Abstract BACKGROUND Lubricants manufactured conventionally from non‐renewable mineral oil resources are not biodegradable and liable to cause adverse environmental impacts. Biodegradable vegetable oils present a promising lubricant feedstock alternative. Waste cooking (WCO), which otherwise finds no immediate potential utilization can be successfully used synthesize bio‐lubricant. A novel synthetic method was developed by using the two‐step process of C. rugosa lipase‐mediated hydrolysis WCO...

Worldwide concerns over the environment have stimulated increasing interest both in academic and industry for deep desulfurization of gasoline. Due to some inherent disadvantages associated with conventional hydrodesulfurization, several non-conventional techniques are being tried by researchers. Pervaporation is such a recently developed technology gasoline desulfurization. Its efficiency has attracted worldwide attention. Compared sulfur removal gasoline, pervaporation exhibits advantages...

Octyl esters can serve as an important class of biolubricant components replacing their mineral oil counterparts. The purpose the current work was to investigate enzymatic esterification reaction free fatty acids (FFA, from waste cooking oil) with octanol in a solvent-free system using commercial lipase Novozyme 435. It found that esterificaton followed Ping-pong bi-bi kinetics no inhibition by substrates or products within studied concentration range. maximum rate estimated be 0.041 mol...

In this work, the effect of alkali-treatment and its variables viz., time concentration alkali, on creep properties jute fibre were studied. It was demonstrated that kind treatment leads to several changes in fine structure, such as voids creation fibrillation. The behaviour measured for alkali treated well dewaxed fibres. Creep value much higher 17.5% NaOH fibres compared 8 hrs fibres, slightly more than 20 mins XRD study revealed experimental conditions resulted closer packing cellulose...

Abstract The synthesis of lubricant‐grade ester using waste cooking oil (WCO) as the primary feedstock is characterized in detail and optimized. WCO was initially hydrolyzed Candida rugosa lipase to convert triglycerides into free fatty acids (FFA). Subsequently, FFA were esterified with octanol by a heterogeneous catalytic reaction batch mode. Both hydrolysis esterification steps optimized terms relevant process parameters, employing well‐known response surface methodology. final product...

Designed azobenzene-based enediyne-amino acid C2-symmetric hybrids have been synthesized and the role of amino linker in stabilizing Z form has demonstrated; DNA-binding cleavage studies established higher reactivity Z-isomers.

Abstract Starch/Polyvinyl alcohol (PVA) based biocomposite films reinforced with micro crystalline cellulose (MCC) (10 wt %) particles were prepared by solution casting method, incorporating glycerol as plasticizer. These subjected to biodegradation at ambient temperature in a simulated aerobic compost pit. The extent of these was studied terms weight loss. corresponding changes the structure observed using scanning electron microscopy, X‐Ray diffraction study, and differential calorimetry....

Abstract Jute nano fiber (JNF) reinforced biocopolyester‐based composite sheets were prepared with 2% and 10 wt % filler loading compostability tests performed in simulated aerobic compost environment at ambient temperature for a period of 50 days. Weight loss study revealed that the incorporation JNF enhanced rate degradation significantly. The unreinforced sample exhibited steady weight, whereas, samples showed three phase degradation. They had weight up to 30 days followed by plateau zone...

The call for “sustainable development” has laid special emphasis on the “go green” concept and thus countries worldwide are taking initiatives to procure successful “clean green technologies”. In this milieu uncongenial conventional mineral‐oil based lubricants, causing adverse environmental impacts, can efficaciously be replaced by biodegradable vegetable oil biolubricants. This article presents utilization of waste cooking (WCO) synthesize biolubricant using a biocatalytic route. developed...

Abstract In this study, we examined the effect of alkali treatment and its variables, namely, time (2, 4, 6, or 8 h) concentration (1, 5, 17.5% w/w), on linear density, strength, stress‐relaxation properties jute fiber. It was demonstrated that kind led to creation several voids fiber fibrillation. Properties were measured for alkali‐treated dewaxed fibers. The density tenacity fibers reduced at higher longer dipping times. strength increased with mild decreased strong alkali. A very low...

The present investigation focuses on the separation of phenanthrene (a polyaromatic hydrocarbon) from n ‐tetradecane (model diesel composition) via pervaporation using a fabricated aromatic polyimide membrane. experiments demonstrate preferential permeation for all films within studied experimental range. influence operating temperature, membrane pretreatment time, composition, and thickness pervaporative performance were investigated. Statistical software Design Expert 7.1.4 was used to...

Pyrolysis gasoline (Py gas) is used as an octane enhancer of it rich in aromatics. However, removal carcinogenic benzene from Py gas before blending with important to meet the fuel specifications. The main focus this present study determine sorption kinetics and isotherm a fabricated insitu nano silver/polyvinyl alcohol (insitu Ag/PVA) membrane for pervaporative separation model [mixture (aromatic) 1-octene (aliphatic)]. thickness, surface morphological structure (Atomic Force Microscopy)...

To meet stringent fuel specifications, separation of aromatics from aliphatics is an everyday challenge for a refiner. In the present investigation, aromatic polyimide membrane fabricated and explored polyaromatic hydrocarbon (phenanthrene) model diesel composition (n-tetradecane) via pervaporation. The pervaporative prepared by casting solution polyamic acid, N,N-dimethylacetamide (DMAc), phenanthrene using simple low-cost procedure. Scanning electron microscopy (SEM), Fourier transform...

This paper presents the design of modified radial basic function neural controller (MRBFNC) for pitch control an aircraft to obtain desired angel as required by pilot while maneuvering aircraft. In this design, parameters basis (RBFNC) are optimized implementing a feedback mechanism which is controlled tuning factor “ α ” ( T factor). For given input, response RBFN tuned using better performance system. The proposed system demonstrated under different condition (absence and presence sensor...