Anaerobic treatment of distillery spent wash – A study on upflow anaerobic fixed film bioreactor

Acharya, Bhavik K.; Mohana, Sarayu; Madamwar, Datta

doi:10.1016/j.biortech.2007.06.060

Cited by 134 publications

(56 citation statements)

References 14 publications

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“…Generally, distillery spent wash is classified as high-strength industrial wastewater and environmentally considered as 'red' category waste, due to its high content of organic matter with very low degradability. For instance, a COD range of 110 000-190 000 mg/L) and BOD range of 50 000-60 000 mg/L for molasses spent wash has been reported (Acharya et al, 2008). Another peculiar feature of the spent wash is its colour, which is deep dark brown.…”

Section: Introductionmentioning

confidence: 99%

COD and colour removal from molasses spent wash using activated carbon produced from bagasse fly ash of Matahara sugar factory, Oromiya region, Ethiopia

Nure¹,

Shibeshi²,

Leta³

et al. 2017

WSA

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The aim of this study was to investigate the removal of chemical oxygen demand (COD) and colour from a melanoidin solution using activated carbon produced from bagasse fly ash (BFA). Melanoidins are heterogeneous polymers and major contributors to the dark brown colour of molasses spent wash, which is an extensive cause of environment pollution. The surface area of the BFA was determined as 160.9 ± 2.8m²/g with 90% of particle less than 156.8 µm in size. Characterization of the BFA by Fourier transform infrared spectroscopy (FTIR) showed the presence of hydroxyl and carbonyl functional groups, whereas X-ray diffraction analysis indicated its amorphous nature. Moreover, scanning electron microscopy analysis showed a heterogeneous and irregular shape of pores. Among the adsorption isotherm models analysed, the Freundlich model fitted best to the experimental data, indicating a maximum adsorptive capacity of 124.80 mg/g. The removal of COD and colour from a melanoidin solution with this activated carbon was carried out using an experimental design taking 4 factors into account. These were adsorbent dose, contact time, pH and initial COD concentration, with removal of COD and colour as response variables. COD reduction was influenced by initial COD concentration whereas colour removal was dominated by contact time, which was in line with the findings of principal component analysis . The maximum COD removal recorded was 61.6% at the optimum condition of adsorbent dose of 4 g in 100 mL, contact time of 4 h, pH 8 and initial COD concentration 6 000 mg/L, whereas the decolourization of melanoidin solution was 64% at adsorbent dose of 4 g, contact time 4 h, pH 3 and initial COD concentration 6 000 mg/L. Hence, activated BFA is a promising option for simultaneous removal of COD and colour from molasses spent wash under the stated conditions.

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Section: Introductionmentioning

confidence: 99%

COD and colour removal from molasses spent wash using activated carbon produced from bagasse fly ash of Matahara sugar factory, Oromiya region, Ethiopia

Nure¹,

Shibeshi²,

Leta³

et al. 2017

WSA

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“…The total and reducing sugar content of the cane molasses spent wash was very high when compared with the palmyrah-spent wash. However, the total nitrogen content was much higher in the local spent wash than that in cane molasses spent wash 1,14 . The high level of the BOD (20,000 to 25,000 mgL -1 ) (personal communication, from Palmyrah distilleries) of the local spent wash may be due to yeast residues that remain in the wash following distillation.…”

Section: Resultsmentioning

confidence: 83%

Palmyrah Distillery Spent Wash for Ethanol Production by a Thermotolerant Saccharomyces cerevisiae S1 at 40°C

Balakumar

Arasaratnam²

2011

Journal of the Institute of Brewing

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J. Inst. Brew. 117(3), 451-455, 2011Palmyrah distillery spent wash was used as an alternative to the predefined PYN medium (peptone, yeast extract, magnesium sulphate, potassium hydrogen phosphate and ammonium sulphate). In this study, the focus was on the utilization of spent wash from Sri Lankan palmyrah based distilleries to reduce the biological oxygen demand (BOD). To utilise the spent wash, it was supplemented with glucose and different nitrogen sources. Replacing PYN medium with spent wash and the increase in the glucose concentration led to a decrease in ethanol production. Hydrolysis of spent wash with a commercial protease (Neutrase) and supplementation with 200 gL -1 glucose produced 73.4 gL -1 ethanol. Among the different nitrogen sources supplemented 4.6 gL -1 (NH 4 ) 2 SO 4 increased ethanol production to 92.5 gL -1 indicating that the spent wash could be economically used to produce ethanol, while decreasing the BOD from 25,000 to 4,000 mgL -1 .

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“…This type of reactor can recover very quickly after a period of starvation (Rajeshwari et al 2000). In this reactor, glass bead, red drain clay, polyurethane foam, waste tyre rubber (Borja et al 1996), splintered glass (Perez et al 1997), polyacryl nitrile acryl amide, corrugated plastic (Garcia et al 1995), coconut coir, charcoal and nylon fibre can be used as packing material in the treatment of industrial wastewater as a support media, which enhances the reactor performance (Acharya et al 2008). This system ensures effective contact with anaerobic biomass in suspended form with organic load to achieve high organic load removal.…”

Section: Anaerobic Fixed Film Reactor (Affr)mentioning

confidence: 99%

A review on characterization and bioremediation of pharmaceutical industries’ wastewater: an Indian perspective

Rana¹,

Singh²,

Kandari³

et al. 2014

Appl Water Sci

146

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During the past few decades, pharmaceutical industries have registered a quantum jump contributing to high economic growth, but simultaneously it has also given rise to severe environmental pollution. Untreated or allegedly treated pharmaceutical industrial wastewater (PIWW) creates a need for time to time assessment and characterization of discharged wastewater as per the standards provided by the regulatory authorities. To control environmental pollution, pharmaceutical industries use different treatment plans to treat and reuse wastewater. The characterization of PIWW using advanced and coupled techniques has progressed to a much advanced level, but in view of new developments in drug manufacture for emerging diseases and the complexities associated with them, better sophisticated instrumentation and methods of treatment are warranted. The bioremediation process to treat PIWW has undergone more intense investigation in recent decade. This results in the complete mineralization of pharmaceutical industries' wastewater and no waste product is obtained. Moreover, high efficiency and low operation cost prove it to be an effective tool for the treatment of PIWW. The present review focuses on the characterization as well as bioremediation aspects of PIWW.

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Anaerobic treatment of distillery spent wash – A study on upflow anaerobic fixed film bioreactor

Cited by 134 publications

References 14 publications

COD and colour removal from molasses spent wash using activated carbon produced from bagasse fly ash of Matahara sugar factory, Oromiya region, Ethiopia

COD and colour removal from molasses spent wash using activated carbon produced from bagasse fly ash of Matahara sugar factory, Oromiya region, Ethiopia

Palmyrah Distillery Spent Wash for Ethanol Production by a Thermotolerant Saccharomyces cerevisiae S1 at 40°C

A review on characterization and bioremediation of pharmaceutical industries’ wastewater: an Indian perspective

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