The phrase "a separate section on" is correct and usable in written English.
It can be used when referring to a distinct part of a document or text that focuses on a specific topic.
Example: "In the report, there is a separate section on the environmental impact of the project."
Alternatives: "an individual segment regarding" or "a distinct part about".
Google's bi-annual report usually contains a separate section on government requests for content to be removed from search results.
The regulator said it would beef up its assessment of dementia care and that future hospital reports would include a separate section on the subject.
The Sports report will go into the section that begins with Business Day, on Tuesdays through Fridays, while Sports will remain a separate section on weekends and on Mondays.
It was the first cocktail in what Mr. Adams called a collection of "herbaceous" drinks, a line including thyme, basil, tarragon and rosemary cocktails that are featured in a separate section on a specialty-drink menu.
Also, a separate section on Interventional Oncology has been added.
On Unthink, there's a separate section on users' profile pages just for communicating with businesses.
A separate section of the exhibition, on view in the lobby gallery of the Deutsche Bank building next door, is devoted to architecture.
That document contained a footnote -- in a separate section of the report, on another subject -- noting that State Department experts were doubtful of the claims that Mr. Hussein had sought uranium.
The gently worn clothes will be resold on a separate section of the website, while those that were worn a little less than gently are donated to charity.
The owner, Steve, lives aboard in a separate section of the boat and is on hand to provide breakfast, drinks and local information.
A separate section of the same coast road collapsed on 17 October after strong winds combined with a high tide.
