scholarly journals Trace Elements in the Nizhne-Bureysk Reservoir Tributaries Water

2016 ◽  
pp. 15
Author(s):  
Keyword(s):  
Trace Elements ◽  
Cadmium Concentration ◽  
High Water ◽  
Aluminum Concentration ◽  
Small Rivers ◽  
Content Increase ◽  
High Concentration ◽  
Hydro Power ◽  
Iron Manganese ◽  
Iron And Manganese

Implementation of big scale projects on construction and operation of waterworks facilities is a serious factor of intervention into aquatic ecosystems functioning. The Bureya River and its tributaries water chemical composition was characterized with the results of the river water monitoring within the zone of the Nizhne-Bureysk hydro power station construction over the period of 2011-2014, and considerable variations of the small rivers’ water physical/chemical characteristics were demonstrated. Seasonal and many-year dynamics of the trace elements dissolved forms content was revealed. Higher concentrations of iron, manganese, copper, and mercury, as well as their considerable concentrations connected with the territory natural features were established. Small rivers’ waters that drain mostly effusive rocks are characterized by higher concentrations of iron and manganese while sediments are characterized by high concentration of aluminum. The seasonal and many-year character of the microelements dissolved forms is diverse and is mostly determined by the hydrological factor. In the high water 2013 a considerable increase in copper and barium runoff was registered in all tributaries while increase of aluminum concentration was found only in the Bureya, insignificant increase of the iron content was seen in all tributaries, and cadmium concentration increased only in some watercourses. As for all other trace elements, no marked content increase was observed.

Relict joints in completely decomposed volcanics in Hong Kong

1982 ◽  
Vol 19 (2) ◽  
pp. 117-123 ◽  
Author(s):  
Y. C. Koo
Keyword(s):  
Hong Kong ◽  
Manganese Oxides ◽  
Strength Testing ◽  
Residual Soil ◽  
High Concentration ◽  
Strength Parameters ◽  
Decomposition Products ◽  
Joint Surfaces ◽  
Iron Manganese ◽  
Iron And Manganese

In a major cutting in the completely decomposed volcanics in Hong Kong, closely spaced relict joints were found throughout the residual soil. The persistence of the exposed joint surfaces varies from several centimetres to more than 10 m. The joint surfaces, which are generally smooth and sometimes slickensided, are usually coated with a thin black-brown deposit. The origin of this deposit is believed to be the precipitation of iron-manganese decomposition products that have filled the joints in the parent rock during the course of weathering. Chemical analyses carried out on typical specimens have confirmed a high concentration of iron and manganese oxides. Results of laboratory shear strength testing show that the peak strength parameters along joint surfaces and of the intact material are: c′ = 0, [Formula: see text] and c′ = 6 kPa, [Formula: see text] respectively. Analyses of joint survey data indicate that relict joint orientations occur in systematic major sets and that joint spacings roughly follow a Poisson distribution.

Traitement physico-chimique d'une eau souterraine fortement chargée en fer et en manganèse

2000 ◽  
Vol 27 (4) ◽  
pp. 632-641
Author(s):  
Catherine Lessard ◽  
Donald Ellis ◽  
Jean Sérodes ◽  
Christian Bouchard
Keyword(s):  
Pilot Study ◽  
Manganese Oxides ◽  
Settling Tank ◽  
Free Chlorine ◽  
Target Area ◽  
High Concentration ◽  
Dose Ranging ◽  
Iron Manganese ◽  
Filter Bed ◽  
Iron And Manganese

Conventional greensand treatment for the removal of iron and manganese from groundwater is not quite appropriate for waters with a high content of iron and manganese. In this pilot study, different modifications to this process were tested to improve treatment performances for water with a high concentration of iron and manganese: addition of a settling tank, use of sand and anthracite covered with manganese oxides, and aeration. Different oxidants and oxidation sequences were also tested. Results show that the presence of a high quantity of iron significantly improves removal of manganese. These results also confirm that manganese oxidation can be realized with free chlorine inside a filter bed other than greensand, provided that the excess of free chlorine is sufficient. Within the conditions studied, the target area for filtration performances can be attained for every treatment sequence tested and for a filtering aid dose ranging from 0.25 to 0.5 mg/L. Although groundwater aeration leads to better settling performances, it also accelerates head loss in the filtering bed when a filtering aid is present.Key words: groundwater, iron, manganese, pilot study, treatment, separation.

scholarly journals Analyzing the major ions and trace elements of groundwater wells in Kuala Langat, Selangor

2021 ◽  
Vol 17 (1) ◽  
pp. 56-61 ◽  
Author(s):  
Hazimah Haspi Harun ◽  
Mohamad Roslan M. K. ◽  
S. Nurhidayu ◽  
Zulfa Hanan Asha’ari ◽  
Faradiella Mohd Kusin
Keyword(s):  
Trace Elements ◽  
Major Ions ◽  
Principal Component ◽  
Water Source ◽  
High Concentration ◽  
Suitable Alternative ◽  
Groundwater Samples ◽  
Alternative Water ◽  
Iron Manganese ◽  
Groundwater Wells

The analysis of trace elements and major ions on groundwater wells in Kuala Langat become the aim of this paper for the purposes to investigate the quality of the groundwater to be considered as a suitable alternative water source for domestic purposes. The groundwater sampling was conducted in thirteen stations of groundwater wells. The groundwater samples were taken from the groundwater wells which scatter in agricultural areas in Kuala Langat, Selangor. The major ions parameters have analyzed in the groundwater samples were calcium, magnesium, potassium, bicarbonate, chloride, and sulfate (Ca2+, Mg2+, K+, Na+, HCO3 -, Cl-, SO4 2-). Meanwhile, the trace element parameters were aluminum, iron, manganese, strontium, zinc, and copper (Al, Fe, Mn, Sr, Zn, and Cu). Principal Component Analysis (PCA) was conducted to determine the influence of major ions and trace elements concentration in groundwater. Chloride, potassium, magnesium, strontium, calcium, and bicarbonate (Cl-, Na+, K+, Mg2+, Sr2+, Ca2+, and HCO3 -) were principal parameters in the first component of PCA analysis. The concentration of trace elements shows iron is the high concentration in groundwater samples. Hence, the concentration of iron in current sampling shows exceed the recommended level for raw water of the Ministry of Health. The influences from seawater intrusion and Sodium Adsorption Ratio (SAR) in groundwater also have been discussed.

Trace element assessment in Neoechinorhynchus agilis (Rudolphi, 1918) (Acanthocephala: Neoechinorhynchidae) and its fish hosts, Mugil cephalus (Linnaeus, 1758) and Chelon ramada (Risso, 1827) from Ichkeul Lagoon, Tunisia

2021 ◽  
Vol 95 ◽  
Author(s):  
H. Jmii Chine ◽  
M. Nachev ◽  
B. Sures ◽  
L. Gargouri
Keyword(s):  
Trace Elements ◽  
Inductively Coupled Plasma ◽  
Mediterranean Area ◽  
Fish Muscle ◽  
Mugil Cephalus ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry ◽  
Fish Hosts ◽  
Host Parasite ◽  
Iron Manganese

Abstract Acanthocephalans belonging to the species Neoechinorhynchus agilis were collected from two mullets, Mugil cephalus and Chelon ramada from Ichkeul Lagoon in northern Tunisia. Collected parasites, as well as tissues of their hosts (muscle, liver and intestine), were analysed for trace elements (silver, arsenic, cadmium, cobalt, copper, iron, manganese, nickel (Ni), lead (Pb), selenium, vanadium (V), zinc) using inductively coupled plasma mass spectrometry. Our results showed different accumulation patterns of trace elements in fish tissues and parasites. Among the host tissues, liver accumulated the highest metal amounts. Acanthocephalans showed Ni, Pb and V in significantly higher concentrations compared to their host's tissues. Further, the calculated bioconcentration factors demonstrated a 390-fold higher Pb accumulation in the parasite compared to fish muscle. This study is the first field survey in Tunisia dealing with elements’ uptake in parasites and their hosts. Our results corroborate the usefulness of the acanthocephalans for biomonitoring of metal pollution in aquatic ecosystems and promote more research in order to understand host–parasite systems in brackish waters of the Mediterranean area.

Hydrothermal origin of elevated iron, manganese and redox-sensitive trace elements in the c. 635 Ma Doushantuo cap carbonate

2011 ◽  
Vol 168 (3) ◽  
pp. 805-816 ◽  
Author(s):  
Jing Huang ◽  
Xuelei Chu ◽  
Ganqing Jiang ◽  
Lianjun Feng ◽  
Huajin Chang
Keyword(s):  
Trace Elements ◽  
Hydrothermal Origin ◽  
Cap Carbonate ◽  
Iron Manganese

scholarly journals Effectiveness of caporite to reduce concentration of iron and mangan in Ciliwung river water as raw water PDAM

2021 ◽  
Vol 11 (1) ◽  
pp. 30
Author(s):  
Nadhila Aulia Dwiputri ◽  
Mia Azizah ◽  
Nurlela Nurlela
Keyword(s):  
River Water ◽  
Government Regulation ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Quality Standard ◽  
Raw Water ◽  
Jar Test ◽  
Iron Manganese ◽  
Manganese Level ◽  
Iron And Manganese

The water of the Ciliwung river used as raw water for PDAM Depok contains iron and manganese, which levels were quite high and exceeded the quality standard. The purposes of the research are to determine the effectiveness of caporite to reduce levels of iron and manganese to reach levels that meet the standards of Government Regulation Number 82 of 2001. The sample used in this study was the water of the Ciliwung river used as a source of raw water for PDAM Depok with two different water treatment plant (WTP) locations, location 1 in Legong WTP and location 2 in Citayam WTP. Raw water was taken using a submersible water pump located at the bottom of the Ciliwung river. The analytical method used as a reference for determining iron levels was based on the FerroZine Rapid Liquid Method 1970, and for manganese levels was based on 1- (2-Pyridylazo) -2-Naphthol PAN Method 1977, both methods using the Spectrophotometric method. The results showed that iron and manganese levels were quite high, exceeding the standards of Government Regulation No.82 of 2001 with a maximum standard of iron content is 0.3 mg/L, and a maximum standard of manganese level is 0.1 mg/L. After adding a certain dose of chlorine to Ciliwung river water in the Legong and Citayam WTPs, it was found that chlorine effectively reduced Fe and Mn levels because it was able to reduce levels up to 80% and meet the quality standards.Keywords: Caporite, Iron, Manganese, Ciliwung River, RegulationABSTRAKEfektivitas kaporit untuk menurunkan kadar besi dan mangan dalam air sungai Ciliwung sebagai air baku PDAMAir sungai Ciliwung yang digunakan sebagai air baku PDAM Depok terdapat zat besi dan mangan dengan kadarnya cukup tinggi serta melebihi ambang baku mutu. Tujuan penelitian ini untuk mengetahui efektivitas kaporit dalam menurunkan kadar besi dan mangan sehingga memenuhi standar baku mutu Peraturan Pemerintah Nomor 82 Tahun 2001 untuk kelas 1. Sampel air yang digunakan dalam penelitian ini diambil dari 2 titik lokasi Instalasi Pengolahan Air (IPA) yang berbeda, yaitu  dari IPA Legong dan  IPA Citayam. Sampel air baku diambil dengan menggunakan pompa air submersible (pompa celup) yang berada di dasar sungai Ciliwung. Penelitian dilakukan dengan eksperimen jar test di laboratorium. Metode analisis untuk menentukan kadar besi  mengacu pada FerroZine Rapid Liquid Method tahun 1970 dan mangan berdasarkan 1-(2-Pyridylazo)-2-Napthol PAN Method tahun 1977 dengan menggunakan metode Spektrofotometri. Hasil penelitian menunjukan kadar besi dan mangan yang cukup tinggi hingga melebihi standar yang telah ditetapkan dalam PP No.82 Tahun 2001 dengan kadar Fe maksimal 0,3 mg/L dan kadar Mn maksimal 0,1 mg/L. Setelah dilakukan penambahan bahan kimia kaporit ke dalam sampel air sungai Ciliwung  dari  IPA Legong dan Citayam, dengan dosis 10 mg/L untuk penurunan Fe dan 30 mg/L untuk penurunan Mn dapat efektif menurunkan konsentrasi Fe dan Mn  hingga 80%, dan memenuhi  standar baku mutu yang digunakan.Kata Kunci: Kaporit, Besi, Mangan, Sungai Ciliwung, Baku Mutu

Ground Water Use Near an Open Dumpsite in a Peri-urban Community

2021 ◽  
Vol 47 (2) ◽  
pp. 252-257
Author(s):  
O.A. Mokuolu ◽  
I. Olaniyi ◽  
J.O. Iji
Keyword(s):  
Calcium Nitrate ◽  
Quality Parameters ◽  
World Health ◽  
Total Hardness ◽  
High Concentration ◽  
Residential Community ◽  
Physico Chemical ◽  
High Turbidity ◽  
Health Organization ◽  
Iron Manganese

Quality of groundwater used for drinking and domestic purposes near an open dumpsite was investigated. Groundwater parameters for wells GW1, GW2, GW3 and GW4 were analysed and their values were compared with World Health Organization (WHO) and Nigerian Standard for Drinking Water Quality (NSDWQ). Physico-chemical and bacteriological analysis were carried out to determine the quality. Parameters analysed include; Temperature, Turbidity, Total Hardness, pH, Alkalinity, Electrical Conductivity, Total Dissolved Solids, Total Suspended Solids, Total Solids, Magnesium, E-coli, Calcium, Nitrate, BOD, COD, DO, Chloride, Sulphate, Iron, Manganese and Lead. The results indicated that all parameters except turbidity, iron and lead were within the standards, all samples showed high concentration of iron and lead while GW1, GW2 and GW3 showed high Turbidity. The study concluded that groundwater situated around the dumpsite is unfit for drinking purposes. An engineered landfill located away from residential community was recommended.

Temporal Variation in Leachate Composition of A Newly Constructed Landfill Site in Lahore in Context To Human and Environmental Risks

2021 ◽  
Author(s):  
Mahsoon Ashraf ◽  
Muhammad Zeshan ◽  
Sadia Hafeez ◽  
Rahib Hussain ◽  
Abdul Qadir ◽  
...  
Keyword(s):  
Trace Elements ◽  
Phenolic Compounds ◽  
Temporal Variation ◽  
Quality Standard ◽  
Landfill Site ◽  
High Concentration ◽  
Oil And Grease ◽  
Temporal Study ◽  
One Year ◽  
Leachate Composition

Abstract The present study was aimed to explore the seasonal and temporal variation in the extent and sources of physiochemical and trace elements in the Lakhodair solid waste Landfill site in Lahore, Pakistan. For the seasonal and temporal study of leachates, systematic composite samples were collected monthly (for one year) and analyzed for physiochemical and trace elements. The concentration of TDS, TSS, COD, NH3-N, BOD5, sulfate, sulfides, phenolic compounds, oil and grease were higher than the National Environmental Quality standard (NEQs). The trace elements, namely Mn (1.7 mg/L), and Cd (0.05 mg/L), while in a few samples Fe (14 mg/L), Ni (1.6 mg/L), and Zn (6.7 mg/L) were higher than the NEQs. In Lakhodair leachates, TDS, COD, NH3-N, BOD5, sulfides, and Cl have a high concentration coefficient (i.e., CC 3 to > 6), which may cause considerable to high contamination, while remaining parameters may cause low to moderate contamination (CC 1 to ≤ 3). The lower BOD5/COD ratio (< 0.1) in the Spring and Autumn seasons, represents the active methanogenesis and anaerobic activities in the Lakhodair landfill site. The anaerobic and methanogenesis enhance the redox reaction as a result CO2 is emitted and alternatively increases pH, TDS, COD, Cl, BOD5, NH3-N, sulfides, phenolic compounds in leachates. However, the lower concentration of some trace elements may be because of an anaerobic process that may immobilize the trace elements. It is presumed that the trace elements in the Lakhodair landfill may be in a metastable state, which is not easy to leach out. It’s hereby recommended that Leachate produced in the Lakhodair landfill site need to handle carefully so as to limit the environmental and health implication.

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