Restructuring BOD : COD Ratio of Dairy Milk Industrial Wastewaters in BOD Analysis by Formulating a Specific Microbial Seed

Dhall, Purnima; Siddiqi, Tariq Omar; Ahmad, Altaf; Kumar, Ram; Kumar, Anil

doi:10.1100/2012/105712

Cited by 15 publications

(7 citation statements)

References 11 publications

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“…Pseudomonas and Bacillus species with high-fat degradation effectiveness had been isolated from wastewater sources (Loperena et al 2009). While the former genera were mainly associated with xenobiotic cleanup of industrial wastes (Golovleva et al 1992), both were proposed to be used to improve wastewater treatment process (Dhall et al 2012;Loperena et al 2006Loperena et al , 2009. Consistently, strains G13, G20, G21 and G24, isolated from a commercial product (Glensol 3901), belong to Bacillus genera.…”

Section: Discussionmentioning

confidence: 95%

Genome mining of lipolytic exoenzymes from Bacillus safensis S9 and Pseudomonas alcaliphila ED1 isolated from a dairy wastewater lagoon

et al. 2016

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Dairy production plants produce highly polluted wastewaters rich in organic molecules such as lactose, proteins and fats. Fats generally lead to low overall performance of the treatment system. In this study, a wastewater dairy lagoon was used as microbial source and different screening strategies were conducted to select 58 lipolytic microorganisms. Exoenzymes and RAPD analyses revealed genetic and phenotypic diversity among isolates. Bacillus safensis, Pseudomonas alcaliphila and the potential pathogens, B. cereus, Aeromonas and Acinetobacter were identified by 16S-rRNA, gyrA, oprI and/or oprL sequence analyses. Five out of 10 selected isolates produced lipolytic enzymes and grew in dairy wastewater. Based on these abilities and their safety, B. safensis S9 and P. alcaliphila ED1 were selected and their genome sequences determined. The genome of strain S9 and ED1 consisted of 3,794,315 and 5,239,535 bp and encoded for 3990 and 4844 genes, respectively. Putative extracellular enzymes with lipolytic (12 and 16), proteolytic (20) or hydrolytic (10 and 15) activity were identified for S9 and ED1 strains, respectively. These bacteria also encoded other technological relevant proteins such as amylases, proteases, glucanases, xylanases and pectate lyases.

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Section: Discussionmentioning

confidence: 95%

Genome mining of lipolytic exoenzymes from Bacillus safensis S9 and Pseudomonas alcaliphila ED1 isolated from a dairy wastewater lagoon

et al. 2016

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“…They usually contain large fraction of organic compounds that act as a substrate for microorganisms when they released into water resources. Dairy wastewater is of great concern because of containing high-carbonaceous and nitrogenous compounds (20,21).…”

Section: Discussionmentioning

confidence: 99%

The Effects of Temperature on the Performance of Anaerobic Sequencing Batch Reactor in the Treatment of Synthetic Dairy Wastewater

Dehghani

Rezaei²,

Shamsedini

et al. 2014

Jundishapur J Health Sci

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Background: Low-cost anaerobic sequencing batch reactor (ASBR), which is widely used for controlling high-organic wastewater, is an effective method to remove chemical oxygen demand (COD). Objectives: The main objectives was evaluating the feasibility of using ASBR in the treatment of synthetic dairy wastewater, determining its removal efficiency, and assessing the effect of temperature on operating conditions to remove the COD effectively. Materials and Methods: The present study was conducted at a pilot scale system. Experiments were performed using a 20-L reactor and two storage tanks with the volume of 10 L. The effect of the variation of temperatures (20°C-35°C) and the effect of running cycles (10 runs) on the efficiency of COD removal by the ASBR process were investigated. Four heaters were used to produce the heat of the reactor. At first, raw wastewater in the primary tank was heated to the desirable temperature and then three more heaters continuously produce the heat in the reactor to operate system at the constant operating temperature in each run. Data were analyzed by SPSS 16through Pearson's correlation coefficient to analyze the association between these parameters. Results: The maximum COD removal rate was 89.7% at the organic loading of 4.5 g/L per day in a 24-hour cycle condition with reaction time of 21 hours and 30 minutes. The maximum biochemical oxygen demand (BOD5) removal rate was 91% and occurred at the first run. The amount of COD removal efficiency was higher at the first run in comparison to the third cycle (27.5%). BOD5 removal efficiency decreased up to 24.4% due to the drop of temperature in the reactor. Pearson correlation analysis showed a significant association between the temperature and the removal efficiencies (P < 0.01). Conclusions:The results of this study indicated that any decrease in the temperature caused reduction in system efficiency of removing BOD5 and COD. Temperature of 35°C is optimal for the removal of high organic load wastewater. ASBR can be used as an effective tool to treat dairy industry wastewater.

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“…The investigators identified a microorganism that produced comparable BOD response profiles by two methods of BOD determination, the conventional bioassay and using BOD sensors. In a study, Dhall et al [10], compared BOD to COD ratios of inoculum of an isolated consortium of microbes to the BOD to COD ratios of a commercially sold seed. The study yielded BOD to COD ratios of O.5 -0.6 for the commercial seed and 0.78 -0.8 for the isolated bacteria strains.…”

Section: Introductionmentioning

confidence: 99%

“…They concluded that BOD to COD ratios with the isolated consortium were more significant. Furthermore, the researchers [10] examined the effect of using a specific microbial consortium compared to commercial seeding material (BODSEED) on the BOD of dairy wastewater. They isolated bacterial strains from 5 different sources and screened by the conventional BOD method.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of two commercial inoculates and a probiotic food additive as seeds in BOD testing

S¹,

Adeleye²,

H³

2020

World J. Adv. Res. Rev.

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Five-day seeded Biochemical oxygen demand (BOD) tests using Glucose-Glutamic acid (GGA) substrate were carried out. The seeds used are a regular seed an NX seed and an over-the-counter food supplement commonly referred to as a probiotic. The purpose was to determine if seed type influenced 5-day BOD test results. The NX seed contained a chemical formulation designed to inhibit nitrification. Test results indicate that 5-day BOD varied significantly with each seed. Micrographs of stained samples prepared from cultures of the three seeds identified Gram-stain negative rods present in all the three inoculates.

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Restructuring BOD : COD Ratio of Dairy Milk Industrial Wastewaters in BOD Analysis by Formulating a Specific Microbial Seed

Cited by 15 publications

References 11 publications

Genome mining of lipolytic exoenzymes from Bacillus safensis S9 and Pseudomonas alcaliphila ED1 isolated from a dairy wastewater lagoon

Genome mining of lipolytic exoenzymes from Bacillus safensis S9 and Pseudomonas alcaliphila ED1 isolated from a dairy wastewater lagoon

The Effects of Temperature on the Performance of Anaerobic Sequencing Batch Reactor in the Treatment of Synthetic Dairy Wastewater

Evaluation of two commercial inoculates and a probiotic food additive as seeds in BOD testing

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