scholarly journals Review Analisis Teknologi Degradasi Limbah Minyak Bumi untuk Mengurangi Pencemaran Air Laut di Indonesia

2018 ◽  
Vol 3 (2) ◽  
pp. 80 ◽  
Author(s):  
Iffat Ganjar Fadhila Prakasita ◽  
Ria Wulansarie
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Nonionic Surfactant ◽  
Oil Spills ◽  
Tween 80 ◽  
Chemical Degradation ◽  
Biological Degradation ◽  
Bacterial Concentration ◽  
Brij 35 ◽  
The Stability ◽  
Petroleum Emulsion

Penentuan metode degradasi minyak bumi yang tepat sangat diperlukan untuk mengatasi pencemaran tumpahan minyak bumi khususnya di air laut Indonesia. Metode degradasi limbah minyak bumi yang digunakan adalah metode degradasi secara kimia dan biologi yaitu menggunakan surfaktan nonionik (Tween 80 dan Brij 35) dan bioremediasi menggunakan bakteri Pseudomonas aeruginosa.Variabel yang digunakan pada metode degradasi kimia dengan surfaktan nonionik adalah variasi konsentrasi 0.0000, 0.0025, 0.0050, 0.0075, 0.0100, 0.0125, 0.0150, 0.0175, 0.0200, 0.0225, 0.0250, 0.0275, 0.0300, 0.0350, 0.0400 % (v/v) dan variasi pengadukan untuk menguji stabilitas emulsi minyak bumi dengan laju 100, 120, dan 140 rpm selama 1 jam. Variabel yang digunakan pada metode bioremediasi adalah konsentrasi penambahan mikroba Pseudomonas aeruginosa sebanyak 0%; 1%; 3% (v/v), konsentrasi cemaran minyak bumi 1000 ppm dan 1500 ppm serta media aerasi dan media tanpa aerasi. Hasil degradasi minyak bumi terbaik didapatkan pada metode bioremeidasi menggunakan Pseudomonas aeruginosa dengan konsentrasi bakteri sebanyak 3% (v/v) pada media teraerasi dan konsentrasi cemaran minyak 1000 ppm dengan % biodegradasi TPH yang dicapai sebesar 100% dalam waktu 21 hari.ABSTRACTDetermination of appropriate petroleum degradation method is needed to overcome the contamination of oil spills, especially in Indonesia's seawater. The method of degradation of petroleum waste used is chemical and biological degradation method using nonionic surfactant (Tween 80 and Brij 35) and bioremediation using Pseudomonas aeruginosa bacteria. Variable used in chemical degradation method with nonionic surfactant is concentration variation 0.0000; 0.0025; 0.0050; 0.0075; 0.0100; 0.0125; 0.0150; 0.0175; 0.0200; 0.0225; 0.0250; 0.0275; 0.0300; 0.0350, 0.0400% (v / v) and stirring variations to test the stability of petroleum emulsion at rates 100, 120, and 140 rpm for 1 hour. The variable used in the bioremediation method is the concentration of Pseudomonas aeruginosa addition of 0%; 1%; 3% (v/v), the concentration of petroleum contamination 1000 ppm and 1500 ppm also aeration medium and aeration non medium. The best petroleum degradation results were obtained in bioremediation method using Pseudomonas aeruginosa with bacterial concentration of 3% (v / v) in aerated media and concentration of 1000 ppm oil contamination with TPH biodegradation achieved at 100% within 21 days.

Micellar-enhanced ultrafiltration of copper ions using sodium dodecyl sulfate and its mixture with Brij 35, Tween 80 and Triton X-100

2013 ◽  
Vol 67 (10) ◽  
pp. 2154-2159 ◽  
Author(s):  
Baowei Zhao ◽  
Ruirui Li ◽  
Jinkui Zhong ◽  
Li Zhang
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Nonionic Surfactant ◽  
Sodium Dodecyl ◽  
Tween 80 ◽  
Molar Ratio ◽  
Permeate Flux ◽  
Brij 35 ◽  
Dodecyl Sulfate ◽  
Micellar Enhanced Ultrafiltration ◽  
Triton X

The performance of copper ion removal using sodium dodecyl sulfate (SDS) and its mixtures with Brij 35, Tween 80 (TW80) and Triton X-100 (TX100) by micellar-enhanced ultrafiltration (MEUF) was investigated. The effects of the molar ratio of nonionic surfactant to SDS on the critical micelle concentration (CMC) of SDS/Brij 35, SDS/TW80 and SDS/TX100, the removal efficiency of Cu2+, the residual concentration of SDS in the permeate solution and the permeate flux were tested. The results showed that the CMCs of the mixed surfactants were sharply less than that of pure SDS. The removal efficiencies of Cu2+ were up to the maximum values 98.3 and 95.8% when the molar ratios of Brij 35 and TW80 to SDS were 0.3, and it was 93.5% given 0.7 molar ratio of TX100 to SDS. The concentration of SDS in the permeate decreased dramatically with the addition of nonionic surfactant, and the permeate flux decreased slightly as the molar ratio increased. Compared with the performance by single SDS, the mixed SDS/Brij 35, SDS/TW80 and SDS/TX100 at an optimum composition could result in not only higher rejection of Cu2+ but also much less dosage of surfactant and concentration of SDS in the permeate.

scholarly journals Structural investigation and application of Tween 80-choline chloride self-assemblies as osmotic agent for water desalination

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yasamin Bide ◽  
Marzieh Arab Fashapoyeh ◽  
Soheila Shokrollahzadeh
Keyword(s):  
Nonionic Surfactant ◽  
Choline Chloride ◽  
Water Flux ◽  
Forward Osmosis ◽  
Tween 80 ◽  
Average Diameter ◽  
Feed Solution ◽  
Water Desalination ◽  
Draw Solution ◽  
Osmotic Agent

AbstractForward osmosis (FO) process has been extensively considered as a potential technology that could minimize the problems of traditional water desalination processes. Finding an appropriate osmotic agent is an important concern in the FO process. For the first time, a nonionic surfactant-based draw solution was introduced using self-assemblies of Tween 80 and choline chloride. The addition of choline chloride to Tween 80 led to micelles formation with an average diameter of 11.03 nm. The 1H NMR spectra exhibited that all groups of Tween 80 were interacted with choline chloride by hydrogen bond and Van der Waals’ force. The influence of adding choline chloride to Tween 80 and the micellization on its osmotic activity was investigated. Despite the less activity of single components, the average water flux of 14.29 L m‒2 h‒1 was obtained using 0.15 M of Tween 80-choline chloride self-assembly as draw solution in the FO process with DI water feed solution. Moreover, various concentrations of NaCl aqueous solutions were examined as feed solution. This report proposed a possible preparation of nonionic surfactant-based draw solutions using choline chloride additive with enhanced osmotic activities that can establish an innovative field of study in water desalination by the FO process.

Effect of nonionic surfactant Brij 35 on morphology, cloud point, and pigment stability in Monascus extractive fermentation

2020 ◽  
Vol 100 (12) ◽  
pp. 4521-4530 ◽  
Author(s):  
Xuelian Yang ◽  
Longbei Xiang ◽  
Ye Dong ◽  
Yanping Cao ◽  
Chengtao Wang
Keyword(s):  
Nonionic Surfactant ◽  
Cloud Point ◽  
Extractive Fermentation ◽  
Brij 35 ◽  
Pigment Stability

scholarly journals Biological and physicochemical stability of ceftazidime and aminophylline on glucose parenteral solution

2012 ◽  
Vol 48 (4) ◽  
pp. 691-698
Author(s):  
Carolina Alves dos Santos ◽  
Laura Oliveira-Nascimento ◽  
Marcos Camargo Knirsch ◽  
Marco Antônio Stephano ◽  
Adalberto Pessoa Júnior ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
High Performance ◽  
Inhibitory Concentration ◽  
Serum Levels ◽  
High Loss ◽  
Physicochemical Stability ◽  
Physicochemical Evaluation ◽  
The Mean ◽  
The Stability

Ceftazidime is a broad spectrum antibiotic administered mainly by the parenteral route, and it is especially effective against Pseudomonas aeruginosa. The period of time in which serum levels exceed the Minimum Inhibitory Concentration (MIC) is an important pharmacodynamic parameter for its efficacy. One of the forms to extend this period is to administer the antibiotic by continuous infusion, after prior dilution in a Parenteral Solution (PS). The present work assessed the stability of ceftazidime in 5% glucose PS for 24 hours, combined or not with aminophylline, through High Performance Liquid Chromatography (HPLC). The physicochemical evaluation was accompanied by in vitro antimicrobial activity compared MIC test in the 24-hour period. Escherichia coli and Pseudomonas aeruginosa were the microorganisms chosen for the MIC comparison. The HPLC analysis confirmed ceftazidime and aminophylline individual stability on PS, while the MIC values were slightly higher than the mean described in the literature. When both drugs were associated in the same PS, the ceftazidime concentration by HPLC decreased 25% after 24 hours. Not only did the MIC values show high loss of antibiotic activity within the same period, but also altered MIC values immediately after the preparation, which was not detected by HPLC. Our results indicate that this drug combination is not compatible, even if used right away, and that PS might not be the best vehicle for ceftazidime, emphasizing the importance of the MIC evaluation for drug interactions.

scholarly journals STUDI PERBANDINGAN BIOSURFAKTAN Pseudomonas aeruginosa IA7d DAN SURFAKTAN SINTETIK Tween-80 DALAM BIODEGRADASI SOLAR OLEH MIKROBA PERAIRAN PELABUHAN TANJUNG PERAK SURABAYA

2006 ◽  
Vol 12 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Ni’matuzahroh Ni’matuzahroh ◽  
Arif Yachya ◽  
Mulyadi Tanjung
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Diesel Fuel ◽  
Room Temperature ◽  
Surfactant Solution ◽  
Tween 80 ◽  
Synthetic Surfactant ◽  
Microbial Count ◽  
Crude Product ◽  
And Control ◽  
Biodegradation Test

This research aimed to know the influence of addition crude product Pseudomonas aeruginosa IA7d biosurfactant from substrate hexadecane and diesel fuel in supporting activity of diesel fuel biodegradation and both potention to replace synthetic surfactant for hydrocarbon remediation. Biodegradation test was done by experimental in laboratory scale by Tween-80 as synthetic surfactant comparator. Growth culture was from seawater of Tanjung Perak Harbor Surabaya include various microbe types in its. 2 percent (w/v) of diesel fuel and three surfactants test (0.70 percent w/v crude product P. aeruginosa IA7d biosurfactant from hexadecane substrate; 60,69 percent w/v crude product P. aeruginosa IA7d biosurfactant from diesel fuel substrate; and 0.10 percent w/v synthetic surfactant Tween 80) at uniform surface tension of surfactant solution (54.03 mN/m) were added into 30 ml seawater sample. Cultures were incubated at room temperature (30 °C) during 14 days with shaking (90 rpm). Result of biodegradation test showed the third addition of surfactants test had an effect on acceleration of diesel fuel biodegradation activity that proved at the increased of microbial count (bacterium, yeast, and mould) and decreased of diesel fuel concentration was shown by chromatograms area of diesel fuel. Highest degradation was successively reached by culture got crude product P. aeruginosa IA7d biosurfactant from diesel fuel substrate (88.034 percent), crude product P. aeruginosa IA7d biosurfactant from hexadecane substrate (80.908 percent), synthetic surfactant Tween-80 (54.732 percent), and control that was without addition surfactant test (0.132 percent). Base on number of microbial count, percentage of decreasing chromatogram peaks of diesel fuel from each surfactant test, and price substrate produce (diesel fuel and hexadecane) among both crude product P. aeruginosa IA7d biosurfactant, known that the crude product P. aeruginosa IA7d biosurfactant from diesel fuel substrate had highest ability acceleration to biodegradation activity on diesel fuel and had a potency to replace synthetic surfactant for remediation hydrocarbon application in environment.

scholarly journals Rhamnolipid and lipase production by Pseudomonas aeruginosa san-ai: the process comparison analysis by statistical approach

2013 ◽  
Vol 67 (4) ◽  
pp. 677-685 ◽  
Author(s):  
Sonja Jakovetic ◽  
Zorica Knezevic-Jugovic ◽  
Sanja Grbavcic ◽  
Dejan Bezbradica ◽  
Natasa Avramovic ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Lipase Activity ◽  
Sunflower Oil ◽  
Hydrolytic Enzymes ◽  
Tween 80 ◽  
Lipase Production ◽  
Fermentation Time ◽  
Process Comparison ◽  
Central Composite Experimental Design ◽  
Oil Concentration

Pseudomonas aeruginosa was repeatedly reported as powerful producer of rhamnolipid biosurfactants as well as producer of hydrolytic enzymes. In this study effects of four fermentation factors were evaluated using response surface methodology and experiments were performed in accordance with a four-factor and five-level central composite experimental design. Investigated factors were: fermentation temperature, time of fermentation, concentration of sunflower oil and concentration of Tween? 80. The most important finding was that regression coefficients of the highest values were those that describe interactions between factors and that they differ for lipase and rhamnolipid production, which were both investigated in this study. Production of both metabolites was optimized and response equations were obtained, making it possible to predict rhamnolipid concentration or lipase activity from known values of the four factors. The highest achieved rhamnolipid concentration and lipase activity were 138 mg dm-3 (sunflower oil concentration 0.8 %, Tween? 80 concentration 0.05 %, temperature 30?C, and fermentation time 72 h) and 11111 IU dm-3(sunflower concentration of 0.4 %, Tween? 80 concentration of 0.05 %, temperature of 30?C, and fermentation time of 120 h), respectively.

scholarly journals Effects of pH and Electrolytes on Castor Oil Emulsions with Various Stabilisers Using Khaya senegalensis Gum as an Emulsifier

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Deryl Nii Okantey Kuevi ◽  
Noble Kuntworbe ◽  
Enoch Ayertey
Keyword(s):  
Castor Oil ◽  
Xanthan Gum ◽  
Hydroxypropyl Methylcellulose ◽  
Physical Stability ◽  
Tween 80 ◽  
Volume Data ◽  
Emulsifying Property ◽  
Khaya Senegalensis ◽  
Effects Of Ph ◽  
The Stability

Dispersed systems such as emulsions are easily destabilised during processing and storage since they are thermodynamically unstable systems. It is for this reason emulsifiers/stabilisers are frequently employed in pharmaceutical emulsion formulations to increase their short- and long-term kinetic stability. This current study seeks to investigate the potential emulsifying property of gums obtained from Khaya senegalensis (family: Meliaceae) trees. Gums were collected, authenticated, oven-dried, milled, filtered, and purified using 96% ethanol. The microbial quality of the gum was assessed following the BP (2013) specifications. The purified gum was free from some selected pathogenic microorganisms, rendering the gum safe for consumption. The emulsifying property was investigated by formulating emulsions using castor oil and employing the dry gum method. The ratios of oil-to-water-to-gum for the formulation of a stable emulsion were determined. The stability of the emulsion was evaluated, and an effort was made to improve the stability by incorporating Tween 80, hydroxypropyl methylcellulose, and xanthan gum. From the results, it can be inferred that Tween 80 (0.5%) was able to stabilise the emulsion. Addition of xanthan gum worsened the creaming. The effects of pH (4.0, 5.5, 7.2, 9.0, and 11.0) and electrolytes (0.1 M of NaCl, KCl, and CaCl2) on the physical stability of oil-in-water emulsions were studied during 12 weeks of storage. Percentage creaming volume and whether there was phase inversion were the criteria used as the evaluation parameter. From the percentage creaming volume data, emulsions formulated with both gums showed the lowest creaming volumes at pH of 7.2, followed by the acidic regions (pH 4.0, 5.5), with the basic regions (pH 9.0, 11.0) recording the highest creaming volumes. The effects of the various electrolytes at a constant concentration of 0.1 M on the o/w emulsions were found in this order NaCl < KCl < CaCl2. This study proves that Khaya senegalensis gum can successfully be employed as an emulsifying agent in pharmaceutical formulations.

scholarly journals Production and Characterization of Esterase in Lantinus tigrinus for Degradation of Polystyrene

2013 ◽  
Vol 62 (1) ◽  
pp. 101-108 ◽  
Author(s):  
LUBNA TAHIR ◽  
MUHAMMAD ISHTIAQ ALI ◽  
MUHAMMAD ZIA ◽  
NAIMA ATIQ ◽  
FARIHA HASAN ◽  
...  
Keyword(s):  
Acidic Medium ◽  
Specific Activity ◽  
Mineral Salt Medium ◽  
Tween 80 ◽  
Synthetic Polymers ◽  
Ftir Analysis ◽  
Polystyrene Film ◽  
Biological Degradation ◽  
Ph Range

Polystyrene is considered stable to biological degradation. Lantinus tigrinus isolated from wood sample produced esterase in growth medium under normal conditions. However, acidic medium, 37 degrees C temperature, presence of tween 80; and urea and yeast extract in mineral salt medium enhance the production of esterase and specific activity. Purified esterase was active at broad pH range and 45 degrees C. FTIR analysis confirmed that esterase produced by Lantinus tigrinus effectively degraded polystyrene film and broke macromolecules down to non-toxic molecules. This study concludes that the presence of Lantinus tigrinus at dumping sites can be exploited for waste management containing high molecular weight synthetic polymers.

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