scholarly journals Heavy Metal Absorption Efficiency of two Species of Mosses (Physcomitrella patens and Funaria hygrometrica) Studied in Mercury Treated Culture under Laboratory Condition

2017 ◽  
Vol 225 ◽  
pp. 012225 ◽  
Author(s):  
Abanti Pradhan ◽  
Sony Kumari ◽  
Saktisradha Dash ◽  
Durga Prasad Biswal ◽  
Aditya Kishore Dash ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Laboratory Condition ◽  
Physcomitrella Patens ◽  
Absorption Efficiency ◽  
Funaria Hygrometrica ◽  
Metal Absorption ◽  
Treated Culture

PEMANFAATAN TONGKOL JAGUNG SEBAGAI ADSORBEN LIMBAH LOGAM BERAT

2021 ◽  
Vol 6 (2) ◽  
pp. 89
Author(s):  
Nur Rokhati ◽  
Aji Prasetyaningrum ◽  
Nur ‘Aini Hamada ◽  
Adi Lamda Cahyo Utomo ◽  
Hery Budiarto Kurniawan ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ion ◽  
Adsorption Process ◽  
Heavy Metal Concentration ◽  
Absorption Efficiency ◽  
Cellulose Content ◽  
Corn Cob ◽  
Adsorption Time ◽  
Metal Absorption ◽  
High Cellulose

Logam berat adalah istilah untuk logam-logam seperti Cd, Cr, Cu, Hg, Ni, Pb, dan Zn yang sering berhubungan dengan polusi dan toksisitas. Adsorpsi merupakan metode yang paling sering digunakan untuk menghilangkan ion logam. Tongkol jagung berpotensi menjadi adsorben karena kadar selulosanya yang tinggi. Penelitian ini bertujuan untuk mengkaji performa tongkol jagung sebagai adsorben ion Cr(VI) dan Cd(II). Penelitian dimulai dengan perlakuan awal adsorben dan dilanjutkan dengan proses adsorbsi. Kadar logam berat dihitung dengan metode spektrofotometri. Nilai efisiensi penyerapan Cd(II) meningkat dengan adanya perlakuan awal menggunakan suhu tinggi. Jumlah logam yang terserap semakin banyak seiring dengan lamanya waktu adsorpsi dengan efisiensi penyerapan sebesar 94,76% untuk Cr(VI) dan 83,96% untuk Cd(II). Penambahan jumlah adsorben tongkol jagung juga meningkatkan efisiensi penyerapan logam kromium hingga 82,33% dan kadmium sebesar 83,98%. Sedangkan jumlah ion Cr(VI) yang terserap tidak linear dengan penambahan kecepatan pengadukan. Berdasarkan hasil penelitian, dapat disimpulkan bahwa tongkol jagung berpotensi digunakan sebagai adsorben ion logam berat dengan efisiensi di atas 80%.  Kata kunci: adsorpsi, kadmium, kromium, tongkol jagung AbstractHeavy metal is a term for metals such as Cd, Cr, Cu, Hg, Ni, Pb, and Zn, often associated with pollution and toxicity. Adsorption is the most commonly used method to remove metal ions. Corncob have the potential to be an adsorbent because of their high cellulose content. This study aimed to examine the performance of corncob as an adsorbent of Cr(VI) and Cd(II) ions. The study began with the pretreatment of the adsorbent and continued with the adsorption process. Heavy metal concentration was calculated by the spectrophotometric method. The value of the absorption efficiency of Cd(II) increased with the pretreatment using high temperature. The amount of metal adsorbed increased with the length of adsorption time with the absorption efficiency of 94.76% for Cr(VI) and 83.96% for Cd(II). The addition of corncob adsorbent also increased the efficiency of chromium metal absorption up to 82.33% and cadmium by 83.98%. Meanwhile, the amount of Cr(VI) ion adsorbed was not linear with increasing stirring speed. Based on the results, it can be concluded that corncob could be used as heavy metal ion adsorbents with an efficiency above 80%. Keywords: adsorption, cadmium, chromium, corn cob

scholarly journals Use of SPIONs for Removal of Heavy Metal and its Isotherm Studies

2020 ◽  
Vol 2 (1) ◽  
pp. 40
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Superparamagnetic Iron Oxide ◽  
Anthropogenic Pollution ◽  
Absorption Efficiency ◽  
Batch Adsorption ◽  
Oxide Nanoparticles ◽  
Proper Treatment ◽  
Industrial Activity ◽  
Adsorption Study

The presence of heavy metals is unpreventable in the current era leading to anthropogenic pollution and production of toxicants such as hexavalent chromium [Cr(VI)] to the environment. It is a common, known carcinogen to humans through inhalation as well as ingestion. With proper treatment of the effluents from industrial activity, the concentration of Cr(VI) would be minified and eliminated. Superparamagnetic iron oxide nanoparticles (SPIONs) were once employed to evaluate its absorption efficiency against Cr(VI). The research now centered the concern on Cr(VI) elimination with SPIONS with carbon and used in batch adsorption study with optimized pH, adsorbent, and adsorbent-adsorbate concentrations. The adsorption then evaluated the result by Langmuir, Freundlich, and Temkin isotherms.

A NATIONWIDE SURVEY OF HEAVY METAL ABSORPTION IN CHILDREN LIVING NEAR PRIMARY COPPER, LEAD, AND ZINC SMELTERS

1977 ◽  
Vol 106 (4) ◽  
pp. 261-273 ◽  
Author(s):  
EDWARD L BAKER ◽  
CARL G HAYES ◽  
PHILIP J. LANDRIGAN ◽  
JAN L. HANDKE ◽  
RONALD T. LEGER ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Nationwide Survey ◽  
Lead And Zinc ◽  
Metal Absorption ◽  
Copper Lead

Heavy-metal absorption by soybean on sewage sludge treated soil

1986 ◽  
Vol 34 (4) ◽  
pp. 750-753 ◽  
Author(s):  
Muchha R. Reddy ◽  
Samuel J. Dunn
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Treated Soil ◽  
Metal Absorption

scholarly journals TEKNOLOGI FITOREMEDIASI UNTUK PENANGANAN PENCEMARAN LOGAM BERAT DI LAHAN PERTANIAN DI KECAMATAN KEBAKKRAMAT KABUPATEN KARANGANYAR

2020 ◽  
Vol 18 (1) ◽  
pp. 25-36
Author(s):  
MMA. Retno Rosariastuti ◽  
Supriyadi Supriyadi ◽  
Wiwin Widiastuti
Keyword(s):  
Heavy Metal ◽  
Agricultural Land ◽  
Heavy Metal Contamination ◽  
Low Cost ◽  
Research Result ◽  
Paddy Fields ◽  
Metal Absorption ◽  
High Metal ◽  
Selection Of ◽  
Soil Cd

Research aim of heavy metal pollution handling in agricultural land use fitoremediation technologyis to know the effectivity of hemp and mendong plant used and it’s combination with rhizobacterial isolates Agrobacterium sp I3 or organic materials in order to decrease  the levels of heavy metal contamination in the soil such as cromium (Cr), cadmium  (Cd) and plumbum (Pb).The research was conducted in Waru Village Kebakkramat Sub-District Karanganyar Regency in 2016. The location is a subdistrict in Karanganuyar Regency whose area has many industries, mainly textile industry.Industrial wastewater in this region is widely used to irrigate rice fields by farmers, so the paddy fields have been polluted by Cr, Cd and Pb.Therefore, it is necessary to decrease the contamination of heavy metals in paddy fields with the selection of environmentally friendly remediation technology, low cost, easy and sustainable.The method of remediation in that category is bioremediation using a plant called phytoremediation.For that required plants that have rapid growth and high metal absorption capability.The character are owned by hemp and mendong plants.Based on previous research obtained Agrobacterium sp I3 rhizobacteria which proved able to increase the uptake of Cromium by hemp plant.The research result showed that hemp and mendong plants can absorb metal either Pb, Cd, or Cr.Based on the amount of metal absorption value in root and plant canopy, hemp plant and mendong shows its ability as hyper akumulator plant (the amount of uptake ≥ 100 ppm).The highest decrease of soil Pb content was 39,406% without treatment of basic fertilizer, with rhizobacterial inoculation Agrobacterium sp I3 and hemp plant.The highest decrease of soil Cd content was 56,604% with treatment with basic fertilizer, with inoculation of rhizobacteria Agrobacterium sp I3 and mendong plant.The highest decrease of Cr content of soil was 42,27% with treatment of basic fertilizer, without inoculation of Agrobacterium sp sp I3 and without hemp and mendong plants.

scholarly journals SORPTION OF HEAVY METAL CATIONS FROM A WATER-SALT SYSTEMBY NATURAL MONTMORILLONITE

2021 ◽  
Vol 73 (1) ◽  
pp. 204-212
Author(s):  
U. Zh. JUSSIPBEKOV ◽  
◽  
R.M. CHERNYAKOVA ◽  
A.A. АGATAYEVA ◽  
N.N. KOZHABEKOVA ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Cations ◽  
Sorption Process ◽  
Absorption Efficiency ◽  
Optimal Conditions ◽  
Heavy Metal Cations ◽  
Water Salt ◽  
Bentonite Clays ◽  
Effective Use ◽  
Degree Of Sorption

The sorption properties of natural montmorillonite from the Tagan deposit with respect to heavy metal cations were researched on the model system "Mn2+–Co2+– Ni2+–V4+–H2O–montmorillonite". The influence of temperature, duration of the process and concentration of solutions, as well as the norm of the sorbent on the degree of sorption of cations is considered. The optimal conditions for the sorption process (25о С, 30 min, Т:Ж = 1,5:100) have been determined, at which the degree of solution purification is up to 86.36% cations of Co2+, 85.59% of Ni2+, 82.64% of Mn2+ and 52.29% of V4+. The nature of the sorption curves is determined by the nature of the sorbed cation. According to the absorption efficiency of natural montmorillonite, ions are arranged in the following order: Ni2+≥ Co2+> Mn2+> V4+. The results of the conducted studies indicate the possibility of effective use of bentonite clays of the Tagan field in the purification of wastewater from heavy metal cations

scholarly journals A New Method of Environmental Assessment and Monitoring of Heavy Metal Polluted Soil Using Fruticose Lichens

2016 ◽  
Author(s):  
Yuri Sueoka ◽  
Masayuki Sakakibara ◽  
Sakae Sano ◽  
Yoshikazu Yamamoto
Keyword(s):  
Heavy Metal ◽  
Soil Analysis ◽  
Polluted Soil ◽  
Monitoring Method ◽  
Metal Concentrations ◽  
Practical Applications ◽  
Distribution Maps ◽  
Heavy Metal Concentrations ◽  
Metal Absorption ◽  
Assessment And Monitoring

Soil pollution has been estimated using soil analysis and leaching test. These methods could show different data from reality due to effects by soil properties such as grain size and mineral composition. Therefore, this study advocates a new assessment and monitoring method of heavy metal polluted soil using fruticose lichens. Lichens growing at abandoned mine sites and unpolluted areas in southwest Japan and their substrata were analyzed using inductively coupled plasma-mass spectrometry and X-ray fluorescence spectrometry to clarify the relationships between the heavy metal concentrations in lichens and soils, and their heavy metal absorption properties. Concentrations of Cu, Zn, As, and Pb in the lichens were positively correlated with those in the soil. Variability of the relationships did not depend on the lichen species, location, habitat, or the conditions of soils. The analyzed lichens had neither competitive nor antagonistic properties in their heavy metal absorption, which make them good biomarkers of heavy metal pollution of soil. The distribution maps of average heavy metal concentrations at each sampling region detected almost all of the Cu, Zn, and As pollution of soil. Therefore, lichens could be used in practical applications to assess Cu, Zn, and As pollution of soils.

scholarly journals Heavy Metal Retention by Different Forest Species Used for Restoration of Post-Mining Landscapes, N. Greece

2020 ◽  
Vol 12 (11) ◽  
pp. 4453
Author(s):  
Theano Samara ◽  
Ioannis Spanos ◽  
Panagiotis Platis ◽  
Thomas G. Papachristou
Keyword(s):  
Heavy Metal ◽  
Tree Species ◽  
Habitat Restoration ◽  
Robinia Pseudoacacia ◽  
Mining Area ◽  
Pinus Nigra ◽  
Forest Species ◽  
Northern Greece ◽  
Black Poplar ◽  
Metal Absorption

The main objective of this research was to study heavy metal absorption by the leaves of main forest species which were planted for that purpose at post-lignite mining landscapes in Northern Greece (Ptolemais, Prefecture of Kozani), as well as in a neighboring region (Kato Grammatiko), 30 km far from the mining area. Four species were studied; two conifers (Pinus nigra Arn., Cupressus arizonica Greene) and two broad-leaved (Robinia pseudoacacia L., Populus nigra L.). The four species varied in their leaf morphology (needles, scale-like leaves, blade, compound or simple, with rough or smooth surfaces). Eighty (80) leaf samples were collected, (10 from each tree species at either site). The heavy metal concentrations measured were iron (Fe), copper (Cu), chromium (Cr), nickel (Ni), cadmium (Cd), manganese (Mn), zinc (Zn) and cobalt (Co). Statistically significant differences (p = 0.01) were found between the lignite deposit and control areas and among the studied species. Higher concentrations were measured for the studied species at the lignite deposit. Moreover, no species demonstrated maximum absorption for all metals. The metal absorption pattern by coniferous trees’ leaves at the mining landscape was similar, with highest concentrations observed for iron and lowest for cobalt [iron (Fe) > zinc (Zn) > manganese (Mn) > copper (Cu) > chromium (Cr) > nickel (Ni) > cobalt (Co)]. Both broadleaved species absorbed highest concentrations of iron, but differed in the amount of the remaining metals [black locust: iron (Fe) > manganese (Mn) > zinc (Zn) > copper (Cu) > nickel (Ni) > chromium (Cr); black poplar: iron (Fe) > zinc (Zn) > manganese (Mn) > copper (Cu) > nickel (Ni) > chromium (Cr) > cobalt (Co)]. Cadmium was detected only in black poplar at both sites. In general, black pine was found to absorb the highest concentration of iron (Fe), and black poplar zinc (Zn). We discuss the importance of carefully selecting the appropriate mixture of tree species in order to achieve maximum habitat restoration effect at heavy metal polluted sites.

Sign in / Sign up

Export Citation Format

Share Document