scholarly journals Degradation of 2,6-dimethylpyridine by Arthrobacter crystallopoietes

2020 ◽  
Author(s):  
Fatima Khasaeva ◽  
◽  
Igor Parshikov ◽  
Evgeny Zaraisky ◽  
◽  
...  

Degradation of pyridines in waste water is an important issue for chemical and pharmaceutical industries. The biodegradation of 2,6-dimethylpyridine was investigated by the bacterium Arthrobacter crystallopoietes KM-4, which resulted in the formation of three metabolites: 2,6-dimethylpyridin-3-ol, 2,6-dimethylpyridin- 3,4-diol, and 2,4-dioxopentanoic acid.

2016 ◽  
Vol 19 (1) ◽  
pp. 75-84
Author(s):  
Rayhan Hossain ◽  
Mohammad Arifur Rahman ◽  
Nargish Jahan Ara ◽  
AM Shafiqul Alam

The adsorption of levafix red (LR) dye from waste water via batch adsorption onto treated jute stick powder was investigated. Studies concerning the factors influencing the adsorption such as adsorbent dosage, pH, contact time and temperature were systematically investigated and discussed. The results revealed that the maximum removal of levafix red was ~91% from water. The kinetics data were analyzed using pseudo-first order and pseudo-second order models. It was best described by the pseudo-second order model. The adsorption equilibrium follows Langmuir isotherm. This result indicates that treated jute stick powder could be employed as low-cost alternatives to commercial activated carbon for the removal of levafix red (LR) from waste water. Rapid industrialization in Bangladesh has resulted in increased water pollution that has higher dye level. Waste water from dyeing and finishing factories is a significant source of environmental pollution. The waste water is typically characterized by high levels of COD (chemical oxygen demand) concentration, high concentration of coloring material, large amount of suspended solids, highly fluctuating pH and high temperature. Dyes may therefore present an ecotoxic hazard and introduces the potential danger of bioaccumulation that may eventually affect man by transport through the food chain. As pharmaceutical industries use lots of water and intake of this type of water might have adverse effects on human health. Therefore, water purification is extremely essential for human and animal health and dye free water may be farther purified for its proper use.Bangladesh Pharmaceutical Journal 19(1): 75-84, 2016


2013 ◽  
Vol 14 (3) ◽  
pp. 51-60
Author(s):  
Bharti Ramola ◽  
Ajay Singh

Spatial and temporal changes in the pH, electrical conductivity (EC), TDS, TSS, BOD, COD and concentration of toxic metals viz. cadmium (Cd), iron (Fe), chromium (Cr), lead (Pb), nickel (Ni), zinc (Zn) and copper (Cu) were assessed in the waste water contaminated with untreated or inadequately pretreated industrial effluents from pharmaceutical industries located in Selaqui area and sugar industry and distillery located in Doiwala area of Dehradun. Four effluent samples A, B, C, D collected from manufacturing and processing industries located in the study area and two ground water samples E1 & E2 contiguous to Selaqui industrial hub and Doiwala industrial stretch respectively, were analyzed  using standard physico-chemical methods. In order to delimit the temporal changes in parameters, samples were collected in three batches at three consecutive seasons of a year. Analyses at STP condition revealed that pH values of ground water samples remained fairly unchanged at 7.01 + 0.14 & 6.98 + 0.04 for E1 & E2 respectively, for two regional variations and three seasonal variations. EC (mmho/cm) varied non-uniformly with highest value of 0.479 observed for sample A in batch 1 whereas lowest value of 0.122 recorded for sample D in batch 3. TDS in effluents of distillery and sugar industry were found to be 3-6 folds higher than the same for effluents from pharmaceutical industries across all seasons. BOD and COD values for the effluents of distillery and sugar industries were recorded unexpectedly higher than corresponding values in effluents from pharmaceutical industries in all the three batches. TSS was very high in the range of 1500 to 4500 mg/l in all the effluent samples except the ground water samples. Highest concentration of heavy metal detected was iron with concentration of 10.80 mg/l. Cr, Pb, Cd and Ni were found to be above the permissible limit recommended by WHO standards. A plausible analysis is made to interpret the wide range variation of the parameters in the light of spatial and temporal change aspects and necessary pretreatment measures to bring down the magnitude of contamination within consent level are suggested.


2014 ◽  
Vol 27 (2) ◽  
pp. 46-49
Author(s):  
Sadia Afreen ◽  
Smita Paul

The purpose of the work is to investigate the scenario of waste water treatment in pharmaceutical industries in Bangladesh and find some advanced steps to add in the existing ETP with economic considerations. For this, a renowned pharmaceutical industry in Bangladesh has been chosen that represents the feature of ETP in Bangladesh. Generally industries, including pharmaceuticals, discharge their waste water to the environment after treatment; the objective is to show some beneficial ways to use/reuse the treated water, applicable for the pharmaceutical industries in Bangladesh. Sample has been provided by ACI Pharmaceuticals Ltd. and different parameters of their supplied samples (both from inlet and outlet) have been measured to check whether they suit with the present standards of drinking water and/or other standards of industrial discharged water in context of Bangladesh. From the experiment it is found that the values of the different parameters of the treated water of the chosen industry can be considered to be favorable in comparison with the present standards of waste water regulations in Bangladesh. The present investigation also shows that if an ion exchange unit or membrane separation technology is incorporated after filtration, the waste water can be made potable after treatment by implementing some advanced technology DOI: http://dx.doi.org/10.3329/jce.v27i2.17801 Journal of Chemical Engineering, IEB Vol. ChE. 27, No. 2, December 2012: 46-49


2019 ◽  
Vol 9 (4-s) ◽  
pp. 111-117
Author(s):  
A Mahilarasi ◽  
Kannaiyan Jaianand ◽  
K Rameshkumar ◽  
Paulraj Balaji ◽  
Veeramani Veeramanikandan

The present study was conducted for auto mobile industry, food industry and pharmaceutical industries waste water treatment using effective microbial consortium. The effective microorganisms like Acinetobacter pittii, Escherichia coli, Fictibacillus nanhaiensis, Lysinibacillus xylanilyticus and Planococcus maritimus were isolated from respective sources. The microbial consortium was formulated using molasses as medium at pH 3.8 and incubated at 37°C for 3 days. The results showed that the formulated consortium was efficient for industrial waste water treatment and thereby it reduced the environmental impact. Keywords: Bio-remediation, Microbial consortium, Industrial waste water, Heavy metals


Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
K Vougogiannopoulou ◽  
H Pratsinis ◽  
R Grougnet ◽  
M Halabalaki ◽  
D Kletsas ◽  
...  

2020 ◽  
Vol 6 (2) ◽  
pp. 147-153
Author(s):  
Muhamad Yusup ◽  
Po. Abas Sunarya ◽  
Krisandi Aprilyanto

System The process of counting and storing in a manual water reservoir analysis has a high percentage of error rate compared to an automated system. In a company industry, especially in the WWT (Waste Water Treatment) section, it has several reservoir tanks as stock which are still counted manually. The ultrasonic sensor is placed at the top of the WWT tank in a hanging position. Basically, to measure the volume in a tank only variable height is always changing. So by utilizing the function of the ultrasonic sensor and also the tube volume formula, the stored AIR volume can be monitored in real time based on IoT using the Blynk application. From the sensor, height data is obtained which then the formula is processed by Arduino Wemos and then information is sent to the MySQL database server via the WIFI network.


2018 ◽  
Vol 44 (4) ◽  
pp. 515-520
Author(s):  
M Kazemi

Carum copticum L. comprises several relevant species for food, cosmetic, perfumery and pharmaceutical industries. GC/MS analysis of the enential oil of C. copticum revealed γ- terpinene as a major component of C. copticum, with its contribution of 33.85%. Essential oils (EOs) exhibited a significant antimicrobial activity against all tested microbial strains. In addition, the C. copticum oil demonstrated the highest DPPH radical scavenging activity. These results clearly show the antimicrobial and antioxidant effects of the plant essential oil.


Sign in / Sign up

Export Citation Format

Share Document