Sustainable technologies for water purification from heavy metals: review and analysis

2019 ◽  
Vol 48 (2) ◽  
pp. 463-487 ◽  
Author(s):  
Sreenath Bolisetty ◽  
Mohammad Peydayesh ◽  
Raffaele Mezzenga

We review and analyze current water purification technologies in the context of sustainability, and we introduce the Ranking Efficiency Product (REP) index, to evaluate their efficiency and implementation in this broader perspective.

2017 ◽  
pp. 1-20
Author(s):  
Alexander E. Burakov ◽  
Irina V. Burakova ◽  
Evgeny V. Galunin ◽  
Anastasia E. Kucherova

2020 ◽  
Vol 2 (7) ◽  
pp. 2824-2834 ◽  
Author(s):  
Paresh Kumar Samantaray ◽  
Sushma Indrakumar ◽  
Kaushik Chatterjee ◽  
Vipul Agarwal ◽  
Suryasarathi Bose

Molybdenum disulfide (MoS2), with its unique optical and electrical properties, has been explored for a variety of applications in the recent past.


2010 ◽  
Vol 32 (2) ◽  
pp. 95-100
Author(s):  
V. V. Goncharuk ◽  
T. Yu. Dul’neva ◽  
D. D. Kucheruk

2019 ◽  
Vol 8 ◽  
pp. 104-108
Author(s):  
Svetlana Stepanova ◽  
Galina Simonova

The method of water purification from lead ions using a natural water purifier – eichornia is considered. Quantitative estimates of changes in the concentration of impurities depending on the time of purification were carried out.


Author(s):  
Mara Regina de Oliveira ◽  
Hubert Mathias Peter Roeser ◽  
Adolf Heinrich Horn

Este trabalho teve como objetivo, a investigação das concentrações de metais pesados selecionadosem sedimentos de fundo em riachos do Parque Estadual Itacolomi e arredores na região de Ouro Preto,Minas Gerais. A água destes riachos é largamente utilizada pela população ribeirinha, levando estaspessoas a uma situação de vulnerabilidade a qualquer alteração da água. Foram investigados os elementosCd, Cr, Cu, Ni, Pb e Zn. As amostras foram coletadas seguindo a metodologia proposta pela CETESB(1988) e analisadas em um aparelho de espectrometria de emissão atômica do Laboratório deGeoquímica Ambiental do Departamento de Geologia da Universidade Federal de Ouro Preto, M.G.Os resultados mostram que os principais carreadores dos elementos traços nos sedimentos são materialorgânico, minerais argilosos e oxidos e hidroxidos de Al, Fe e Mn. Para se avaliar a existência devalores anômalos de metais traços no sedimento de corrente na área, recorreu-se ao método docálculo do fator de contaminação (F.C.) de cada elemento analisado. Os resultados demonstram que ocádmio tem concentração alta em alguns pontos da área de estudo, caracterizando alguns locais comconcentrações anômalas deste elemento, não podendo se afirmar que se trata de intervenção antrópica.Os outros metais apresentam baixo fator de contaminação, caracterizando a área em estudo comonão anômala para estes metais e suas principais fontes, são as rochas quartzíticas da FormaçãoCercadinho e do Grupo Itacolomi e dos xistos do Grupo Sabará.AbstractThe aim of this work was to investigate the concentration of selected heavy metals in sediments ofthe bottom of rivers in Itacolomi State Park and surroundings, near the city of Ouro Preto, MinasGerais. The water of these rivers and streams is widely used by riverside populations, which let thesepeople vulnerable to water quality alterations. The water of these rivers is important for the provisioningof the population and therefore sensitive to any contamination. The elements Cd, Cr, As, Ni, Pb andZn were investigated. The samples were collected following international standard procedures andanalyses were done by optical atomic emission spectroscopy in the Laboratório Geoquímica Ambiental/Universidade Federal de Ouro Preto, Minas Gerais. The results show that the main carriers of theelements in the sediments are organic material, clay minerals and oxides and hydroxides of Al, Fe andMn.To evaluate abnormal values of trace metals in current water sediments on the area, we used thecalculus of contamination factor method for each element studied. Results show that Cd has highconcentrations in some points of the studied area, characterizing some places with abnormalconcentrations of this element, but it can not be assured that this is caused by antropic action. Othermetals shows low contamination factor, characterizing the studied area as not abnormal for thesemetals, and their main sources are quartzical rocks of Cercadinho formation, Itacolomi Group, andGroup Sabará schists.


2019 ◽  
pp. 393-412
Author(s):  
Alexander E. Burakov ◽  
Irina V. Burakova ◽  
Evgeny V. Galunin ◽  
Anastasia E. Kucherova

2020 ◽  
Vol 611 ◽  
pp. 118205 ◽  
Author(s):  
Mohammad Peydayesh ◽  
Toraj Mohammadi ◽  
Sohail Kordmirza Nikouzad

Author(s):  
Minoru Satoh

The amounts of “Electronic wastes” including heavy metals are increasing day by day. Such waste is in the rich resource of various metals having the precious metals. Therefore, these wastes are considered as urban mine, if people successfully can separate them to each source. In sustainable viewpoints, separation technologies applied for such electronics waste are essential and important to efficiently recover various metals at a low concentration from these sources. This chapter reviews functional adsorbents made of polymers, ionic liquid, and dendrimer. Also, membrane technology is introduced as separation toll for heavy metals. Among them, topics of phytoremediation are made as an effective sustainable method, utilizing certain plants to clean up the environmental contaminants. Here, plants are able to remove harmful chemicals such as metals, which are present in the soil, when their roots absorb water and nutrients from the contaminated soil, sediment and surface, or ground water. The contaminants are removed by trapping them into harvestable plant biomass. Furthermore, cleanup methods of environments and recovery of precious and rare metals are mentioned for sources of urban and submarine mines with low cost and high recovery efficiency.


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