Pseudomonas aeruginosa is a pioneer bacterium initiating the biofilm formation process so that it corrosive to some metals in marine environment. One of efforts prevent and control corrosion due environmentally friendly biofilms using green biocides. The extraction Aloe vera Morinda citrifolia with methanol were carried out obtain antibacterial material. extract those plants multilevel maceration method. study aimed identify total phenolic flavonoid contents A. M. crude extracts compare two...

The present study investigates the inhibition potential of Tinospora cordifolia extract in combination with different methanol solvents on corrosion carbon steel artificial seawater environments. Potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) methods were utilized to evaluate this inhibitor. measurement data show a positive correlation among efficiency (%IE), inhibitor concentration, temperature, time. However, above 320 K, has slight decline, as well...

Abstract This study evaluated Aloe vera extract as a green inhibitor to prevent corrosion in seawater environments. A. was produced by maceration with methanol–water at room temperature. Electrochemical techniques were used evaluate the effectiveness of extract. The morphology products analyzed FE-SEM equipped EDS and AFM. FT-IR LCMS characterized functional structural groups this electrochemical measurements show that could effectively reduce API 5L steel Inhibition efficiency (IE)...

The Tinospora genus is widely utilized because of its numerous bioactive compounds. This work aimed to isolate the constituents and antibacterial activities T. cordifolia plant. Maceration, column chromatography, thin-layer chromatography plates were identify visualize extracted isolated Total phenolics flavonoids in extracts active fractions also analysed. Substances identified through their molecular structure mass. names, weights, structures components test materials verified using...

In this study, the Morinda citrifolia extract was evaluated as a sustainable inhibitor of mild steel in saline environments. The work aimed to determine inhibition efficiency new active material for metal corrosion inhibition. powdered simplicia M. extracted macerator three days using solvent daily. functional group bonds were analyzed by Fourier Transform Infrared (FT-IR). performance extracts with potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS)...

Bahasa merupakan alat komunikasi utama yang memungkinkan manusia saling memahami baik dalam konteks sosial maupun budaya. Model mental sebuah representasi gambaran dimiliki individu berdasarkan pengalaman sebelumnya. Sedangkan proses produksi bahasa mencakup kemampuan menyusun kalimat ataupun pemilihan diksi tepat. Tujuan penelitian ini adalah menganalisis relevansi antara model dan pada faktor psikolinguistik; Metode yg digunakan Kualitatif deskriptif dengan berbagai sumber teori hasil...

This research focuses on determining the amount of tofu production based consumer demand and raw material inventory. Optimization daily is a difficult problem due to uncertainty supply an for tofu. The method used in this fuzzy logic which one effective rule-based approach methods determine volume production. In research, data taked results previous research. final obtained study, namely determination inventory still less effective. because received available with produced not appropriate

Metal nanoparticles (MNPs) developed through green synthesis with various plant extracts have piqued the scientific community due to their antimicrobial and anticorrosion properties. Several methods characteristics been successfully implemented evaluate pharmacological properties performance of these MNPs. This article discusses plant-based metallic nanoparticles, different types prospective applications. review intends understand, what is commonly reported in papers about MNPs as agents,...

This work investigates the preventive effect of Tinospora cordifolia extract on biocorrosion induced by Pseudomonas aeruginosa mild steel API 5L in simulated seawater medium. Electrochemical techniques, spectroscopic and surface analysis were employed to investigate biocide performance corrosion behavior. P. has been shown enhance iron dissolution These findings point role bacteria forming differential oxygen, which causes corrosion. Morphology results from atomic Fourier microscopy (AFM)...

Magnesium is widely used in varieties industrial sector. Dolomite one source of magnesium besides seawater. The extraction from dolomite ores can be done by leaching process. In this work, the to extract hydrochloric acid was investigated. experiments were performed a spherical glass batch reactor having capacity 1000 ml. effects stirring speed, concentration, reaction temperature and liquid-solid ratio for each time 1; 2; 3 h on Mg have been evaluated. 5 ml solution sample collected leached...

Regarding the issue of green chemistry and vision human sustainability, a novel corrosion inhibitor for API 5L carbon steel was explored from Eucheuma seaweed algae. The inhibiting performance extract studied by electrochemical measurements such as potentiodynamic polarization impedance spectroscopy (EIS). In this work, Fourier Transform Infra-Red (FTIR) also employed to confirm main phenolic compounds extract. measurement result indicated that an efficient in reducing attacks hydrochloric...

Mitigation and control of bacterial corrosion must have been prioritized for failure anticipation by associated with microorganisms. Using synthetic inhibitor material protection from problems because it is not eco-friendly. This work conducted preliminary studies on T. cordifolia stem extracts at various methanol ratios against P. aeruginosa biofilm as a new eco-friendly inhibitor. The was extracted the maceration method different ratio solvent (100, 75 50 %). activity assessed using...

Pseudomonas aeruginosa is a bacterium that causes metal deterioration by forming biofilms on surfaces. This work was carried out to analyze the antibacterial activity and phenolic flavonoid contents of Moringa oleifera leaf extract against aeruginosa. M. leaves were extracted in methanol solution at different concentrations. The yields 12.84%, 18.96%, 19.64% for 100%, 75%, 50% ratios, respectively. Extracts had minimum inhibiting concentration (MIC) approximately 6144 μg/mL P. ratio 100%...

Abstract In this study, the corrosion behavior of carbon steel had been investigated in river Sukabumi Region, West Java. The rates those steels were measured by weight-loss method after exposure for certain periods time various depth water (0 meters and 1 meter). surface morphology composition their product characterized using scanning electron microscopy (SEM), XRD (X-ray diffractometer) energy dispersive spectroscopy (EDS). After exposure, entire was covered all water. On basis results,...

This work extracted the Tinospora cordifolia stem for antibacterial and antioxidant materials. The stems of T. were by using a simple maceration method. effect three independent variables (solvent ratios, temperature, extraction time) was investigated to obtain optimal conditions. Ten grams mixture methanol–water ratios 00:100, 15:85, 30:70, 45:55 (% v/v) at 50–95 °C 0.5 3 h. total phenolic flavonoid content in extracts analyzed Folin-Ciocalteu Colorimetric-AlCl3 methods. activities against...

A rapid cooling process is essential to maintain an optimal working temperature in a vehicle, which directly impacts its efficiency. Corrosion persistent and inevitable damage systems that use water-based fluids. The current challenge explore fluids not only exhibit excellent corrosion resistance but also possess superior heat conduction properties improve vehicle This study investigated the incorporation of Graphene Oxide, renowned for inhibition properties, into ethylene glycol/water...

PENGARUH SUHU KALSINASI PADA PROSES DEKOMPOSISI DOLOMIT . Proses dekomposisi dolomit menjadi MgO dan CaO merupakan proses penting mengingat kedua oksida tersebut banyak digunakan dalam berbagai aplikasi. Untuk melihat pengaruh suhu kalsinasi terhadap CaO, maka dilakukan kalsinasi. menggunakan tungku Muffle furnace dengan sebesar 500 o C, 600 700 800 900 C. Sebanyak kurang lebih 100 gram/sampel dimasukkan dipanaskan laju pemanasan 10 oC/menit pada yang kemudian ditahan masing-masing selama 1...

Optimal production of ammonia (NH3) using natural gas is necessary in order to make it available for wide range applications including the manufacture fertilizers, fuel transportation and during synthesis some chemicals. Achieving this would require strategic implementation a control scheme simulated production, capable ensuring adequate realization targets. The work involves ASPEN Plus modeling, simulation, sensitivity analysis NH3 process. Steam/carbon ratio, conversion CH4, removal carbon...

Abstract Corrosion is one of the most common problems in water distribution systems. The purpose this research to investigate corrosion rate carbon steel synthetic freshwater. influence a variety time exposure that represents actual conditions practice was performed. Research conducted by weight loss methods using immersion test. parameters quality were measured multimeter portable (Hach HQ40d). From experiments obtained freshwater ranged between 0.41 - 0.76 mpy. results study are expected...

Penggunaan baja karbon dalam pembangunan infrastruktur kawasan maritim dan lepas pantai sangat rentan terhadap kerusakan akibat korosi. Untuk mengetahui pengaruh suhu laju korosi dari tersebut, maka dilakukan pengkajian dengan metode Tafel polarisasi linear secara elektrokimia pada media air laut. Ekstraspolasi berbagai mengubah potensial elektroda otomatis. Hasil korsi rendah laut ruang, 37 oC 50 masing-masing sebesar 5,54 mpy; 11,91mpy 14,53 mpy. Kenaikan akan menyebabkan bertambahnya...

The problem of corrosion were common phenomena in heat exchanger. quality feed water and material was one the causes corrosion. Carbon steel commonly used as tube exchanger ammonia plant. Low carbon immersed simulated to determine rate. Water parameter such Dissolved Oxygen (DO), Total Solid (TDS), conductivity, salinity, pH measured. It is found that rate increase for first week 3 weeks, then decrease next week. Corrosion resistance low influenced by DO, TDS, conductivity. And morphology...