molecular hydrogen
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2022 ◽  
Vol 579 ◽  
pp. 117338
Andrea Ricci ◽  
Barbara I. Kleine ◽  
Jens Fiebig ◽  
Jóhann Gunnarsson-Robin ◽  
Kennedy Mativo Kamunya ◽  

Toxics ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 37
Edoardo Dell’Armi ◽  
Marta Maria Rossi ◽  
Lucia Taverna ◽  
Marco Petrangeli Papini ◽  
Marco Zeppilli

Trichloroethylene (TCE) and more in general chlorinated aliphatic hydrocarbons (CAHs) can be removed from a contaminated matrix thanks to microorganisms able to perform the reductive dechlorination reaction (RD). Due to the lack of electron donors in the contaminated matrix, CAHs’ reductive dechlorination can be stimulated by fermentable organic substrates, which slowly release molecular hydrogen through their fermentation. In this paper, three different electron donors constituted by lactate, hydrogen, and a biocathode of a bioelectrochemical cell have been studied in TCE dechlorination batch experiments. The batch reactors evaluated in terms of reductive dechlorination rate and utilization efficiency of the electron donor reported that the bio-electrochemical system (BES) showed a lower RD rate with respect of lactate reactor (51 ± 9 µeq/d compared to 98 ± 4 µeq/d), while the direct utilization of molecular hydrogen gave a significantly lower RD rate (19 ± 8 µeq/d), due to hydrogen low solubility in liquid media. The study also gives a comparative evaluation of the different electron donors showing the capability of the bioelectrochemical system to reach comparable efficiencies with a fermentable substrate without the use of other chemicals, 10.7 ± 3.3% for BES with respect of 3.5 ± 0.2% for the lactate-fed batch reactor. This study shows the BES capability of being an alternative at classic remediation approaches.

ChemSusChem ◽  
2022 ◽  
David K. Leonard ◽  
Pavel Ryabchuk ◽  
Muhammad Anwar ◽  
Sarim Dastgir ◽  
Kathrin Junge ◽  

2022 ◽  
Shalini Pandey ◽  
Subhayan Chakraborty ◽  
Rimilmandrita Ghosh ◽  
Divya Radhakrishnan ◽  
Saravanan Peruncheralathan ◽  

The effectiveness of MRI as a diagnostic tool have increased tremendously after the discovery of contrast agents (CA). Most of the clinically approved CAs at present are relaxation based and...

Tejas A Gokhale ◽  
Amol Bhanudas Raut ◽  
Sheetal K Chawla ◽  
Bhalchandra Mahadeo Bhanage

This work aims to explore cascade and sequential one pot syntheses pathways for N-substituted pyrrolidones from aryl aldehydes and bio-derived levulinic acid (LA) using molecular hydrogen and ammonia. This process...

2022 ◽  
Vol 914 ◽  
pp. 174664
Ting-ting Li ◽  
Tian Sun ◽  
Yue-zhen Wang ◽  
Qiang Wan ◽  
Wen-zhi Li ◽  

2022 ◽  
Jogendra Nath Behera ◽  
Rajat Kumar Tripathy ◽  
Aneeya K Samantara ◽  
Pratap Mane ◽  
Brahmananda Chakraborty

Generation of molecular hydrogen by electrochemical water splitting is a promising approach and its efficiency strictly adhere on the electrocatalyst used. Therefore, it’s an ongoing challenge to design materials having...

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