Progress in Chemical and Biochemical Research

Contamination and Ecological Risk Assessment of Heavy Metals in Different Land Use Urban Soils of Kathmandu District, Nepal

Kereena R Niroula; Mahesh R Shrestha; Bijaya R Adhikary; Sudarshana Shakya; Bhushan Shakya; Achut Ram Pradhananga; Bindra Devi Shakya; Dipesh Raj Pant; Pawan Raj Shakya

Volume 5, Issue 3 , September 2022, , Pages 262-282

https://doi.org/10.22034/pcbr.2022.351156.1229

Abstract

Ever-increasing population, rapid urbanization, and industrialization have critically deteriorated the urban soil quality. This study was conducted to assess the ecological risk of ... Read More Ever-increasing population, rapid urbanization, and industrialization have critically deteriorated the urban soil quality. This study was conducted to assess the ecological risk of cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), and lead (Pb) in four different land-use urban soils viz, commercial area (CA), heavy traffic ring roadside (HT), residential area (RA), and agricultural farm (AF) of Kathmandu District, Nepal. For this purpose, concentrations of the five heavy metals (HMs) were determined by using a flame atomic absorption spectrophotometer (FAAS), in a total of 31 soil samples collected from all four land uses. Pollution indices such as contamination factor (CF), degree of contamination (CD), pollution load index (PLI), geo-accumulation index (I-geo), ecological risk factor (ER), and potential ecological risk (PER) were used to assess the ecological risk posed by the HMs. The overall mean concentrations for Cd, Cr, Cu, Ni, and Pb were 0.98, 137.1, 79.80, 100.00, and 72.3 mg/kg, respectively, and were found 2-4 times greater than the background values. The statistical analysis revealed a poor correlation of the HMs against pH and total organic carbon (TOC) suggesting little influence on HMs contamination. Results also showed the highest concentrations of the HMs in HT soils among the land use types. Ecological risk assessment revealed CF (0.42-5.06) and CD (7.83-15.72) values as indicators for low to considerable, and moderate to considerable risks respectively, in soils of all land uses under the present investigation. Whereas the PLI values (1.12-2.96) corresponded to the polluted urban soils, the Igeo values (0.08-1.02) indicated an unpolluted to the moderately polluted class of soil contamination in all the land-uses. Likewise, the ER (0.91- 114.90) and PER (113.97-170.14) values pointed out that all the land use urban soils were exposed to a class of low to considerable, and moderate to considerable risks, respectively. Among the HMs, Cd, and Pb posed a comparatively high ecological risk for soils of all land uses and the estimated indices indicated HT as the most vulnerable land use suggesting immediate control measures.

Thermodynamic and kinetic Study of Adsorption of Cobalt II Using Adsorbent of Magnesium Oxide Nano-Particles Deposited on Chitosan

Bijan Ghanavati; Alireza Bozorgian; Hamid Kazemi Esfeh

Volume 5, Issue 2 , May 2022, , Pages 165-181

https://doi.org/10.22034/pcbr.2022.335475.1219

Abstract

The present study is on MgO nanoparticles deposited on chitosan, which is investigated for the removal of the heavy metal cobalt II using an atomic absorption spectrometer at various ... Read More

Removal of Copper II from Industrial Effluent with Beta Zeolite Nanocrystals

Bijan Ghanavati; Alireza Bozorgian

Volume 5, Issue 1 , February 2022, , Pages 53-67

https://doi.org/10.22034/pcbr.2022.328704.1213

Abstract

Heavy metals, including copper, are one of the most toxic pollutants in the world today due to the consumption prevalence in industry. There are several ways to remove copper ... Read More

Adsorption process for reducing heavy metals in Textile Industrial Effluent with low cost adsorbents

Tanmayee Panigrahi; A.U. Santhoskumar

Volume 3, Issue 2 , May 2020, , Pages 135-139

https://doi.org/10.33945/SAMI/PCBR.2020.2.7

Abstract

Heavy metals such as Lead (Pb), Chromium (Cr), Cadmium (Cd) , Copper (Cu), Zinc(Zn), Arsenic(As),Iron (Fe), Mercury (Hg), Magnesium (Mg) and Sulphur (S) are widely used for production ... Read More

Heavy Metals Contents in Some Commercially available Coffee, Tea, and Cocoa Samples in Misurata City – Libya

Abdulfattah Alkherraz; Omar Hashad; Khaled Elsherif

Volume 2, Issue 3 , August 2019, , Pages 99-107

https://doi.org/10.33945/SAMI/PCBR.2019.2.3

Abstract

The purpose of the present study was to evaluate the concentrations of Mn, Cr, Fe, Cu, Zn, Pb, and Cd in 18 types of commercially available coffee, tea, and cocoa on Misurata city markets. ... Read More

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Keywords = Heavy metals

Contamination and Ecological Risk Assessment of Heavy Metals in Different Land Use Urban Soils of Kathmandu District, Nepal

Abstract

Thermodynamic and kinetic Study of Adsorption of Cobalt II Using Adsorbent of Magnesium Oxide Nano-Particles Deposited on Chitosan

Abstract

Removal of Copper II from Industrial Effluent with Beta Zeolite Nanocrystals

Abstract

Adsorption process for reducing heavy metals in Textile Industrial Effluent with low cost adsorbents

Abstract

Heavy Metals Contents in Some Commercially available Coffee, Tea, and Cocoa Samples in Misurata City – Libya

Abstract