Titre : |
Preparation and optimisation of a novel modified bioflocculant for removal of nitrogen in tannery wastewater |
Type de document : |
texte imprimé |
Année de publication : |
2022 |
Article en page(s) : |
p. 1-6 |
Note générale : |
Bibliogr. |
Langues : |
Anglais (eng) |
Catégories : |
Biofloculant Cuirs et peaux -- Industrie -- Aspect de l'environnement Eau -- Épuration -- Élimination des composés organiques Eaux usées -- Epuration Eaux usées -- Teneur en azote total
|
Index. décimale : |
675 Technologie du cuir et de la fourrure |
Résumé : |
In this work, a modified bioflocculant was successfully prepared involving HM-636 amphoteric starch measuring the effect of the removal of total nitrogen from tannery wastewater as its optimisation index. Specifically, the effects of the modified bioflocculant on the removal of total nitrogen from tannery wastewater were investigated by the single-factor optimisation experiment and orthogonal optimization experiment, and the conclusions obtained were that the optimum factors were: amphoteric starch 0.2g/L, bioflocculant 3.5g/L, initiator (0.02mol/L) 2.5mL, reaction time of the second stage 28 minutes, rotation speed of mixing 270r/min, reaction temperature 35°C, and reaction system pH5.0. The total nitrogen removal rate of 79.81% could be obtained under these optimal reaction conditions. In other words, the modified bioflocculant has an improved effect on the removal of total nitrogen. |
Note de contenu : |
- EXPERIMENTAL PROCEDURE : Materials - Preparation of seed solution - Preparation of bioflocculant - Preparation of modified bioflocculant - Preparation of simulated tannery wastewater - The removal of total nitrogen from tannery wastewater
- RESULTS AND DISCUSSION : Single-factor optimisation - The orthogonal optimisation
- Table 1 : Factor level table for preparation of HM-636 modified bioflocculant
- Table 2 : Experimental design and range analysis of modified bioflocculant
- Table 3 : Variance anlaysis of HM-636 modified bioflocculant |
En ligne : |
https://drive.google.com/file/d/1niVbC7EEr59iygXSHwBiXztIud9j7LDr/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36967 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 106, N° 1 (01-02/2022) . - p. 1-6