کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
640989 1456987 2014 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Facile recovery of acetic acid from waste acids of electronic industry via a partial neutralization pretreatment (PNP) – Distillation strategy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Facile recovery of acetic acid from waste acids of electronic industry via a partial neutralization pretreatment (PNP) – Distillation strategy
چکیده انگلیسی


• Novel PNP-distillation strategy was put forward in recovery of HAc from waste acid.
• Pure HAc with a recovery rate of 94.3% was obtained under optimal condition.
• This strategy has the merits of being simple, reproducible, and easy to scale-up.

In recent years, attention on treatment of industrial waste acids has been increasing considerably due to enforcement of the environmental regulations as well as economical considerations about the waste acids. In this paper, a novel approach for recovery of acetic acid (HAc) from electronic industrial waste acids, containing about 58 wt.% of HAc, 39 wt.% of nitric acid (HNO3), 3 wt.% of phosphoric acid (H3PO4), and small amount of hydrochloride acid (HCl) and hydrofluoride acid (HF), was developed using partial neutralization pretreatment (PNP)-distillation strategy. The effects of distillation time, types of alkali for neutralization and oil bath temperature on recovery of HAc were systematically studied. It was found that HAc can be efficiently recovered from the waste acids with a yield of 94.3% (purity 99.4%) under optimal conditions. The treatment scheme for HAc recovery from waste acids is featured by feasibility, reproducibility and massive productivity.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 132, 20 August 2014, Pages 23–26
نویسندگان
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