Sustainable and Efficient Route for the Regeneration of Carbonyl Compounds from Oximes Using Aqueous Extract of <i>Sapindus laurifolia</i> under Microwave Radiation

Das, B.; Mohapatra, Ranjan K.; Parhi, Pankaj Kumar; Sarangi, Ashish K.; Sahu, Raghaba; Barik, Soumya R.

doi:10.1021/acsomega.0c00774

Cited by 28 publications

(7 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Microwave irradiation extraction of minerals in metallurgy has shifted into the focus of attention in recent years. − Compared with traditional heating, the major advantages of microwave irradiation are the rapid internal heating, selective heating, higher thermal efficiency, pollution-free environment, convenient automatization, and several nonthermal effects of microwaves. , Because of the selective heating of microwave irradiation, it only affects polar substances . Activated carbon is an effective microwave absorber by which the heating rate by microwave irradiation can reach 21 K/s, and it can be heated to 1053–1556 K in a short time.…”

Section: Introductionmentioning

confidence: 99%

Nonoxidative Microwave Radiation Roasting of Bastnasite Concentrate and Kinetics of Hydrochloric Acid Leaching Process

Zheng

Cui

et al. 2020

ACS Omega

View full text Add to dashboard Cite

Herein, a new clean extraction technology for the decomposition of bastnasite concentrate by utilizing the microwave radiation is proposed, which prevented Ce(III) from being oxidized to its tetravalent form. The process includes microwave radiation roasting to nonoxidatively decompose the bastnasite concentrate, mechanism analysis of Ce(III) not being oxidized to Ce(IV), hydrochloric acid leaching of the nonoxidative roasted ore, and kinetics analysis of the leaching process. The experiments were carried out concentrating on the effect of roasting temperature and holding time on the decomposition rate of the bastnasite concentrate and the oxidation rate of cerium and the effect of acidity, liquid–solid ratio, leaching temperature, and stirring rate on the leaching kinetics of the nonoxidative roasting ore. When the roasting temperature is 1100 °C, the holding time is 20 min, and the m (C)/ m (REFCO 3 ) ratio is 0.2, the results show that the leaching efficiency of rare earths can reach 85.45% under the conditions 3 mol/L HCl, 90 °C, 60 min, 9 mL/g liquid–solid ratio, and 300 rpm stirring rate. The X-ray diffraction and scanning electron microscopy analyses of the samples before and after acid leaching show that the rare earth oxides were completely leached and Ce(III) was not oxidized to its tetravalent form. The apparent activation energies of leaching rare earths were calculated as 14.326 kJ/mol, and the HCl leaching process can be described by a new variant of the shrinking-core model, in which both the interfacial transfer and the diffusion through the product layer influenced the reaction rate. Furthermore, a semiempirical rate equation was created to describe the leaching process of the nonoxidative roasted ore.

show abstract

Section: Introductionmentioning

confidence: 99%

Nonoxidative Microwave Radiation Roasting of Bastnasite Concentrate and Kinetics of Hydrochloric Acid Leaching Process

Zheng

Cui

et al. 2020

ACS Omega

View full text Add to dashboard Cite

show abstract

“…Surfactants are wetting agents that decrease the surface tension of water when dissolved in it. , This decreased surface tension allows easier spreading of water molecules over FA. Thus, the wettability of FA particles increases and the FAS preparation becomes easier.…”

Section: Resultsmentioning

confidence: 99%

Sustainable Transportation, Leaching, Stabilization, and Disposal of Fly Ash Using a Mixture of Natural Surfactant and Sodium Silicate

Behera

Das²,

Mishra

et al. 2021

ACS Omega

Self Cite

View full text Add to dashboard Cite

The present study evaluates the transportation, leaching, and stabilization ability of novel saponin extracted from the fruits of Acacia auriculiformis. To enhance the dispersing behavior of the fly ash slurry (FAS) at a lower dosage of sodium silicate, A. auriculiformis was incorporated in FAS. In addition to the rheological study, an attempt has been made to remove heavy metals through leaching for the safe disposal of FAS. Critical factors such as the fly ash (FA) concentration, saponin dosage, surface tension, ζ potential, temperature, and combination of saponin and sodium silicate, affecting the rheology of FAS, were extensively studied. The addition of a nonionic natural surfactant saponin has been proved to enhance the wettability of FA particles by decreasing the surface tension of FAS. The obtained rheology results were compared with the stabilization yield of the previously reported commercial surfactant cetyltrimethylammonium bromide. The incorporation of sodium silicate in the FAS system was found to be phenomenal in the settling and stabilization of FAS, thereby developing reaction products like sodium aluminum silicate (N-A-S). This facilitates the sustainable disposal of FA preventing air pollution after dewatering. The formation of N-A-S was further supported by scanning electron microscopy (SEM) and X-ray diffraction (XRD) studies.

show abstract

“…The plant origin bio-surfactants like Sapindus mukorosssi, Sapindus laurifolia, Acacia concinna, and Acacia auriculiformis due to their amphiphilic nature have been widely applied in various types of application such as surface modification of coal and fly ash in the preparation of slurry [52][53][54][55][56][57], dye degradation [58], removal of toxic elements from fly ash to prepare various composite materials [59,60] and solubilization, of organic compound in functional group interconversion process [61,62]. However their application in surface modification of silk surface is scanty.…”

Section: Bio-surfactantmentioning

confidence: 99%

Extraction of Silk Fibroin with Several Sericin Removal Processes and its Importance in Tissue Engineering: A Review

et al. 2022

Self Cite

View full text Add to dashboard Cite

Sericin is a sticky protein substance, which is generated by the silk-worm for holding the filaments of silk tightly. The main constituent of natural crude silk is made up of sericin and fibroin. Fibroin and sericin play a vital role in increasing the strength, stiffness and on maintaining the constructional integrality of the cocoon. This review reports the role of several types of degumming agents for the removal of sericin from silk surfaces and an overview of silk fibroin approaches in the tissue engineering field. The prime factors responsible for the removal of sericin (degumming) from silk were systematically analyzed and discussed. The key factors affects on modification of the silk surface are includes surfactant, degumming time, temperature, advanced techniques such as ultra-sonication, microwave radiation, infrared radiation, low-temperature oxygen plasma radiation, and PH. These factors influence either individually or cumulatively at the degumming process. Tissue engineering is an emanate and most optimistic approach to restore tissue malfunction by adopting the concept of the technology being practiced using numerous biomaterials, cells, and the nutrient-specific growth factors. Different types of materials include various bio-material and mainly of silk fibroin constituent of it is conceding most optimistic biomaterials in tissue engineering application. Silk fibroin is a naturalistic protein-based polymer with an eminent physiochemical characteristic, are magnificent biocompatibility, amenable biodegradability, proper oxygen, and water-vapor permeability, and least inflammatory reaction. The critical studies accomplishing on the role of Silk fibroin and various approaches adopted in the degumming process is extensively reviewed and reported.

show abstract

Sustainable and Efficient Route for the Regeneration of Carbonyl Compounds from Oximes Using Aqueous Extract of Sapindus laurifolia under Microwave Radiation

Cited by 28 publications

References 42 publications

Nonoxidative Microwave Radiation Roasting of Bastnasite Concentrate and Kinetics of Hydrochloric Acid Leaching Process

Nonoxidative Microwave Radiation Roasting of Bastnasite Concentrate and Kinetics of Hydrochloric Acid Leaching Process

Sustainable Transportation, Leaching, Stabilization, and Disposal of Fly Ash Using a Mixture of Natural Surfactant and Sodium Silicate

Extraction of Silk Fibroin with Several Sericin Removal Processes and its Importance in Tissue Engineering: A Review

Contact Info

Product

Resources

About