Recent advances in the monitoring, modelling and control of crystallization systems

ZK Nagy, G Fevotte, H Kramer, LL Simon - Chemical Engineering Research …, 2013 - Elsevier
Crystallization is one of the most important unit operations used for the separation and
purification of crystalline solid products. Appropriate design and control of the crystallization …

Advances and new directions in crystallization control

ZK Nagy, RD Braatz - Annual review of chemical and …, 2012 - annualreviews.org
The academic literature on and industrial practice of control of solution crystallization
processes have seen major advances in the past 15 years that have been enabled by …

Exploring the potential of time-series transformers for process modeling and control in chemical systems: an inevitable paradigm shift?

N Sitapure, JSI Kwon - Chemical Engineering Research and Design, 2023 - Elsevier
The last two years have seen groundbreaking advances in natural language processing
(NLP) with the advent of applications like ChatGPT, Codex, and ChatSonic. This revolution …

Population balance modeling: current status and future prospects

D Ramkrishna, MR Singh - Annual review of chemical and …, 2014 - annualreviews.org
Population balance modeling is undergoing phenomenal growth in its applications, and this
growth is accompanied by multifarious reviews. This review aims to fortify the model's …

Introducing hybrid modeling with time-series-transformers: A comparative study of series and parallel approach in batch crystallization

N Sitapure, J Sang-Il Kwon - Industrial & Engineering Chemistry …, 2023 - ACS Publications
Given the hesitance surrounding the direct implementation of black-box tools due to safety
and operational concerns, fully data-driven deep-neural-network (DNN)-based digital twins …

First-principles and direct design approaches for the control of pharmaceutical crystallization

M Fujiwara, ZK Nagy, JW Chew, RD Braatz - Journal of Process Control, 2005 - Elsevier
Crystallization is the main separation and purification process for the manufacturing of drug
substances. Not only does crystallization affect the efficiency of downstream operations such …

Robust nonlinear model predictive control of batch processes

ZK Nagy, RD Braatz - AIChE Journal, 2003 - Wiley Online Library
NMPC explicitly addresses constraints and nonlinearities during the feedback control of
batch processes. This NMPC algorithm also explicitly takes parameter uncertainty into …

Overview of secondary nucleation: From fundamentals to application

S Xu, Z Hou, X Chuai, Y Wang - Industrial & Engineering …, 2020 - ACS Publications
Secondary nucleation can bring the crystallization process into a more easily controlled
state, and it is playing an important role in controlling crystal size distribution, polymorphism …

Paracetamol crystallization using laser backscattering and ATR-FTIR spectroscopy: metastability, agglomeration, and control

M Fujiwara, PS Chow, DL Ma… - Crystal Growth & Design, 2002 - ACS Publications
A systematic approach is developed for the in situ control of the crystal size distribution, and
is applied to the aqueous crystallization of paracetamol (acetaminophen) as a model …

The impact of direct nucleation control on crystal size distribution in pharmaceutical crystallization processes

MR Abu Bakar, ZK Nagy, AN Saleemi… - Crystal Growth and …, 2009 - ACS Publications
The control of crystal size distribution (CSD) in pharmaceutical crystallization is of primary
importance, as downstream processes such as filtration or drying are greatly affected by the …