Life cycle assessment of sericin recovery from silk degumming wastewaters

Date

2022-12-01

Author

ÇAPAR, GÖKŞEN
PİLEVNELİ, TOLGA
Yetiş, Ülkü
Dilek, Filiz Bengü

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

111
views

0
downloads

Sericin is a silk protein discarded with silk degumming wastewater. Life cycle assessment of sericin recovery from silk degumming wastewater was conducted considering two scenarios; base scenario (no recovery), and sericin recovery with membrane hybrid processes. Base scenario consists of silk degumming and treatment of degumming wastewater. The recovery scenario consists of sericin recovery with the process train; silk degumming, sedimentation, nanofiltration (NF), precipitation and lyophilization. Spray drying was also considered as an alternative to the precipitation and lyophilization. The system boundary was set as cradle to grave and the functional unit was selected as 1 kg of sericin. The recovery scenarios had much higher environmental impacts as compared to the base scenario. In terms of kg CO2 equivalence, the impact of the recovery scenarios on climate change (global warming effect) was found to be approximately 2000–2650 times higher than the base scenario. In recovery scenario, endpoint impact score for climate change was as high as 50%, followed by natural resources (34%) and human health impacts (15%). The use of centrifugation + lyophilization option was found to cause 40%–50% more impacts compared to the spray drying option. The highest impact was for the nonrenewable energy impact category, followed by the global warming category. NF and sericin degumming were the processes with highest environmental impacts.

Subject Keywords

Life cycle assessment, Resource recovery, Sericin, Silk

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85141765683&origin=inward
https://hdl.handle.net/11511/101569

Journal

Sustainable Chemistry and Pharmacy

DOI

https://doi.org/10.1016/j.scp.2022.100889

Collections

Department of Environmental Engineering, Article

Suggestions

OpenMETU
Core

Fabrication and characterization of silk sericin based composite films for biomedical applications Haliloğlu, Alper; Ercan, Batur; Department of Metallurgical and Materials Engineering (2023-1-18) Silk Sericin (SS) is one of the two major proteins in silk fiber and it is discarded as a waste in the silk industry. Recently, sericin captured attention in the biomedical field due to its variable amino acid composition and diverse functional groups. The physical and chemical properties of silk sericin can be adjusted via incorporation of different secondary phase additives for biomedical applications. However, brittle nature, low mechanical properties, and inability to avoid bacterial growth by itself li...
SERICIN PROTEIN RECOVERY FROM SILK DEGUMMING WASTEWATER IN PILOT SCALE VIA MEMBRANE HYBRID PROCESSES Gençtürk, Merve; Yetiş, Ülkü; Çapar, Gökşen; Department of Environmental Engineering (2021-5-17) The conventional degumming method that consists of alkaline washing of silk yarn with Marseille soap at high temperatures, dissolves sericin protein into the water and produces so-called silk degumming wastewater (SDW) which is rich in sericin protein. In this study, the separation of sericin protein from the SDW was studied. Firstly, the separation of sericin containing phase from the SDW was optimized. SDW samples were prepared with the application of different soap to silk yarn ratios (FO) and tested for...
Evaluation of sericin/collagen membranes as prospective wound dressing biomaterial AKTÜRK, Omer; Tezcaner, Ayşen; BİLGİLİ, Hasan; Deveci, M. Salih; Gecit, M. Rusen; Keskin, Dilek (2011-09-01) Sericin, a silk protein, has high potential for use in biomedical applications. In this study, wound dressing membranes of Sericin (S) and Collagen (C) were prepared by glutaraldehyde cross-linking at S/C; 2:1,1:1, 1:2, and 0:1 weight ratios. They were stable in water for 4 weeks. However, increasing the proportion of sericin had decreasing effect on the membrane stability. Water swelling property of membranes was enhanced with sericin. The highest water swelling was obtained in 1:1 group (9.06 g/g), but in...
Advanced oxidation techniques for the removal of refractory organics from textile wastewaters Erol, Funda; Özbelge, Ayşe Tülay; Department of Chemical Engineering (2008) Ozonation is an efficient method to degrade refractory organics in textile wastewaters. In recent years, catalytic ozonation is applied to reduce ozone consumption and to increase “chemical oxygen demand” and “total organic carbon” (TOC) removal efficiencies. The ozonation of two industrial dyes, namely Acid Red-151 (AR-151) and Remazol Brilliant Blue R (RBBR) was examined separately both in a semi-batch reactor and also in a fluidized bed reactor (FBR) by conventional and catalytic ozonation with alumina a...
Production of flame retardant polyester composites and fibers Akan, Mithat; Bayramlı, Erdal; Bayram, Göknur; Department of Polymer Science and Technology (2013) Poly(ethylene terephthalate) (PET) fiber is one of the leading synthetic fibers in textile industry. However, its flame retardant properties are poor to be used in certain applications, therefore flame retardant additives are generally used in order to improve flame retardant properties of PET. The main objective of this study is to find suitable flame retardant additives for PET that can synergize with each other and that can improve the flame retardant properties without compromising the mechanical proper...

Citation Formats

G. ÇAPAR, T. PİLEVNELİ, Ü. Yetiş, and F. B. Dilek, “Life cycle assessment of sericin recovery from silk degumming wastewaters,” Sustainable Chemistry and Pharmacy, vol. 30, pp. 0–0, 2022, Accessed: 00, 2023. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85141765683&origin=inward.