User talk:Kelly Fu/sandbox
Assignment 2
Remediation of chlorinated organic compounds has been an important area of research ever since chloroethene pollution in groundwater became a public health issue. The discovery of microbial and electrochemical treatments sparked more scientific interest to the area leading to the high notability of the subject. Since microbial remediation can sometimes be costly and not always accessible, it’s crucial to explore alternative options that are both convenient and effective. However, the “electrochemical” section of the article only briefly covers the basic understanding of electrolysis but lacks critical information on more recent findings regarding the subject. The readers are able to grasp the process of remediation but are left with unanswered questions as to why it might be favourable or what makes it effective. A single example was given with a well supported reference but it failed to include details and explanations of its relevance.
In order to improve the “electrochemical” section of the article, comparisons of model materials, evidence of model significance and a brief mention of bioelectrochemical reductive dechlorination will be added. Some of the key components that affect overall performance of an electrolytic cell are types of electrodes, electrolyte mediums, and use of mediators. Through multiple studies, it’s been found that the use of palladium electro-catalyst increases reaction rate by numerous folds.[1] Since hydrogen is a commonly used reducing agent in the reactors, palladium offers a lattice formation that will intercalate hydrogen gas making it more accessible to be readily oxidized.[2] Materials for cathode will also be discussed to select for those that are cheap to produce industrially, remains stable in a wide range of solvents and absorbs readily. This additional information will provide insights to understanding the advantages of using industrialized remediation techniques. Bioelectrochemical reductive dechlorination merges two types of remediation together for maximizing efficiency. By using this method, available microorganisms can be exploited while man-made tools can aid to speed up the process and mediate redox for controlling microbial reactions.[3] This new method is relevant to the topic as it introduces an integration from the best of both processes.
Kelly Fu (talk) 04:08, 27 September 2017 (UTC)
Kelly Fu's Peer Review
[edit]The two added paragraphs, mainly about hydrodechlorination (HDC) and the control of electrochemical reduction, are very well-written. Since HDC is a type of electrochemical reductive dechlorination, the added contents are relevant to the article topic. Also, the paragraphs are placed suitably; both paragraphs talk about electrochemical reduction, so it is appropriate to place them under the “electrochemical” section. However, to make the article flow more nicely, the sentence that describes the components of an electrolytic cell (second paragraph) could be moved to the first paragraph, right after electrolysis is mentioned. By moving this sentence, each paragraph becomes more unified; the first paragraph describes the basics of electrolysis, the second paragraph describes HDC, and the third paragraph describes the control of electrochemical reduction. Although most of the added content is fully explained, some concepts, such as electrolytic cell and inceranation, should be further explained or hyperlinked to other Wiki articles.
The contents are written in a style that is concise and easy to follow along. There is no off-topic or redundant information that disrupts the flow of the article. There are no run-on sentences, but several long sentences can be improved by proper use of comma. There is one instance of close paraphrasing in the second paragraph (4th sentence) to source 2, which could be avoided by changing the sentence structure.
The added content maintains neutral perspective. All main ideas are supported by reliable sources, such as scientific journals and textbooks, and there is balanced coverage from all four sources. There is one unsourced statement in the second paragraph (“Current research focuses on HDC”). Since this statement is difficult to give proof of, it could be changed to “HDC is a type of reductive dechlorination that is useful due to its high reaction rate”, which is much easier to cite. --Jipark97 (talk) 07:16, 9 November 2017 (UTC)
- ^ Li, Tie; Farrell, James (1 January 2000). "Reductive Dechlorination of Trichloroethene and Carbon Tetrachloride Using Iron and Palladized-Iron Cathodes". Environmental Science & Technology. 34 (1): 173–179. doi:10.1021/es9907358. ISSN 0013-936X. Retrieved 27 September 2017.
- ^ Cheng, I. Francis; Fernando, Quintus; Korte, Nic (1 April 1997). "Electrochemical Dechlorination of 4-Chlorophenol to Phenol". Environmental Science & Technology. 31 (4): 1074–1078. doi:10.1021/es960602b. ISSN 0013-936X. Retrieved 27 September 2017.
- ^ Aulenta, Federico; Catervi, Alessandro; Majone, Mauro; Panero, Stefania; Reale, Priscilla; Rossetti, Simona (1 April 2007). "Electron Transfer from a Solid-State Electrode Assisted by Methyl Viologen Sustains Efficient Microbial Reductive Dechlorination of TCE". Environmental Science & Technology. 41 (7): 2554–2559. doi:10.1021/es0624321. ISSN 0013-936X. Retrieved 27 September 2017.