scholarly journals Impact of Brick Kilns’ Emission on Soil Quality of Agriculture Fields in the Vicinity of Selected Bhaktapur Area of Nepal

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Gunjan Bisht ◽  
Sanjila Neupane
Keyword(s):  
Heavy Metal ◽  
Soil Quality ◽  
Heavy Metal Contamination ◽  
Nutrient Content ◽  
Physical Parameters ◽  
Organic Carbon Content ◽  
Brick Kiln ◽  
Entire Study ◽  
Brick Kilns

The study was conducted to evaluate soil quality and impact of brick kiln on different physicochemical parameters of soils of agricultural field, located in the vicinity of Bhaktapur, Nepal. The study was carried out by determining the physicochemical characteristics of soil, soil fertility, and heavy metal contamination of soil. During the entire study period, water absorptivity of soil ranged from 2.4 to 3.3 mg/L, pH varies from 5.885 to 7.64, and organic carbon content and organic matter varied from 0.277 to 0.93%, from 0.477% to 1.603%, respectively. Nutrient content, that is, sulfate and nitrate concentration, in the soil ranged from 0.829 to 3.764 mol/L and from 0.984 to 29.99 mol/L, respectively. The findings revealed that concentrations of heavy metals (chromium and lead) were within permissible limit, although the levels were higher in soil at 50 m and decrease farther from brick kiln. However, the physical parameters and nutrient content were deficient in soil at 50 m while increasing gradually at distances of 100 m and 150 m. The variation of result obtained for physical parameters supports the fact that quality of soil in terms of heavy metal content and nutrient content was directly proportional to the distance from the kiln; that is, the quality of soil increased with increasing distance.

scholarly journals Impact of brick kilns' emission on soil quality of agriculture fields in the vicinity of selected Bhaktapur area

2018 ◽  
Vol 5 ◽  
pp. 34-42
Author(s):  
Gajendra Bhakta Suwal
Keyword(s):  
Ph Value ◽  
Nutrient Content ◽  
Agricultural Field ◽  
Entire Study Period ◽  
Brick Kiln ◽  
Entire Study ◽  
Physiochemical Parameters ◽  
Brick Kilns ◽  
The Impact

The study was conducted to evaluate the impact of brick kilns' on different physiochemical parameters of soils of agricultural field, located in the vicinity of Bhaktapur. The study was carried out by measuring the pH value and the micro nutrients of the soil. During the entire study period, the pH of soil near brick kiln was measured to be 5.5 and as distance increased the pH of soil was recorded up to 6.9 which mean the soil was acidic near the kiln and was neutral farther away. The findings revealed that the pH value was high and nutrient content were deficient in soil at 50 m while increasing gradually at distances of 100 m and 150 m it was found opposite of it. It signifies that the quality of soil increases proportionally to the distance from the brick kiln area. Similarly, the micro nutrients like organic matter are also increased with increasing distance.

scholarly journals Sustainable Amelioration of Heavy Metals in Soil Ecosystem: Existing Developments to Emerging Trends

Minerals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 85
Author(s):  
Garima Awasthi ◽  
Varad Nagar ◽  
Saglara Mandzhieva ◽  
Tatiana Minkina ◽  
Mahipal Singh Sankhla ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Soil Quality ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Root Zone ◽  
Popular Method ◽  
Modern Period ◽  
Emerging Trends

The consequences of heavy metal contamination are progressively degrading soil quality in this modern period of industry. Due to this reason, improvement of the soil quality is necessary. Remediation is a method of removing pollutants from the root zone of plants in order to minimize stress and increase yield of plants grown in it. The use of plants to remove toxins from the soil, such as heavy metals, trace elements, organic chemicals, and radioactive substances, is referred to as bioremediation. Biochar and fly ash techniques are also studied for effectiveness in improving the quality of contaminated soil. This review compiles amelioration technologies and how they are used in the field. It also explains how nanoparticles are becoming a popular method of desalination, as well as how they can be employed in heavy metal phytoremediation.

scholarly journals The role of sulphate-reducing bacteria in mercury-contaminated estuarine sediments : a case study of Durban Bay

2003 ◽  
Author(s):  
◽  
Elizabeth Anne Simpson
Keyword(s):  
Heavy Metal ◽  
Methyl Mercury ◽  
Heavy Metal Contamination ◽  
Desulfovibrio Desulfuricans ◽  
Estuarine Sediments ◽  
Physical Parameters ◽  
Sulfate Reducing ◽  
Initial Survey ◽  
Reducing Bacteria

Stimulated by the findings of international researchers, that the sulfate-reducing microorganism Desulfovibrio desulfuricans could be incriminated in the process of mercury bio-methylation, it was decided to test this hypothesis on sediments from selected areas of Durban Bay where elevated levels of the bio-hazardous heavy metal had previously been detected. The Environmentek Division of the Council for Scientific and Industrial Research (Durban) is involved in an ongoing chemical assessment of heavy metal contamination (including levels of mercury) in the sediments of this estuary, but nothing is currently understood about the form in which mercury exists or the biological processes that could be determining its fate. The purpose of this project was to attempt to answer some of these questions. The study involved attempting to isolate, identify and quantify microorganisms of the species Desulfovibrio desulfuricans, Escherichia coli and Clostridium perfringens in one hundred and eighty sediment samples taken from three designated sites in the bay. Each sample was additionally analysed for total and methyl mercury and sulfate content, as well as a number of physical parameters. Based on the outcome of the initial survey, it was envisaged that further laboratory experimentation would be conducted to determine whether or not isolates were responsible for the production of the highly toxic organic mercury and whether this process was occurring in situ in the sediments. The findings of this project were contrary to what had been expected. Total mercury concentrations (apart from one instance) did not appear to be appreciably elevated in the areas under study. Similarly, the levels of methyl mercury were fourrd to be either diminished or absent. Numbers of D. desulfuricans were low and not uniformly distributed throughout the sediments. Cl. perfringens was more in evidence, but counts were not perceptibly increased. Sulfate levels were consistently high, indicating significantly impaired rates of sulfate reduction. Difficulty experienced in sub-culturing

Heavy Metal Potential of Domestic Biological Wastewater Treatment Plant Sludge

2021 ◽  
Vol 4 (1) ◽  
pp. 90-113
Author(s):  
T.D.C. Pushpakumara ◽  
◽  
W.G.T. Sandakelum ◽  
Keyword(s):  
Heavy Metal ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Metal Content ◽  
Treatment Plant ◽  
Nutrient Content ◽  
Heavy Metal Content ◽  
Treatment Processes ◽  
Secondary Sludge

The use of sludge as fertilizers helps to the recycling of nutrients to the environment due to its beginning from wastewater and therefore relatively high content of nutrients and organic matter. However, wastewater does also contain hazardous compounds like heavy metals and micro pollutants which eventually are separated to the sludge during the treatment processes at the wastewater treatment plant. In order to improve the sludge quality, source tracking is a relatively cheap and effective way to find and eliminate hazardous compounds and prevent them from ending up in the sludge. The aim with this thesis was to investigate the fertilizer potential in sludge from wastewater treatment plant. The sludge is analyzed in terms of nutrient and heavy metal contents as well as physiochemical parameters. In order to determine the potential as fertilizer, the quality of the sludge is compared with other fertilizer alternatives, other sludge types and regulations for sludge use in agriculture. The work with sludge quality improvements in Gaborone is also investigated. Sludge from different stages along the treatment processes were collected in order to see differences in quality related to the treatment. The results shows that the samples of primary an aerobically treated sludge tend to have higher heavy metal content than the secondary sludge. The quality of the dry sludge samples indicates lower nutrient content than both the primary and secondary sludge, but similar heavy metal content. The analysis of dry sludge from indicates a low nutrient value and high heavy metal content in comparison to other selected fertilizer options and sludge from other. The processes for removal of nutrients from the wastewater are an important factor for the nutrient content in the sludge. Keywords wastewater; fertilizers; nutrients; sludge treatment

Effect of Steel Slag to Improve Soil Quality of Tsunami-Impacted Land while Reducing the Risk of Heavy Metal Bioaccumulation

2017 ◽  
Vol 229 (1) ◽  
Author(s):  
Marco Antonio León-Romero ◽  
Paula Cecilia Soto-Ríos ◽  
Munehiro Nomura ◽  
Osamu Nishimura
Keyword(s):  
Heavy Metal ◽  
Soil Quality ◽  
Steel Slag ◽  
Metal Bioaccumulation ◽  
Heavy Metal Bioaccumulation

Primary Investigation and Analysis of Arsenic Contamination in Soil-Plant of Tin Mine in Gejiu

2012 ◽  
Vol 518-523 ◽  
pp. 444-452 ◽  
Author(s):  
Jing Wang ◽  
Wei Xuan Fang
Keyword(s):  
Heavy Metal ◽  
Metal Contamination ◽  
Yunnan Province ◽  
Heavy Metal Contamination ◽  
Mining Area ◽  
Primary Study ◽  
Distribution Characteristics ◽  
Edible Parts ◽  
Remediation Of Soil

According to the primary study on the As contamination in soil and crops including potato and pea in tin tailings in Gejiu area, Yunnan Province, it has been found that concentrations of As in rhizosphere far exceed Chinese National Grade Ⅲ standard of soil environmental quality of China (GB 15618-1995). It also has been found that the Ferns were living in the tin tailings suffered from the contamination of heavy metals. Compared with the limit of national criteria for food sanitation in China, the concentrations of As in edible parts of ferns are 90 times. Therefore, the remediation of soil based on geochemical distribution characteristics of heavy metal in the tailings is demanded. And avoiding crops-planting in the tailings to reduce the diffusion of heavy metal contamination in food chain of mining area is necessary.

scholarly journals Assessment of the soil quality of Haridwar Uttarakhand India: A comparative study

2020 ◽  
Vol 21 (3) ◽  
pp. 155-164
Author(s):  
Sweta Bhardwaj ◽  
D.R. Khanna ◽  
Mukesh Ruhela ◽  
Rakesh Bhutiani ◽  
Rahul Bhardwaj ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Soil Quality ◽  
Negative Impact ◽  
Industrial Area ◽  
Control Site ◽  
Soil Parameters ◽  
Industrial Solid Waste ◽  
Accumulation Of Pollutants ◽  
Agricultural Areas

The present study aims to compare the quality of soil of different region of Haridwar with reference to physicochemical and heavy metal parameters. To fulfill the objectives of present study, soil sampling was performed in forest (control site), industrial, residential and agricultural areas in and around Haridwar. Soil samples were analyzed for different physicochemical and heavy metal parameters.  Values of all the studied soil parameters were found highest (an increase of 32% in temperature (16.63 to 21.640C), 121% in soil moisture (13.05 to 28.39%), 29.02% in soil porosity (37.56 to 49.03%), and 19.6% in the water holding capacity (36.22 to 43.58%), 74.18% in conductivity (0.25 to 0.40 µMhos/cm), and 203.78% in chloride (16.67 to 53.97mg/gm)) at the industrial area in comparison to other sites. During the course of the study, an increasing trend in all the parameters at all the sites was observed this may be due to the dumping of industrial solid waste and effluent. Although no negative impact was observed on the soil quality but continuous dumping will results in harmful impacts due to the accumulation of pollutants. Therefore there is a need for safe and proper disposal and utilization techniques to manage the enormous quantity of industrial waste. All the heavy metals (such as copper (0.050 to 0.055mg/gm), manganese (0.232 to 0.242mg/gm), nickel (0.035 to 0.036mg/gm), lead (0.039mg/gm), and iron (1.19 to 1.22) were found in higher concentration during the study period while cadmium was found absent during the study period.

scholarly journals Microbiological Indices for Diagnosis of Heavy Metal Contaminated Soils

2021 ◽  
Author(s):  
Sukirtee Chejara ◽  
Paras Kamboj ◽  
Y. V. Singh ◽  
Vikas Tandon
Keyword(s):  
Heavy Metal ◽  
Contaminated Soils ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Heavy Metal Stress ◽  
Environmental Indicators ◽  
Research Gap ◽  
Microbial Indices

Heavy metal contamination has gained popularity worldwide due to their persistent nature in the environment, on the top of that non-biodegradable nature makes its accumulation easy to toxic levels. Understanding the nature of contamination has become a major concern before heavy metals deteriorate the quality of soil; to diagnose heavy metal pollution suitable indices are required. Microbial indices gaining importance because of their sensitive nature towards change in surrounding, which is the imperative quality required to select microbes as environmental indicators. Albeit enough literature is present related to this topic but the information is scattered so role of this chapter is imperative. The chapter will be helpful for the reader to provide a thorough understanding of merits and demerits of microbiological indices for heavy metal contaminated and restituted soils. The changes in microbiological indices and their mechanism of response towards heavy metal stress are effectively summarized. Research gap and future needs of microbial diagnosis of heavy metal contaminated soils are discussed.

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