scholarly journals Efficiency of sugarcane bagasse inoculated with Microsporum and Alternaria species in the removal of Pb, Cr and Cd from refinery effluent

Author(s):  
Ameh LEO ◽  
Machido DA ◽  
Tijjani MB
2017 ◽  
Vol 16 (1) ◽  
pp. 121-130 ◽  
Author(s):  
Seyyed Mohammad Mousavi ◽  
Seyed Omid Rastegar ◽  
Seyed Abbas Shojaosadati ◽  
Soheila Sheibani

2018 ◽  
Vol 38 ◽  
pp. 29-38
Author(s):  
Puspa Lal Homagai ◽  
Namita Bhandari ◽  
Sahira Joshi

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1989 ◽  
Vol 24 (3) ◽  
pp. 345-354
Author(s):  
David L. Putnam

Abstract Public concern over toxic contaminants in drinking water and the environment in general has put increasing pressure on governments to develop and enforce stringent environmental regulations. An overview of developments in Canadian federal and provincial legislation related to the regulation of petroleum refinery effluent quality is provided. Current knowledge of Canadian petroleum refinery effluent quality and level of treatment is summarized.


2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Vihang S. Thite ◽  
Anuradha S. Nerurkar

Abstract After chemical pretreatment, improved amenability of agrowaste biomass for enzymatic saccharification needs an understanding of the effect exerted by pretreatments on biomass for enzymatic deconstruction. In present studies, NaOH, NH4OH and H2SO4 pretreatments effectively changed visible morphology imparting distinct fibrous appearance to sugarcane bagasse (SCB). Filtrate analysis after NaOH, NH4OH and H2SO4 pretreatments yielded release of soluble reducing sugars (SRS) in range of ~0.17–0.44%, ~0.38–0.75% and ~2.9–8.4% respectively. Gravimetric analysis of pretreated SCB (PSCB) biomass also revealed dry weight loss in range of ~25.8–44.8%, ~11.1–16.0% and ~28.3–38.0% by the three pretreatments in the same order. Release of soluble components other than SRS, majorly reported to be soluble lignins, were observed highest for NaOH followed by H2SO4 and NH4OH pretreatments. Decrease or absence of peaks attributed to lignin and loosened fibrous appearance of biomass during FTIR and SEM studies respectively further corroborated with our observations of lignin removal. Application of commercial cellulase increased raw SCB saccharification from 1.93% to 38.84%, 25.56% and 9.61% after NaOH, H2SO4 and NH4OH pretreatments. Structural changes brought by cell wall degrading enzymes were first time shown visually confirming the cell wall disintegration under brightfield, darkfield and fluorescence microscopy. The microscopic evidence and saccharification results proved that the chemical treatment valorized the SCB by making it amenable for enzymatic saccharification.


Author(s):  
Giovanni Barrera Torres ◽  
Guilhermi Dognani ◽  
Deuber Lincon da Silva Agostini ◽  
Renivaldo José dos Santos ◽  
Flávio Camargo Cabrera ◽  
...  

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