scholarly journals Bioremediation Trends on Mitigation of As(III), Cr(VI) and Organic Dyes From Aqueous Medium using Plant and Microbial Biomass: An Overview

2021 ◽  
Vol 12 (6) ◽  
pp. 621-637
Author(s):  
Ujjwal Kumar ◽  
◽  
Ashok K. Jha ◽  
Raghbendra Thakur ◽  
◽  
...  
Keyword(s):  
Heavy Metals ◽  
Aqueous Medium ◽  
Organic Dyes ◽  
Wide Spectrum ◽  
Low Cost ◽  
Health Hazard ◽  
Bacterial Biomass ◽  
Toxic Heavy Metals ◽  
Medicinal And Aromatic Plants ◽  
Carcinogenic Agents

Arsenic, chromium and organic dyes are the prominent carcinogenic agents, posing a serious health hazard. In current scenario, groundwater as well as surface water mostly contaminated by chemical complexes of As (III), Cr (VI) and organic dyes, these are leading hazardous threat to eco-system. Several mitigation techniques of As (III), Cr (VI) and organic dyes are available but efforts are going on to devise a novel method of removal of these toxicants. This review takes into account all the recent advances in the detoxification of contaminated water exploring removal mechanism by biosorption and bioaccumulation. The possibility of the removal of toxic heavy metals from an aqueous medium by plant and bacterial biomass has been discussed. Now a days, bioaccumulation and biosorption from plants and microbial sources has emerged as simple, effective and eco-friendly techniques for decontamination of these chemical compounds from water resources at very low cost. Many agricultural products and solid wastes have also been found suitable decontaminant of toxic heavy metals and dyes. A wide spectrum of medicinal and aromatic plants as well as aquatic plants available in abundance may also be utilized as potential remover of As (III), Cr (VI) and organic dyes. This article explained mechanism and application on detail aspects of bioremediation technology including conventional techniques with recent development. This review shows the trends and development of mitigation stretagies by bioremediation with latest updates.

Parameters Affecting Dye Adsorption - Using Graphene Coated Sand (GSC)

2018 ◽  
Vol 4 (02) ◽  
Author(s):  
Seroor Atalah Khaleefa Alia ◽  
Dr. Mohammed Ibrahimb ◽  
Hussein Ali Hussein
Keyword(s):  
Heavy Metals ◽  
Contact Time ◽  
Organic Dyes ◽  
Low Cost ◽  
Dye Adsorption ◽  
Contaminated Water ◽  
Maximum Adsorption Capacity ◽  
Engineering Designs ◽  
Heavy Metals Ions ◽  
Coated Sand

Adsorption is most commonly applied process for the removal of pollutants such as dyes and heavy metals ions from wastewater. The present work talks about preparing graphenic material attached sand grains called graphene sand composite (GSC) by using ordinary sugar as a carbon source. Physical morphology and chemical composition of GSC was examined by using (FTIR, SEM, EDAX and XRD). Efficiency of GSC in the adsorption of organic dyes from water was investigated using reactive green dye with different parameters such as (ph, temperature, contact time and dose). Adsorption isotherm was also studied and the results showed that the maximum adsorption capacity of dye is 28.98 mg/g. This fast, low-cost process can be used to manufacture commercial filters to treat contaminated water using appropriate engineering designs.

scholarly journals Dietary nutrients and health risks from exposure to some heavy metals through the consumption of the farmed common carp (CYPRINUS CARPIO)

2021 ◽  
Author(s):  
Halyna Tkachenko ◽  
Natalia Kurhaluk ◽  
Olha Kasiyan ◽  
Piotr Kamiński
Keyword(s):  
Heavy Metals ◽  
Common Carp ◽  
Muscle Tissue ◽  
Cyprinus Carpio ◽  
Health Hazard ◽  
Daily Intake ◽  
Carcinogenic Risk ◽  
Toxic Heavy Metals ◽  
Dietary Nutrients ◽  
Target Hazard Quotients

AbstractCommon carp (Cyprinus carpio) is one of the most important cultured fish species in Poland. The aims of our study were to determine the concentration of essential minerals in the muscle tissue of carp obtained from a pond culture and to compare the content of these minerals with the physiological norms of nutrition for the Polish population, Recommended Dietary Allowances (RDA), and Estimated Average Requirements (EAR). The non-carcinogenic and carcinogenic risk by assessment of the Estimated target hazard quotients (THQ), total target hazard quotients (ΣTHQ), and carcinogenic risk were also studied. The muscle tissue of the carp was rich in macroelements. The pattern significance gradation of element concentrations was as follows: Na > K > Ca > P > Mg > Al > Zn > Fe > Cu > Mn > Cr > Se > Co. The concentration of toxic heavy metals in the samples was lower than the maximum allowable level of metals in food products. The risk of consumption of toxicants by an adult at a daily intake of 100 g of fish was 1.45% for Pb, 0.1% for Hg, 0.02% for Cd, and 0.02% for As, compared to the allowable daily intake for each toxicant. The value of the target hazard quotients of each metal was less than 1, indicating that the intake of a single metal through the consumption of carp meat does not pose a considerable health hazard. The total value of the target hazard quotients was also less than 1, indicating the safety of the combined effects of the chemicals. The major risk contributor was Pb with 82.9%, followed by Hg (9.38%), As (6.43%), and Cd (1.29%).

scholarly journals Applicability of Moringa oleifera Lam. pie as an adsorbent for removal of heavy metals from waters

2013 ◽  
Vol 17 (1) ◽  
pp. 94-99 ◽  
Author(s):  
Affonso C. Gonçalves Junior ◽  
Ana P. Meneghel ◽  
Fernanda Rubio ◽  
Leonardo Strey ◽  
Douglas C. Dragunski ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Moringa Oleifera ◽  
Low Cost ◽  
Previous Treatment ◽  
Toxic Heavy Metals ◽  
Removal Of Heavy Metals ◽  
Alternative Material ◽  
Cadmium Lead ◽  
Optimized Conditions ◽  
Moringa Oleifera Lam

This study evaluated the efficacy of moringa seeds (Moringa oleifera Lam.) as an adsorbent material for removing toxic heavy metals such as cadmium, lead, and chromium from contaminated solutions. The effect of the adsorbent mass was investigated at two pH conditions (5.0 and 7.0). The optimized conditions were 0.300 g of adsorbent at pH 5.0, used for the isotherms construction, and linearized according to Langmuir and Freundlich models. Results showed that cadmium adsorption was similar in both the models used. For lead, the Freundlich model had the best adjustment and chromium was better adjusted by the Langmuir model. It was concluded that the adsorbent was effective in the remediation of solutions containing cadmium, lead and chromium, thus, its use as sustainable alternative material is feasible, since it has low cost, does not need a previous treatment and it is a byproduct.

scholarly journals Bioremoval of Different Heavy Metals in Industrial Effluent by the Resistant Fungal Strain Aspergillus niger

2021 ◽  
Vol 20 (4) ◽  
Author(s):  
K. J. Naveen Kumar ◽  
J. Prakash
Keyword(s):  
Heavy Metals ◽  
Aspergillus Niger ◽  
Metal Binding ◽  
Metal Removal ◽  
Low Cost ◽  
Heavy Metal Removal ◽  
Industrial Effluent ◽  
Toxic Metal ◽  
Differential Pulse ◽  
Toxic Heavy Metals

Developing countries are increasingly concerned with pollution due to toxic heavy metals in the environment. Unlike most organic pollutants which can be destroyed, toxic metal ions released into the environment often persist indefinitely circulating and eventually accumulating throughout the food chain thus posing a serious threat to mankind. The use of biological materials for heavy metal removal or recovery has gained importance in recent years due to their good performance and low cost. Among the various sources, both live and inactivated biomass of organisms exhibits interesting metal binding capacities. Their complex cell walls contain high content of functional groups like amino, amide, hydroxyl, carboxyl, and phosphate which have been implicated in metals binding. In the present study, Aspergillus niger was used to analyze the metal uptake from an aqueous solution. The determination of Cu+2, Pb+2, Cd+2, Zn+2, Co-2 and Ni+2 in samples was carried out by differential Pulse Anodic Voltammetry (DPASV) and the Voltammograms. Production of oxalic acid was carried out by submerged fermentation. The organism used in the present study has the ideal properties to sequester toxic metals and grow faster.

The influence of heavy metals on the production of extracellular polymer substances in the processes of heavy metal ions elimination

2005 ◽  
Vol 52 (10-11) ◽  
pp. 151-156 ◽  
Author(s):  
J. Mikes ◽  
M. Siglova ◽  
A. Cejkova ◽  
J. Masak ◽  
V. Jirku
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Cell Wall ◽  
Metal Ions ◽  
Cell Walls ◽  
Heavy Metal Ions ◽  
Extracellular Polymeric Substances ◽  
Low Cost ◽  
Toxic Heavy Metals ◽  
Metal Interactions

Wastewaters from a chemical industry polluted by heavy metal ions represent a hazard for all living organisms. It can mean danger for ecosystems and human health. New methods are sought alternative to traditional chemical and physical processes. Active elimination process of heavy metals ions provided by living cells, their components and extracellular products represents a potential way of separating toxic heavy metals from industrial wastewaters. While the abilities of bacteria to remove metal ions in solution are extensively used, fungi have been recognized as a promising kind of low-cost adsorbents for removal of heavy-metal ions from aqueous waste sources. Yeasts and fungi differ from each other in their constitution and in their abilities to produce variety of extracellular polymeric substances (EPS) with different mechanisms of metal interactions. The accumulation of Cd(2+), Cr(6+), Pb(2+), Ni(2+) and Zn(2+) by yeasts and their EPS was screened at twelve different yeast species in microcultivation system Bioscreen C and in the shaking Erlenmayer's flasks. This results were compared with the production of yeast EPS and the composition of yeast cell walls. The EPS production was measured during the yeast growth and cell wall composition was studied during the cultivations in the shaking flasks. At the end of the process extracellular polymers and their chemical composition were isolated and amount of bound heavy metals was characterized. The variable composition and the amount of the EPS were found at various yeast strains. It was influenced by various compositions of growth medium and also by various concentrations of heavy metals. It is evident, that the amount of bound heavy metals was different. The work reviews the possibilities of usage of various yeast EPS and components of cell walls in the elimination processes of heavy metal ions. Further the structure and properties of yeasts cell wall and EPS were discussed. The finding of mechanisms mentioned above is necessary to identify the functional groups entered in the metals elimination processes.

Australian Biosolids: Characterization and Determination of Available Copper

2004 ◽  
Vol 1 (2) ◽  
pp. 116 ◽  
Author(s):  
Ian W. Oliver ◽  
Graham Merrington ◽  
Mike J. McLaughlin
Keyword(s):  
Heavy Metals ◽  
Agricultural Land ◽  
Low Cost ◽  
Land Application ◽  
Toxic Heavy Metals ◽  
High Concentration ◽  
Protection Factor ◽  
Metal Concentrations ◽  
Total Metal ◽  
High Concentrations

Environmental Context. Land application of sewage-derived biosolids is both an inexpensive method to dispose of waste and a simple way to increase soil fertility and stability. However, biosolids often contain high concentrations of heavy metals, but not all of the metals are immediately available for uptake by the soil or other organisms. To determine if this toxicologic risk outweighs the benefits, the degree of ecologically available metal, rather than simply the entire metal content, must be known in both the as-disposed and worst conditions scenarios. Application of these principles requires regulatory bodies to amend their guidelines. Abstract. Application of biosolids to agricultural land provides a low-cost disposal option with many potential benefits to soil. However, the practice may result in accumulations of potentially toxic heavy metals, and thus regulations are in place to limit the amount of metals applied to soil in this way. Current Australian regulations are not ideal because they are based on total metal concentrations in soils and biosolids, rather than the fraction that is ecologically available (the fraction accessible by organisms). Therefore more environmentally appropriate regulations, based on the available metal portion, need to be devised. However, before this is possible, more needs to be known about the characteristics of Australian biosolids, including the factors that influence the availability of biosolid metals. Copper is a metal of great concern because of its commonly high concentration in biosolids and because of its relatively high toxicity to certain groups of bacteria and fungi. Therefore an investigation was conducted to characterize the range of properties observed in Australian biosolids, and to determine the fraction of available metals and the factors that influence it (particularly in the case of copper). General properties such as pH, electrical conductivity, organic carbon, and total metal concentrations were measured. Availability of copper was specifically measured using isotopic exchange techniques and a Cu2+ ion-selective electrode. Results showed that total copper concentration and Cu2+ activity could be used to predict available copper. A new system of biosolid land-use regulation that incorporates the available metal fraction and a pH protection factor is proposed.

Lignin and Lignin Based Materials for the Removal of Heavy Metals from Waste Water-An Overview

2019 ◽  
Vol 233 (3) ◽  
pp. 315-345 ◽  
Author(s):  
Ayesha Naseer ◽  
Anum Jamshaid ◽  
Almas Hamid ◽  
Nawshad Muhammad ◽  
Moinuddin Ghauri ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Environmental And Health Effects ◽  
Low Cost ◽  
Black Liquor ◽  
Steel Production ◽  
Toxic Heavy Metals ◽  
Natural Adsorbents ◽  
Wood Residues ◽  
Removal Of Heavy Metals ◽  
By Products

Abstract Water Pollution through heavy metals is the concerned issue as many industries like tanning, steel production and electroplating are the major contributors. Various toxic Heavy metals are a matter of concern as they have severe environmental and health effects. Most commonly, conventional methods are using to remove these heavy metals like precipitation, ion exchange, which are not economical and have disposal issues. Adsorption of heavy metals by different low-cost adsorbents seems to be the best option in wastewater treatment. Many agricultural by-products proved to be suitable as low-cost adsorbents for removing heavy metals efficiently in a minimum time. Lignin residues that involves both agricultural and wood residues and sometimes separated out from black liquor through precipitation have adsorption capacity and affinity comparable to other natural adsorbents. However, lignin as bio adsorbents have the advantage of less cost and gives efficient adsorption results. This study is a review of the recent literature on the use of natural lignin residues for heavy metals adsorption under different experimental scenarios.

scholarly journals Adsorption Studies of Chromium by Using Low Cost Adsorbents

Our Nature ◽  
2013 ◽  
Vol 11 (1) ◽  
pp. 11-16 ◽  
Author(s):  
N. Gandhi ◽  
D. Sirisha ◽  
K.B. Chandra Sekhar
Keyword(s):  
Heavy Metals ◽  
Aqueous Solution ◽  
Contact Time ◽  
Low Cost ◽  
Water Bodies ◽  
Batch Adsorption ◽  
Toxic Heavy Metals ◽  
Adsorption Studies ◽  
Chromium Vi ◽  
Aqueous Streams

The presence of toxic heavy metals such as chromium (VI) contaminants in aqueous streams, arising from the discharge of untreated metal containing effluents into water bodies, is one of the most important environmental problems. Adsorption is one of the effective techniques for chromium (VI) removal from wastewater. In the present study, adsorbent was prepared from low cost adsorbents and studies were carried out for chromium (VI) removal. Batch adsorption studies demonstrated that the adsorbents had significant capacity to adsorb the chromium from aqueous solution. It was found that the adsorption increased with increase in contact time and adsorbent dosage. An attempt was made to study mixed algae as an adsorbent for removal of chromium (VI).DOI: http://dx.doi.org/10.3126/on.v11i1.8238 Our Nature Vol.11(1) 2013: 11-16?

scholarly journals Phytoremediation of Heavy Metals from Wastewater Using Bean Plants

2014 ◽  
Vol 11 (3) ◽  
pp. 1373-1380
Author(s):  
Abeer Al Saharty
Keyword(s):  
Heavy Metals ◽  
Contact Time ◽  
Adsorption Process ◽  
Low Cost ◽  
Time Effect ◽  
Batch Adsorption ◽  
Toxic Heavy Metals ◽  
Adsorption Capacities ◽  
Bean Plants ◽  
Very High

The Bean Plants were used in this work as low cost adsorbent material for removal of Pb(II), Cd(II) and Zn(II) ions from aqueous solutions. The samples were prepared and sorted according to the particles diameter by standard sieves 250 - 500 µm. Batch adsorption experiments were carried out to study the adsorption process pH of adsorbent, effect of contact time, effect of adsorbent amount and effect of metal concentration were Investigated in these experiments. The effect of any one of those previously mentioned parameters on the adsorption capacity were studied while the other parameters were kept constant. The maximum adsorption capacities of beans for the removal of selected heavy metals were very high. It is suggested to use it as a low coast adsorbent material to clean up the water in the environment from toxic heavy metals.

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