▶ Your Answer :
In the reading passage, there is ample support for the author's claim that many methods are under the process that using coal without any harmful effects to the environment. The professor in the lecture gives several reasons as a rebuttal to the author's point.
First, the professor in the lecture insists that gasification is not beneficial to the environment. For example, the process, which is converting coal into gas is needed high heat. And during this process, enormous amount of fossil fuel is brought about that causes harmful effect to the areas. Also, this process requires significant amount of water to remove all of the impurities. This casts doubt on the reading passage's claim that gasification changes the coal into a non-harmful substance because all of impurities are deleted in the process.
Next, the professor in the lecture argues that using static electricity isn't good use of coal. To be specific, extracting the pollutants can cause ash particle. It can lead to increasing the level of CO2 and it also can set off devastating effect on climate change. This counters the reading passage's assertion that exploiting the form of static electricity is the good alternative method because during the process, the devastating resources are extracted.
Finally, the professor in the lecture contends that using fabric filters are not a good option to decrease the harmful effects. To be specific, this method requires higher cost of maintenance. Therefore, Its total cost must diminish the overall efficiency in the long run. This refutes the reading passage's suggestion that fabric filter can reduce negative coal's impact because coal emissions are filtered during this process. |