Advances in Residuals Processing, Treatment and Disposal for Chemical and Petrochemical Industries – A Brazilian Case Study

Technological developments and their application must follow a course that is parallel with legislation and public concerns about hazardous wastes management. This paper describes and comments the practices that have been conducted at a Brazilian Petrochemical Complex for 10 years.

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Handling and Processing of Hazardous Solid Wastes From Petrochemical Industries – Cetrel's Experience

Water Science & Technology ◽

10.2166/wst.1991.0373 ◽

1991 ◽

Vol 24 (12) ◽

pp. 93-101

Author(s):

J. A. L. Passos ◽

N. M. S. Neves ◽

M. Q. Ferreira

Keyword(s):

Solid Wastes ◽

Rapid Expansion ◽

Industrial Wastes ◽

Industrial Activities ◽

Final Disposal ◽

Petrochemical Complex ◽

Operation Control ◽

Treatment And Disposal ◽

Careful Assessment ◽

Petrochemical Industries

The increasing generation of hazardous solid wastes resulting from the recent rapid expansion of various industrial activities, within the region, requires a very conscious and careful assessment to establish an appropriate alternative of final disposal of these residuals, in order to avoid deleterious effects on the environment as well as on the population. CETREL - Center of Treatment of Liquid Effluents and Special Industrial Wastes, located at Camaçari within the state of Bahia, is responsible for the operation of one of the most complete and complex systems which deals with hazardous solid wastes in Brazil, generated by approximately 50 chemical and petrochemical industries, comprising the largest Petrochemical Complex in Latin America. The main purpose of this paper is to present an overview of the system's operation for treatment and disposal of solid wastes, from initial conditioning at its generating source, up to the handling, processing and final disposal, as well as operation, control and optimization.

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Future scenarios for the development of the desalination industry in contexts of water scarcity: A Brazilian case study

Technological Forecasting and Social Change ◽

10.1016/j.techfore.2021.120727 ◽

2021 ◽

Vol 167 ◽

pp. 120727

Author(s):

Fabrícia de Souza Moreira ◽

Mariana Padilha Campos Lopes ◽

Marcos Aurélio Vasconcelos de Freitas ◽

Adelaide Maria de Souza Antunes

Keyword(s):

Water Scarcity ◽

Future Scenarios ◽

Brazilian Case

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ASU Simulation in Separating Air Components by Refrigeration Distillation (Oxygen and Nitrogen) Using ASPEN HYSYS (Case Study: SIAD Company)

Chemical Product and Process Modeling ◽

10.1515/cppm-2019-0085 ◽

2020 ◽

Vol 15 (3) ◽

Author(s):

Afshar Alihosseini

Keyword(s):

Cooling Capacity ◽

Air Separation ◽

Cooling Power ◽

Distillation Tower ◽

Aspen Hysys ◽

Expansion Turbine ◽

Gas Products ◽

Utility Services ◽

Petrochemical Industries

AbstractCurrently, air separation units (ASUs) have become very important in various industries, particularly oil and petrochemical industries which provide feed and utility services (oxygen, nitrogen, etc.). In this study, a new industrial ASU was evaluated by collecting operational and process information needed by the simulator by means of HYSYS software (ASPEN-ONE). The results obtained from this simulator were analyzed by ASU data and its error rate was calculated. In this research, the simulation of ASU performance was done in the presence of an expansion turbine in order to provide pressure inside the air distillation tower. Likewise, the cooling capacity of the cooling compartment and the data were analysed. The results indicated that expansion turbine is costly effective. Notably, it not only reduces the energy needed to compress air and supply power of the equipment, but also provides more cooling power and reduces air temperature. Moreover, turbines also increase the concentration of lighter gas products, namely nitrogen.

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A hydrochemical and isotopic case study around a near surface radioactive waste disposal

Radiochimica Acta ◽

10.1524/ract.2007.95.1.55 ◽

2007 ◽

Vol 95 (1) ◽

Author(s):

Zs. Szántó ◽

É. Svingor ◽

I. Futó ◽

L. Palcsu ◽

M. Molnár ◽

...

Keyword(s):

Radioactive Waste ◽

Waste Treatment ◽

Radioactive Waste Disposal ◽

Ion Chemistry ◽

Continuous Transition ◽

Near Surface ◽

Disposal Facility ◽

Treatment And Disposal ◽

Site Characterisation

As part of the site characterisation program for the near surface radioactive waste treatment and disposal facility (RWTDF) at Püspökszilágy, Hungary, water quality and environmental isotope investigations have been carried out. Water samples for major ion chemistry, tritium,The chemical composition of groundwaters presented a continuous transition from waters situated on one side to waters on the top and on the other slope of the disposal suggesting the mixing of the three hydrochemical “endmembers”.Most of δ

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