Nobody's perfect and everybody makes mistakes sometimes. We apologize to the author and to our readers for the mistake in the article: Method for Predicting the pH of Boiler Water at Actual Temperatures Kenichi ItoPPCHEM 2025, 27(5), 264–274 The Figure 7 on page 268 is incorrect. "pH' = pH+0.1" was incorrectly written as "pH' = pH+0.01". Please find the […]
150 participants, 17 nations, 23 presentations, 21 exhibitors and 3 sponsors – this is how this year's vgbe Conference Chemistry can be summarised in a nutshell, but the varied programme and intensive exchange offered much more than these figures suggest. The vgbe chemistry community met for the 61st time to discuss current challenges and look […]
ABSTRACT We provide evidence for the almost exclusive detection of oxalate (C2O42–) and phosphate (PO43–) in the low-pressure (LP) saturated steam during an eight-month period involving commissioning and commercial operation of a new triple-pressure circuit combined cycle plant with a feed-forward LP drum. This interval coincided with a period in which the antiscalant dosage into […]
ABSTRACT Calcium carbonate scaling (CaCO₃) is a persistent challenge that has plagued water heating and industrial heat exchange systems since ancient times. This paper reviews the fundamental chemical interactions between natural water sources and carbonate minerals that lead to scale formation and shows how environmental conditions, temperature effects, and operational factors influence saturation and deposition. […]
With Issue 6/2025, PPCHEM® is publishing its final printed edition. After more than 26 years, the familiar yellow journal – launched in July 1999 as the PowerPlant Chemistry® journal – is closing its print chapter. Over more than a thousand articles, the journal has become a trusted scientific and technical resource for professionals around the […]
ABSTRACT Industrial plant operators are constantly seeking cost-effective and readily available sources of makeup water. Nevertheless, the utilization of a low-cost water source does not guarantee a reduction in overall operational costs. It is evident that water sources which are less expensive and more readily available tend to be lower in quality and more difficult […]
November 17, 2025by P. R. Tremaine, R. Gupta, B. Dooley, and D. W. Shoesmith The Canadian and American Committees for the Properties of Water and Steam mourn the loss of Professor Digby D. Macdonald, who passed away on June 11, 2025, at the age of 81, at the UC Davis Hospital in Sacramento, CA, USA. […]
ABSTRACT Normally, the pH of boiler water is controlled based on the pH at 25°C. However, since the dissociation constants of water, acid components, and alkaline components vary with temperature, the pH behaviour at high temperatures differs significantly from that at 25°C. The author developed a calculation program using the Microsoft Excel® macro function Visual […]
ABSTRACT Hydrazine is used in water-steam cycles of pressurized water reactors to protect the steam generators by generating reducing and oxygen-free conditions. However, growing regulatory and environmental concerns about its toxicity and mutagenic properties are leading to actions to restrict it or completely phase it out. Additionally, the declining availability of nuclear-grade hydrazine has led […]
The eleventh annual IAPWS European HRSG Forum was held on the 13th – 15th May 2025 in Prato, Italy. It was chaired by Barry Dooley of Structural Integrity and Bob Anderson of Competitive Power Resources. EHF2025 attracted 95 participants from 20 countries and included 27 users.
