Adsorption of heavy metals from wastewater using agricultural–industrial wastes as biosorbents

Experiments on the real possibility of employing microorganisms to capture inorganic polluting substances, mainly heavy metals from urban and industrial wastes, are running using bacteria biomass. Many strains of Arthrobacter spp., gram-negative bacteria, diffused in the soil also inacondition of environmental stresses, have been proved to be particulary effective in heavy metal capture (Cd, Cr, Pb, Cu, Zn). The active and passive processes in accumulation of metals by bacteria were studied. Our experiments have been done on fluid biomass and on a membrane both for practical use and for an easy recovery.

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Environmental impact of the Midia Port - Black Sea (Romania), on the coastal sediment quality

Open Geosciences ◽

10.1515/geo-2016-0018 ◽

2016 ◽

Vol 8 (1) ◽

pp. 174-194 ◽

Cited By ~ 2

Author(s):

Irina Catianis ◽

Constantin Ungureanu ◽

Luca Magagnini ◽

Elisa Ulazzi ◽

Tiziana Campisi ◽

...

Keyword(s):

Heavy Metals ◽

Oil Spills ◽

Environmental Concern ◽

Sediment Quality ◽

Industrial Wastes ◽

Anthropogenic Sources ◽

Water Runoff ◽

Quality Of Water ◽

Wide Range ◽

The Impact

AbstractThe aim of the study was to evaluate the impact of potential pollution sources, mainly from the upstream anthropogenic sources and port-related activities. The in-vestigated area covered a wide range of anthropogenic im-pacts (e.g., industrial wastes, storm water runoff, acciden-tal oil spills, intentional discharges and shipping activities). The quality of water and Sediments was assessed us-ing Standard methods, as physical-chemical parameters, chemistry and biology (microbiology, ecotoxicology) aim-ing to figure the level of pollution and the effect of port-related activities. Seawater quality results agreed generally with environmental Standards. Though, in some samples the concentrations of sulphates (mg/1) and heavy metals (μg/1), as B, As and Se exceeded the recommended lim-its, without posing a serious environmental concern. Most of the surface sediment samples contain critical levels of hydrocarbons (C>12), (mg/kg), polycyclic aromatic hydrocarbons (ng/g) and polychlorobiphenyls (ng/g). For some heavy metals (mg/kg), exchangeable concentrations were found to be very close or above the regulations. The signifi-cance of this study is incontestable taking into account the lack of previous relevant historical data of this area. In this sense, it was possible to indicate, in general, good environmental conditions, despite the industrial and concentrated local port-related activities in the investigated area.

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Distribution of heavy metals in seawater, sediment and biota of Jinhae Bay, Korea

Water Science & Technology ◽

10.2166/wst.1994.0525 ◽

1994 ◽

Vol 30 (10) ◽

pp. 173-177 ◽

Cited By ~ 2

Author(s):

Lee Chan-Won ◽

Kwon Young-Tack

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Coastal Waters ◽

Heavy Metal Contamination ◽

Heavy Metal Concentration ◽

Industrial Wastes ◽

Subsequent Increase ◽

Zinc Cadmium ◽

Jinhae Bay ◽

Copper Lead

Over the past two decades, the coastal waters of Jinhae Bay have been extensively used by coastal communities and industries for the disposal of domestic and various industrial wastes, therefore increasing the level of pollutants in coastal waters with a subsequent increase in sediments, especially of heavy metals. Specific objectives of this research are to investigate the distribution of heavy metal concentration in biota, to compare the concentrations with those in sediment and water and to relate the bioconcentration to the different heavy metals in biota obtained from several sites. Sixty one percent of heavy metals was found in particulate form during the high runoff season and 32% during the dry season. The behavior of the particulate metals after flowing in to the enclosed coastal sea is an important factor in heavy metal contamination. Copper, lead and chromium contamination of sediment was revealed at several sites. The bioconcentration factors (BCFs) of zinc, cadmium, copper, nickel, chromium and lead by the mussel (Mytilus edulis) were determined as 2,900, 2,814, 807, 423, 228 and 127 in the decreasing order, respectively. The areas located nearest to highly populated city and industries exhibited mussels with the largest accumulation of copper, lead and chromium.

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Emulsion Liquid Membrane Extraction of Silver from Photographic Waste using Tetramethylthiuram Disulfide (TMTDS) as a Mobile Carrier

Journal of Applied Membrane Science & Technology ◽

10.11113/amst.v3i1.35 ◽

2017 ◽

Vol 3 (1) ◽

Author(s):

Norasikin Othman ◽

Chan Kit Hie ◽

Chiong Tung ◽

Hanapi Mat ◽

Masahiro Goto

Keyword(s):

Heavy Metals ◽

Liquid Membrane ◽

Raw Materials ◽

Precious Metals ◽

Membrane Extraction ◽

Industrial Wastes ◽

Emulsion Liquid Membrane ◽

Tetramethylthiuram Disulfide ◽

Mobile Carrier ◽

Liquid Membrane Extraction

The recovery of precious metals such as silver from photographic wastes is required in order to save raw materials and to protect the environment from dispersed compound, especially heavy metals. For that matter, several technologies have been used such as precipitation, electrolytic, and ion exchange processes which offer some advantages as well as drawbacks over others. Recently, emulsion liquid membrane extraction has been recognized to be a potential process for industrial wastes treatment and recovery of heavy metals. This process has the ability to selectively separate and rapidly concentrate metals through its very thin layer liquid membrane which has a large interfacial area. An attempt was made to recover silver from liquid photographic wastes using tetramethylthiuram disulfide as a mobile carrier. The important variables affecting the emulsion liquid membrane (ELM) process including residence time, surfactant concentration, carrier concentration, level of agitation and phase ratio between emulsion and feed phase were investigated. The results showed that tetramethylthiuram disulfide is selective towards silver (>80%) compared to other metals in the photographic waste. The highest silver extraction is obtained using 0.05 M tetramethylthiuram disulfide, 3% (w/v) Span 80, 300 rpm stirring speed, 1.0 M thiourea in 0.1 M HCl stripping agent, 1:3 of treat ratio, and toluene as the diluent.

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Heavy Metals Concentration in Contaminated Soils from Southern Part of Romania

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca Agriculture ◽

10.15835/buasvmcn-agr:6544 ◽

2011 ◽

Vol 68 (2) ◽

Author(s):

Diana FLORESCU ◽

Andreea IORDACHE ◽

Claudia SANDRU ◽

Elena HORJ ◽

Roxana IONETE ◽

...

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Contaminated Soils ◽

Metal Contamination ◽

Industrial Waste ◽

Heavy Metal Contamination ◽

Land Application ◽

Industrial Wastes ◽

Treatment Processes ◽

Contamination Of Soils

As a result of accidental spills or leaks, industrial wastes may enter in soil and in streams. Some of the contaminants may not be completely removed by treatment processes; therefore, they could become a problem for these sources. The use of synthetic products (e.g. pesticides, paints, batteries, industrial waste, and land application of industrial or domestic sludge) can result in heavy metal contamination of soils.

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Can Aquatic Plants Remove Heavy Metals from Industrial Wastes and Sludges Effectively?

Nitrogen Fixation: From Molecules to Crop Productivity - Current Plant Science and Biotechnology in Agriculture ◽

10.1007/0-306-47615-0_326 ◽

2005 ◽

pp. 575-576

Author(s):

Elisha Tel-Or ◽

Gili Nahum ◽

Nava Shoel ◽

Rony Benaroya ◽

Noa Lavid ◽

...

Keyword(s):

Heavy Metals ◽

Aquatic Plants ◽

Industrial Wastes

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Fundamental Studies on Utilization of Micro Green Algae for Treatment of Industrial Wastes or Polluted Water. III. : Resistance of Live Chlorella in Polluted Water against Toxicity of Some Heavy Metals

Eisei kagaku ◽

10.1248/jhs1956.17.75 ◽

1971 ◽

Vol 17 (2) ◽

pp. 75-83

Author(s):

HIROO SUGIYAMA

Keyword(s):

Heavy Metals ◽

Green Algae ◽

Industrial Wastes ◽

Polluted Water

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Heavy metal assessment of polluted soil around Hatirjheel Lake of Dhaka city, Bangladesh

Bangladesh Journal of Scientific and Industrial Research ◽

10.3329/bjsir.v52i1.32084 ◽

2017 ◽

Vol 52 (1) ◽

pp. 61-66 ◽

Cited By ~ 2

Author(s):

MA Hashem ◽

MS Nur-A-Tomal ◽

MJ Abedin ◽

SA Bushra

Keyword(s):

Heavy Metals ◽

Potential Risk ◽

Polluted Soil ◽

Soil Samples ◽

Industrial Wastes ◽

Dhaka City ◽

Heavy Metals Accumulation ◽

Soil Arsenic ◽

Metals Accumulation ◽

Heavy Metal Assessment

Heavy metals contamination in soil is a big issue to the environment because of its potential risk to the ecosystem and human health. Industrialization increases the disposal of industrial wastes containing heavy metals. Most industries are located near the bank of rivers or Lakes where industries can dump their effluents without proper treatment. In this study, an investigation was carried out to evaluate the heavy metals of the contaminated soil near HatirjheelLake of Dhaka city, Bangladesh. The collected soil samples were air-dried, acid digested and aliquots were analyzed by the atomic absorption spectroscopy for the quantification of heavy metals. The ranges of heavy metals were found in soil: arsenic 2.733.3 mg/kg, lead 9.574.9 mg/kg, chromium 21.843.1 mg/kg, manganese 138.3222.7 mg/kg and iron 159032.9246382.8 mg/kg, respectively. Cadmium was below the detection limit. The dominance of heavy metals series in the soil follows: Fe >Mn> Cr >Pb> As > Cd. Heavy metals content in the soil by comparison with the USEPA guidelines show that Pb was non-polluted; Cr and Mn were moderately polluted; As and Fe were heavily polluted in the study area. Heavy metals accumulation in the soil could pose a potential risk to the ecosystem as well as to human health.Bangladesh J. Sci. Ind. Res. 52(1), 61-66, 2017

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