An integrated approach for the HCl and metals recovery from waste pickling solutions: pilot plant and design operations

Gueccia, Rosa; Winter, Daniel; Randazzo, Serena; Cipollina, Andrea; Koschikowski, Joachim; Micale, Giorgio Domenico Maria

doi:10.1016/j.cherd.2021.02.016

Cited by 23 publications

(21 citation statements)

References 27 publications

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“…In Figure 1, a schematic representation of the integrated system is shown. This process representation is adapted from the process flow diagram published in the authors' previous work [6]. The waste acid solution is extracted from the pickling bath and sent to the Diffusion Dialysis (DD) unit.…”

Section: Process Modelling Platformmentioning

confidence: 99%

“…hot-dip galvanizing company in Carini (Sicily, Italy). Detailed characteristics of the process and the pilot system are reported in the authors' previous work [6].…”

Section: Process Modelling Platformmentioning

confidence: 99%

“…The process feasibility was studied and proposed in previous authors' works. Process design was carried out by adopting an earlier developed process simulator [3] and relevant experimental evidence was demonstrated both at laboratory and pilot scale [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Economic Benefits of Waste Pickling Solution Valorization

Gueccia

Bogle²,

Randazzo

et al. 2022

Membranes

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An integrated hybrid membrane process, composed of a diffusion dialysis (DD), a membrane distillation (MD) and a reactive precipitation unit (CSTR), is proposed as a promising solution for the valorization and onsite recycling of pickling waste streams. An economic analysis was performed aiming to demonstrate the feasibility of the developed process with a NPV of about EUR 40,000 and a DPBP of 4 years. The investment and operating costs, as well as the avoided costs and the benefits for the company operating the plant, were analyzed with an extensive cost tracking exercise and through face-to-face contact with manufacturers and sector leaders. A mathematical model was implemented using the gPROMS modelling platform. It is able to simulate steady state operations and run optimization analysis of the process performance. The impact of key operating and design parameters, such as the set-point bath concentration and the DD and MD membrane areas, respectively, was investigated and the optimal arrangement was identified. Finally, operating variables and design parameters were optimized simultaneously in a nonlinear framework as a tradeoff between profitability and environmental impact. We show how the integration of new technologies into the traditional pickling industry could provide a significant benefit for the issues of process sustainability, which are currently pressing.

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Section: Process Modelling Platformmentioning

confidence: 99%

“…hot-dip galvanizing company in Carini (Sicily, Italy). Detailed characteristics of the process and the pilot system are reported in the authors' previous work [6].…”

Section: Process Modelling Platformmentioning

confidence: 99%

See 1 more Smart Citation

Economic Benefits of Waste Pickling Solution Valorization

Gueccia

Bogle²,

Randazzo

et al. 2022

Membranes

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“…The key element of a diffusion-dialysis based acid-recovery system is an anion-exchange membrane, which has a high acid permeability and can retain metal cations [ 5 ]. In recent years, the synthesis of new membranes and the modification of known materials are the main directions in the development of DD [ 6 , 7 , 8 , 9 ], together with module structure optimization [ 10 , 11 ] and researching new applications [ 12 , 13 , 14 , 15 ]. Currently, “plate-and-frame” is the most commonly used membrane module geometry; however, the space-saving characteristics and modular nature of spiral-wound DD membrane modules have attracted much attention [ 4 , 11 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Recovery of Hydrochloric Acid from Industrial Wastewater by Diffusion Dialysis Using a Spiral-Wound Module

Merkel

Čopák

Голубенко

et al. 2022

IJMS

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In the present study, the possibility of using a spiral-wound diffusion dialysis module was studied for the separation of hydrochloric acid and Zn2+, Ni2+, Cr3+, and Fe2+ salts. Diffusion dialysis recovered 68% of free HCl from the spent pickling solution contaminated with heavy-metal-ion salts. A higher volumetric flowrate of the stripping medium recovered a more significant portion of free acid, namely, 77%. Transition metals (Fe, Ni, Cr) apart from Zn were rejected by >85%. Low retention of Zn (35%) relates to the diffusion of negatively charged chloro complexes through the anion-exchange membrane. The mechanical and transport properties of dialysis FAD-PET membrane under accelerated degradation conditions was investigated. Long-term tests coupled with the economic study have verified that diffusion dialysis is a suitable method for the treatment of spent acids, the salts of which are well soluble in water. Calculations predict significant annual OPEX savings, approximately up to 58%, favouring diffusion dialysis for implementation into wastewater management.

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“…Owing to the positively charged polymer matrix surrounding the pores, diffusion of cations, such as Fe 2+ , Fe 3+ , Cu 2+ or Pb 2+ slows down in the AEM-matrix, making it possible to achieve higher selectivity coefficients [6]. In recent years, development of DD has focused on the synthesis of new membranes and modifications to known materials [12][13][14][15], optimization of module structure [16,17], expanding known applications and researching potential new applications [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Recovery of Spent Sulphuric Acid by Diffusion Dialysis Using a Spiral Wound Module

Merkel

Čopák

Dvořák

et al. 2021

IJMS

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In this study, we assess the effects of volumetric flow and feed temperature on the performance of a spiral-wound module for the recovery of free acid using diffusion dialysis. Performance was evaluated using a set of equations based on mass balance under steady-state conditions that describe the free acid yield, rejection factors of metal ions and stream purity, along with chemical analysis of the outlet streams. The results indicated that an increase in the volumetric flow rate of water increased free acid yield from 88% to 93%, but decreased Cu2+ and Fe2+ ion rejection from 95% to 90% and 91% to 86%, respectively. Increasing feed temperature up to 40 °C resulted in an increase in acid flux of 9%, and a reduction in Cu2+ and Fe2+ ion rejection by 2–3%. Following diffusion dialysis, the only evidence of membrane degradation was a slight drop in permselectivity and an increase in diffusion acid and salt permeability. Results obtained from the laboratory tests used in a basic economic study showed that the payback time of the membrane-based regeneration unit is approximately one year.

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An integrated approach for the HCl and metals recovery from waste pickling solutions: pilot plant and design operations

Cited by 23 publications

References 27 publications

Economic Benefits of Waste Pickling Solution Valorization

Economic Benefits of Waste Pickling Solution Valorization

Recovery of Hydrochloric Acid from Industrial Wastewater by Diffusion Dialysis Using a Spiral-Wound Module

Recovery of Spent Sulphuric Acid by Diffusion Dialysis Using a Spiral Wound Module

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