Lal Ram

Lal Ram
Central Institute of Mining and Fuel Research | CIMFR · DEPARTMENT OF ENVIRONMENTAL MANAGEMENT

PhD

About

81
Publications
26,375
Reads
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2,563
Citations
Citations since 2016
4 Research Items
1872 Citations
20162017201820192020202120220100200300
20162017201820192020202120220100200300
20162017201820192020202120220100200300
20162017201820192020202120220100200300
Additional affiliations
March 1978 - October 2013
Central Institute of Mining and Fuel Research
Position
  • Principal Investigator
January 1978 - December 2013
Central Institute of Mining and Fuel Research
Position
  • Principal Investigator

Publications

Publications (81)
Article
Coal contains abundant microbial genera which include archaebacteria. The study of archaea kingdom in coal mines is a significant tool for knowing the relationship between coal and archaebacteria, the major role in geochemical cycle and application for further coal bio–beneficiation. The present study related to exploration of archaebacteria and th...
Article
Coal contains various organic and inorganic substances including trace quantities of the heavy metals. Therefore, the combustion of coals releases some of the ultimately to the environment of some heavy metals elements in the form of their oxides and in a redistribution of these heavy metals in the surface soil and water bodies, particularly in the...
Article
In India, the major source of energy is thermal power plants that contribute about 70% of the total energy requirement and produce a huge amount of fly ash per year. The fly ash and pond ash collected from the Ramagundam Super Thermal Power Station, India, were mixed with soil at different doses, 50, 100, and 200 t ha−1 separately to compare their...
Article
Re-vegetation of mine spoil enhances carbon storage in both above-ground plant biomass and mine soil. The current study was conducted at the coalmine overburden dumps of Jharia Coalfield (India), with the aim to evaluate the effect of different tree species on the rhizosphere soil properties and to identify key rhizosphere soil indicators that infl...
Article
Coal mining and processing have profound environmental concerns, where large quantities of mine spoil and dust particles are generated. Potentially toxic elements dispersed in the dust and soils in coal mining ecosystem may have adverse health impacts to the nearby inhabitants. Dust and soil samples collected from Jharia coal mining area, India wer...
Article
Success in the remediation of mine spoil depends largely on the selection of appropriate tree species. The impacts of remediation on mine soil quality cannot be sufficiently assessed by individual soil properties. However, combination of soil properties into an integrated soil quality index provides a more holistic status of reclamation potentials...
Conference Paper
Full-text available
Coal plays an important role in meeting the global energy demand including India. In India, the energy extraction is carried out from the combustion of coal in power plants. However, various operations involved in the energy extraction from coal including coal handling and transportation, coal crushing, combustion, ash handling, and effluent water...
Article
Full-text available
Assessment of soil quality is one of the key parameters for evaluation of environmental contamination in the mining ecosystem. To investigate the effect of coal mining on soil quality, opencast and underground mining sites were selected in the Raniganj coalfield area, India. The physical, chemical, and biological parameters of the soils, and trace...
Article
The increasing demand of lignite in the power sector has led to a renewed interest to study the possibilities of spontaneous combustion behavior. Bulk storage of lignite with unknown histories of their proneness to self-ignition phenomena has become a concern in their selection. The present evaluation has been directed to delve into the fundamental...
Article
PAHs and heavy metal chemical fractions were determined in biomass ashes from four power plants that fired coconut, chicken, and wood wastes. All these ashes were alkaline (pH 8.7–12.7). High unburned carbon in the fly ashes (8.3 to 16.9%) indicates incomplete combustion. The major chemical phases were SiO2 – CaO – K2O – MgO followed by Fe2O3 > Al2...
Article
In India, presently 85 existing thermal power plants (TPPs) produce 118 million metric tons of fly ash per year, which is projected to exceed 170 and 440 million metric tons/year by Years 2012 and 2030, respectively. This huge quantity of fly ash not only poses the problems of environmental concerns but occupies large areas of land for its dumping,...
Article
Phosphorus (P) release to surface waters leads to serious pollution. The development of technology for P removal offers the opportunity for abatement of environmental hazards and recycling. Fly ash is widely available and a cheap adsorbent; its alkaline properties make it interesting for precipitation of phosphates. An attempt was made to study the...
Article
Full-text available
Assessment of soil quality is one of the key parameters for evaluation of environmental contamination in the mining ecosystem. To investigate the effect of coal mining on soil quality, opencast and underground mining sites were selected in the Raniganj Coafield area, India. The physical, chemical, biological parameters, heavy metals, and PAHs conte...
Article
Full-text available
People living in coal mine and other coal-based industrial areas are prone to health risk from heavy-metal exposure in dust emissions. Establishing the source of the toxic metals in dusts is important for policies for minimizing their human exposure risks. Dust samples from commercial and residential areas of Jharia coal mining town (India) were co...
Article
Full-text available
Coal-fired thermal power stations (TPSs) may contaminate the surrounding soil and could lead to pollution levels that can affect human health. Soil samples collected from the immediate vicinity of a TPS were analysed for heavy metals. TPS soils were enriched with arsenic (As), strontium (Sr), copper (Cu), mercury (Hg), barium (Ba), vanadium (V), be...
Conference Paper
Full-text available
Energy extractions from coal combustion in power plants are essential for meeting the energy demand of the country. However, the various operations starting from coal crushing, combustion, ash handling, and effluent water handling, etc., are not free from certain environmental hazards. Potentially toxic heavy metals and polycyclic aromatic hydrocar...
Article
The presence of potentially toxic elements in lignite and coal is a matter of global concern during energy extraction from them. Accordingly, Barsingsar lignite from Rajasthan (India), a newly identified and currently exploited commercial source of energy, was evaluated for the presence of these elements and their fate during its combustion. Mobili...
Article
The extractions of coal through opencast mines and power generation from coal combustion in thermal power plants pose the concerns of environment due to huge production of overburden and fly ash, respectively. Considering fly ash as a soil ameliorant and other amendments as fertility supplement, reclamation of mine overburden and lowland in Jharia...
Article
Coal/lignite contains various organic and inorganic substances including trace quantities of radionuclides. The coal releases some natural radioactive elements in the form of their oxides ultimately to the environment during its combustion and redistributes these radioactive elements in the surface soil, which are of human health concern. In view o...
Conference Paper
Energy extractions from coal combustion in power plants are essential for meeting the energy demand of the country. However, the various operations starting from coal crushing, combustion, ash handling, and effluent water handling, etc., are not free from certain environmental hazards. These potential contaminants may be transported to the soils of...
Article
Full-text available
Soils play an important role in carbon cycling. An important approach to terrestrial carbon sequestration is to make use of currently underutilized and waste/degraded lands. The addition of fly ash can ameliorate the adverse conditions of wastelands through a variety of mechanisms, besides helping in stabilization of the soil carbon. Carbon mineral...
Article
Full-text available
Fly ash has increasingly been used as soil amendment. The mobility of the plant nutrient, phosphorus (P), from fly ash into plant roots is limited due to various inherent locking of P in fly ash. Similarly, the phosphatic fertilizer added to acid soils is fixed and is not easily available to plants. The present study is focused on finding some impo...
Article
With coal being the predominant and limited source of energy, extraction of energy from lignite, coal-washery rejects, and agro-wastes through combustion is being attempted globally. During combustion, minerals in the fuels undergo various transformations with corresponding impact on the process. Lignite fly ash, Jamadoba fly ash, and Kalptaru fly...
Article
Full-text available
Globally, fly ash (FA), generated in huge quantities from coal fired power plants is a problematic solid waste. Utilization of FA as an ameliorant for improving soil quality has received a great deal of attention over the past four decades, and many studies have been carried out worldwide. The silt-sized particles, low bulk density (BD), higher wat...
Article
Worldwide, the fly ash, generated in huge quantities from thermal power plants is a menace, especially its handling and disposal. Utilization of fly ash as a soil amendment to improve soil quality has received a great deal of attention. Co-application of biochar with fly ash may further enhance soil quality and crop productivity. Field experiment w...
Article
Soil contamination with arsenic is a widespread phenomenon in many parts of the world and it is well known that it may affect the soil microbial community. A laboratory experiment was performed to evaluate the acute toxicity effect of different As concentrations (0, 0.1, 1.0, 10, 100, and 200 mg/kg) on soil biological parameters like microbial biom...
Article
In India, thermal power plants presently produce 118×106 t of coal ash per annum, which is projected to exceed 440×106 t per annum by 2030. This huge quantity of coal ash not only has tremendous environmental concerns but also occupies large areas of land for its dumping, requiring urgent and appropriate measures for its safe disposal and gainful u...
Article
Biochar is a useful material for carbon storage in soils. In this report, we explored conversion of water hyacinth (Eichornia crassipes) to biochar as a sustainableweed management strategy, as it also has potential for improving soil quality. Eichornia biomass samples were carbonised with limited supply of air in a muffle furnace at varied temperat...
Article
Natural radioactivity depends primarily on the geological and geographical conditions, and appears at different levels in the soils. Coal contains various organic and inorganic substances including trace quantities of the naturally occurring radionuclides, which are of human health concern. The combustion of coals releases natural radioactive eleme...
Article
Besides soil carbon sequestration, thermal conversion of weeds like Parthenium hysterophorus to biochar would be a sustainable weed management strategy. Parthenium was charred at different temperature (200–500 ◦C) and residence time (30–120 min). With increase in temperature, biochar yield decreased, whereas the stability increased. Stable organic...
Article
Full-text available
Jharia (India) a coal mining town has been affected by the consequences of mining and associated activities. Samples of outdoor fallen dust were collected at different locations of Jharia covering four different zones: commercial, petrol pump, high traffic, and residential areas. The dust samples were analysed for different trace elements (As, Cd,...
Article
Full-text available
Damodar river receives huge quantity of effluent discharged from coal industries. The present study consists of analysis of water samples of Damodar river water at coal washery effluent discharge sites in Dhanbad district, such as: Bowrah ghat (3 site), Maura ghat (3 site), Birsa bridge (3 site), Sudamdih (3 site), Bhojudih (3 site) for monitoring...
Article
Full-text available
Coal handling, crushing, washing, and other processes of coal beneficiation liberate coal particulate matter, which would ultimately contaminate the nearby soils. In this study, an attempt was made to determine the status of soil bio-indicators in the surroundings of a coal beneficiation plant, (in relation to a control site). The coal beneficiatio...
Conference Paper
Although coal mining and coal-based industries are among the most important industrial activities in the economic development of India, their environmental and health impacts on surrounding communities are not only the major concerns but also make us answerable to the associated societal cost. A comprehensive health survey was conducted in the prom...
Article
Coal being a limited source of energy, extraction of energy from other sources like lignite, coal-refuse, and biomass is being attempted worldwide. The minerals and inorganic elements present in fuel feeds pose different technological and environmental concerns. Lignite ash, refuse ash, and biomass ash collected from Indian power plants burning lig...
Article
Coal will continue to be the predominant source of global energy for coming several decades. The huge generation of fly ash (FA) from combustion of coal in thermal power plants (TPPs) is apprehended to pose the concerns of its disposal and utilization. FA application based on its typical characteristics as soil ameliorant for agriculture and forest...
Article
Full-text available
There are many sources trough which the soil get enriched and contaminated with REEs. The determination of REEs in environmental samples has been limited because of the lack of sensitive analytical techniques. Soil samples were collected from four sites including open cast coal mine, natural coal burning, coal washery and control in the coal field...
Article
Full-text available
The entire coal beneficiation process, starting from unloading the raw coal to the loading of processed coal, liberates particulate matter, which would ultimately settle on the soil at varying distances. This is likely to affect soil quality and possibly the health of the inhabitants. Soil samples collected from the sites of two coal beneficiation...
Article
Full-text available
Coal from its excavation, processing, and utilization creates environmental problems and health hazards. In these processes, the mobilization of potential organic and heavy metal contaminants affects the quality of soil and health of the inhabitants. Soil samples were collected from the nearby areas of an opencast coal mine (OCM) and a coal fire af...
Article
Full-text available
Disposal of sewage sludge (SS) and fly ash (FA) is a multifaceted problem, which can affect environmental quality. FA has the potential to stabilize SS by reducing metal availability and making the SS suitable for application in the agricultural sector. An experiment was performed to evaluate soil biological quality changes with the combined amendm...
Article
Full-text available
Though heavy metals can stimulate the activity of soil enzymes in smaller amounts, yet act as inhibitors, if present in high concen-trations. Natural and anthropogenic heavy metal contamination and its disturbances on soils can be evaluated by using enzymatic activities as sensors. To study the effects of Cd, soil added with known Cd concentrations...
Article
Reclamation of a vast area of wasteland available in India is a challenge for making it suitable for agriculture and forestry purposes through application of appropriate technology for its fast growing population. Huge amount of fly ash is being generated from combustion of coal in 85 existing thermal power plants, which contributes to 70% of the t...
Conference Paper
Coal from its excavation, processing, and utilization creates environmental problems and health hazards. Mine fire is unintentional burning of coal in its seams of abandoned coal mines or coal mines in use. Mine fire has got its implications on environmental pollution, resource depletion, and societal safety, as it releases volumes of polluted air...
Article
Increasing demand for water in domestic, agricultural, and industrial sectors necessitates exploitation of water either in the form of groundwater or from natural resources. To safeguard the long-term sustainability of water resources and their utilization, the quality of water has to be periodically monitored and determined for various characteris...
Article
Full-text available
Coal is one of the most abundant and important energy resources of the world. It plays crucial role in defining the economy of a nation. After mining, coal has to be processed to remove the impurities in the form of mineral matter. A large volume of impurities such as tailing and solid wastes are discarded during beneficiation of coal in coal benef...
Article
Fly ash, a solid waste being generated during power generation in thermal power plants, contains most of the plant nutrients in sufficient quantities, which holds great promise for its bulk use in agriculture as a soil conditioner for reclamation of acidic soil and as a source of plant nutrients for the deficient soils. The beneficial inherent prop...
Article
The generation of huge quantities of mine spoil (approx. 800 million tons/annum), consisting shale, coaly matter, stones, etc. in the ratio (around 1:6: coal: mine spoil) from open cast coal mining, is a serious environmental concern. Similar is the problem with the generation of gargantuan quantity of fly ash (118 million tons/annum) from 85 therm...
Article
In India, presently 85 existing thermal power plants (TPPs), contributing to about 70% of the total energy requirement, produce 118 million tons of fly ash per year. This huge quantity of fly ash not only poses serious problems of environmental concerns but occupies large areas of land for its dumping and needs urgent and appropriate measures for i...
Article
Full-text available
Growing dependence on coal-fired power plants for electrical generation in many countries presents ongoing environmental challenges. Burning pulverized coal in thermal power plants (TPPs) generates large amounts of fly ash (FA) that must be disposed of or otherwise handled, in an environmentally-sound manner. A possible option for dealing with fly...
Article
Biodepolymerization of some of the lower rank Indian coals by Pleurotus djamor, Pleurotus citrinopileatus and Aspergillus species were studied in a batch system. The main disadvantage in burning low rank coals is the low calorific values. To get the maximum benefit from the low rank coals, the non fuel uses of coals needs to be explored. The liquef...
Article
Microbial characterization of the tree rhizosphere provides important information relating to the screening of tree species for re-vegetation of degraded land. Rhizosphere soil samples collected from a few predominant tree species growing in the coal mining ecosystem of Dhanbad, India, were analyzed for soil organic carbon (SOC), mineralizable N, m...
Article
The native riparian herbs such as Leonotis nepetaefolia (L.) R. Br., Cassia tora L., Ageratum conyzoides L., Parthenium hysterophorus L. and Sida acuta burm f., dominant on the bank of River Damodar in Eastern Jharia Area, Dhanbad (India), were selected to assess experimentally their quantitative role in conserving the soil and reducing water runof...
Article
In view of huge generation of fly ash (118 million tons/annum) from 85 thermal power plants (TPPs) in the country and its insufficient utilization (up to 48%), there is crucial need for the development of an eco-friendly technology capable of utilizing it on bulk scale on sustainable basis. Keeping in view fly ash as a useful ameliorant that may im...
Article
Full-text available
In India, a significant area of land is occupied by preexisting coal-fired thermal power plants (TPPs) for the storage of fly ash slurry in ash ponds. However, the area available for storage of fly ash at these TPPs is limited. In addition, this type of fly ash disposal poses a problem due to restricted land availability and potential contamination...
Article
Enormous quantity of water is used for coal beneficiation and accordingly huge amount of effluents are being generated. In this study an attempt was made to evaluate the potential of this effluent water for irrigation. Water samples were collected from three different points (a) feeding point, (b) thickening point, and (c) outlet point of coal wash...
Article
Full-text available
Lignite fly ash (LFA), being alkaline and endowed with excellent pozzolanic properties, a silt loam texture, and plant nutrients, has the potential to improve soil quality and productivity. Long-term field trials with groundnut, maize, and sun hemp were carried out to study the effect of LFA on growth and yield. Before crop I was sown, LFA was appl...
Article
Fly ash is abundantly produced from thermal power plants and is considered a hazardous waste. However, in recent years, fly ash has been widely utilized in the agricultural sector as a soil modifier. It is particularly important for wasteland/mine spoil reclamation due to its ability to provide a source of plant nutrients and improve physicochemica...
Article
Full-text available
The maximum concentration of the majority of the trace metals in the leachates from shake and column test of lignite fly ash (LFA) was within the prescribed limits; however, total dissolved solids, total hardness, cations and anions (except K+), being above the prescribed limits, may lead to the increase in the hardness and salinity in the soil on...
Article
The present study consist of collection of water samples from different process levels of coal washery, namely feeding, thickening, outlet points and of the Damodar river for evaluation of their quality. The following parameters, like pH, EC, colour, total solids, volatile solids, hardness, chlorides, DO, BOD, COD, total nitrogen, active phosphorou...
Article
Long-term field trials using lignite fly ash (LFA) were carried out in rice crops during the period 1996-2000 at Mine I, Neyveli Lignite Corporation, Tamil Nadu. LFA, being alkaline and endowed with an excellent pozzolanic nature, silt loam texture, and plant nutrients, has the potential to improve the texture, fertility, and crop productivity of m...
Article
The generation of huge quantities of mine spoil comprising unwanted shaly matter, stones, etc. in the ratio (1:4, coal: mine spoil) produced from open cast coal mining contributing about 70% of total coal extraction is a big challenge for environmental managers apart from utilization of huge amount of fly ash (110 million tones/annum) being generat...