1
|
Ennackal DJ, Odaneth AA. Functionalization of seaweed bloom-derived Ulvan using response surface methodology with application in flocculation of oil-in-water pollution. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 344:123429. [PMID: 38278406 DOI: 10.1016/j.envpol.2024.123429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 01/06/2024] [Accepted: 01/21/2024] [Indexed: 01/28/2024]
Abstract
Utilizing macroalgal waste biomass for pollution management is a highly efficient method for addressing the environmental difficulties associated with its disposal. To accomplish this, we have attempted to synthesize a graft copolymer by combining ulvan, a sulfated polysaccharide isolated from seaweed, with acrylates. A one-pot synthesis method using UV-initiated graft polymerization with V-50 as the photoinitiator resulted in the production of a distinctive, high-performance, and eco-friendly flocculant, Ulvan-g-Poly (acrylamide-co-acrylic acid) referred as P(U_AAm_AAc). The synthesis was optimized using the CCD-RSM approach, employing molecular weight and inherent viscosity as indicators to optimize the parameters. The structural and physio-chemical properties of the synthesized P(U_AAm_AAc) were characterized utilizing XRD, ATR-FTIR, ζ-potential, and H1 NMR spectroscopy. The flocculation performance of P(U_AAm_AAc) was further examined for the removal of oils from samples with high neem oil in urea solution and low crude oil in seawater. By employing a coagulant-flocculant combination of poly-aluminium chloride (PAC) and P(U_AAm_AAc), it was noted that more than 94% of oil was effectively eliminated in both samples. Optimization of the dosage of P(U_AAm_AAc) resulted in enhanced turbidity reduction and improved dewatering efficiency of the filter cake generated following flocculation. An evaluation of performance was conducted using the commercial flocculant APAM, where synthesized P(U_AAm_AAc) demonstrated similar results. In conclusion, the findings of this research highlight the potential of P(U_AAm_AAc) as a sustainable alternative to commercial flocculants with multifaceted solution to coastal waste management, paving the way for a cleaner and healthier marine ecosystem to mitigate oil emulsion pollution.
Collapse
Affiliation(s)
- Darren Jacob Ennackal
- DBT-ICT Centre for Energy Biosciences, Institute of Chemical Technology, Matunga, Mumbai, 400 019, India.
| | - Annamma Anil Odaneth
- DBT-ICT Centre for Energy Biosciences, Institute of Chemical Technology, Matunga, Mumbai, 400 019, India.
| |
Collapse
|
2
|
Circuncisão AR, Ferreira SS, Silva AMS, Coimbra MA, Cardoso SM. Fucus vesiculosus-Rich Extracts as Potential Functional Food Ingredients: A Holistic Extraction Approach. Foods 2024; 13:540. [PMID: 38397517 PMCID: PMC10888237 DOI: 10.3390/foods13040540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 01/30/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Brown macroalgae are rich sources of nutrients and health-promoting compounds. Nevertheless, their consumption is still limited by their strong organoleptic characteristics, thus requiring the development of extraction strategies to profit from their nutritional value. To fulfil this, two sequential extraction approaches were developed, differing in the solvent used in the first extraction step, water in approach 1 or food-grade ethanol in approach 2, to obtain economic and affordable extracts rich in specific compounds from Fucus vesiculosus. The use of water in the first step of extraction allowed us to recover water-soluble phlorotannins, laminarans and mannuronic-rich alginates, making the subsequent 70% ethanol extract richest in fucoxanthin (0.07% algae DW), and the hot water fractions purest in fucoidans and alginates with a lower mannuronic-to-guluronic (M/G) ratio (2.91). Conversely, when beginning extraction procedures with 96% ethanol, the recovered yields of phlorotannins increased (0.43 g PGE/100 g algae DW), but there was a concomitant seven-fold decrease in the recovery of fucoxanthin in the subsequent 70% ethanol extract. This approach also led to less pure hot water fractions containing fucoidans, laminarans and alginates with a higher M/G ratio (5.50). Overall, this work unveiled the potential of the first extraction steps in sustainable and holistic cascade strategies to modulate the composition of food-grade extracts, creating prospects of their application as tailored functional ingredients in food products.
Collapse
Affiliation(s)
| | | | | | | | - Susana M. Cardoso
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.C.); (S.S.F.); (A.M.S.S.); (M.A.C.)
| |
Collapse
|
3
|
Ummat V, Sivagnanam SP, Rameshkumar S, Pednekar M, Fitzpatrick S, Rai DK, Padamati RB, O'Donnell C, Tiwari BK. Sequential extraction of fucoidan, laminarin, mannitol, alginate and protein from brown macroalgae Ascophyllum nodosum and Fucus vesiculosus. Int J Biol Macromol 2024; 256:128195. [PMID: 38008143 DOI: 10.1016/j.ijbiomac.2023.128195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 11/12/2023] [Accepted: 11/15/2023] [Indexed: 11/28/2023]
Abstract
The study involves development of a green biorefinery process for obtaining fucoidan, laminarin, mannitol, alginate and protein from dry and fresh Fucus vesiculosus and Ascophyllum nodosum using hydrochloric acid and a green extraction solvent. After the extraction of fucoidan which was the targeted biomolecule, an extract and by-product (residual biomass) were obtained. The extract was passed through an ultrafiltration membrane, where fucoidan was obtained in the ultrafiltration retentate while ultrafiltration permeate was analysed for laminarin and mannitol. The residual biomass was used for obtaining alginate using ultrasound (20 kHz, 64 % amplitude and 32 min, optimum parameters for alginate extraction based on our previous study). All the samples, showed good results for alginate, laminarin and mannitol, indicating that the by-products can be utilised using this green extraction process. The comparison of both dry and fresh seaweed is relevant from an industry perspective, as fresh seaweed can directly be used for extraction, avoiding drying which adds significantly to the cost of the process. Life cycle impact assessment of the complete seaweed value chain has been carried out to identify the energy demand and key environmental hotspots. This biorefinery process can be used by industry to improve their processes and utilise the by-products generated efficiently.
Collapse
Affiliation(s)
- Viruja Ummat
- School of Biosystems and Food Engineering, University College Dublin, Belfield, Dublin 4, Ireland; Teagasc Food Research Centre, Ashtown, D15 DY05 Dublin, Ireland; BiOrbic Bioeconomy SFI Research Centre, University College Dublin, Belfield, Dublin 4, Ireland.
| | - Saravana Periaswamy Sivagnanam
- School of Biosystems and Food Engineering, University College Dublin, Belfield, Dublin 4, Ireland; School of Chemical and BioPharmaceutical Sciences, Technological University Dublin, Dublin 24, Ireland
| | - Saranya Rameshkumar
- BiOrbic Bioeconomy SFI Research Centre, University College Dublin, Belfield, Dublin 4, Ireland; CRANN, School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | - Mukesh Pednekar
- School of Physics, CRANN, Trinity College Dublin, Dublin 2, Ireland
| | | | - Dilip K Rai
- Teagasc Food Research Centre, Ashtown, D15 DY05 Dublin, Ireland
| | - Ramesh Babu Padamati
- BiOrbic Bioeconomy SFI Research Centre, University College Dublin, Belfield, Dublin 4, Ireland; CRANN, School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | - Colm O'Donnell
- School of Biosystems and Food Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| | - Brijesh Kumar Tiwari
- Teagasc Food Research Centre, Ashtown, D15 DY05 Dublin, Ireland; BiOrbic Bioeconomy SFI Research Centre, University College Dublin, Belfield, Dublin 4, Ireland
| |
Collapse
|
4
|
Li J, Bergman K, Thomas JBE, Gao Y, Gröndahl F. Life Cycle Assessment of a large commercial kelp farm in Shandong, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166861. [PMID: 37673254 DOI: 10.1016/j.scitotenv.2023.166861] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/01/2023] [Accepted: 09/03/2023] [Indexed: 09/08/2023]
Abstract
The environmental benefits of seaweed cultivation have gained a lot of attention, both in policy strategies and by private companies. Sustainability evaluations of seaweed farming have however focused on a very small part of global production of seaweed - on European cultivations at research and pilot-scales although Asia stands for 99 % of global production with China alone producing 60 %. In this study, we use Life Cycle Assessment (LCA) to evaluate the environmental performance of a 400-hectare Chinese kelp farm with a yearly harvest of 60,000 tons. Primary data from the farm was used to assess impacts up until harvest for the functional unit of 1 ton of fresh-weight kelp. Included in the LCA were impact on climate change, acidification terrestrial and marine eutrophication, and use of land water and energy. In addition, we calculated nutrient uptake. Further, we extracted inventory data of four published LCA studies of farmed kelp and recalculated environmental impacts, applying the same background data and method choices with the aim to compare the effects of scale and cultivation system. The results of the hotspot analysis showed that the plastic ropes and buoys dominated impacts on climate change, freshwater and marine eutrophication, and energy consumption. Consequently, the most effective improvement action was recycling after use. The yearly harvest of the Chinese farm was 1000-4000 times larger than previously evaluated farms compared. Results suggest that streamlined and mature production in the large-scale Chinese kelp farm led to lower electricity and fuel consumption compared to small-scale production, thus placing the Chinese farm with a climate impact of 57.5 kg CO2 eq. per ton fresh-weight kelp on the lower end when comparing the carbon footprint. There was a large variation in carbon footprints, which implies that the kelp cultivation sector has considerable room for optimization.
Collapse
Affiliation(s)
- Ji Li
- School of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, China.
| | - Kristina Bergman
- KTH Royal Institute of Technology, Department of Sustainable Development, Environmental Science and Engineering Teknikringen 10B, SE-100 44 Stockholm, Sweden.
| | - Jean-Baptiste E Thomas
- KTH Royal Institute of Technology, Department of Sustainable Development, Environmental Science and Engineering Teknikringen 10B, SE-100 44 Stockholm, Sweden
| | - Yonghui Gao
- School of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Fredrik Gröndahl
- KTH Royal Institute of Technology, Department of Sustainable Development, Environmental Science and Engineering Teknikringen 10B, SE-100 44 Stockholm, Sweden
| |
Collapse
|
5
|
Flórez-Fernández N, Ferreira-Anta T, Queffelec J, Ingrez IB, Buján M, Muiños A, Domínguez H, Torres MD. Biocosmetics Made with Saccharina latissima Fractions from Sustainable Treatment: Physicochemical and Thermorheological Features. Mar Drugs 2023; 21:618. [PMID: 38132939 PMCID: PMC10744486 DOI: 10.3390/md21120618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/22/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023] Open
Abstract
This work deals with the formulation of natural cosmetics enriched with antioxidant fractions from the ultrasound treatment (US) of the brown seaweed Saccharina latissima. The challenge was the development of a cosmetic matrix without jeopardizing the thermorheological features of the creams, adding microparticles containing the antioxidant fractions using two different carriers, mannitol and alginate. The fundamental chemical characteristics of seaweed and the extracts obtained via sonication, as well as the antioxidant properties of the latter, were analyzed. The highest TEAC (Trolox equivalent antioxidant capacity) value was identified for the extracts subjected to the longest processing time using ultrasound-assisted extraction (240 min). A similar yield of microparticle formulation (around 60%) and load capacity (about 85%) were identified with mannitol and alginate as carriers. Color testing of the creams exhibited small total color differences. The rheological results indicated that the testing temperature, from 5 to 45 °C, notably influenced the apparent viscosity of the matrices. All creams were adequately fitted with the two parameters of the Ostwald-de Waele model, with the flow consistency index following an Arrhenius dependency with the testing temperature. Neither hysteresis nor water syneresis was observed in the proposed cosmetics during 6 months of cold storage at 4-6 °C.
Collapse
Affiliation(s)
- Noelia Flórez-Fernández
- CINBIO, Chemical Engineering Department, Faculty of Science, Campus Ourense, Universidade de Vigo, As Lagoas S/N, 32004 Ourense, Spain; (N.F.-F.); (T.F.-A.); (J.Q.); (M.D.T.)
| | - Tania Ferreira-Anta
- CINBIO, Chemical Engineering Department, Faculty of Science, Campus Ourense, Universidade de Vigo, As Lagoas S/N, 32004 Ourense, Spain; (N.F.-F.); (T.F.-A.); (J.Q.); (M.D.T.)
| | - Julie Queffelec
- CINBIO, Chemical Engineering Department, Faculty of Science, Campus Ourense, Universidade de Vigo, As Lagoas S/N, 32004 Ourense, Spain; (N.F.-F.); (T.F.-A.); (J.Q.); (M.D.T.)
| | - Isa B. Ingrez
- Portomuíños, Polígono Industrial, Rúa Acebedo, Parcela 14, Cerceda, 15185 A Coruña, Spain; (I.B.I.); (M.B.); (A.M.)
| | - Manuela Buján
- Portomuíños, Polígono Industrial, Rúa Acebedo, Parcela 14, Cerceda, 15185 A Coruña, Spain; (I.B.I.); (M.B.); (A.M.)
| | - Antonio Muiños
- Portomuíños, Polígono Industrial, Rúa Acebedo, Parcela 14, Cerceda, 15185 A Coruña, Spain; (I.B.I.); (M.B.); (A.M.)
| | - Herminia Domínguez
- CINBIO, Chemical Engineering Department, Faculty of Science, Campus Ourense, Universidade de Vigo, As Lagoas S/N, 32004 Ourense, Spain; (N.F.-F.); (T.F.-A.); (J.Q.); (M.D.T.)
| | - María Dolores Torres
- CINBIO, Chemical Engineering Department, Faculty of Science, Campus Ourense, Universidade de Vigo, As Lagoas S/N, 32004 Ourense, Spain; (N.F.-F.); (T.F.-A.); (J.Q.); (M.D.T.)
| |
Collapse
|
6
|
Llano T, Arce C, Gallart LE, Perales A, Coz A. Techno-Economic Analysis of Macroalgae Biorefineries: A Comparison between Ethanol and Butanol Facilities. FERMENTATION-BASEL 2023. [DOI: 10.3390/fermentation9040340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Ulva rigida seaweed is constituted by ulvan, which is a sulfated polysaccharide with uses in a wide variety of applications. After the ulvan-oriented extraction process, a crystalline and recalcitrant residue, the so-called pulp, appears. In this work, this residue was valorized through a multiple-stage process. The total processing of the algae consists of hot water extraction, acid hydrolysis, ABE fermentation, and distillation in order to obtain not only ulvan but also butanol and bioethanol to be used as biofuels by simulating two third-generation algae-based biorefineries in Aspen Plus v10 software. Third-generation plants do not compete with food and algae biomass, and they do not require delignification nor pretreatment steps, which are usually the bottleneck of second-generation plants. A plant producing butanol as biofuel together with diluted ulvan, acetone, and ethanol as byproducts was modelled in Aspen Plus software. Regarding the profitability of the investment, the plants producing bioethanol and butanol were economically feasible. The economic parameters for the bioethanol and butanol plants were as follows: NPV equal to 27.66 M$ and 16.67 M$, and IRR equal to 46% and 37%, respectively. The discounted return period was acceptable for these types of plants, which were 4.11 and 3.16 years for the ABE biorefinery and the bioethanol biorefinery, respectively.
Collapse
|
7
|
Life Cycle Assessment of pilot scale production of seaweed-based bioplastic. ALGAL RES 2023. [DOI: 10.1016/j.algal.2023.103036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
|
8
|
Pardilhó S, Cotas J, Pereira L, Oliveira MB, Dias JM. Marine macroalgae in a circular economy context: A comprehensive analysis focused on residual biomass. Biotechnol Adv 2022; 60:107987. [DOI: 10.1016/j.biotechadv.2022.107987] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 04/21/2022] [Accepted: 05/17/2022] [Indexed: 02/06/2023]
|
9
|
Gao G, Beardall J, Jin P, Gao L, Xie S, Gao K. A review of existing and potential blue carbon contributions to climate change mitigation in the Anthropocene. J Appl Ecol 2022. [DOI: 10.1111/1365-2664.14173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Guang Gao
- State Key Laboratory of Marine Environmental Science & College of Ocean and Earth Sciences Xiamen University Xiamen 361005 China
| | - John Beardall
- State Key Laboratory of Marine Environmental Science & College of Ocean and Earth Sciences Xiamen University Xiamen 361005 China
- School of Biological Sciences Monash University Clayton, VI 3800 Australia
| | - Peng Jin
- School of Environmental Science and Engineering Guangzhou University Guangzhou 510006 China
| | - Lin Gao
- State Key Laboratory of Marine Environmental Science & College of Ocean and Earth Sciences Xiamen University Xiamen 361005 China
| | - Shuyu Xie
- State Key Laboratory of Marine Environmental Science & College of Ocean and Earth Sciences Xiamen University Xiamen 361005 China
| | - Kunshan Gao
- State Key Laboratory of Marine Environmental Science & College of Ocean and Earth Sciences Xiamen University Xiamen 361005 China
| |
Collapse
|