From trace to pure: Recovery of scandium from the waste acid of titanium pigment production by solvent extraction

2019 ◽  
Vol 121 ◽  
pp. 118-124 ◽  
Author(s):  
Hongbin Qiu ◽  
Mengliang Wang ◽  
Yingming Xie ◽  
Jianfeng Song ◽  
Tao Huang ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Pigment Production ◽  
Waste Acid

Recovery of scandium from white waste acid generated from the titanium sulphate process using solvent extraction with TRPO

2020 ◽  
Vol 195 ◽  
pp. 105398
Author(s):  
Jie Zhou ◽  
Qing Yu ◽  
Yu Huang ◽  
Jiejie Meng ◽  
Yedan Chen ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Waste Acid

Recovery of scandium from red mud by leaching with titanium white waste acid and solvent extraction with P204

2021 ◽  
pp. 105724
Author(s):  
Jie Zhou ◽  
Shuyi Ma ◽  
Yedan Chen ◽  
Shunyan Ning ◽  
Yuezhou Wei ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Red Mud ◽  
Titanium White ◽  
Waste Acid

scholarly journals Purification and optimization of pink pigment produced by newly isolated bacterial strain Enterobacter sp. PWN1

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Kasturi Poddar ◽  
Bhagyashree Padhan ◽  
Debapriya Sarkar ◽  
Angana Sarkar
Keyword(s):  
Solvent Extraction ◽  
Column Chromatography ◽  
Bacterial Strain ◽  
Biochemical Characterization ◽  
Pigment Production ◽  
Quadratic Model ◽  
Rrna Gene ◽  
Coliform Bacterium ◽  
India Ink ◽  
Institute Of Technology

AbstractPigment-producing bacteria were isolated from kitchen wastewaters of the National Institute of Technology, Rourkela. A pink non-virulent bacterial strain PWN1 was selected based on the India Ink Broth and Coomassie Brilliant Blue (R-250) dye assay. According to morphological and biochemical characterization, the strain PWN1was a Gram-negative, rod-shaped, motile, non-coliform bacterium and could utilize only glucose and adonitol as sole carbon source. The pigment was found to be a growth-associated product, and the pigment production was accelerated after 40 h of bacterial culture. Further, 16S rRNA gene-based molecular identification showed its similarity with Enterobacter sp. The pigments were extracted by the solvent extraction method using chloroform and ethanol (3:1). The extracted pigments were then purified through thin-layer chromatography and column chromatography. To maximize pigment production, the culture condition was optimized for maximum biomass production using statistical software Design Expert v13. A quadratic model was structured describing the process efficiently and it suggested a moderate temperature, pH, and a high inoculum concentration which generated biomass of 3.81 ± 0.02 g/L. At optimized condition, 1 L of cell culture produced 3.77 g of biomass which produced a crude pigment of 0.234 g after solvent extraction and 0.131 g after column chromatography, implying a yield of 6.2% for crude pigment and 3.47% for purified pigment from biomass. The yield of the obtained pigment was high enough to draw interest for industrial production, although the application of the pigment is considerable for further study.

scholarly journals EVALUATION OF CYTOTOXIC ACTIVITY OF ETHYL ACETATE EXTRACT OF PIGMENT FROM PSEUDOMONAS AERUGINOSA

2020 ◽  
pp. 136-140
Author(s):  
GEETANJALI R KAMBLE ◽  
HIREMATH SV ◽  
HIREMATH MB
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Solvent Extraction ◽  
Cytotoxic Activity ◽  
Query Sequence ◽  
Cost Effective ◽  
Pigment Production ◽  
Physical Parameters ◽  
Physical Factors ◽  
Isolation And Characterization

Objective: Bacterial pigments have promising applications in food, cosmetics, textile, and therapeutics. Pigments from microbial origin are stable, safer, cost effective, easy production, and extraction and thus preferred over other natural sources. Under this backdrop, isolation and characterization of pigment-producing bacteria and analysis of bioactivity of the pigment were the aim of the study. From the literature studies, the pigment production was found to be influenced by various physical factors which directed the study toward optimization of physical parameters for pigment production. Methods: Isolation of pigment-producing bacteria from water sample, cultural, and microscopic identification was done as per the standard protocol. Extraction of pigment by solvent extraction was carried out and its antibacterial and cytotoxic activity was assayed. Results: Molecular characterization of the bacteria resembled the query sequence of the isolate to 99% with Pseudomonas aeruginosa strain. Extraction of pigment by solvent extraction method resulted in crude pigment extract with antibacterial activity against Gram-negative bacteria (17 mm zone of inhibition) at 100 μg/ml concentration. Pigment showed dose-dependent inhibition on proliferation of HeLa cells at the concentration of 345.83 μg/mL. Conclusion: From the above results, it was evident that the pigment extracted from the bacterial isolate Pseudomonas aeruginosa strain JBT18N was therapeutically potential.

STUDIES ON A NON-MELATONIN PINEAL ANTI-GONADOTROPHIN

1972 ◽  
Vol 69 (2) ◽  
pp. 257-266 ◽  
Author(s):  
Bryant Benson ◽  
Mary Jane Matthews ◽  
Alvin E. Rodin
Keyword(s):  
Solvent Extraction ◽  
Organic Solvent ◽  
Pineal Gland ◽  
Gel Filtration ◽  
Test System ◽  
Pineal Body ◽  
Physiological Effects ◽  
Organic Solvent Extraction ◽  
Gland Function

ABSTRACT Continuing investigation of pineal gland function indicates that the anti-gonadotrophic activity of this organ cannot be attributed solely to the postulated hormone melatonin, the concentration of which is negligible in the pineal body compared to quantities required to produce unequivocal physiological effects. A non-melatonin antigonadotrophic substance recently isolated from bovine pineal glands was further purified by organic solvent extraction, ultrafiltration and gel filtration. Studies of partial blockage of compensatory ovarian hypertrophy in unilaterally ovariectomized Charles River CD-1 mice indicated that this substance is significantly more potent than melatonin in this test system.

Aplikasi Pendayagunaan Asam In-Situ pada Kulit Pikel Terbuang untuk Pembuatan Gelatin Pangan

2016 ◽  
Vol 9 (2) ◽  
pp. 187-197
Author(s):  
Sugihartono Sugihartono
Keyword(s):  
Food Industry ◽  
Type A ◽  
Collagen Fibers ◽  
Final Phase ◽  
Acid Base ◽  
Salt Hydrate ◽  
Food Grade ◽  
Hydrolyze Collagen ◽  
Waste Acid

Skinswaste at pre-tanning operations can be processed into food grade gelatin. The degradation of collagen using acid, base, or enzymes produced gelatin. Pickle skins is skins that acidified, the results of the final phase of the pre-tanning operations. The addition of salt on the skin makes the skins pickle not swollen, produced a wide space between collagen fibers and collagen can not be degraded. Thereby directly extract pickle skins or waste will not be obtained gelatin.This study discussed the processing of food gelatin type A pickle skins through the utilization of waste acid it contains. The discussion includes the components of animal skins, pre-tanning waste, acidification of skins, processing gelatin and gelatin from skins picklewaste and usefulness for the food industry. Salt hydrate collagen fibers in the skin pickle including waste can be separated by washing, to a certain extent still acidic skins waste. The remaining acid on the skins pickle waste can be utilized to hydrolyze collagen into gelatin. The resulting gelatin is gelatin type A, that can be used for food industry.ABSTRAKKulit limbah pada operasi pra-penyamakan dapat diolah menjadi gelatin pangan. Pemecahan kolagen menggunakan asam, basa, atau enzim dihasilkan gelatin. Kulit pikel merupakan kulit yang diasamkan, hasil dari tahap akhir operasi pra-penyamakan. Penambahan garam pada kulit pikel menjadikan kulit tidak bengkak, menghasilkan ruang lebar diantara serat kolagen dan menjadikan kolagen tidak dapat terdegradasi. Hal ini berarti ekstrak secara langsung kulit pikel atau limbahnya tidak akan diperoleh gelatin. Dalam kajian ini dibahas pengolahan gelatin pangan tipe A dari kulit pikel limbah melalui pendayagunaan asam yang dikandungnya. Bahasan mencakup komponen kulit hewan, limbah pra-penyamakan, pengasaman kulit, pengolahan gelatin, dan pengolahan gelatin dari kulit pikel limbah melalui pendayagunaan asam yang dikandungnya serta kegunaannya untuk industri pangan. Garam yang menghidrasi serat kolagen pada kulit pikel termasuk limbahnya dapat dipisahkan dengan cara pencucian, sampai batas tertentu kulit limbah masih bersifat asam. Asam yang tersisa pada kulit pikel limbah tersebut dapat didayagunakan untuk menghidrolisis kolagen menjadi gelatin. Gelatin yang dihasilkan adalah gelatin tipe A, dapat digunakan untuk keperluan industri pangan. Kata kunci : Kulit pikel limbah, gelatin, pengasaman, pangan.

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