An impact evaluation of the pollutive effect of mine waters from two abandoned mining sites in the Suceava County, Romania

2021 ◽  
Vol 14 (24) ◽  
Author(s):  
Ruxandra Ionce ◽  
Florin Florea
Keyword(s):  
Impact Evaluation ◽  
Mine Waters ◽  
Mining Sites

Hydrochemical characteristics of mine waters from abandoned mining sites in Serbia and their impact on surface water quality

2013 ◽  
Vol 20 (11) ◽  
pp. 7615-7626 ◽  
Author(s):  
Nebojša Atanacković ◽  
Veselin Dragišić ◽  
Jana Stojković ◽  
Petar Papić ◽  
Vladimir Živanović
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Surface Water Quality ◽  
Hydrochemical Characteristics ◽  
Mine Waters ◽  
Mining Sites

scholarly journals Analysis and Feasibility of Measures to Minimize the Impact of Acid Mine Waters Discharged by Abandoned Copper-Sulphide Mines on Hydrosphere of the Tagil River

2020 ◽  
Vol 177 ◽  
pp. 04009
Author(s):  
Liudmila Ribnikova ◽  
Vera Navolokina
Keyword(s):  
New Technologies ◽  
Copper Sulphide ◽  
Mine Waters ◽  
Mining Sites ◽  
Acid Mine ◽  
Natural Factors ◽  
Iron Copper ◽  
Acid Mine Waters ◽  
The Impact ◽  
Acid Waters

Mass closure of copper-sulphide mining sites both in the Sverdlovsk Region and worldwide resulted in the emergence of environmental challenges. One of such challenges is generation and discharge of acid mine waters. Manmade and natural factors have their impact on chemical composition of mine waters due to activation of sulphides oxidation processes taking place in disturbed rock mass and mines. Concentrations of components in treated mine waters are much higher than MAC (dozens and hundreds of times for iron, copper and zinc). That results in pollution of hydrosphere which goes on for decades and spreads over large distances along rivers. Quite a few reasons cause environmental degradation of hydrosphere in old industrial districts. These are baseline amounts of metals in the hydrosphere, low rates of self-rehabilitation of dead pits, high amounts of acid waters, high amounts of contaminants in mine waters, imperfection of treatment systems. Given the demand of mine waters treatment over decades, improvement of existing treatment systems and implementation of new technologies are required.

Environmental Radioactivity Assessment Around Old Uranium Mining Sites Near Mangualde (Viseu), Portugal

2007 ◽  
Author(s):  
Fernando P. Carvalho ◽  
Joa˜o M. Oliveira ◽  
Lube´lia M. Torres
Keyword(s):  
Underground Mining ◽  
Uranium Mining ◽  
Environmental Radioactivity ◽  
Mining Waste ◽  
Mine Waters ◽  
Mining Sites ◽  
Water Ph ◽  
Mine Sites ◽  
Mining Works ◽  
Food Chain Transfer

Uranium ore was extracted in the surroundings of Mangualde city, North of Portugal, in the mines of Cunha Baixa, Quinta do Bispo and Espinho until a few years ago. Mining waste, milling tailings and acid mine waters are the on site remains of this extractive activity. Environmental radioactivity measurements were performed in and around these sites in order to assess the dispersal of radionuclides from uranium mining waste and the spread of acidic waters resulting from the in situ uranium leaching with sulphuric acid. Results show migration of acid waters into groundwater around the Cunha Baixa mine. This groundwater is tapped by irrigation wells in the agriculture area near the Cunha Baixa village. Water from wells displayed uranium (238U) concentrations up to 19 × 103 mBq L−1 and sulphate ion concentrations up to 1070 mg L−1. These enhanced concentrations are positively correlated with low water pH, pointing to a common origin for radioactivity, dissolved sulphate, and acidity in underground mining works. Radionuclide concentrations were determined in horticulture and farm products from this area also and results suggest low soil to plant transfer of radionuclides and low food chain transfer of radionuclides to man. Analysis of aerosols in surface air showed re suspension of dust from mining and milling waste heaps. Therefore, it is recommended to maintain mine water treatment and to plan remediation of these mine sites in order to prevent waste dispersal in the environment.

Impact Evaluation

2019 ◽  
Author(s):  
Markus Frölich ◽  
Stefan Sperlich
Keyword(s):  
Impact Evaluation

The Impact Evaluation of the Maryland Break the Cycle Initiative

2003 ◽  
Author(s):  
Adele Harrell ◽  
John Roman ◽  
Avinash Bhati ◽  
Barbara Parthasarathy
Keyword(s):  
Impact Evaluation ◽  
The Impact

DAMPAK DAN IMPLEMENTASI BANTUAN PEMERINTAH TERHADAP PEMBERDAYAAN MASYARAKAT KABUPATEN BANGGAI

2019 ◽  
Vol 5 (1) ◽  
pp. 77
Author(s):  
Andi Hartati
Keyword(s):  
Impact Evaluation ◽  
Cluster Sampling ◽  
One Stage

Tujuan penelitian ini adalah untuk menganalisis dampak dan implementasi bantuan pemerintah daerah terhadap pemberdayaan masyarakat Kabupaten Banggai. Penentuan daerah sampel dilakukan Teknik pengambilan sampel yang dilakukan menggunakan Metode One-Stage Cluster Sampling yang merupakan teknik memilih sebuah sampel dari kelompok-kelompok unit yang kecil atau membagi populasi menjadi kelompok atau kluster. Beberapa kluster kemudian dipilih sebagai wakil dari populasi yaitu Kecamatan Luwuk Timur, Kecamatan Luwuk Utara dan Kecamatan Luwuk dengan mempertimbangkan jumlah dan jenis bantuan pemerintah yang diterima. Kemudian seluruh elemen dalam kluster terpilih dijadikan sebagai sampel penelitian. Metode   analisis data dengan menggunakan metode deskriptif untuk menjelaskan gambaran umum mengenai Dampak Dan Implementasi Bantuan Pemerintah Terhadap Pemberdayaan Masyarakat Kabupaten Banggai dengan menggunakan metode ImportancePerformance Analysis (IPA). Pengukuran faktor dilakukan membandingkan antara harapan dan kinerja pelaksanaan bantuan pemerintah terhadap pemberdayaan masyarakat Kabupaten Banggai. Metode ini dilakukan dengan pendekatan evaluasi dampak (impact evaluation). Hasil penelitian menunjukkan bahwa implementasi bantuan pemerintah terhadap pemberdayaan masyarakat Kabupaten Banggai diperoleh hasil bahwa bantuan pemerintah yang diberikan kepada masyarakat 99 persen tepat jumlah, 99 persen guna namun 18, 87 persen tidak tepat sasaran, 25, 31 persen tidak tepat waktu. Berdasarkan hasil perhitungan SPSS 17 nilai Sig (2-tailed) adalah sebesar 0,000 < 0,05 bahwa terdapat perbedaan yang signifikan antara pendapatan perbulan sebelum menerima bantuan pemerintah dengan pendapatan perbulan setelah menerima bantuan pemerintah. Dari hasil perhitungan uji t dapat dilihat bahwa harga t = |20,586| dengan tingkat signifikansi 0,00. Harga t pada tabel alpha 0,05 (df 301) adalah 1,967Dengan demikian t hitung 20,586 > t tabel 1,967 dapat ditarik kesimpulan bahwabantuan pemerintah berdampak pada pendapatan masyarakat.

The Impact of the Public Expenditure Cuts Policy on the Labor Market in Vietnam

2012 ◽  
pp. 22-46
Author(s):  
Huong Nguyen Thi Lan ◽  
Toan Pham Ngoc
Keyword(s):  
Labor Market ◽  
Computable General Equilibrium ◽  
Impact Evaluation ◽  
Public Expenditure ◽  
Computable General Equilibrium Model ◽  
Living Standard ◽  
Input Output ◽  
Policy Makers ◽  
The Public ◽  
The Impact

The purpose of this study is to evaluate the impact of public expenditure cuts on employment and income to support policies for the development of the labor mar- ket. Impact evaluation is of interest for policy makers as well as researchers. This paper presents a method – that is based on a Computable General Equilibrium model – to analyse the impact of the public expenditure cuts policy on employment and income in industries and occupations in Vietnam using macro data, the Input output table, 2006, 2008 and the 2010 Vietnam Household Living Standard Survey.

Sign in / Sign up

Export Citation Format

Share Document