Green processing: minimising harmful substances in leather making
| Autor: | Muralidharan Chellappa, Rose Chellan, John Sundar Victor, Durga Jayanthi |
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| Rok vydání: | 2019 |
| Předmět: |
Pollution
Health Toxicology and Mutagenesis media_common.quotation_subject Sulfides 010501 environmental sciences engineering.material 01 natural sciences Sodium sulphide Hazardous waste otorhinolaryngologic diseases Environmental Chemistry Skin 0105 earth and related environmental sciences Lime media_common Pollutant technology industry and agriculture Green Chemistry Technology Oxides Tanning General Medicine Calcium Compounds Pulp and paper industry Microscopy Electron Scanning engineering Environmental science Environmental Pollution |
| Zdroj: | Environmental Science and Pollution Research. 26:6782-6790 |
| ISSN: | 1614-7499 0944-1344 |
| DOI: | 10.1007/s11356-018-04111-z |
| Popis: | Conventional leather processing poses serious threat to the environment due to its numerous chemical treatments which include hazardous chemicals such as sodium sulphide and lime. To minimise the pollutants and harmful substances during leather processing, an enzymatic rehydration-dehairing-fibre-opening process has been achieved in shortest possible time compared to conventional process. The physicochemical characteristics of experimental leathers were found to be comparable with those of conventionally processed leathers. The releases of sugar and proteoglycans were found to be in congruence with the scanning electron micrographs and histology. TGA and DSC results ascertained the stability of enzymatically processed leathers. Pollution load in terms of TOC, BOD, COD, and TDS was reduced up to 80% compared to that of the conventional process. The present work provides immense potential for a new approach in leather making with environmental safeguards. Graphical abstract. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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