Heavy Metals Contamination Assessment of Water and Soils in and Around Barapukuria Coal Mine Area, Bangladesh
Md. Hafijur Rahaman Khan,
Ashraf Ali Seddique,
Ananna Rahman,
Yuta Shimizu
Issue:
Volume 6, Issue 4, August 2017
Pages:
80-86
Received:
12 May 2017
Accepted:
21 June 2017
Published:
18 July 2017
Abstract: In order to evaluate the heavy metals contamination of groundwater in Barapukuria Coal Mine (BCM) area and its vicinity, nine groundwater samples from different location, two waste water either treated and/or untreated that were used to irrigate in and around the coal mine areas, three surficial soil samples (~20cm depth) and a coal dust sample were collected during March, 2015. The samples were analyzed by inductively coupled plasma mass spectrometry (ICP–MS). Each sample was analyzed for As, Mn, Fetotal, Cu, Pb, Zn, Mo, Ni, Co, Cr, Cd and Hg. It was found that As, Cu, Pb, Zn, Mo, Co, Cr, Cd and Hg did not exhibit significant elevated levels, but concentration of Mn, Fetotal and Ni ranging from 0.15 to 3.85mg/L, 0 to 1.88mg/L and 0.01 to 0.09mg/L respectively both in groundwater and mine waste water samples exceeded the World Health Organization (WHO, 2004) drinking water guideline values of 0.4mg/L of Mn, 0.3 mg/L of Fe and of 0.02mg/L of Ni. Similarly the mean heavy metal concentrations in soils were below the Bangladesh standards for all heavy metals but the maximum values of Co (137.25 to 245.24mg/kg), Cr (139.02 to 243.38mg/kg) and Hg (0 to 24.28mg/kg) also exceeded the maximum acceptable limit of Food and Agricultural Organization (FAO, 1992) (Co of 50mg/kg, Cr of 100mg/kg) and Environment Agency (EA, 2009) (Hg of 1mg/kg) guideline standard. However, the coal dust was not above the guideline recommended limit for any elements. Therefore, this study reveals that the use of treated and/or untreated coal mine waste water for irrigation has increased the risk of heavy metals contamination in groundwater and causing potential health hazards in the long time term.
Abstract: In order to evaluate the heavy metals contamination of groundwater in Barapukuria Coal Mine (BCM) area and its vicinity, nine groundwater samples from different location, two waste water either treated and/or untreated that were used to irrigate in and around the coal mine areas, three surficial soil samples (~20cm depth) and a coal dust sample wer...
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Study on the Reuse of Brownfield in Countries
Zhang Min,
Li Jingyi,
Xie Ya
Issue:
Volume 6, Issue 4, August 2017
Pages:
87-93
Received:
24 May 2017
Accepted:
12 June 2017
Published:
26 July 2017
Abstract: With the development of China's sustainable development strategy, the problem of tan land is attracting more and more attention. Reusing of brown land is one of the important ways to promote the restoration of natural ecology and construct livable city. Many developed countries use advanced technology to make a positive transformation of brown land, and have achieved good results. Their management experience has a good reference to Chinese brownfields.
Abstract: With the development of China's sustainable development strategy, the problem of tan land is attracting more and more attention. Reusing of brown land is one of the important ways to promote the restoration of natural ecology and construct livable city. Many developed countries use advanced technology to make a positive transformation of brown land...
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Treatment of Hazardous Solid Waste Using Solidification and Stabilization Technique
Yamuna Rani M.,
Bhagawan D.,
Saritha P.,
V. Himabindu,
V. Venkateswara Reddy
Issue:
Volume 6, Issue 4, August 2017
Pages:
94-100
Received:
27 May 2017
Accepted:
30 June 2017
Published:
31 July 2017
Abstract: The immobilization of toxic metals present in the pharmaceutical effluent treatment plant (ETP) sludge is studied using the solidification/stabilization (S/S) technique. Different mixtures of cement, lime and bentonite as binders and additives (Pulverized fuel ash (PFA), silica fume and quarry dust) are used in order to reduce the mobility of the metal constituent of the pharma sludge as well as to strengthen brick. The interaction between the S/S matrix were studied using X-ray diffraction spectroscopy (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Thermo gravimetric-Differential Thermal Analysis (TG- DTA), Unconfined Compression Strength, Toxicity characteristics leaching procedure (TCLP) tests. The results showed that the optimized composition matrix have a strong fixing capacity for heavy metal includes Cu, Zn, Fe, Co, Pb, Ni and Cd. All the specimens have been observed to be sufficient in achieving the target compressive strength of 0.3 N/mm2 required for landfill disposal and mixed binders (Cement, Lime, and Bentonite) brick can be recommended for external use in construction i.e. for pave of pedestrian roads.
Abstract: The immobilization of toxic metals present in the pharmaceutical effluent treatment plant (ETP) sludge is studied using the solidification/stabilization (S/S) technique. Different mixtures of cement, lime and bentonite as binders and additives (Pulverized fuel ash (PFA), silica fume and quarry dust) are used in order to reduce the mobility of the m...
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The Holy Koran Revelation: Iron Is a “Sent Down” Metal
Issue:
Volume 6, Issue 4, August 2017
Pages:
101-104
Received:
5 July 2017
Accepted:
18 July 2017
Published:
11 August 2017
Abstract: One of the most important grants of God Almighty to mankind is iron. The reality that there is a Chapter named “Al-Hadid” (Iron) in the Holy Koran can be considered as a sign of its significance. The reality that there is not a Chapter called “adh-Dhahab” (Gold) might be a sign that iron is more crucial than gold since life would go on if gold did not exist but it would not be easy to mention human civilization without iron. Iron is (1) the essential of all of the arts, (2) the source of human development and progress, and (3) in the center of the strength of man. Due to its functions mentioned above and similar ones, the following is stated in the Koran: “…and We sent down Iron, in which is (material for) mighty war, as well as many benefits for mankind...”. The fact that this Verse particularly introduces iron is completely astonishing, taking into account that these findings were realized at the termination of the 20th century.
Abstract: One of the most important grants of God Almighty to mankind is iron. The reality that there is a Chapter named “Al-Hadid” (Iron) in the Holy Koran can be considered as a sign of its significance. The reality that there is not a Chapter called “adh-Dhahab” (Gold) might be a sign that iron is more crucial than gold since life would go on if gold did ...
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