Use of beetroot fibers to clean water contaminated with heavy metals, to soften hard water, and to desalinate seawater

2004 ◽  
Vol 86 (2) ◽  
pp. 105-116 ◽  
Author(s):  
Jamil Rima ◽  
Emile Aoun ◽  
Khalil Hanna
Keyword(s):  
Heavy Metals ◽  
Hard Water ◽  
Clean Water

ANALISA LOGAM BESI (Fe) DI SUNGAI PASAR DAERAH BELANGWETAN KLATEN DENGAN METODE SPEKTROFOTOMETRI SERAPAN ATOM

2017 ◽  
Vol 2 (1) ◽  
pp. 39
Author(s):  
Rahmi Nurhaini ◽  
Arief Affandi
Keyword(s):  
Heavy Metals ◽  
Sampling Method ◽  
Research Result ◽  
The Body ◽  
Clean Water ◽  
Observational Method ◽  
The Mean ◽  
The Republic

Iron (Fe) is one of many heavy metals that is corrosive resistant, dense, and has a low melting point. If accumulated in the body, the metal can cause some medical conditions, such as irritation to skin and eyes, breathing problems, and in the long term, cancer. This research aims to know generally the spread of metallic iron (Fe) in the river Pasar in Belangwetan, Klaten. This study was conducted using an observational method in which researchers did not examine the effects of interventions. Sampling was done using purposive sampling method taken from three points, namely the upper, middle, lower. Determination of iron levels by Atomic Absorption Spectrophotometer (AAS) obtained a positive result, and the data was processed using SPSS to determine the Mean and Standard Deviation. Of the research result, it could be known the Mean score was 2.33 ppm and SD was 0.0352. The result of this research indicated that the levels of iron in the river Pasar in Belangwetan were 2.33 ppm. It means that the levels violate the regulation of the Minister of Health of the Republic of Indonesia, which is not more than 1mg/L (1ppm) in the clean water

Chemical dynamics of acidity and heavy metals in a mine water-polluted soil during decontamination using clean water

2010 ◽  
Vol 175 (1-3) ◽  
pp. 638-645 ◽  
Author(s):  
A. Chen ◽  
C. Lin ◽  
W. Lu ◽  
Y. Ma ◽  
Y. Bai ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Mine Water ◽  
Polluted Soil ◽  
Clean Water ◽  
Chemical Dynamics

scholarly journals Penentuan Kadar Logam Tembaga pada Perairan dan Sedimen di Limbah Pertambangan Tradisional Desa Perabu Kabupaten Lombok Tengah

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Dodiy Firmansyah ◽  
Elly Sustiyani
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Extraction Method ◽  
Clean Water ◽  
Copper Compound ◽  
Sediment Samples ◽  
Metal Levels

.  Prabu’s people in central Lombok regency make traditional mining for their livelihood. Coppers are one of the wastes from traditional mining, which is dumped into rivers can pollute the waters used by humans a source of clean water. Heavy metals in biota consumed by humans and transmit various diseases, This research to determination  copper compound  in waters and sediments. The are two puposes of this reseach: (1) to determine coppers in waters and sediments, and (2) to determine copper compound. There are three steps of this reseach: (1) conducting sampling, (2) pretreatment of sediment samples, (3) determining heavy metal levels with the fraction 1 stepwise extraction method (ELFE), and (4) analyzing  copper compound . The result showed that  copper compound increasing in locations B and C, contain 0.065 mg / L and 0.051 mg / L in water and contain 89 mg/kg, 85 mg/kg in sediment

India: country report on children’s environmental health

2020 ◽  
Vol 35 (1) ◽  
pp. 27-39
Author(s):  
Narayanaswamy Bangalore Thimmadasiah ◽  
Tushar Kant Joshi
Keyword(s):  
Heavy Metals ◽  
Air Pollution ◽  
Burden Of Disease ◽  
The Other ◽  
Clean Water ◽  
Industrial Chemicals ◽  
Country Report ◽  
Children’S Environmental Health ◽  
Improved Sanitation ◽  
The One

AbstractChildren contribute substantially to the burden of disease in India. Most common are problems with outdoor and household air pollution, with solutions not immediately apparent or implementable. Children are also often exposed to heavy metals, industrial chemicals and pesticides. Despite advances in some regions, many children still do not have adequate access to clean water and improved sanitation. Infectious diseases remain a problem, especially for children living in poverty. The children of these regions are now facing the dual problems of undernutrition and stunting on the one hand, and overnutrition and obesity on the other.

scholarly journals Ion-capture electrodialysis using multifunctional adsorptive membranes

Science ◽  
2021 ◽  
Vol 372 (6539) ◽  
pp. 296-299
Author(s):  
Adam A. Uliana ◽  
Ngoc T. Bui ◽  
Jovan Kamcev ◽  
Mercedes K. Taylor ◽  
Jeffrey J. Urban ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Water Treatment ◽  
Water Sources ◽  
Clean Water ◽  
Water Treatment Plants ◽  
Porous Aromatic Framework ◽  
Global Demand ◽  
One Step ◽  
Separation Strategy ◽  
Competing Ions

Technologies that can efficiently purify nontraditional water sources are needed to meet rising global demand for clean water. Water treatment plants typically require a series of costly separation units to achieve desalination and the removal of toxic trace contaminants such as heavy metals and boron. We report a series of robust, selective, and tunable adsorptive membranes that feature porous aromatic framework nanoparticles embedded within ion exchange polymers and demonstrate their use in an efficient, one-step separation strategy termed ion-capture electrodialysis. This process uses electrodialysis configurations with adsorptive membranes to simultaneously desalinate complex water sources and capture diverse target solutes with negligible capture of competing ions. Our methods are applicable to the development of efficient and selective multifunctional separations that use adsorptive membranes.

scholarly journals Remediation of Arsenic in Water Using Unique Ashed Biomass Material

2019 ◽  
pp. 1-6 ◽  
Author(s):  
Kenneth L. Dorris ◽  
Shyam S. Shukla ◽  
Mohammad Musaddaq
Keyword(s):  
Heavy Metals ◽  
Drinking Water ◽  
Water Resources ◽  
Ion Exchange ◽  
Water Supply ◽  
Mangifera Indica ◽  
Waste Material ◽  
Drinking Water Supply ◽  
Clean Water ◽  
Neem Leaves

The contamination of the world’s water supply due to various contaminants has caused the clean water supply to shrink around the globe. The problem is not only an issue with developing nations; in fact, many developed countries are facing the same turmoil. With the globalization, industrialization and weak enforcement of environmental regulations, waste water is discharged into clean water resources whereby contaminating the water. Out of the long list of contaminants many heavy metals find their way into the clean drinking water supply. The heavy metals arsenic (As), lead (Pb), and mercury (Hg) as well as many others are also discharged into water resources. There are numerous methods for removal of these heavy metals from water including filtration, chemical precipitation, ion exchange, adsorption, electro deposition as well as others but most are expensive and or not completely satisfactory. Arsenic and its compounds are often used as pesticides, herbicides, insecticides and various alloys and often find their way into the drinking water supply through various industrial sources. A cost-effective remediation of arsenic in water using readily available material is urgently needed. An ashed waste material consisting primarily of Azadirachta indica (Neem leaves) and Mangifera indica (Mango leaves) has been found effective in removing both arsenic (III) and (V) from water. The utilization of this ashed material achieves the concept of using waste material from one source, used by another and therefore benefiting both. The adsorbent is very effective at pH =7 and ion exchange appears to be the major adsorption mechanisms for binding the metal ions to the plant ash material. The material shows sufficient operation capacity to indicate the possibility of its use in remote rural areas as well as in an urban water treatment facility.

scholarly journals Assessing Uptake Kinetics and Natural Depuration of Lead and Cadmium in African Catfish Juvenile

2020 ◽  
Vol 24 (2) ◽  
pp. 207-211
Author(s):  
B.B. Babatunde ◽  
C.S. Dike ◽  
C.J. Ibekwe
Keyword(s):  
Heavy Metals ◽  
Uptake Kinetics ◽  
Average Weight ◽  
African Catfish ◽  
Clean Water ◽  
Range Finding ◽  
Lead And Cadmium ◽  
Cadmium Treatment ◽  
Subsequent Exposure ◽  
Kinetics Of

This study was carried out to assess the uptake kinetics of two heavy metals lead and cadmium in African catfish juveniles and their ability to  depurate during subsequent exposure to clean water. Catfish juveniles with average weight and length of 5.3g and 5.8cm respectively were  randomly selected and acclimatized for two weeks. A 24-hour range finding test was carried out. In the definite test, the fish were stocked in 24 tanks containing 5litres of water with lead and cadmium treatment separately labeled according to predetermined concentrations 5, 10, 15, 20, 25 mg for lead and cadmium with 4 fish in each treatment. The water and fish were analyzed for the metals after 5 days to show percentage uptake of the metals from the water. The fish were transferred back into clean water to access the rate of depuration and water was changed continuously. After 4 days the fish were analyzed again to see if they were purged of the heavy metals. Based on these findings catfish have shown to be good accumulators of heavy metals but can be depurated if allowed to swim in clean water. Uptake percentage after the period of exposure to 5mg,  10mg, 15mg, 20mg, 25mg concentrations were 18.68, 10.17, 5.95, 1.41, 8.26 for cadmium and 20.47, 10.17, 8.76, 9.92, 10.08 for lead; Percentage of metals depurated after 4 days were 40.00, 80.70, 90.00, 77.78, 45 for cadmium and 73.045, 20.413, 41.425, 37.580, 61.141 for lead. Lead was readily taken but cadmium was readily depurated. Keywords: Heavy metals, juvenile catfish, exposure, uptake and depuration

scholarly journals Construction machine scrubbing, water management

2021 ◽  
Vol 263 ◽  
pp. 04030
Author(s):  
Luis Guillermo Dipotet Mollinedo
Keyword(s):  
Water Management ◽  
Heavy Metals ◽  
Groundwater Table ◽  
Construction Equipment ◽  
Clean Water ◽  
Water Tank ◽  
Clear Water ◽  
Construction Company ◽  
Pollution Problem ◽  
Construction Machine

Faced with the pollution problem that they generate, the discharge of large volumes of wastewater, to the groundwater table, caused by cleaning operations in the machine scrubbing facilities and construction equipment in the network of workshops of the construction company in La Republic of Cuba. The work for the solution of the proposed problem consists of the projection and execution of an installation, for the sedimentation of clay, dust, stones, heavy metals, as well as swimming fats, as a treatment, for the separation of solids, from the rest of the components of wastewater that result from the scrubbing process of construction equipment. The installation for the recovery of these important volumes of water; which is the essence of this article; its operation is based on the discrimination of waste, by its specific weights, resulting from scrubbing. For the processing of wastewater, a treatment system is conceived, with two multiple tanks placed in “cascades” where the settling of the solids is guaranteed, by undergoing two consecutive filtrations. At the end of the process, clean water is obtained, which will be reused for a new scrubbing, which accumulates in a clear water tank, thereby contributing to the saving of drinking water and energy, so necessary in human activity.

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