Advanced pH Measurement and Control by Gregory K. McMillan PDF

By Gregory K. McMillan

ISBN-10: 1934394432

ISBN-13: 9781934394434

This best-selling booklet presents a transparent, concise, and entire view of ways to pick, set up, and keep electrodes, keep an eye on valves, and regulate thoughts for pH functions severe for product and water caliber within the method undefined. The booklet covers each point of method layout together with the blending and reagent piping requisites which are very important for a winning application.
The crucial techniques are summarized as key insights and the easiest practices are awarded as principles of thumb through the e-book. The rising power of dynamic on-line pH estimators is explored to make present pH measurements swifter and extra trustworthy. the newest advancements in complicated batch keep an eye on, adaptive keep watch over, linear reagent call for keep watch over, and version predictive keep an eye on are provided to lessen reagent intake and variability.
Этот бестселлер обеспечивает четкое, краткое, и полное представление о том, как выбрать, установить и поддерживать электроды, регулирующие клапаны и стратегию борьбы с измерением рН, решающее значение для качества продукта и воды в обрабатывающей промышленности. Книга охватывает все аспекты проектирования систем, в том числе и требования смешивания реагентов трубопроводов, которые важны для успешного применения. Важнейшие концепции можно резюмировать ключевые идеями и лучшими практиками, представленных в виде эмпирических правил на протяжении всей книги. Возникающие возможности динамического измерения рН изучены, чтобы сделать существующие измерения рН более быстрыми и надежными. Последние события в расширенный контроля, адаптивного управления, линейное управление подачи реагента и модели интеллектуального управления представлены для уменьшения расхода реагентов и изменчивости.

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Extra info for Advanced pH Measurement and Control

Sample text

2. Determination of pH 11Irory and Pradi'f, John Wiley and Sons, 1964. , Physical Chl'lPlistry, 3rd edition, Prentice-Hall , 1962. , Chemical Equilibrium, Harper & Row, 1966. Dean, John, u mgf's Ha'ldbook of Chmristry, 14th edition, McGraw- Hill Book Company, 1992. 3. 4 . 5. 6. , "Compu ter Series 158 · PHCALC: A Comp uter Program for Acid ! BaS(-' Equilibrium Ca lcu lations", Journal of Chemical Educat ion, Volume 71 , Num· ber 2, February 1994. 7. , pH and piON Control in Process and Waste Strt'lll/ls, John Wiley an d Sons, 1973.

If no other ions are in th e so lution, charge neutrality d emands th at th e hyd rogen ion concen tration equal the hydroxyl ion concentration. If other ions are in so lution, the sum of each ion concentration multiplied by its charge (normality) must equal zero. This is fortunate because it permits the use of an interval-halving search method to iteratively search for th e pH for a given set of ion concen trations that makes the charge balance zero. The excess cha rge is calculated for th e pH guess at the m idpoint of the p H search interval.

Ry to designate which stream is the source of the acid or base and which stream is the destination to form a mixtu re. To red uce confus ion in Equa tions 2-1g through 2-11, the subscript " t t " will designate the concentration of the acid or base reagent in the effl uent stream; "re" will designate the concentration of the acid or base reagent in the effl uent; "ii" will designate the concentra tion of the incoming acid or base in the influent stream: and "ie" will designate the concentra tion of the incoming acid or base in the effluent th roughout the text.

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Advanced pH Measurement and Control by Gregory K. McMillan


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