Performance of copper compounds in chemical and electro oxidation treatment of sugar industry waste water: Batch reaction

2016 ◽  
Vol 65 ◽  
pp. 256-268 ◽  
Author(s):  
Omprakash Sahu
1983 ◽  
Vol 15 (8-9) ◽  
pp. 233-246 ◽  
Author(s):  
L Martensson ◽  
B Frostell

A 40 1 tank reactor, filled to 3 % (v·v−1) with a small size (5-25µm) carrier material and equipped with a mechanical mixer, was used to create a sludge bed system for anaerobic waste water treatment. Solids leaving the tank with the effluent were recycled to the tank from an external settler. Two different substrates were used, fodder molasses diluted with tap water and beet sugar factory waste water. Influent concentrations were 9.3 g COD·1−1 and 4-7 g COD·1−1 respectively, and treatment was performed at 35-37 °C. With the synthetic molasses waste water, an organic load of 5-6 kg COD·m−3·d−1 could be tolerated, with the sugar industry waste water 25 kg COD·m−3·d−1. The difference in loading capacity was ascribed to different types of sludges formed, the molasses waste water resulting in a much more bulky sludge and a lower attainable volatile suspended solids concentration. It was concluded that much care must be exercised before designing sludge bed systems for high loads with unhydrolyzed waste waters.


2012 ◽  
Vol 21 (2) ◽  
pp. 441-449 ◽  
Author(s):  
Gulab Singh ◽  
Anish Kumari ◽  
Arpana Mittal ◽  
Varsha Goel ◽  
Anita Yadav ◽  
...  

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Gulab Singh ◽  
Anish Kumari ◽  
Arpana Mittal ◽  
Anita Yadav ◽  
Neeraj K. Aggarwal

The production of polyβ-hydroxybutyrate (PHB) byBacillus subtilisNG220 was observed utilizing the sugar industry waste water supplemented with various carbon and nitrogen sources. At a growth rate of 0.14 g h−1 L−1, using sugar industry waste water was supplemented with maltose (1% w/v) and ammonium sulphate (1% w/v); the isolate produced 5.297 g/L of polyβ-hydroxybutyrate accumulating 51.8% (w/w) of biomass. The chemical nature of the polymer was confirmed with nuclear magnetic resonance, Fourier transform infrared, and GC-MS spectroscopy whereas thermal properties were monitored with differential scanning calorimetry. In biodegradability study, when PHB film of the polymer (made by traditional solvent casting technique) was subjected to degradation in various natural habitats like soil, compost, and industrial sludge, it was completely degraded after 30 days in the compost having 25% (w/w) moisture. So, the present study gives insight into dual benefits of conversion of a waste material into value added product, PHB, and waste management.


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