scholarly journals Green synthesis of sulfur nanoparticles and evaluation of their catalytic detoxification of hexavalent chromium in water

RSC Advances ◽  
2018 ◽  
Vol 8 (63) ◽  
pp. 36345-36352 ◽  
Author(s):  
R. M. Tripathi ◽  
R. Pragadeeshwara Rao ◽  
Takuya Tsuzuki
Keyword(s):  
Green Synthesis ◽  
Hexavalent Chromium ◽  
High Efficiency ◽  
Sulfur Nanoparticles

Biosynthesized sulphur nanoparticles showed high efficiency in the reduction of Cr(vi) even at a small catalyst/Cr(vi) ratio.

Hexavalent chromium removal over magnetic carbon nanoadsorbents: synergistic effect of fluorine and nitrogen co-doping

2018 ◽  
Vol 6 (27) ◽  
pp. 13062-13074 ◽  
Author(s):  
Jiangnan Huang ◽  
Yuhang Li ◽  
Yonghai Cao ◽  
Feng Peng ◽  
Yonggang Cao ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Hexavalent Chromium ◽  
Environmental Remediation ◽  
High Efficiency ◽  
Chromium Removal ◽  
Co Doping ◽  
Magnetic Carbon ◽  
First Time ◽  
Co Doped

F and N co-doped magnetic nanocarbons as adsorbents for environmental remediation have been demonstrated for the first time with high efficiency.

A novel and green version of the Passerini reaction in an ionic liquid ([bmim][BF4])

2006 ◽  
Vol 84 (5) ◽  
pp. 794-799 ◽  
Author(s):  
Xuesen Fan ◽  
Yanzhen Li ◽  
Xinying Zhang ◽  
Guirong Qu ◽  
Jianji Wang
Keyword(s):  
Ionic Liquid ◽  
Carboxylic Acid ◽  
Green Synthesis ◽  
High Efficiency ◽  
Passerini Reaction ◽  
Operational Procedure ◽  
First Time

The Passerini three-component condensation among a carboxylic acid (1), an aldehyde or ketone (2), and an isocyanide (3) was carried out for the first time in an ionic liquid, [bmim][BF4], and a series of acyloxycarboxamides were obtained through this reaction. The method presented herein has the advantages of high efficiency, a greener nature, and a simple operational procedure. Moreover, the ionic liquid can be easily recovered and reused for several runs without obvious loss of efficiency.Key words: Passerini reaction, acyloxycarboxamides, ionic liquid, green synthesis.

scholarly journals effectiveness of indigenous local microorganisms in degrading hexavalent chromium (Cr(VI)) in Batik liquid waste

2021 ◽  
Vol 1 (1) ◽  
pp. 19-29
Author(s):  
Reza Fauzi Dwisandi ◽  
Frista Mutiara ◽  
Elsa Nurfauziah ◽  
Vita Meylani
Keyword(s):  
Hexavalent Chromium ◽  
High Efficiency ◽  
Waste Treatment ◽  
Liquid Waste ◽  
High Growth ◽  
Textile Wastewater ◽  
High Growth Rate ◽  
Gram Negative Bacteria ◽  
Small And Medium Industry

The batik industry in Indonesia has an IKM (Small and Medium Industry) scale so that it does not yet have adequate waste treatment. In the long term, waste is disposed of directly into the environment which can damage aquatic ecosystems and harm human health. Textile wastewater has a complementary picture and has a deep color. One of the most dangerous heavy metals contained in textile waste is hexavalent chromium (Cr(VI)). Several ways can be done to reduce hexavalent chromium (Cr(VI)) by bioremediation. Based on the results of the literature review, it shows that the bioremediation agents from single isolate microorganisms that are most effective in degrading chromium with high efficiency are Bacillus subtilis and Pseudomonas aeruginosa. The most effective consortium servers with constant reduction rates are the consortium of bacteria genus Mesophilobacter, Methylococcus, Agrobacterium, Neisseria, Xanthobacter, Deinococcus, Sporosarcina, and Bacillus by reducing BOD levels by 85.71%. The hexavalent chromium-degrading microorganisms are characterized by the presence of chromate reductase enzymes, mostly gram-negative bacteria, and a high growth rate.

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