Wastewater treatment in molasses-based alcohol distilleries for cod and color removal: a review

Virtually all the known physicochemical and biological techniques have been explored for treatment of extremely recalcitrant dye wastewater; none, however, has emerged as a panacea. A single universally applicable end-of-pipe solution appears to be unrealistic, and combination of appropriate techniques is deemed imperative to devise technically and economically feasible options. An in-depth evaluation of wide range of potential hybrid technologies delineated in literature along with plausible analyses of available cost information has been furnished. In addition to underscoring the indispensability of hybrid technologies, this article also endorses the inclusion of energy and water reuse plan within the treatment scheme, and accordingly proposes a conceptual hybrid dye wastewater treatment system.

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Hybrid Treatment Systems for Dye Wastewater

Hybrid treatment systems for dye wastewater

Distillery spent wash: treatment technologies and potential applications.

Biodegradation of phenol by Pseudomonas putida immobilized in polyvinyl alcohol (PVA) gel.

Biodegradation of phenolic industrial wastewater in a fluidized bed bioreactor with immobilized cells of Pseudomonas putida.

Chemical oxidation of wastewater from molasses fermentation with ozone.

Biodegradation of phenol in a continuous process: comparative study of stirred tank and fluidized-bed bioreactors.

Electrochemical study of copper and iron compounds in the solid state by using voltammetry of immobilized microparticles: application to copper ferrite characterization

Continuous decolourisation of wastewater from molasses fermentation using mycelium of Trametes versicolor in pellets shape was performed in an airlift bioreactor (semi-pilot scale) with the aim of operating steadily for a long period, maintaining the colour removal activity. The influences of influent flow and glucose feed rate were tested. Induction of peroxidases secretion by Mn2 + addition was also studied. The efficiency of the decolourisation process was followed by monitoring colour and enzymatic activities. The experimental results showed that continuous decolourisation in an airlift bioreactor can be considered a suitable alternative for treating molasses fermentation wastewater. A colour removal yield around 60% remained practically constant during 23 days under continuous operation. Laccase was found to be the main enzyme secreted by the strain, being responsible for the decolourisation process. Mn2 + addition was not likely to induct manganese-dependent peroxidase secretion.

M. T. García

Papers

Biodegradation of phenolic industrial wastewater in a fluidized bed bioreactor with immobilized cells of Pseudomonas putida.

Chemical oxidation of wastewater from molasses fermentation with ozone.

Biodegradation of phenol in a continuous process: comparative study of stirred tank and fluidized-bed bioreactors.

Electrochemical study of copper and iron compounds in the solid state by using voltammetry of immobilized microparticles: application to copper ferrite characterization

Biological decolourisation of wastewater from molasses fermentation by Trametes versicolor in an airlift reactor.