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Research Article
Metal Accumulation in Carrots, Soil and Irrigating Water Samples
Issue:
Volume 9, Issue 3, September 2025
Pages:
98-102
Received:
31 March 2025
Accepted:
19 June 2025
Published:
26 June 2025
Abstract: Carrots have an important role for a life of the men. Everybody can use carrots in the meals or he drinks, he uses carrots such as the medicaments to cure many diseases, too. Carrots are very necessaries, we can tell the following effects: carrots help improve eyesight, especially, carrots contain vitamin A, essential nutrients for health of the eyes. When our bodies have the vitamin A deficiency in the long time, visual cells in the eye retina can been hurt, make dry eyes, the visual disturbances and it is serious that everyone does not see. Carrots support to cure the diabetes; help the strengthen immunity; improve the health cardiovascular; help beautiful healthy skin; can reduce the risk of cancer. Besides; everyone drinks carrot juice to stimulate hair growth and stabilize blood pressure. Carrots contain a lot of beta carotene, fiber, vitamin K1, potassium as well as antioxidants and was grown popular in all regions of Vietnam. The cultivating soil, irrigating water and carrot samples were collected in Loc Thanh village, Bao Lam district, Lam Dong province and analyzed some indicators. The results showed that the soil sample was poor in nutrient by N, P, K indicators were lower than the standards; but pH, Al3+ and Fe+ were higher than the standards. The water sample did not contain the toxic heavy metals such as: As, Pb, Cd; but the indicators of Cu, Zn, Fe were higher than the standards. For the carrot sample, the indicators of As, Pb, Cu, Zn exceeded the allowable threshold; the contents of lipid and protein were lower than the standards but NO3- was within allowable standards. However, analysis of carrot samples grown by us using organic methods showed that some heavy metal indicators such as: As, Pb, Cu were lower than allowable standards. This showed that it is necessary to choose the type of soil, water and organic method for growing carrots in order to harvest good quality carrots and safety for users. We studied an environment of soil, water and analyzed the carrots to find a nutrition level, nutritional value and the metal accumulation in order to improve a life of men.
Abstract: Carrots have an important role for a life of the men. Everybody can use carrots in the meals or he drinks, he uses carrots such as the medicaments to cure many diseases, too. Carrots are very necessaries, we can tell the following effects: carrots help improve eyesight, especially, carrots contain vitamin A, essential nutrients for health of the ey...
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Research Article
Investigation of Petroleum Exploration Pollution on Soil Fertility Around Yorla Flow Station in Kpean, Khana Local Government Area of Rivers State, Nigeria
Lesor Ikeh*
,
Odunna Evans Chibuzor
Issue:
Volume 9, Issue 3, September 2025
Pages:
103-114
Received:
21 May 2025
Accepted:
11 June 2025
Published:
30 June 2025
Abstract: Spill sites, the proximity of workshops and flow stations to various ecosystems, coupled with the improper handling and disposal of waste oil, and has led to the inadvertent release of petroleum hydrocarbons into the surrounding soil. This contamination poses a significant environmental challenge as it has the potential to disrupt soil fertility dynamics, including nutrient availability, microbial activity, and overall ecosystem health. The aim of this work is to ascertain the effect of petroleum level (waste oil) on soil fertility using YORLA OIL LOCATIONS in Kpean, Khana Local Government Area of Rivers State as a case study. Two sites, Yorla Location-1, YL-LC 1 and Yorla Location-2, YL-LC 2 were assessed by collecting soil samples from different points at depths of 0.10m and 0.25m respectively and analyzed for Ammonium, Nitrate, Sulphate, and Soil Carbonate. However, experimental results shows varying values of each parameter as compared to the control sample taken 100m away from spill site. Highest TPH values for site YL-LC 1 (6232 mg/kg) and YL-LC 2 (6648 mg/kg) clearly overshoots the EGASPIN standards. Nitrate and Ammonium levels were significantly lower at all contaminated points compared to the control, indicating a consistent disruption of nitrogen cycling. Consequently, YL-LC 1 displayed elevated iron levels, indicative of potential anaerobic conditions caused by pollution, while YL-LC 2 exhibited varying manganese levels and site-specific fluctuations in potassium and calcium. This implies that the soil health has been tampered with as a result of the oil spill and remediation must be done to restore the soil to its origin state.
Abstract: Spill sites, the proximity of workshops and flow stations to various ecosystems, coupled with the improper handling and disposal of waste oil, and has led to the inadvertent release of petroleum hydrocarbons into the surrounding soil. This contamination poses a significant environmental challenge as it has the potential to disrupt soil fertility dy...
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Research Article
Identifying the Value Chain of Different Types of Recyclable Waste Plastics: Case Study on Selected SMEs of Dhaka City
Issue:
Volume 9, Issue 3, September 2025
Pages:
115-124
Received:
6 June 2025
Accepted:
18 June 2025
Published:
6 July 2025
DOI:
10.11648/j.ajese.20250903.13
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Views:
Abstract: This study investigates the role of small and medium enterprises (SMEs) in the plastic waste recycling value chain in Dhaka, Bangladesh. The research focuses on identifying the value chain of different types of recyclable waste plastics and assessing the pattern of post-consumer plastic waste disposal, recycling practices, and the prospects and challenges faced by SMEs. Dhaka City Corporation, comprising Dhaka North City Corporation (DNCC) and Dhaka South City Corporation (DSCC), generates an estimated 6,400 tons of waste daily, of which approximately 640 tons are plastic waste. Among this, around 37% is recycled, with SMEs playing a central role in collection, sorting, and processing activities. Data were collected through surveys and field visits to 617 recycling units across the city. The study analyzed the economic dynamics of different plastic types, revealing that polyethylene terephthalate (PET) and high-density polyethylene (HDPE) offer the highest procurement and resale values. PET is procured at Tk. 35.71 per kg and resold at Tk. 48.00 per kg, while HDPE provides the highest net margin of Tk. 9.08 per kg. Value addition across various plastic types ranges from 15% to 55%. The plastic waste stream primarily consists of low-density polyethylene (LDPE) from single-use plastic bags (about 40%) and multi-layered plastics (MLP) (around 7%). The findings indicate that the sector is largely informal and fragmented, with most recycling units operating from small rented spaces without formal documentation, licenses, or access to institutional finance. Occupational safety measures, environmental compliance, and technological integration are minimal, with most facilities lacking personal protective equipment and effluent treatment systems. The spatial distribution of units is unplanned, and a significant portion of factories report financial instability. Despite these challenges, SMEs contribute significantly to resource recovery, employment, and environmental management in Dhaka. The study highlights the structure of the plastic recycling value chain and the operational realities of SMEs in this sector.
Abstract: This study investigates the role of small and medium enterprises (SMEs) in the plastic waste recycling value chain in Dhaka, Bangladesh. The research focuses on identifying the value chain of different types of recyclable waste plastics and assessing the pattern of post-consumer plastic waste disposal, recycling practices, and the prospects and cha...
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Research Article
Impact of Mining Activities on Iju River in Ado-Odo Otta Local Government Area Ogun State Southwest Nigeria
Adekitan Adetoun Abimbola*,
Olagoke Victoria Oluwadamilola,
Olabayo Joel Oluwasegun
Issue:
Volume 9, Issue 3, September 2025
Pages:
125-130
Received:
21 March 2025
Accepted:
28 March 2025
Published:
7 July 2025
DOI:
10.11648/j.ajese.20250903.14
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Views:
Abstract: Environmental degradation occurs as a result of mining activities and can lead to deterioration of water quality. From this study, water samples were collected from upstream, midstream, and downstream locations along Iju river in Ado-Odo Otta Local Government Area. Samples were analyzed for Physical, Chemical and Microbial parameters. The result showed that, pH (5.9-6.14) was lower than the World Health Organization guideline, which indicates acidic conditions of the water quality as a result of mining activities. Biochemical Oxygen Demand, Total Dissolved Solids levels were also high indicating the presence of pollution. Total hardness exceeded the permissible limits, thereby posing health risk to human health. The heavy metal result showed that: Iron (1.38-1.89mg/L), Manganese (10.73-15.37mg/L), Chromium (0.31-0.34mg/L) and Lead (0.33-0.57mg/L) were higher than the permissible guideline, which causes neurological, carcinogenic risk and gastrointestinal issues in human. Microbial contamination occurred at the 3 sections of the river, with total bacteria count ranging from (6.9 × 106 - 10.6 × 106cfu/mL), total coliform count (4.6 × 106 - 6.2 × 106cfu/mL), and total E. coli count (3.6 × 106 - 5.1 × 106cfu/mL) which exceeded the permissible guideline which can cause deleterious health effect on human health. Thus, there is an urgent need to monitor, and encourage advanced water treatment to mitigate mining's activities on the Iju River.
Abstract: Environmental degradation occurs as a result of mining activities and can lead to deterioration of water quality. From this study, water samples were collected from upstream, midstream, and downstream locations along Iju river in Ado-Odo Otta Local Government Area. Samples were analyzed for Physical, Chemical and Microbial parameters. The result sh...
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