, Leroy B. Dehazing redox homeostasis to foster purple bacteria biotechnology. Trends Biotechnol 2023; 41:106-119. [PMID: 35843758 DOI: 10.1016/j.tibtech.2022.06.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 02/28/2022] [Revised: 06/14/2022] [Accepted: 06/17/2022] [Indexed: 12/27/2022]
Abstract
Purple non-sulfur bacteria (PNSB) show great potential for environmental and industrial biotechnology, producing microbial protein, biohydrogen, polyhydroxyalkanoates (PHAs), pigments, etc. When grown photoheterotrophically, the carbon source is typically more reduced than the PNSB biomass, which leads to a redox imbalance. To mitigate the excess of electrons, PNSB can exhibit several 'electron sinking' strategies, such as CO2 fixation, N2 fixation, and H2 and PHA production. The lack of a comprehensive (over)view of these redox strategies is hindering the implementation of PNSB for biotechnology applications. This review aims to present the state of the art of redox homeostasis in phototrophically grown PNSB, presenting known and theoretically expected strategies, and discussing them from stoichiometric, thermodynamic, metabolic, and economic points of view.
Collapse
Affiliation(s)
- Abbas Alloul
- Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Antwerpen, Belgium.
| | - Naïm Blansaer
- Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Antwerpen, Belgium
| | | | - Ruddy Wattiez
- Laboratory of Proteomics and Microbiology, University of Mons, Mons, Belgium
| | - Siegfried E Vlaeminck
- Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Antwerpen, Belgium
| | - Baptiste Leroy
- Laboratory of Proteomics and Microbiology, University of Mons, Mons, Belgium
| |
Collapse
|
37
|
Karakatsanis G, Makropoulos C. Resource Recovery and the Sherwood Plot. Entropy (Basel) 2022; 25:4. [PMID: 36673145 PMCID: PMC9857481 DOI: 10.3390/e25010004] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 12/02/2022] [Accepted: 12/11/2022] [Indexed: 06/17/2023]
Abstract
Our work analyzes the biophysical and economic foundations of the Sherwood Plot (SP). In general, the SP depicts the theoretical relationship between the cost of recovering a target material or an identified Value Added Compound (VAC) from a waste matrix and its dilution in the waste matrix; specifically suggesting that the recovery cost is reverse proportional to the VAC's dilution in it. We further utilize the SP as a scientifically consistent and economically coherent analytical framework for measuring resource recovery performance. Initially, we analyze the SP's fundamental physical properties, as well as its many potential economic extensions. Specifically, we substantiate the relation between a VAC's Entropy, Dilution and Recovery Cost. On these grounds we present the SP's remarkable and numerous economic properties that make it consistent to its physical foundations; thus integrating concisely its physical and economic aspects and postulate a generalized SP function. We further test econometrically the validity of an SP based on both deterministic and stochastic real data from a small-scale industrial unit of polyphenols' recovery from natural fruit juice production residual wastewater. In turn, based on the fusion of our theoretical argumentation and empirical findings we dive into the epistemological extensions of the SP. Specifically, we study how the recovery cost structure at the single industry level is revealed by the SP and can be useful for postulating cost structure ontologies. Cost ontologies are in turn useful as a diagnostic of the formation process of VAC recovery markets as well as their structure and concentration, defining the industrial shares when many industries operate in the recovery of the same VAC.
Collapse
Affiliation(s)
- Georgios Karakatsanis
- Department of Research, EVOTROPIA Ecological Finance Architectures Private Company (P.C.), 190 Syngrou Avenue, 17671 Kallithea, Greece
- Department of Water Resources and Environmental Engineering, School of Civil Engineering, National Technical University of Athens (NTUA), 9 Heroon Polytechneiou St., 15870 Zografou, Greece
| | - Christos Makropoulos
- Department of Water Resources and Environmental Engineering, School of Civil Engineering, National Technical University of Athens (NTUA), 9 Heroon Polytechneiou St., 15870 Zografou, Greece
| |
Collapse
|
38
|
Carreras-Sempere M, Biel C, Viñas M, Guivernau M, Caceres R. The use of recovered struvite and ammonium nitrate in fertigation in a horticultural rotation: agronomic and microbiological assessment. Environ Technol 2022:1-17. [PMID: 36453585 DOI: 10.1080/09593330.2022.2154172] [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: 07/14/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Phosphorus and nitrogen recovery from wastewater as struvite and ammonium nitrate (AN) may be viable alternative fertilizers to boost circularity in horticulture. A 2-year fertigated crop rotation in soil under greenhouse conditions was evaluated to determine the efficiency of both recovered products as raw materials for a nutrient solution (NS) manufacture. The effects of these treatments versus synthetic fertilizers were compared in terms of crop performance, plant nutrient uptake, soil chemistry and microbiota. This is the first study to implement struvite through fertigation as the sole source of P in soil crops. Results showed that both recovered products can be used as fertilizers in NS, due to the similar response to the control for different parameters and crops (tomato, lettuce, and cauliflower). However, the AN treatment showed lower yield in the first tomato crop, which results may depend on the cultivar ammonium tolerance. Besides, the concentration of heavy metals in fruits/leaves was below the permissible limits. Total and Olsen phosphorus soil analysis revealed no differences among treatments, resulting in a similar performance of P-struvite to commercial phosphate. Bulk soil bacteria structure, richness and relative dominance were increased over time, while archaea only showed lower evenness, both despite the fertilization strategy. Shannon diversity was not significantly affected. A predominance of ammonia-oxidizing bacteria (AOB) versus archaea (AOA) was observed, while nitrite-oxidizing bacteria (NOB), dominated by Nitrospira, increased with fertigation. Our results demonstrate that fertilizer blends for NS containing recovered nutrients are a feasible alternative to synthetic fertilizers.
Collapse
Affiliation(s)
- Mar Carreras-Sempere
- Sustainable Plant Protection Program, Institute of Agrifood Research and Technology (IRTA), Cabrils, Spain
- Sustainability in Biosystems Program, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, Spain
| | - Carmen Biel
- Sustainable Plant Protection Program, Institute of Agrifood Research and Technology (IRTA), Cabrils, Spain
| | - Marc Viñas
- Sustainability in Biosystems Program, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, Spain
| | - Miriam Guivernau
- Sustainability in Biosystems Program, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, Spain
| | - Rafaela Caceres
- Sustainable Plant Protection Program, Institute of Agrifood Research and Technology (IRTA), Cabrils, Spain
- Sustainability in Biosystems Program, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, Spain
| |
Collapse
|
39
|
Aguilar-Moreno M, Vinardell S, Reig M, Vecino X, Valderrama C, Cortina JL. Impact of Sidestream Pre-Treatment on Ammonia Recovery by Membrane Contactors: Experimental and Economic Evaluation. Membranes (Basel) 2022; 12:membranes12121251. [PMID: 36557158 PMCID: PMC9787290 DOI: 10.3390/membranes12121251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/05/2022] [Accepted: 12/08/2022] [Indexed: 05/19/2023]
Abstract
Membrane contactor is a promising technology for ammonia recovery from the anaerobic digestion centrate. However, high suspended solids and dissolved organic matter concentrations can reduce the effectiveness of the technology. In this study, coagulation-flocculation (C/F) and aeration pre-treatments were evaluated to reduce chemical oxygen demand (COD), turbidity, suspended solids and alkalinity before the ammonia recovery stage using a membrane contactor. The mass transfer coefficient (Km) and total ammonia (TAN) recovery efficiency of the membrane contactor increased from 7.80 × 10-7 to 1.04 × 10-5 m/s and from 8 to 67%, respectively, after pre-treating the real sidestream centrate. The pre-treatment results showed that dosing aluminium sulphate (Al2(SO4)3) at 30 mg Al/L was the best strategy for the C/F process, providing COD, turbidity and TSS removal efficiencies of 50 ± 5, 95 ± 3 and 90 ± 4%, respectively. The aeration step reduced 51 ± 6% the HCO3- content and allowed reducing alkaline consumption by increasing the pH before the membrane contactor. The techno-economic evaluation showed that the combination of C/F, aeration and membrane contactor can be economically feasible for ammonia recovery. Overall, the results of this study demonstrate that C/F and aeration are simple and effective techniques to improve membrane contactor performance for nitrogen recovery from the anaerobic digestion centrate.
Collapse
Affiliation(s)
- Miguel Aguilar-Moreno
- Chemical Engineering Department, Escola d’Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC)-BarcelonaTECH, C/Eduard Maristany 10-14, Campus Diagonal-Besòs, 08930 Barcelona, Spain
- Barcelona Research Center for Multiscale Science and Engineering, Campus Diagonal-Besòs, 08930 Barcelona, Spain
- Correspondence: ; Tel.: +34-93-4016997
| | - Sergi Vinardell
- Chemical Engineering Department, Escola d’Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC)-BarcelonaTECH, C/Eduard Maristany 10-14, Campus Diagonal-Besòs, 08930 Barcelona, Spain
- Barcelona Research Center for Multiscale Science and Engineering, Campus Diagonal-Besòs, 08930 Barcelona, Spain
| | - Mònica Reig
- Chemical Engineering Department, Escola d’Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC)-BarcelonaTECH, C/Eduard Maristany 10-14, Campus Diagonal-Besòs, 08930 Barcelona, Spain
- Barcelona Research Center for Multiscale Science and Engineering, Campus Diagonal-Besòs, 08930 Barcelona, Spain
| | - Xanel Vecino
- Chemical Engineering Department, Escola d’Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC)-BarcelonaTECH, C/Eduard Maristany 10-14, Campus Diagonal-Besòs, 08930 Barcelona, Spain
- Barcelona Research Center for Multiscale Science and Engineering, Campus Diagonal-Besòs, 08930 Barcelona, Spain
| | - César Valderrama
- Chemical Engineering Department, Escola d’Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC)-BarcelonaTECH, C/Eduard Maristany 10-14, Campus Diagonal-Besòs, 08930 Barcelona, Spain
- Barcelona Research Center for Multiscale Science and Engineering, Campus Diagonal-Besòs, 08930 Barcelona, Spain
| | - José Luis Cortina
- Chemical Engineering Department, Escola d’Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC)-BarcelonaTECH, C/Eduard Maristany 10-14, Campus Diagonal-Besòs, 08930 Barcelona, Spain
- Barcelona Research Center for Multiscale Science and Engineering, Campus Diagonal-Besòs, 08930 Barcelona, Spain
- CETaqua, Carretera d’Esplugues, 75, 08940 Cornellà de Llobregat, Spain
| |
Collapse
|
40
|
Werber JR, Peterson C, Stipanic DF, Hillmyer MA. Polymeric Microcapsules as Robust Mimics of Emulsion Liquid Membranes for Selective Ion Separations. Environ Sci Technol 2022; 56:17352-17363. [PMID: 36395268 DOI: 10.1021/acs.est.2c07242] [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] [Indexed: 06/16/2023]
Abstract
Selective ion separations are increasingly needed to combat water scarcity, recover resources from wastewater, and enable the efficient recycling of electronics waste. Emulsion liquid membranes (ELMs) have received interest due to rapid kinetics, high selectivities, and low solvent requirements but are too unstable for industrial usage. We demonstrate that polymeric microcapsules can serve as robust, solvent-free mimics of ELMs. As a proof of concept, we incorporated the copper-selective ligand Lix 84-I in the walls of microcapsules formed from a commercial polystyrene-b-polybutadiene-b-polystyrene triblock polymer. The microcapsules were formed from a double-emulsion template, resulting in particles typically 20-120 μm in diameter that encapsulated even smaller droplets of a dilute (≤0.5 M) H2SO4 solution. Batch experiments demonstrated facilitated-transport behavior, with equilibrium reached in as little as 10 min for microcapsules with 1% ligand, and with ∼15-fold selectivity for Cu2+ over Ni2+. Furthermore, the microcapsules could be packed readily in columns for flow-through operation, thus enabling near-complete Cu2+ removal in ∼2 min under certain conditions, recovery of Cu2+ by flowing through fresh dilute H2SO4, and reuse for at least 10 cycles. The approach in this work can serve as a template for using selective ligands to enable robust and simple flow-through processes for a variety of selective ion separations.
Collapse
Affiliation(s)
- Jay R Werber
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota55455, United States
- Department of Chemical Engineering & Applied Chemistry, University of Toronto, Toronto, M5S 3E5, Canada
| | - Colin Peterson
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota55455, United States
| | - Dean F Stipanic
- Department of Chemical Engineering & Applied Chemistry, University of Toronto, Toronto, M5S 3E5, Canada
| | - Marc A Hillmyer
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota55455, United States
| |
Collapse
|
41
|
Orner KD, Smith S, Nordahl S, Chakrabarti A, Breunig H, Scown CD, Leverenz H, Nelson KL, Horvath A. Environmental and Economic Impacts of Managing Nutrients in Digestate Derived from Sewage Sludge and High-Strength Organic Waste. Environ Sci Technol 2022; 56:17256-17265. [PMID: 36409840 DOI: 10.1021/acs.est.2c04020] [Citation(s) in RCA: 6] [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] [Indexed: 06/16/2023]
Abstract
Increasingly stringent limits on nutrient discharges are motivating water resource recovery facilities (WRRFs) to consider the implementation of sidestream nutrient removal or recovery technologies. To further increase biogas production and reduce landfilled waste, WRRFs with excess anaerobic digestion capacity can accept other high-strength organic waste (HSOW) streams. The goal of this study was to characterize and evaluate the life-cycle global warming potential (GWP), eutrophication potential, and economic costs and benefits of sidestream nutrient management and biosolid management strategies following digestion of sewage sludge augmented by HSOW. Five sidestream nutrient management strategies were analyzed using environmental life-cycle assessment (LCA) and life-cycle cost analysis (LCCA) for codigestion of municipal sewage sludge with and without HSOW. As expected, thermal stripping and ammonia stripping were characterized by a much lower eutrophication potential than no sidestream treatment; significantly higher fertilizer prices would be needed for this revenue stream to cover the capital and chemical costs. Composting all biosolids dramatically reduced the GWP relative to the baseline biosolid option but had slightly higher eutrophication potential. These complex environmental and economic tradeoffs require utilities to consider their social, environmental, and economic values in addition to present or upcoming nutrient discharge limits prior to making decisions in sidestream and biosolids management.
Collapse
Affiliation(s)
- Kevin D Orner
- Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, United States
- National Science Foundation Engineering Research Center for Re-inventing the Nation's Urban Water Infrastructure, Berkeley, California 94720, United States
| | - Sarah Smith
- Energy Analysis and Environmental Impacts Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Sarah Nordahl
- Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, United States
- Energy Analysis and Environmental Impacts Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Alicia Chakrabarti
- East Bay Municipal Utility District, Oakland, California 94607, United States
| | - Hanna Breunig
- Energy Analysis and Environmental Impacts Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Corinne D Scown
- Energy Analysis and Environmental Impacts Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Energy and Biosciences Institute, University of California, Berkeley, California 94720, United States
- Life-Cycle, Economics, and Agronomy Division, Joint BioEnergy Institute, Emeryville, California 94608, United States
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Harold Leverenz
- Department of Civil and Environmental Engineering, University of California, Davis, California 95616, United States
| | - Kara L Nelson
- Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, United States
- National Science Foundation Engineering Research Center for Re-inventing the Nation's Urban Water Infrastructure, Berkeley, California 94720, United States
| | - Arpad Horvath
- Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, United States
- National Science Foundation Engineering Research Center for Re-inventing the Nation's Urban Water Infrastructure, Berkeley, California 94720, United States
| |
Collapse
|
42
|
Cook E, Velis CA, Cottom JW. Scaling up resource recovery of plastics in the emergent circular economy to prevent plastic pollution: Assessment of risks to health and safety in the Global South. Waste Manag Res 2022; 40:1680-1707. [PMID: 35875954 PMCID: PMC9606178 DOI: 10.1177/0734242x221105415] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Over the coming decades, a large additional mass of plastic waste will become available for recycling, as efforts increase to reduce plastic pollution and facilitate a circular economy. New infrastructure will need to be developed, yet the processes and systems chosen should not result in adverse effects on human health and the environment. Here, we present a rapid review and critical semi-quantitative assessment of the potential risks posed by eight approaches to recovering value during the resource recovery phase from post-consumer plastic packaging waste collected and separated with the purported intention of recycling. The focus is on the Global South, where there are more chances that high risk processes could be run below standards of safe operation. Results indicate that under non-idealised operational conditions, mechanical reprocessing is the least impactful on the environment and therefore most appropriate for implementation in developing countries. Processes known as 'chemical recycling' are hard to assess due to lack of real-world process data. Given their lack of maturity and potential for risk to human health and the environment (handling of potentially hazardous substances under pressure and heat), it is unlikely they will make a useful addition to the circular economy in the Global South in the near future. Inevitably, increasing circular economy activity will require expansion towards targeting flexible, multi-material and multilayer products, for which mechanical recycling has well-established limitations. Our comparative risk overview indicates major barriers to changing resource recovery mode from the already dominant mechanical recycling mode towards other nascent or energetic recovery approaches.
Collapse
Affiliation(s)
| | - Costas A Velis
- Costas A Velis, Room 304, School of Civil Engineering, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
| | | |
Collapse
|
43
|
Ferby M, Zou S, He Z. Effects of draw solutes on an integrated forward osmosis-Microbial fuel cell system treating a synthetic wastewater. Water Environ Res 2022; 94:e10802. [PMID: 36333995 DOI: 10.1002/wer.10802] [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: 08/10/2022] [Revised: 09/21/2022] [Accepted: 10/08/2022] [Indexed: 06/16/2023]
Abstract
Microbial fuel cells (MFCs) and forward osmosis (FO) are both attractive and versatile wastewater treatment technologies that possess disadvantageous qualities that prevent their optimal performance. This study aimed to investigate how draw solute selection for FO treatment would affect MFC performance in a coupled FO-MFC system. Two types of draw solutes, NH4 HCO3 and NaCl, were studied, and it was found that 1.0 M NH4 HCO3 (FO-MFC-A) and 0.68 M NaCl (FO-MFC-B) had similar water fluxes of 6.04 to 3.39 LMH and 6.25 to 3.54 LMH, respectively. The reverse salt flux from the draw decreased the feed solution resistance for both draw solutes, but the FO-MFC-A system (0.32 W m-2 ) had a higher maximum power density than the FO-MFC-B system (0.26 W m-2 ). The current density for the FO-MFC-B system increased due to continuous solution resistance decrease, whereas it remained constant for the FO-MFC-A. The difference in Coulombic efficiencies (32.8% vs. 25.6%) but similar Coulombic recoveries (10.2% vs. 11.4%) between the FO-MFC-A and FO-MFC-B systems suggested that the FO-MFC-A might have the inhibited microbial activity by high ammonium/ammonia. The FO-MFC-A system had the lower energy consumption for nutrient removal (2.01 kWh kg-1 NH4 + -N) and recovery (8.87 kWh kg-1 NH4 + -N). These results have shown that NH4 HCO3 as a draw solute can have advantages of higher power density, higher Coulombic efficiency, and recoverability for draw regeneration, but its potential inhibition on microbial activity must also be considered. PRACTITIONER POINTS: Forward osmosis can be connected to microbial fuel cells for wastewater treatment. Water recovery by forward osmosis can greatly reduce the wastewater volume to microbial fuel cells. Ammonium draw solutes can result in lower volumetric energy consumption. Ammonia inhabitation of anode microbes will decrease organic removal.
Collapse
Affiliation(s)
- Matthew Ferby
- Department of Energy, Environmental and Chemical Engineering, Washington University, St. Louis, MO, USA
| | - Shiqiang Zou
- Department of Civil and Environmental Engineering, Auburn University, Auburn, Alabama, USA
| | - Zhen He
- Department of Energy, Environmental and Chemical Engineering, Washington University, St. Louis, MO, USA
| |
Collapse
|
44
|
Jiang Q, Chen H, Fu Z, Fu X, Wang J, Liang Y, Yin H, Yang J, Jiang J, Yang X, Wang H, Liu Z, Su R. Current Progress, Challenges and Perspectives in the Microalgal-Bacterial Aerobic Granular Sludge Process: A Review. Int J Environ Res Public Health 2022; 19:13950. [PMID: 36360829 PMCID: PMC9655209 DOI: 10.3390/ijerph192113950] [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] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/18/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
Traditional wastewater treatment technologies have become increasingly inefficient to meet the needs of low-consumption and sustainable wastewater treatment. Researchers are committed to seeking new wastewater treatment technologies, to reduce the pressure on the environment caused by resource shortages. Recently, a microalgal-bacterial granular sludge (MBGS) technology has attracted widespread attention due to its high efficiency wastewater treatment capacity, low energy consumption, low CO2 emissions, potentially high added values, and resource recovery capabilities. This review focused primarily on the following aspects of microalgal-bacterial granular sludge technology: (1) MBGS culture and maintenance operating parameters, (2) MBGS application in different wastewaters, (3) MBGS additional products: biofuels and bioproducts, (4) MBGS energy saving and consumption reduction: greenhouse gas emission reduction, and (5) challenges and prospects. The information in this review will help us better understand the current progress and future direction of the MBGS technology development. It is expected that this review will provide a sound theoretical basis for the practical applications of a MBGS technology in environmentally sustainable wastewater treatment, resource recovery, and system optimization.
Collapse
Affiliation(s)
- Qianrong Jiang
- Ecological Environment Management and Assessment Center, Central South University of Forestry and Technology, Changsha 410004, China
- School of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Honglei Chen
- Ecological Environment Management and Assessment Center, Central South University of Forestry and Technology, Changsha 410004, China
- School of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Zeding Fu
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China
| | - Xiaohua Fu
- Ecological Environment Management and Assessment Center, Central South University of Forestry and Technology, Changsha 410004, China
- School of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Jiacheng Wang
- Ecological Environment Management and Assessment Center, Central South University of Forestry and Technology, Changsha 410004, China
- School of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yingqi Liang
- Ecological Environment Management and Assessment Center, Central South University of Forestry and Technology, Changsha 410004, China
- School of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Hailong Yin
- Ecological Environment Management and Assessment Center, Central South University of Forestry and Technology, Changsha 410004, China
- School of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Junbo Yang
- Ecological Environment Management and Assessment Center, Central South University of Forestry and Technology, Changsha 410004, China
- School of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Jie Jiang
- Ecological Environment Management and Assessment Center, Central South University of Forestry and Technology, Changsha 410004, China
- School of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Xinxin Yang
- Ecological Environment Management and Assessment Center, Central South University of Forestry and Technology, Changsha 410004, China
- School of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - He Wang
- Ecological Environment Management and Assessment Center, Central South University of Forestry and Technology, Changsha 410004, China
- School of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Zhiming Liu
- Department of Biology, Eastern New Mexico University, Portales, NM 88130, USA
| | - Rongkui Su
- Ecological Environment Management and Assessment Center, Central South University of Forestry and Technology, Changsha 410004, China
- School of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| |
Collapse
|
45
|
Sanchis-Perucho P, Aguado D, Ferrer J, Seco A, Robles Á. Evaluating the Feasibility of Employing Dynamic Membranes for the Direct Filtration of Municipal Wastewater. Membranes (Basel) 2022; 12:1013. [PMID: 36295772 PMCID: PMC9611946 DOI: 10.3390/membranes12101013] [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] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/13/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
The aim of this study was to assess the feasibility of using dynamic membranes for direct filtration of municipal wastewater. The influence of different alternative supporting materials (one or two layers of flat open monofilament woven polyamide meshes with 1 or 5 µm of pore size) was studied. A stable short-term self-forming DM was achieved (from some hours to 3 days) regardless of the supporting material used, producing relatively similar permeate qualities (total suspended solids, chemical oxygen demand, total nitrogen, total phosphorous and turbidity of 67-88 mg L-1, 155-186 mg L-1, 48.7-50.4 mg L-1, 4.7-4.9 mg L-1, and 167-174 NTU, respectively). A DM permeability loss rate of from 5.21 to 10.03 LMH bar-1 day-1 was obtained, which depended on the supporting material used. Unfortunately, the preliminary energy, carbon footprint, and economic evaluations performed showed that although DMs obtain higher pollutant captures than conventional treatments (primary settler), the benefits are not enough to justify their use for treating average municipal wastewater. However, this alternative scheme could be suitable for treating higher-loaded MWW with a higher fraction of organic matter in the non-settleable solids.
Collapse
Affiliation(s)
- Pau Sanchis-Perucho
- CALAGUA—Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, 46100 Burjassot, Spain
| | - Daniel Aguado
- CALAGUA—Unidad Mixta UV-UPV, Institut Universitari d’Investigació d’Enginyeria de l’Aigua i Medi Ambient–IIAMA, Universitat Politècnica de Valencia, 46022 Valencia, Spain
| | - José Ferrer
- CALAGUA—Unidad Mixta UV-UPV, Institut Universitari d’Investigació d’Enginyeria de l’Aigua i Medi Ambient–IIAMA, Universitat Politècnica de Valencia, 46022 Valencia, Spain
| | - Aurora Seco
- CALAGUA—Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, 46100 Burjassot, Spain
| | - Ángel Robles
- CALAGUA—Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, 46100 Burjassot, Spain
| |
Collapse
|
46
|
Shashvatt U, Amurrio F, Blaney L. Ligand-Enabled Donnan Dialysis for Phosphorus Recovery from Alum-Laden Waste Activated Sludge. Environ Sci Technol 2022; 56:13945-13953. [PMID: 36095332 DOI: 10.1021/acs.est.2c02153] [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] [Indexed: 06/15/2023]
Abstract
While many nutrient recovery technologies target liquid waste streams, new strategies are required for effective phosphorus recovery from solid waste. This study reports an innovative ligand-enabled Donnan dialysis process to recover orthophosphate (P(V)) from alum-laden waste activated sludge (WAS). Four ligands, namely acetate, citrate, ethylenediaminetetraacetate (EDTA), and oxalate, were evaluated for P(V) release from a synthetic sludge containing 5 mM P(V) and 25 mM Al(III) and a real, alum-laden WAS with similar contents. Citrate and EDTA released more than 95% of P(V) at doses of 30 mM, outperforming acetate and oxalate. The ligand-based solubilization strategy was coupled with Donnan dialysis to recover P(V) into a clean sodium chloride draw solution. After Donnan dialysis with the synthetic sludge, the P(V) recovery's order was as follows: EDTA (54.4%) > citrate (41.7%) > oxalate (4.3%). The P(V) recovery efficiencies were slightly lower for Donnan dialysis with real, alum-laden WAS, namely 45.1% and 25.2% for EDTA and citrate addition, respectively, due to competitive effects exerted by other dissolved species. These promising results successfully demonstrated the proof-of-concept for ligand-enabled Donnan dialysis.
Collapse
Affiliation(s)
- Utsav Shashvatt
- Department of Chemical, Biochemical, and Environmental Engineering, University of Maryland Baltimore County, 1000 Hilltop Circle, Engineering Building, Room 314, Baltimore, Maryland 21250, United States
| | - Fabian Amurrio
- Department of Chemical, Biochemical, and Environmental Engineering, University of Maryland Baltimore County, 1000 Hilltop Circle, Engineering Building, Room 314, Baltimore, Maryland 21250, United States
| | - Lee Blaney
- Department of Chemical, Biochemical, and Environmental Engineering, University of Maryland Baltimore County, 1000 Hilltop Circle, Engineering Building, Room 314, Baltimore, Maryland 21250, United States
| |
Collapse
|
47
|
Pei R, Estévez-Alonso Á, Ortiz-Seco L, van Loosdrecht MCM, Kleerebezem R, Werker A. Exploring the Limits of Polyhydroxyalkanoate Production by Municipal Activated Sludge. Environ Sci Technol 2022; 56:11729-11738. [PMID: 35900322 PMCID: PMC9387092 DOI: 10.1021/acs.est.2c03043] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 06/01/2023]
Abstract
Municipal activated sludge can be used for polyhydroxyalkanoate (PHA) production, when supplied with volatile fatty acids. In this work, standardized PHA accumulation assays were performed with different activated sludge to determine (1) the maximum biomass PHA content, (2) the degree of enrichment (or volume-to-volume ratio of PHA-accumulating bacteria with respect to the total biomass), and (3) the average PHA content in the PHA-storing biomass fraction. The maximum attained biomass PHA content with different activated sludge ranged from 0.18 to 0.42 gPHA/gVSS, and the degree of enrichment ranged from 0.16 to 0.51 volume/volume. The average PHA content within the PHA-accumulating biomass fraction was relatively constant and independent of activated sludge source, with an average value of 0.58 ± 0.07 gPHA/gVSS. The degree of enrichment for PHA-accumulating bacteria was identified as the key factor to maximize PHA content when municipal activated sludge is directly used for PHA accumulation. Future optimization should focus on obtaining a higher degree of enrichment of PHA-accumulating biomass, either through selection during wastewater treatment or by selective growth during PHA accumulation. A PHA content in the order of 0.6 g PHA/g VSS is a realistic target to be achieved when using municipal activated sludge for PHA production.
Collapse
Affiliation(s)
- Ruizhe Pei
- Department
of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
- Wetsus, European
Centre of Excellence for Sustainable Water
Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
| | - Ángel Estévez-Alonso
- Department
of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
- Wetsus, European
Centre of Excellence for Sustainable Water
Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
| | - Laura Ortiz-Seco
- Wetsus, European
Centre of Excellence for Sustainable Water
Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
| | - Mark C. M. van Loosdrecht
- Department
of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Robbert Kleerebezem
- Department
of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Alan Werker
- Wetsus, European
Centre of Excellence for Sustainable Water
Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
| |
Collapse
|
48
|
Grossule V, Fang D, Yue D, Lavagnolo MC, Raga R. Preparation of artificial MSW leachate for treatment studies: Testing on black soldier fly larvae process. Waste Manag Res 2022; 40:1231-1241. [PMID: 34963402 DOI: 10.1177/0734242x211066702] [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] [Indexed: 06/14/2023]
Abstract
When approaching the study of new processes for leachate treatment, each influencing variable should be kept under control to better comprehend the treatment process. However, leachate quality is difficult to control as it varies dramatically from one landfill to another, and in line with landfill ageing. To overcome this problem, the present study investigated the option of preparing a reliable artificial leachate in terms of quality consistency and representativeness in simulating the composition of real municipal solid waste (MSW) leachate, in view of further investigate the recent treatment process using black soldier fly (BSF) larvae. Two recipes were used to simulate a real leachate (RL): one including chemical ingredients alone (artificial synthetic leachate-SL), and the other including chemicals mixed with artificial food waste (FW) eluate (artificial mixed leachate-ML). Research data were analysed, elaborated and discussed to assess simulation performance according to a series of parameters, such as Analytical representativeness, Treatment representativeness (in this case specific for the BSF larvae process), Recipe relevance, Repeatability and Flexibility in selectively modifying individual quality parameters. The best leachate simulation performance was achieved by the synthetic leachate, with concentration values generally ranging between 97% and 118% of the RL values. When feeding larvae with both RL and SL, similar mortality values and growth performance were observed.
Collapse
Affiliation(s)
- Valentina Grossule
- DICEA, Department of Civil, Architectural and Environmental Engineering, University of Padova, Padova, Italy
| | - Ding Fang
- School of Environment, Tsinghua University, Beijing, PR China
| | - Dongbei Yue
- School of Environment, Tsinghua University, Beijing, PR China
| | - Maria Cristina Lavagnolo
- DICEA, Department of Civil, Architectural and Environmental Engineering, University of Padova, Padova, Italy
| | - Roberto Raga
- DICEA, Department of Civil, Architectural and Environmental Engineering, University of Padova, Padova, Italy
| |
Collapse
|
49
|
Lam KL, Solon K, Jia M, Volcke EIP, van der Hoek JP. Life Cycle Environmental Impacts of Wastewater-Derived Phosphorus Products: An Agricultural End-User Perspective. Environ Sci Technol 2022; 56:10289-10298. [PMID: 35796480 PMCID: PMC9301919 DOI: 10.1021/acs.est.2c00353] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Recovering phosphorus from wastewater in more concentrated forms has potential to sustainably recirculate phosphorus from cities to agriculture. The environmental sustainability of wastewater-based phosphorus recovery processes or wastewater-derived phosphorus products can be evaluated using life cycle assessment (LCA). Many LCA studies used a process perspective to account for the impacts of integrating phosphorus recovery processes at wastewater treatment plants, while some used a product perspective to assess the impacts of producing wastewater-derived phosphorus products. We demonstrated the application of an end-user perspective by assessing life cycle environmental impacts of substituting half of the conventional phosphorus rock-based fertilizers used in three crop production systems with wastewater-derived phosphorus products from six recovery pathways (RPs). The consequential LCA results show that the substitution reduces global warming potential, eutrophication potential, ecotoxicity potential, and acidification potential of the assessed crop production systems in most RPs and scenarios. The end-user perspective introduced in this study can (i) complement with the process perspective and the product perspective to give a more holistic picture of environmental impacts along the "circular economy value chains" of wastewater-based resource recovery, (ii) enable systemwide assessment of wide uptake of wastewater-derived products, and (iii) draw attention to understanding the long-term environmental impacts of using wastewater-derived products.
Collapse
Affiliation(s)
- Ka Leung Lam
- Department
of Water Management, Delft University of
Technology, Stevinweg
1, Delft 2628 CN, The Netherlands
- Division
of Natural and Applied Sciences, Duke Kunshan
University, 8 Duke Avenue, Kunshan, Jiangsu 215316, China
- ,
| | - Kimberly Solon
- BioCo
Research Group, Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, Gent 9000, Belgium
| | - Mingsheng Jia
- BioCo
Research Group, Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, Gent 9000, Belgium
| | - Eveline I. P. Volcke
- BioCo
Research Group, Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, Gent 9000, Belgium
| | - Jan Peter van der Hoek
- Department
of Water Management, Delft University of
Technology, Stevinweg
1, Delft 2628 CN, The Netherlands
- Waternet, Korte Ouderkerkerdijk 7, Amsterdam 1096 AC, The Netherlands
| |
Collapse
|
50
|
Shin C, Szczuka A, Liu MJ, Mendoza L, Jiang R, Tilmans SH, Tarpeh WA, Mitch WA, Criddle CS. Recovery of Clean Water and Ammonia from Domestic Wastewater: Impacts on Embodied Energy and Greenhouse Gas Emissions. Environ Sci Technol 2022; 56:8712-8721. [PMID: 35656915 DOI: 10.1021/acs.est.1c07992] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Treatment of domestic wastewater can recover valuable resources, including clean water, energy, and ammonia. Important metrics for these systems are greenhouse gas (GHG) emissions and embodied energy, both of which are location- and technology-dependent. Here, we determine the embodied energy and GHG emissions resulting from a conventional process train, and we compare them to a nonconventional process train. The conventional train assumes freshwater conveyance from a pristine source that requires energy for pumping (US average of 0.29 kWh/m3), aerobic secondary treatment with N removal as N2, and Haber-Bosch synthesis of ammonia. Overall, we find that this process train has an embodied energy of 1.02 kWh/m3 and a GHG emission of 0.77 kg-CO2eq/m3. We compare these metrics to those of a nonconventional process train that features anaerobic secondary treatment technology followed by further purification of the effluent by reverse osmosis and air stripping for ammonia recovery. This "short-cut" process train reduces embodied energy to 0.88 kWh/m3 and GHG emissions to 0.42 kg-CO2eq/m3, while offsetting demand for ammonia from the Haber-Bosch process and decreasing reliance upon water transported over long distances. Finally, to assess the potential impacts of nonconventional nitrogen removal technology, we compared the embodied energy and GHG emissions resulting from partial nitritation/anammox coupled to anaerobic secondary treatment. The resulting process train enabled a lower embodied energy but increased GHG emissions, largely due to emissions of N2O, a potent greenhouse gas.
Collapse
Affiliation(s)
- Chungheon Shin
- Department of Civil and Environmental Engineering, Stanford University, 473 Via Ortega, Stanford, California 94305, United States
- National Science Foundation Engineering Research Center for Re-Inventing the Nation's Urban Water Infrastructure (ReNUWIt), 473 Via Ortega, Stanford, California 94305, United States
- Codiga Resource Recovery Center (CR2C), 692 Pampas Lane, Stanford, California 94305, United States
| | - Aleksandra Szczuka
- Department of Civil and Environmental Engineering, University of Michigan, 2350 Hayward Street, Ann Arbor, Michigan 48109, United States
| | - Matthew J Liu
- Department of Chemical Engineering, Stanford University, 433 Via Ortega, Stanford, California 94305, United States
| | - Lorelay Mendoza
- Department of Chemical Engineering, Stanford University, 433 Via Ortega, Stanford, California 94305, United States
| | - Renjing Jiang
- Department of Civil and Environmental Engineering, University of Illinois Urbana-Champaign, 205 North Mathews Avenue, Urbana, Illinois 61801, United States
| | - Sebastien H Tilmans
- Department of Civil and Environmental Engineering, Stanford University, 473 Via Ortega, Stanford, California 94305, United States
- National Science Foundation Engineering Research Center for Re-Inventing the Nation's Urban Water Infrastructure (ReNUWIt), 473 Via Ortega, Stanford, California 94305, United States
- Codiga Resource Recovery Center (CR2C), 692 Pampas Lane, Stanford, California 94305, United States
| | - William A Tarpeh
- Department of Chemical Engineering, Stanford University, 433 Via Ortega, Stanford, California 94305, United States
- National Science Foundation Engineering Research Center for Re-Inventing the Nation's Urban Water Infrastructure (ReNUWIt), 473 Via Ortega, Stanford, California 94305, United States
| | - William A Mitch
- Department of Civil and Environmental Engineering, Stanford University, 473 Via Ortega, Stanford, California 94305, United States
- National Science Foundation Engineering Research Center for Re-Inventing the Nation's Urban Water Infrastructure (ReNUWIt), 473 Via Ortega, Stanford, California 94305, United States
| | - Craig S Criddle
- Department of Civil and Environmental Engineering, Stanford University, 473 Via Ortega, Stanford, California 94305, United States
- National Science Foundation Engineering Research Center for Re-Inventing the Nation's Urban Water Infrastructure (ReNUWIt), 473 Via Ortega, Stanford, California 94305, United States
- Codiga Resource Recovery Center (CR2C), 692 Pampas Lane, Stanford, California 94305, United States
| |
Collapse
|