scholarly journals Mono and Poly-Cationic Adsorption of Heavy Metals Using Natural Glauconite

Minerals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 470 ◽  
Author(s):  
Franus ◽  
Bandura ◽  
Madej
Keyword(s):  
Heavy Metals ◽  
Flow Rate ◽  
Inductively Coupled Plasma ◽  
Environmental Concern ◽  
Nitrogen Adsorption ◽  
Exchange Capacity ◽  
Point Of Zero Charge ◽  
Batch System ◽  
Metals Removal ◽  
The Impact

The issue of heavy metal pollution of industrial wastewaters is a major environmental concern nowadays. The aim of this study was to investigate the effectiveness of heavy metals removal from aqueous solutions by natural glauconite, in batch and dynamic systems. Glauconite was characterized by X-ray diffraction, nitrogen adsorption–desorption isotherm, scanning electron microscope, differential thermal analysis, and inductively coupled plasma spectroscopy. Cation exchange capacity, bulk density and point of zero charge were also determined. In the batch system, the impact of initial concentration, contact time, and pH of metal solutions on sorption efficiency was analysed, whereas for the dynamic system, the influence of flow rate was studied. The adsorption capacity in the batch system followed the order: Pb > Cd > Zn > Cu. The highest adsorption rate was achieved in the pH range 7–9. In the column experiments, the selectivity order in the case of mono-cationic system was the same as that of batch system, whereas in the case of poly-cationic system it was: Pb > Zn > Cd > Cu. With the increase of the flow rate, the total capacity at the exhaustion point increased.

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

2016 ◽  
Vol 8 (1) ◽  
pp. 174-194 ◽  
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.

scholarly journals A New Ex Vivo Model to Evaluate the Hair Protective Effect of a Biomimetic Exopolysaccharide against Water Pollution

Cosmetics ◽  
2020 ◽  
Vol 7 (4) ◽  
pp. 78
Author(s):  
Claire Tubia ◽  
Alfonso Fernández-Botello ◽  
Jan Dupont ◽  
Eni Gómez ◽  
Jérôme Desroches ◽  
...  
Keyword(s):  
Water Pollution ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Adverse Effects ◽  
Inductively Coupled Plasma ◽  
Ex Vivo ◽  
Polluted Water ◽  
Ex Vivo Model ◽  
Fiber Damage ◽  
The Impact

As an external appendage, hair is exposed to multiple stresses of different origins such as particles and gases in air, or heavy metals and chemicals in water. So far, little research has addressed the impact of water pollution on hair. The present study describes a new ex vivo model that allowed us to document the adverse effects of water pollutants on the structure of hair proteins, as well as the protective potential of active cosmetic ingredients derived from a biomimetic exopolysaccharide (EPS). The impact of water pollution was evaluated on hair from a Caucasian donor repeatedly immersed in heavy metal-containing water. Heavy metal retention in and on hair was then quantified using Inductively Coupled Plasma Spectrometry (ICP/MS). The adverse effects of heavy metals on the internal structure of hair and its prevention by the EPS were assessed through measurement of keratin birefringence. Notably, the method allows the monitoring of the organization of keratin fibers and therefore the initial change on it in order to modulate the global damage in the hair. Results revealed an increasing amount of lead, cadmium and copper, following multiple exposures to polluted water. In parallel, the structure of keratin was also altered with exposures. However, heavy metal-induced keratin fiber damage could be prevented in the presence of the tested EPS, avoiding more drastic hair problems, such as lack of shine, or decrease in strength, due to damage accumulation.

Heavy Metals Removal from Wastewater by Using Activated Peat

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2309-2312 ◽  
Author(s):  
J. S. D'Avila ◽  
C. M. Matos ◽  
M. R. Cavalcanti
Keyword(s):  
Heavy Metals ◽  
Cation Exchange ◽  
Metal Ion ◽  
Fixed Bed ◽  
Exchange Capacity ◽  
Ion Concentration ◽  
Fixed Bed Reactor ◽  
Stirred Tank Reactors ◽  
Metals Removal ◽  
Low Efficiency

The processes used to remove heavy metals from inorganic wastewater have in general low efficiency. The use of activated peat obtained by using a process similar to a cation exchange reaction increases the removal efficiency up to five times when compared with peat “in natura”. The main objective of this work is to show the fundamental mathematical model, governed by diffusion process and the algorithms utilized to design the batch and the continuous feed stirred tank reactors or in some cases a fixed bed reactor. The principal dimensions of these equipments are obtained from the knowledge of the activated peat's cation exchange capacity used in the process, and the main chemical characteristics of the heavy metal ion contained in the wastewater. Besides, two important parameters are also included: the ion concentration and the efficiency of the process obtained from laboratory kinetics experiments. For example Pb+2 is removed l:rom a wastewater at a concentration of 50g/m3 in five minutes or less, with an efficiency of 98%.

Treatment of metals-contaminated wastewaters by use of natural zeolites

1999 ◽  
Vol 39 (10-11) ◽  
pp. 115-122 ◽  
Author(s):  
S. K. Ouki ◽  
M. Kavannagh
Keyword(s):  
Heavy Metals ◽  
Metal Removal ◽  
Low Cost ◽  
Exchange Capacity ◽  
Natural Zeolites ◽  
Al Substitution ◽  
Metals Removal ◽  
Exchange Material ◽  
Na Ions ◽  
Competing Ions

This paper assesses the potential of natural zeolite utilization as a low-cost in exchange material for heavy metals removal. Two natural zeolites, clinoptilolite and chabazite, have been evaluated with respect to their selectivity and removal performance for the treatment of effluents contaminated with mixed heavy metals (Pb, Cd, Cu, Zn, Cr, Ni and Co). The effects of relevant parameters such as chemical treatment, metals concentration, pH, and presence of competing ions were examined. The results showed that the received zeolites contained exchangeable K, Ca and Na ions, but exposing them to concentrated NaCl solutions converted them to a homoionic state in the Na form which improved their exchange capacity. Clinoptilolite and chabazite exhibited different selectivity profiles for all metals studied except for Pb for which both zeolites performed exceptionally well. The results also showed that chabazite exchange capacity is superior to that of clinoptilolite mainly due to the higher Al substitution of Si which provides chabazite with a negative framework favourable to higher exchange capability. The pH was found to have an effect on metal removal as it can influence both the character of the exchanging ions and the zeolite itself. Overall, the removal mechanism was controlled by ion exchange and precipitation was proven negligible.

scholarly journals BIOPHILE ELEMENTS AND HEAVY METALS IN ARTEMISIA FRIGIDA WILLD. AND ARTEMISIA JACUTICA DROB.

2019 ◽  
pp. 199-205
Author(s):  
Elena Petrovna Dylenova ◽  
Svetlana Vasil'yevna Zhigzhitzhapova ◽  
Tuyana Erdemovna Randalova ◽  
Larisa Dorzhiyevna Radnaeva ◽  
Valentina Germanovna Shiretorova ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Forest Fires ◽  
Inductively Coupled Plasma ◽  
Aerial Part ◽  
Raw Materials ◽  
High Concentration ◽  
Artemisia Frigida ◽  
Wide Range ◽  
Copper Zinc ◽  
The Impact

Biophile microelements (copper, zinc, manganese, iron, nickel) and heavy metals (lead, cadmium) in the aerial part of Artemisia frigida Willd. and Artemisia jacutica Drob. of Russian (areas of the Republic of Buryatia) and Mongolian flora was presented in this paper. The quantitative content of the elements in the samples collected in 2008, 2015–2018 was studied using atomic absorption method performed on a SOLAAR M6 after preliminary decomposition by dry mineralization, and inductively coupled plasma atomic emission method (ICP) on a Profile Plus spectrometer after decomposition of samples in the MARS 6 microwave system. The content of the same elements in the aerial part of the same species of Artemisia varied in a wide range, which was consistent with the literature data. In addition, the Principle component analysis of the elemental composition of A. frigida and A. jacutica was presented in this paper. The biplot showed the impact of forest fires that took place on the territory of Buryatia in 2015. So this year was characterized by a high concentration of lead, cadmium, nickel, copper and iron in studied samples. Also, the biplot showed the elements content versus plant species. In general, the content of toxic (lead, cadmium, nickel) and vital elements (copper, zinc, iron, manganese) was within the normal concentration. Therefore, the aerial part of A. frigida and A. jacutica of Buryatian (Russia) and aimaks (Mongolia) flora can be considered as promising plant raw materials for using in medical practice.

scholarly journals Use of Porous no Metallic Minerals to Remove Heavy Metals, Precious Metals and Rare Earths, by Cationic Exchange

2021 ◽  
Author(s):  
Juan Hernandez-Avila ◽  
Edgar Omar Serrano-Mejía ◽  
Eleazar Salinas-Rodríguez ◽  
Eduardo Cerecedo-Sáenz ◽  
María Isabel Reyes-Valderrama ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Rare Earths ◽  
Precious Metals ◽  
Exchange Capacity ◽  
Metals Removal ◽  
Preliminary Study ◽  
Cationic Exchange ◽  
Materials Used

This chapter is related with the preliminary study of some non-metallic minerals to evaluate their cationic exchange capacity, to remove heavy and precious metals, as well as rare earths elements. The minerals and materials used to execute the ion metals removal were bentonite, phosphorite, and diatomite. The chapter shows the physicochemical behavior of all these minerals, which were used to remove the mentioned elements from solutions coming from ore leaching. It was found that in all cases, the removal of heavy and precious metals, as well as rare earths elements reached over 90%. Although, there were minimal differences in efficiency for all minerals used (bentonite, phosphorite, and diatomite), it could be pointed that the phosphorite has the best results going from 99.43% of removal of Gd, to 99.95–100% for the case of Ce, Nd, La, Yb, Eu, Er, Sm, Tb, Ge, Pd, Pt, and Au.

scholarly journals Evaluation of trace elements and particulate matter deposition on plant foliage exposed to vehicular pollution

2019 ◽  
Vol 78 (2) ◽  
pp. 164-168
Author(s):  
Aasawari A. Tak ◽  
Umesh B. Kakde
Keyword(s):  
Heavy Metals ◽  
Particulate Matter ◽  
Inductively Coupled Plasma ◽  
Mangifera Indica ◽  
Heavy Metal Accumulation ◽  
Vehicular Pollution ◽  
Ficus Benghalensis ◽  
Bauhinia Variegata ◽  
The Impact ◽  
Roadside Plants

Abstract In recent times, highly developed metropolitan cities have progressively used biodiverse roadside plants as an eco-sustainable tool for the mitigation of air pollution. The present study has been designed to scrutinize the impact of particulate matter (PM) deposition and heavy metal accumulation in roadside plants. Some of the common roadside plants found along the national highway at Thane (Mumbai) region that were selected for this study are Alstonia schlolaris, Bauhinia variegata, Ficus benghalensis, Ficus religiosa, Cassia fistula, and Mangifera indica. The inductively coupled plasma atomic emission spectroscopy (ICP-AES) analysis was carried out for five heavy metals, namely Cr, Cu, Fe, Mn and Zn. The particulate matter deposition was observed to be the highest in Ficus benghalensis (1.14 mg kg−1), while it was found to be the lowest in Bauhinia variegata (0.71 mg kg−1). The present study revealed that the accumulation of heavy metals in plants inversely varies with the deposition of dust on the surface of leaves. The tolerant species of plants can serve as natural biofilters that can alleviate environmental pollution to certain extent.

scholarly journals The Concentration of Selected Heavy Metals in Muscles, Liver and Kidneys of Pigs Fed Standard Diets and Diets Containing 60% of New Rye Varieties

Animals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1377
Author(s):  
Agnieszka Chałabis-Mazurek ◽  
Jose Luis Valverde Piedra ◽  
Siemowit Muszyński ◽  
Ewa Tomaszewska ◽  
Sylwia Szymańczyk ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Prolonged Exposure ◽  
Environmental Concern ◽  
Health And Safety ◽  
Heavy Metal Concentration ◽  
Animal Origin ◽  
Standard Diet ◽  
Alternative Source ◽  
Tissue Samples ◽  
The Impact

The carry-over of heavy metals from feed to muscles is generally low if animals are fed with a standard diet containing amounts below the maximum permissible levels. However, prolonged exposure to heavy metals can lead to their accumulation in some organs like muscles, liver, and kidneys. This paves the way for human health risks related to the consumption of products of animal-origin. Thus, using feed mixtures with a low level of heavy metals in pig production will contribute to increasing public health and safety and is of environmental concern. The study aimed to assess the impact of the level of some heavy metals (Cd, Pb, Hg, Cu, Zn, Fe and Mn) in standard (control) feed mixtures and in alternative feed mixtures based on maize or new rye varieties (population and hybrid) on the heavy metal concentration in muscles, liver and kidney of fattened pigs at slaughter. While some differences between heavy metals content in examined tissue samples from experimental groups were observed, all of them were in the range of allowable levels according to European Community rules. In conclusion, new rye varieties, especially the hybrid variety, could be an alternative source of cereal grains for pig nutrition.

scholarly journals Karakteristik limbah dan dampak kesehatan bagi pembatik Lendah, Kulon Progo

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Suhartini - Suhartini ◽  
Sri Awalia Febriani ◽  
IBG. Surya Putra Pidada ◽  
Hendro Widagdo ◽  
Martiana Suciningtyas ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Total Cholesterol ◽  
Blood Sugar ◽  
Inductively Coupled Plasma ◽  
Score Test ◽  
Cognitive Disorders ◽  
Blood Levels ◽  
Cholesterol Levels ◽  
Significant Difference ◽  
The Impact

Synthetic batik coloring often uses heavy metals element such as lead (Pb), chromium (Cr), silica (Si), and hydrochloric acid (HCl). The exposure of heavy metals in long period results in health impair on the artisans and eventually harming the environment. The purpose of this research is to analyze the waste characteristics and health impact towards the artisans in the Lendah, Kulon Progo. Seventy-six batik artisan, consisting of 37 from SB, 20 from FA, and 19 from SA, underwent 5 ml blood sampling. The samples were used to determine their hemoglobin (Hb) level, packed cell volume (PCV), blood sugar, total cholesterol. Blood plasma and wastewater were examined for Pb and Cr by the inductively coupled plasma (ICP) method; Si with atomic absorption spectrophotometry (AAS); and Cl- with spectrophotometry. Respondents conducted health checks and interviews about knowledge of the impact of waste and disease complaints experienced using a questionnaire. Cognitive disorders were examined based on a mini-mental state examination (MMSE) score test and a diabetic neuropathy symptom (DNS) scoring system. The results obtained were analyzed by analysis of variance and t-test, the relationship of Pb and Cr with cognitive disorders performed a correlation test, total cholesterol levels and blood sugar were analyzed descriptively. There is no difference in knowledge about waste in batik makers in SB, FA, and SA. The level of Pb, Cr, and Cl- within the three production centers show no significant difference (p>0,05), whilst Si level shows significant difference (p<0,05). There is no correlation between Pb and Cr blood levels with cognitive impairing according to MMSE and DNS (p> 0.05). Normal cholesterol levels (<200mg/dL) in batik artisan, between 70.0-80.5%, while normal blood glucose levels (<200 mg/dL), obtained between 85.0-95.1%. Si levels in all three production centers’ waste shows significant difference. The most frequent complaint was back pain and dizziness. There is no correlation caused by Pb and Cr levels toward cognitive impairing.  Cholesterol concentrations tend to be high.

scholarly journals Kandungan Logam (Pb) pada Strombus canarium Linnaeus,1758 (Mollusca :Gastropoda) di Perairan Malang Rapat dan Tanjung Siambang Provinsi Kepulauan Riau

2020 ◽  
Vol 23 (3) ◽  
pp. 299-304
Author(s):  
Andi Bakia Askara ◽  
Fadhliyah Idris ◽  
Risandi Dwirama Putra ◽  
Aditya Hikmat Nugraha
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Inductively Coupled Plasma ◽  
The Body ◽  
Marine Biota ◽  
Purposive Sampling ◽  
Inductively Coupled ◽  
The Impact

Human activities in coastal areas have the potential to cause heavy metal pollution. The impact of heavy metal pollution causes the accumulation of heavy metals in the body of marine biota, including the Gonggong Snail (S. Canarium). This study aims to analyze the concentration of heavy metals Pb in Gonggong snails in two different characteristics of aquatic ecosystems. Purposive sampling used as a sampling method of Gonggong Snail. The Analysis of heavy metal concentrations from Pb using the ICP (Inductively coupled plasma). The results showed the heavy metal concentration of Pb was 0.427 mg/kg for Malang Rapat Village and 0.71 mg/kg for Tanjung Siambang village. The difference between the two locations possibly due to differences in the aquatic characteristics at the study site. Aktivitas manusia di kawasan pesisir berpotensi menyebabkan terjadinya pencemaran logam berat. Dampak dari pencemaran logam berat dapat menyebabkan terakumulasinya logam berat pada tubuh biota laut, salah satunya yaitu Siput Gonggong (S.Canarium). Penelitian ini bertujuan untuk menganalisis konsentrasi logam berat Pb pada Siput Gonggong yang terdapat pada dua ekosistem perairan yang memiliki karakteristik perairan berbeda. Pengambilan sampel siput gonggong dilakukan dengan cara purposive sampling. Analisis konsentrasi logam berat menggunakan bantuan alat ICP (Inductively coupled plasma). Hasil penelitian menunjukkan bahwa konsentrasi logam berat Pb sebesar 0,427 mg/kg untuk Desa Malang Rapat dan 0,71 mg/kg untuk desa Tanjung Siambang. Terjadi perbedaan antara kedua lokasi kemungkinan dikarnakan adanya perbedaan karakteristik perairan pada lokasi penelitian.

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