In the present study, municipal secondary sludge and purified glycerol (obtained after acid treatment of crude glycerol) were used together for lipid production using intermittent feeding strategy. Intermittent strategy (sludge SS 30 g/L) resulted in a higher biomass (54.99 concentration (25.35 at 96 h when compared to 35 g/L single or control (45.67 & 19.16 lipid). Moreover, significantly redu...

Expectation for renewable energy is increasing due to environmental pollution such as fossil fuel depletion, CO2 emission, and harmful gases. Therefore, in this study, extracted sugars of microalgae, which cause algal blooms crude glycerol, a biodiesel industry byproduct, were used simultaneously produce 2,3-BDO. The 2,3-BDO production using only was about 4.8 g/L at 18 h, the both sugar glycer...

Crude glycerol (CG) is an abundantly available and cheap by-product from biodiesel production. Value-added applications for CG are highly wanted by industry and several processes such as the use of CG for enhanced oil recovery have been proposed. The aim of this study was to evaluate the sulfide production of sulfate-reducing bacteria (SRB) indigenous to oil reservoirs using CG as substrate. Th...

Given the large amount of crude glycerol formed as a by-product in the biodiesel industries and the concomitant decrease in its overall market price, there is a need to add extra value to this biorefinery side stream. Upgrading can be achieved by new biotechnologies dealing with recovery and conversion of glycerol present in wastewaters into value-added products, aiming at a zero-waste policy a...

The term ‘bio-diesel’ is used to describe the methyl or sometimes ethyl esters produced from oilseed crops. Every 10 gallons of biodiesel produced generates about 7.6 lb of crude glycerol. According to the National Biodiesel Board, the production of biodiesel in the U.S. over the next decade is expected to grow (http:// www.biodiesel.org/). Current annual production is 395 million gallons and p...

Crossbred pigs (n = 216; BW = 31.3 ± 1.8 kg) were used to determine the effects of long- and short-term feeding of crude glycerol on growth performance, carcass traits, and pork quality of grow-finish pigs. Pigs were blocked by initial BW, and pens within blocks were assigned randomly to 1 of 3 dietary treatments (24 pens; 9 pigs/pen). Dietary treatments were control, a corn-soybean meal-based ...

Abstract Glycerol fermentation for 1,3-propanediol (1,3-PDO) production was studied in an anaerobic up-flow reactor with biomass attached to silicone support. A mixed microbial culture activated perform the biofilm formation and attachment a hose prior operation. The operated over 362 days divided into two phases (P). In P1 P2, continuously fed pure crude glycerol, respectively. operation consi...

Glycerol, a water-soluble polyol, is currently used in wide variety of markets, e.g. as sweetener drinks, an additive the food and cosmetics industry, or antifreeze agent, to name few. The blooming biodiesel production has created excess supply glycerol by-product. Researchers all around world are actively exploring strategies utilize this cheap abundantly available biobased molecule. To date, ...