Environmental concerns of underground coal gasification

Imran, Muhammad; Kumar, Dileep; Kumar, Naresh; Qayyum, Abdul; Saeed, Ahmed Farhan; Bhatti, Muhammad Shamim

doi:10.1016/j.rser.2013.12.024

Cited by 83 publications

(47 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1) (Ali et al 2015) in the south eastern part of Sindh, on the stable western margin of the Indian Plate. The study area has a tropical desert climate (Imran et al 2014). The temperatures during summer remain between 24 and 48°C, while in winter, the temperatures range in between 9 and 28°C, and rainfall varies from year to year but average annual rainfall are 200 to 300 mm.…”

Section: Description Of Study Areamentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of the fate of arsenic-contaminated groundwater at different aquifers of Thar coalfield Pakistan

Ali

Kazi

Baig

et al. 2015

Environ Sci Pollut Res

View full text Add to dashboard Cite

In present study, the ground water at different aquifers was evaluated for physicochemical parameters, iron, total arsenic, total inorganic arsenic and arsenic species (arsenite and arsenate). The samples of groundwater were collected at different depths, first aquifer (AQ1) 50-60 m, second aquifer (AQ2) 100-120 m, and third aquifer (AQ3) 200-250 m of Thar coalfield, Pakistan. Total inorganic arsenic was determined by solid phase extraction using titanium dioxide as an adsorbent. The arsenite was determined by cloud point extraction using ammonium pyrrolidinedithiocarbamate as a chelating reagent, and resulted complex was extracted by Triton X-114. The resulted data of groundwater were reported in terms of basic statistical parameters, principal component, and cluster analysis. The resulted data indicated that physicochemical parameters of groundwater of different aquifers were exceeded the World Health Organization provisional guideline for drinking water except pH and SO4(2-). The positive correlation was observed between arsenic species and physicochemical parameters of groundwater except F(-) and K(+), which might be caused by geochemical minerals. Results of cluster analysis indicated that groundwater samples of AQ1 was highly contaminated with arsenic species as compared to AQ2 and AQ3 (p > 0.05).

show abstract

Section: Description Of Study Areamentioning

confidence: 99%

“…Nowadays, several national and international agencies are working on different projects in Thar coalfield (Ali et al 2015;Imran et al 2014). The discharge of pollutants from surface mining operations generally occurs during or immediately following periods of excessive precipitation (Tripathy 2002).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the fate of arsenic-contaminated groundwater at different aquifers of Thar coalfield Pakistan

Ali

Kazi

Baig

et al. 2015

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…With grace of Almighty Allah, Pakistan has the largest natural lignite coal depositions in district Tharparkar, Sindh, Pakistan (Imran et al, 2014;Khurshid et al, 2013;Rafique et al, 2008;Tahir and Rauf, 2006). However, coal is one of the most important energy resource in developing countries (Liu, 2000).…”

Section: Introductionmentioning

confidence: 99%

Monitoring of arsenic fate with proximate parameters and elemental composition of coal from Thar coalfield, Pakistan

Ali

Kazi

Baig

et al. 2015

Journal of Geochemical Exploration

View full text Add to dashboard Cite

“…In addition, the spalling of overburden strata and unbalance hydrostatic pressure in the surrounding area of the UCG cavities could also create paths for the aquifer water to flow into the cavities, mix with the residual chemicals produced in UCG process, and consequently contaminate the upper aquifers. An example is the detection of benzene in ground water in Kingaroy project in Queensland which directly caused the project to be blocked in July of 2010 (Imran et al, 2014).…”

Section: Geomechanical and Environmental Modellingmentioning

confidence: 99%

Recent development on underground coal gasification and subsequent CO 2 storage

Yang

Koukouzas

Green³

et al. 2016

Journal of the Energy Institute

View full text Add to dashboard Cite

Underground coal gasification (UCG) is the in-situ conversion of deep underground coal to synthesis gas for heating, chemical manufacturing and power generation. UCG has been the subject of extensive pilot testing but technical and environmental concerns remain, not least its greenhouse gas emissions. An attractive solution is to combine UCG with CO 2 capture and storage (CCS) so that the CO 2 generated from the UCG and combustion of synthesis gas is re-injected back underground in the UCG cavities, adjacent unmineable coal seams and stressed strata. Thereby the emissions from UCG are eliminated and deep coal reserves become a new source of energy supply. This paper reviews the recent global development of UCG projects, the research progress of UCG technology and the technical developments and economic feasibility of UCG-CCS in recent EU projects.

show abstract

Environmental concerns of underground coal gasification

Cited by 83 publications

References 4 publications

Evaluation of the fate of arsenic-contaminated groundwater at different aquifers of Thar coalfield Pakistan

Evaluation of the fate of arsenic-contaminated groundwater at different aquifers of Thar coalfield Pakistan

Monitoring of arsenic fate with proximate parameters and elemental composition of coal from Thar coalfield, Pakistan

Recent development on underground coal gasification and subsequent CO 2 storage

Contact Info

Product

Resources

About