净化湿法磷酸以生产高科技级磷酸钡盐或磷酸铵盐的连续步骤

IF 0.6 4区 化学 Q4 CHEMISTRY, APPLIED
A. H. Ali
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引用次数: 0

摘要

摘要 本研究采用批量实验来研究磷酸溶液中阳离子杂质的净化。将湿法磷酸净化成工业级磷酸的一系列步骤包括溶剂萃取、洗涤、汽提、蒸发、将生成的磷酸与两种碳(活性碳和氧化活性碳)接触 1 小时、过滤、用氨水中和酸液至 pH 7 以生成可溶性磷酸铵盐、过滤、磷酸盐溶液再次与两种碳接触 1 小时。最后,将其与 Amberlite IR 120-H- 型树脂接触,或加入硫酸以获得纯化的工业级磷酸,或生产钡盐或磷酸铵盐。研究了影响吸附过程的不同变量,包括介质酸度、振荡时间、吸附剂体积比、温度和磷酸初始浓度。研究了吸附等温线、Langmuir 等温线模型(R2 = 0.99)和 Freundlich 模型(R2 = 0.76),以评估吸附剂的最大去除效果;结果发现实验结果与 Langmuir 等温线一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Sequential Steps for Purifying Wet Processed Phosphoric Acid for Producing a High-Tech Grade and Barium or Ammonium Phosphate Salts

Sequential Steps for Purifying Wet Processed Phosphoric Acid for Producing a High-Tech Grade and Barium or Ammonium Phosphate Salts

Abstract

Batch experiments were used in this study to investigate the cleaning of phosphoric acid solution from cationic impurities. A set of steps was used to clean up wet-processed phosphoric acid to technical grade phosphoric acid, which included solvent extraction, scrubbing, stripping, evaporation, contacting the produced phosphoric acid with two types of carbon (activated carbon as received and oxidized activated carbon) for 1 h, filtration, neutralizing the acid with ammonia solution to pH 7 to produce soluble salt of ammonium phosphate, filtration, again contacting the phosphate salt solution with the two types of carbon for 1 h. Finally, contacting it with resin Amberlite IR 120-H- form or adding sulfuric acid to obtain purified technical grade phosphoric acid or producing barium or ammonium phosphate salts. Different variables that influence the adsorption process were examined, including medium acidity, shaking time, adsorbent-to-volume ratio, temperature, and phosphoric acid initial concentrations. The adsorption isotherms, the Langmuir isotherm model (R2 = 0.99), and the Freundlich model (R2 = 0.76) were studied to assess the maximal removal efficacy of adsorbents; it was found that the experimental results agreed with the Langmuir isotherm.

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来源期刊
CiteScore
1.60
自引率
11.10%
发文量
63
审稿时长
2-4 weeks
期刊介绍: Russian Journal of Applied Chemistry (Zhurnal prikladnoi khimii) was founded in 1928. It covers all application problems of modern chemistry, including the structure of inorganic and organic compounds, kinetics and mechanisms of chemical reactions, problems of chemical processes and apparatus, borderline problems of chemistry, and applied research.
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