Bio-bleaching of Anthocephalus cadamba Kraft Pulp through Direct Fungal Treatment by FEQP Sequence
Journal Title: Biotechnology Journal International - Year 2015, Vol 8, Issue 4
Abstract
Aims: The study aims at mitigating pulp kappa number before bleaching to minimize pollution load. Study Design: An experimental study. Methodology: The various parameters of direct fungal (Coprinellus disseminatus MLK01) treatment (F-stage) of unbleached kraft pulp of Anthocephalus cadamba were optimized and compared with the results of enzymatically pre-bleaching. Finally, the pulp was bleached by EQP three-stage and XECEHH six stages bleaching sequences. Results: Direct fungal treatment (F-stage) delignified the Anthocephalus cadamba kraft pulp more selectively with Coprinellus disseminatus MLK01 compared to xylanase prebleached pulp from the same fungus and oxygen delignification. F-stage mitigated the unbleached pulp kappa number by 55.0% and improved brightness and viscosity by 17.3 and 7.63% respectively. Kappa number reduction and brightness improvement were 22.1 and 6.3% more in F-stage compared to XE-stage. The kappa number and pulp brightness of oxygen delignified were 0.9 and 5.2% less compared to F-stage. The viscosity of oxygen delignified pulp reduced drastically due to alkaline peeling reactions compared to XE-stage (‒26.86%) and F-stage (‒27.09%). The brightness and viscosity of XECEHH bleached pulp were 80.1% and 7.4 cps at a chlorine demand of 4.3% while FEQP bleached pulp produced brightness of 79.7% and viscosity 8.2 cps. COD and colour values in effluent generated during FEQP bleaching were 53.29% and 54.36% less compared to CEHH bleaching.
Authors and Affiliations
Dharm Dutt, Mohan Lal, Amit Kumar, Archana Gautam
Keywords
Related Articles
- EP ID EP237275
- DOI 10.9734/BBJ/2015/18845
- Views 115
- Downloads 0
Somatic Embryogenesis and Plantlet Regeneration from Protoplast Culture of Stevia rebaudiana
In order to develop a high-efficiency and reproducible regeneration protocol for Stevia protoplasts, various factors such as type and concentration of enzymes, osmoticum, incubation time, plant material type and age were...
Application of Metagenomic Study for the Detection of Diphtheria Toxin Gene of Corynebacterium diphtheriae in Patients Displaying Symptoms of Pharyngitis in Kaduna State
This study was set to detect the A and B subunit of Diphtheria toxin gene among patients with pharyngitis and to identify which of the possible biovars is endemic in Kaduna State. The result of standard collection of twe...
Thyroid Hormone Profile in Rwandan Students
Aim: To illustrate the thyroid hormone profile in young adult students at moderate altitude in Rwanda. Study Design: A population-based cross-sectional study. Place and Duration of Study: The study was conducted among he...
Potentialities of Yeast Strains to be Used as Freeze-Drying Starters for the Production of Traditional Sorghum Beer in Côte d’Ivoire
Freeze-drying is a well-known dehydration method widely used to preserve microorganisms. In order to produce freeze-dried yeast starter culture for the brewing purpose of African traditional sorghum beer, we tested toler...
Inoculum Sizes of Locally Isolated Phototrophic Bacterium on the Utilization of Palm Oil Mill Effluent
Aims: To produce Rhodobacter sphaeroides strain UMSPSB3 biomass with the reduction of chemical oxygen demand (COD) from palm oil mill effluent. Study Design: Locally isolated phototrophic bacterium with different inoculu...