Submerged nanofiltration of biologically treated molasses fermentation wastewater for the removal of melanoidins

Liu, Meihong; Zhu, Huiwen; Dong, Bingyan; Zheng, Yinping; Yu, Shuili; Gao, Congjie

doi:10.1016/j.cej.2013.02.107

Cited by 37 publications

(12 citation statements)

References 35 publications

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“…Moreover, the effluent after anaerobic treatment (methanogenesis) retain dark-brown colour due to complexation of organic and inorganic pollutants present in spent wash (Wolfrom et al 1953). In addition, the various physico-chemical methods, i.e., flocculation, nanofiltration, coagulation, electro-flotation, adsorption, catalytic thermolysis, oxidation, and ozonation have also been applied for elimination of melanoidins from distillery effluent (Liu et al 2013;Liang et al 2009;Chaudhari et al 2005Chaudhari et al , 2007Onyango et al 2011). However, these methods were found not applicable at large scale due to high operation cost, high consumption of chemicals and generation of huge amount of toxic sludge, and other secondary pollutants.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of molasses-melanoidin decolourisation by potential bacterial consortium discharged in distillery effluent

2018

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The extracted sugarcane molasses-melanoidins showed the presence of Mn (8.20), Cr (2.97), Zn (16.61), Cu (2.55), Fe (373.95), Pb (2.59), and Ni (4.18 mg L) along with mixture of other organic compounds which have endocrine-disrupting chemicals (EDCs) properties. A consortium of aerobic bacteria comprising (KU321273), (KU726954), (KU726955), and (KU726957) showed the optimum decolourisation of molasses-melanoidins up to 81% through co-metabolism in the presence of glucose (1.0%) and peptone (0.2%) as a carbon and nitrogen source, respectively. The absorption spectrum scanning by UV-visible spectrophotometer between 200 and 700 nm revealed reductions of absorption spectrum of organic compounds present in bacterial degraded sample of melanoidins in range of 200-450 nm compared to control. The degradation and decolourisation of melanoidins by bacterial consortium was noted by induction of manganese peroxidase and laccase activities in sample supernatant. Furthermore, the TLC and HPLC analysis of bacterial decolourised melanoidins also showed degradation and reduction of absorption peak at (295 nm), respectively. Furthermore, FT-IR and GC-MS analysis also showed the change of functional group and disappearance of ion peaks. This indicated the degradation and depolymerisation of melanoidins and cleavage of C=C, C=O and C≡N conjugated bonds which resulted in reduction of colour. The metabolic analysis also showed the disappearance of some organic compounds and generation of new metabolites. Furthermore, the seed germination test using L. showed toxicity reduction in decolourized effluent.

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Section: Introductionmentioning

confidence: 99%

Evaluation of molasses-melanoidin decolourisation by potential bacterial consortium discharged in distillery effluent

2018

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“…Water recovery from distillery 424 wastewater over 24h study period was higher with FO (70%) than reported for RO 425 (35-45%)(Nataraj et al, 2006). In another study, nanofiltration (NF) at 5 bar M A N U S C R I P TA C C E P T E D ACCEPTED MANUSCRIPT19 transmembrane pressure could only produce a water permeability of 2.66 L/m 2 h bar 427 with serious reversible and irreversible fouling(Liu et al, 2013). Organic fouling in 428 FO is mostly reversible and amenable to physical cleaning; it can be easily controlled 429 by optimizing the feed flow rate (Lee et al, 2010).…”

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confidence: 91%

Concentrating molasses distillery wastewater using biomimetic forward osmosis (FO) membranes

et al. 2018

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Treatment of sugarcane molasses distillery wastewater is challenging due to the presence of complex phenolic compounds (melanoidins and polyphenols) having antioxidant properties. Due to zero liquid discharge regulations, Indian distilleries continue to explore effective treatment options. This work examines the concentration of distillery wastewater by forward osmosis (FO) using aquaporin biomimetic membranes and magnesium chloride hexahydrate (MgCl.6HO) as draw solution. The operational parameters viz. feed solution and draw solution flow rate and draw solution concentration were optimized using 10% v/v melanoidins model feed solution. This was followed by trials with distillery wastewater. Under the conditions of this work, feed and draw flow rates of 1 L/min and draw solution concentration of 2M MgCl.6HO for melanoidins model solution and 3M MgCl.6HO for distillery wastewater were optimal for maximum rejection. Rejection of 90% melanoidins, 96% antioxidant activity and 84% COD was obtained with melanoidins model feed, with a corresponding water flux of 6.3 L/mh. With as-received distillery wastewater, the rejection was similar (85-90%) to the melanoidins solution, but the water flux was lower (2.8 L/mh). Water recovery from distillery wastewater over 24 h study period was higher with FO (70%) than reported for RO (35-45%). Repeated use of the FO membrane over five consecutive 24 h cycles with fresh feed and draw solutions and periodic cleaning showed consistent average water flux and rejection of the feed constituents.

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“…In fact, membranes technologies provide an important solution in environmental fields such as pollution reduction and water reuse, recycling valuable components from the waste streams [12]. In literature, some study has been found dealing with membrane treatment process for biologically treated baker's yeast wastewater [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Pre-treatment of Yeast Production Wastewater and Hydrogen Production Based on MF-CSTR Process

Ding¹,

Jiang²,

Liu³

2016

IJEMA

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Abstract:Wastewater produced during the yeast production has high COD concentration, chroma and turbidity and it is difficult to dissolve the water, which has constrained the development of yeast industry. This thesis researched the process of pretreatment of wastewater from yeast production wastewater. Membrane filtering was introduced to hold back the yeast existed in the wastewater. The filtered water was sent to produce hydrogen in anaerobic environment, while the residue was sent to extract protein. The filtering process utilized the PVDF membrane with an aperture of 0.2µm can hold back the yeast sufficiently. According to the transmembrane pressure, 10days worked as a period to clean the membrane at the aeration of 0.15m 3 ·h -1. The cost as well as the profit is compared, which showed that for a yeast factory which had a daily wastewater production of 1 000m 3 , the profit could be as high as 1 090 yuan·d -1. Intermittent shake flask tests were conducted to study the difference of hydrogen production between direct anaerobic digestion and anaerobic digestion after filtration. When influent pH was 5.00, the hydrogen percentage of filtered group was 49.69%, which exceeded the group without filtration by 20.34%. The HRT and OLR were tested for CSTR to get the highest hydrogen production through anaerobic fermentation of the filtered yeast industry wastewater. Results showed that, when HRT was 8h and OLR was 24kgCOD·m , the system can get the highest biohydrogen production rate at 13.2L·d . This test suggested that MF-CSTR pretreatment process can simultaneously treat yeast industry wastewater effectively and realize resource recovery from yeast protein and energy recovery and utilization from hydrogen, which provides the theoretical foundation for the treatment and resource utilization from yeast industry wastewater.

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Submerged nanofiltration of biologically treated molasses fermentation wastewater for the removal of melanoidins

Cited by 37 publications

References 35 publications

Evaluation of molasses-melanoidin decolourisation by potential bacterial consortium discharged in distillery effluent

Evaluation of molasses-melanoidin decolourisation by potential bacterial consortium discharged in distillery effluent

Concentrating molasses distillery wastewater using biomimetic forward osmosis (FO) membranes

Pre-treatment of Yeast Production Wastewater and Hydrogen Production Based on MF-CSTR Process

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