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您的检索式：作者名="Bryan Butter"
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| 1 | Electrochemical reduction of Cr(Ⅵ)in the presence of sodium alginate and its application in water purification显示文摘Chromium(Cr)is used in many manufacturing processes,and its release into natural waters is a major environmental problem today.Low concentrations of Cr(Ⅵ)are toxic to human health and living organisms due to the carcinogenic and mutagenic nature of this mineral.This work examined the conversion of Cr(Ⅵ)to Cr(Ⅲ)via electrochemical reduction using gold electrode in an acidic sodium alginate(SA)solution and subsequent removal of the produced Cr(Ⅲ)-SA by the polymer-enhanced ultrafiltration(PEUF)technique.A solution of SA in nitric acid was used both as an electrolytic medium during the voltammetric measurements and bulk electrolysis and as an extracting agent during the PEUF technique.The electroanalysis of Cr(Ⅵ)was performed by linear sweep voltammetry in the presence of acidic SA solution to study its voltammetric behavior as a function of the Cr(Ⅵ)concentration,pH,presence of Cr(Ⅲ),SA concentration and scan rate.In addition,the quantitative reduction of Cr(Ⅵ)to Cr(Ⅲ)was studied through the bulk electrolysis technique.The results showed efficient reduction with well-defined peaks at approximately 0.3 V vs.Ag/AgCl,using a gold working electrode.As the pH increased,the reduction signal strongly decreased until its disappearance.The optimum SA concentration was 10 mmol/L,and it was observed that the presence of Cr(Ⅲ)did not interfere in the Cr(Ⅵ)electroanalysis.Through the quantitative reduction by bulk electrolysis in the presence of acidic SA solution,it was possible to reduce all Cr(Ⅵ)to Cr(Ⅲ)followed by its removal via PEUF. | Bryan Butter Paola Santander Guadalupe del CPizarro Diego POyarzún Federico Tasca Julio Sánchez | 2021 | Journal of Environmental Sciences2021，33，3： | 1 |
| 2 | 天作之合显示文摘沃尔沃汽车集团(Volvo Car Group)的首席执行官汉坎·萨缪尔森(Hakan Samuelsson)坐在斯德哥尔摩郊区一栋房子的主卧室里,他和这栋房子的主人素未谋而。他的公司租下了这栋由浅色木板和白墙构成的现代主义风格的三层楼房,用来为沃尔沃的新款旅行车V60做媒体介绍。 | Bryan Gruley Jamie Butters Ka Xiaoxi(摄影) 孙昊然(译) 杨飞(译) | 2018 | 商业周刊(中文版)2018，0，15： | 0 |
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