Water hyacinth (Eichhornia crassipes (Mart.) Solms.) as an alternative raw material for the production of bio-compost and handmade paper
| Autor: | Nazrul Islam, Omar Faruk, Nipa Adhikary, Atanu Kumar Das, Sumona Alom Papri, Nazmul Ahsan, Adolphe O. Debrot, Fatima Rahman |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Eichhornia crassipes
Environmental Engineering Nitrogen 0208 environmental biotechnology 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law engineering.material Raw material Potash pulping 01 natural sciences Onderz. Form. D Water hyacinth Waste Management and Disposal Kjeldahl method 0105 earth and related environmental sciences Bangladesh biology Compost Chemistry Hyacinth Pulp (paper) Composting Potash Bio-compost General Medicine Hydrogen Peroxide Pulp and paper industry biology.organism_classification Handmade paper 020801 environmental engineering Eichhornia engineering Black liquor Alternative livelihood |
| Zdroj: | Journal of Environmental Management, 294 Journal of Environmental Management 294 (2021) |
| ISSN: | 0301-4797 |
| Popis: | Water hyacinth (WH) is considered as the worst aquatic weed in the world because of its rapid growth and fast spread into new areas of fresh water bodies. We investigated the potentiality of using WH as a raw material for production of handmade paper and compost in Bangladesh. Potash pulping was done using potassium hydroxide (KOH) at different alkali concentrations (8–12%) with a liquor to solid ratio of 7:1 at 145 °C for 2 h. The pulp was bleached using hydrogen peroxide (H2O2), and pulp properties (brightness, tear index and tensile index) of bleached and unbleached pulps were analyzed following the respective TAPPI standards. The produced black liquor was mixed with WH along with kitchen bio-wastes to produce compost. The properties of the compost were tested following the published protocols, i.e., wet digestion, Kjeldahl, vanadomolybdophosphoric acid, and Flame Spectrophotometry methods. Brightness, tensile index and tear index of bleached hand sheets were found to be 37.2%, 49.2 N m/g and 6.79 m.Nm2/g, respectively suggesting significant contribution of bleaching on WH paper quality. Addition of black liquor significantly increased the nitrogen and potassium content of bio-waste compost. Thus, WH can be used as a raw material for making handmade paper while the process by-product can be supplemented to improve the nutritional quality of compost. Such cottage-industry fabrication of WH green products could be developed to control the infestation of WH in water bodies, and this technology may provide for new possible sustainable livelihood option. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect