Life Cycle Sustainability Assessment of DMSO Solvent Recovery from Hazardous Waste Water (original) (raw)
Related papers
LIFE CYCLE ASSESSMENT OF DMSO SOLVENT, COMPARING AN OPEN MANUFACTURING SYSTEM WITH A CLOSED ONE
This paper has been elaborated during the project called " DMSO contaminated industrial waste water recycling by distillation " which action connects to the Hungarian water quality improvement program. The dimethyl sulfoxide (DMSO) is frequently used as a solvent for chemical reactions and is also extensively used as an extractant in biochemistry and cell biology. It is known as environmental friendly solvent, and the DMSO can be efficiently recovered from aqueous solutions – even though contaminated with volatile and/or non-volatile impurities – by distillation due to its high boiling point (189 C). This paper compares two technologies an open and closed system from viewpoint of sustainability, by LCA, in which the DMSO used as solvent, and it was recovered.
Separation Science and Technology, 2018
In this paper, two waste solvent technologies are presented as alternatives to the disposal of spent acetone-water mixtures. In the first alternative, a batch rectifier is used to concentrate the waste in order to obtain a distillate with a higher calorific value, which is then sent to off-site incineration either in a cement kiln or in a conventional waste solvent incinerator. The second alternative is a hybrid process composed by a batch rectifier and a pervaporation unit that processes in batchwise mode the first cut from the distillation task to obtain a dehydrated solvent. Here, four scenarios are considered, comprising two kinds of membrane materials and two different vacuum systems. For each alternative, the conceptual design was carried out with the aid of conceptual models of the unit operations involved. Quasi-optimal values for design and operation variables were used as input data to perform an economical and an environmental assessment of each alternative. The economic analysis suggests that the hybrid process is the best alternative given that the replacement cost of fresh solvent (about 850 U$S/ton) is considered as a credit value. From the environmental analysis with life cycle assessment, two main conclusions can be drawn: i) the use of the distillate as an alternative fuel in a cement kiln leads to a reduction in emissions that is relevant for the categories related to human health and ecosystem quality; and ii) in terms of resource depletion, the hybrid process distillation/pervaporation with the ceramic membrane HybSi (Pervatech) shows the lowest impact due to the solvent recovery.
Novel method for reuse of process wastewater based on distillation
2017
The industrial production unavoidably generates waste in many cases and that should be recycled and reused following the principle of circular economy. New method or process should be developed usually for solving this problem. Pharmaceutical industry has a typical example, since these plants generate wastewaters with high organic content in significant quantities, so-called process wastewater. These waters should be treated definitely before discharge, so that the organic content must be removed and then the process wastewater may be allowed into the sewer. Nowadays, the physicochemical methods are used increasingly, which are unlike the biological treatments, they have a smaller footprint and the polluting organic substances can be recycled and/or reused. In our case distillation is applied, that is based on relative volatility of the individual components. During this method, the volatile organic polluters of treated process wastewaters are obtained as the top product of distillation, in reusable form. The bottom product of distillation, namely the process wastewater can satisfy the sewer regulations. Our innovative method is made to remove and reuse organically bound halogens (AOX) from process wastewaters and it provides its task precisely until today. This planned industrial apparatus is served the Sustainable Water Solutions and Circular Economy, in fact it should be highlighted separately the payback time of the investment is less than two years.
Environmental and economic comparison of waste solvent treatment options
Central European Journal of Chemistry, 2006
The sustainable development and consumption need more efficient use of natural resources. As a consequence, the use of industrial solvents demands their recovery instead of end-of-pipe treatment. It is not always clear, however, which treatment alternative should be applied. Based on an industrial case study, the environmental and economic evaluation and comparison of the treatment alternatives of a non-ideal solvent
Advances in water treatment by adsorption technology
Nature Protocols, 2007
Among various water purification and recycling technologies, adsorption is a fast, inexpensive and universal method. The development of low-cost adsorbents has led to the rapid growth of research interests in this field. The present protocol describes salient features of adsorption and details experimental methodologies for the development and characterization of low-cost adsorbents, water treatment and recycling using adsorption technology including batch processes and column operations. The protocol describes the development of inexpensive adsorbents from waste materials, which takes only 1-2 days, and an adsorption process taking 15-120 min for the removal of pollutants. The applications of batch and column processes are discussed, along with suggestions to make this technology more popular and applicable.
The Potentiality of Reuse Industrial Waste for Diverse Water Treatment -An Overview
Sustainable Chemical Engineering
The proliferation of different pollutants in waters caused by anthropogenic and industrial activities has become a significant global concern, as they cause many problems, like severe health and environmental harm. Searching for green materials for water removal entirely and efficiently in this context is challenging. In this sense, innovative materials based on industrial waste become an incredible alternative, as they are waste, disposable incorrect in the environment, low-cost, and need to be adequately discharged. Many innovative materials based on industrial waste were performed in the literature, as these eco-friendly alternatives have great potential for many applications, including wastewater treatment. This overview presents various research that demonstrated different innovative materials based on industrial waste, their physicochemical properties, different properties, the adsorption removal, and other wastewater treatment reported based on different models. Based on the ...
Arsenic removal from water using a new class of materials with adsorbent properties
International Journal of Environmental Impacts: Management, Mitigation and Recovery, 2019
One of the strategies for sustainable development is to promote a quality health care system, available to all without discrimination, and improving protection against health threats. In this context, arsenic removal from groundwater for drinking purposes presents challenges at national and global levels. Thus, the present article focuses on removing arsenic from groundwaters by using a new class of materials based on cellulose modified with crown ether (dibenzo-18-crown-6) doped with iron ions. Using such extractants involves only a small amount of crown ether, indicating higher efficiency of produced material, and in order to improve the adsorbent properties and selectivity for arsenic removal, the modified cellulose was functionalized with iron ions. The new adsorbent material was characterized by using energy-dispersive X-ray analysis and Fourier-transform infrared spectroscopy. To investigate its adsorption properties for arsenic removal, equilibrium, kinetic and thermodynamic studies were performed. Arsenic adsorption from water onto new class of adsorbent material was studied under different experimental conditions such as reaction time, initial arsenic concentration and temperature. Kinetic of adsorption process was better described by pseudo-second-order model. The equilibrium adsorption data were well described by the Sips adsorption isotherm. The values of thermodynamic parameters (ΔGº, ΔHº, ΔSº) showed that the adsorption process was endothermic and spontaneous. The possibility of reuse of the adsorbent material through adsorption and desorption cycles was also studied, and it was found that the material can be used in three adsorption-desorption cycles.
2019
Discharges from electroplating industries, which are implementing chemical and electrolytic liquid medium, contain strong agents of pollution harmful to the environment. There are growing fears concerning environmental protection. These industries are inspected more stringent in their effluents, particularly concerning the release of highly toxic heavy metals. European recommendation defined because the limit loads very strictly. For cadmium, for example, the MAC (maximum allowable concentration) is set at 0.1 ppm. The concerned companies are facing great difficulties to meet these specifications, either by using conventional purification techniques (such as ion exchange). To reduce the negative effects, several treatment processes, including physico-chemical, are implemented. In particular the adsorption process. The study performed on the total discharge, we were interested in this work to the current treatment rinses out plating baths, this is the aim to optimize the treatment pr...
The Environmental Sustainability Assessment of the adsorption and ion-exchange processes for arsenic removal was the focus of this work. The pursued goals were to determine the impact of regenerating the activated alumina used as adsorbent and the comparison of the environmental performance of two ion-exchange resins. Additional goals were the comparison between the environmental performance of adsorption and ion-exchange processes and the evaluation of the effect of integrating the proposed techniques on a water purification facility. The Life Cycle Inventory was obtained by means of simplified models and simulation. In this work it was concluded that the removal of As(V) by adsorption consumed between 2 and 13 times more primary resources and created 3−17 times more environmental burdens than the ion-exchange process. The integration of adsorption or ion-exchange technology in the drinking water plant would raise the primary consumption of energy, materials, and water by 27−155%, 7−94%, and 0.48−5.3%, respectively. The increase in the environmental burdens was mainly because of the generation of hazardous spent materials.
Removal Of Arsenic In Aqueous Solution By Low Cost Adsorbent: A Short Review
International Journal of ChemTech Research
The presence of arsenic in waters, especially groundwater, has become a worldwide problem in the past decades. High arsenic concentrations have been reported recently from the Argentina,. Among 21 th countries in different parts of the world affected by groundwater arsenic contamination, the largest population at risk is in Bangladesh followed by West Bengal in India. There are numbers of arsenic removal methods, which include coagulation followed by precipitation, membrane separation, anion exchange, etc.Arsenic pollution has emerged as a serious public health concern in Pakistan also. The use of low-cost adsorbent obtained from an environmentally friendly materials, has been investigated as a replacement for the current expensive methods of removing arsenic from solution. Some low-cost adsorbents are superior including treated slags, carbons developed from agricultural waste, biosorbents, goethite and some commercial adsorbents, which include resins, gels, silica, treated silica t...