Temporal Variation in Leachate Composition of A Newly Constructed Landfill Site in Lahore in Context To Human and Environmental Risks

2021 ◽  
Author(s):  
Mahsoon Ashraf ◽  
Muhammad Zeshan ◽  
Sadia Hafeez ◽  
Rahib Hussain ◽  
Abdul Qadir ◽  
...  
Keyword(s):  
Trace Elements ◽  
Phenolic Compounds ◽  
Temporal Variation ◽  
Quality Standard ◽  
Landfill Site ◽  
High Concentration ◽  
Oil And Grease ◽  
Temporal Study ◽  
One Year ◽  
Leachate Composition

Abstract The present study was aimed to explore the seasonal and temporal variation in the extent and sources of physiochemical and trace elements in the Lakhodair solid waste Landfill site in Lahore, Pakistan. For the seasonal and temporal study of leachates, systematic composite samples were collected monthly (for one year) and analyzed for physiochemical and trace elements. The concentration of TDS, TSS, COD, NH3-N, BOD5, sulfate, sulfides, phenolic compounds, oil and grease were higher than the National Environmental Quality standard (NEQs). The trace elements, namely Mn (1.7 mg/L), and Cd (0.05 mg/L), while in a few samples Fe (14 mg/L), Ni (1.6 mg/L), and Zn (6.7 mg/L) were higher than the NEQs. In Lakhodair leachates, TDS, COD, NH3-N, BOD5, sulfides, and Cl have a high concentration coefficient (i.e., CC 3 to > 6), which may cause considerable to high contamination, while remaining parameters may cause low to moderate contamination (CC 1 to ≤ 3). The lower BOD5/COD ratio (< 0.1) in the Spring and Autumn seasons, represents the active methanogenesis and anaerobic activities in the Lakhodair landfill site. The anaerobic and methanogenesis enhance the redox reaction as a result CO2 is emitted and alternatively increases pH, TDS, COD, Cl, BOD5, NH3-N, sulfides, phenolic compounds in leachates. However, the lower concentration of some trace elements may be because of an anaerobic process that may immobilize the trace elements. It is presumed that the trace elements in the Lakhodair landfill may be in a metastable state, which is not easy to leach out. It’s hereby recommended that Leachate produced in the Lakhodair landfill site need to handle carefully so as to limit the environmental and health implication.

scholarly journals Characteristics Of Leachate Generated At Landfill Sites And Probable Risks Of Surface And Groundwater Pollution In The Surrounding Areas : A Case Study Of Matuail Landfill Site, Dhaka

1970 ◽  
Vol 35 (2) ◽  
pp. 153-160 ◽  
Author(s):  
MD Azim ◽  
M Mahabubur Rahman ◽  
Riaz Hossain Khan ◽  
ATMM Kamal
Keyword(s):  
Surface Water ◽  
Groundwater Pollution ◽  
Quality Standard ◽  
Landfill Site ◽  
High Concentration ◽  
Laboratory Test Results ◽  
Surrounding Areas ◽  
Surface And Groundwater

The characteristics of leachate and its probable risks on surface and groundwater pollution were investigated following the analysis of some chemical parameters of the leachate generated in the Matuail landfill site, Dhaka, Bangladesh. The laboratory test results on untreated grab leachate samples show high concentration of TDS (734 ppm), COD (1631 ppm), NH4 +-N (1253 ppm), HCO3 - (27962 ppm) and certain heavy metals such as Ni (1.05 ppm) and Cr (0.74 ppm) and have very high potential for contaminating ground and surface water. Biological treatment through aeration and sedimentation improves the quality of leachate significantly. However, parameters such as COD (1437 ppm) are found to be still high even after treatment. The surface water samples around the landfill site appear to be contaminated, most probably, through the overflow of leachate. Groundwater parameters, however, satisfy drinking water quality standard except, the concentration of NH4 +-N (maximum 74.2 ppm) and K (maximum 25 ppm). Key words: Leachate; Pollution; Solid waste; Landfill DOI: http://dx.doi.org/10.3329/jbas.v35i2.9418 JBAS 2011; 35(2): 153-160

MEASURES FOR ENVIRONMENT CONSERVATION IN ENCLOSED COASTAL SEAS

2017 ◽  
Author(s):  
Keizo Negi ◽  
Keizo Negi ◽  
Takuya Ishikawa ◽  
Takuya Ishikawa ◽  
Kenichiro Iba ◽  
...  
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Water Mass ◽  
Sea Water ◽  
Red Tide ◽  
Water Environment ◽  
Quality Standard ◽  
Tokyo Bay ◽  
View Point ◽  
High Concentration

Japan experienced serious water pollution during the period of high economic growth in 1960s. It was also the period that we had such damages to human health, fishery and living conditions due to red tide as much of chemicals, organic materials and the like flowing into the seas along the growing population and industries in the coastal areas. Notable in those days was the issues of environment conservation in the enclosed coastal seas where pollutants were prone to accumulate inside due to low level of water circulation, resulting in the issues including red tide and oxygen-deficient water mass. In responding to these issues, we implemented countermeasures like effluent control with the Water Pollution Control Law and improvement/expansion of sewage facilities. In the extensive enclosed coastal seas of Tokyo Bay, Ise Bay and the Seto Inland Sea, the three areas of high concentration of population, we implemented water quality total reduction in seven terms from 1979, reducing the total quantities of pollutant load of COD, TN and TP. Sea water quality hence has been on an improvement trend as a whole along the steady reduction of pollutants from the land. We however recognize that there are differences in improvement by sea area such as red tide and oxygen-deficient water mass continue to occur in some areas. Meanwhile, it has been pointed out that bio-diversity and bio-productivity should be secured through conservation/creation of tidal flats and seaweed beds in the view point of “Bountiful Sea” To work at these challenges, through the studies depending on the circumstances of the water environment in the enclosed coastal seas, we composed “The Policy of Desirable State of 8th TPLCS” in 2015. We have also added the sediment DO into the water quality standard related to the life-environmental items in view of the preservation of aquatic creatures in the enclosed water areas. Important from now on, along the Policy, is to proceed with necessary measures to improve water quality with good considerations of differences by area in the view point of “Beautiful and bountiful Sea”.

scholarly journals Kumquat (Fortunella margarita): A Good Alternative for the Ingestion of Nutrients and Bioactive Compounds

Proceedings ◽  
2020 ◽  
Vol 70 (1) ◽  
pp. 105
Author(s):  
Clarice Silva e Souza ◽  
Pamella Cristine Anunciação ◽  
Ceres Mattos Della Lucia ◽  
Rosana Gonçalves Rodrigues das Dôres ◽  
Regina Célia Rodrigues de Miranda Milagres ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Dietary Fiber ◽  
Inductively Coupled Plasma ◽  
Soluble Solids ◽  
Emission Spectrometry ◽  
Total Phenolic ◽  
High Concentration ◽  
Fruit Peel ◽  
Total Dietary Fiber

Citrus fruit is preferred in the choice of consumers. Kumquat (F. margarita) is an unconventional citrus of increasing consumer interest because of its exotic flavor, and its functional potential that offers health benefits to consumers. It is a fruit traditionally consumed by whole fruit (peel and pulp), giving this fruit a distinctive flavor. For this reason, this study analyzed the physical, chemical, and nutritional characteristics of kumquat (peel and pulp). The physicochemical analysis was performed according to the Adolfo Lutz Institute. Analysis of moisture, ashes, macronutrients, and total dietary fiber was carried out according to AOAC. Minerals were analyzed by inductively coupled plasma optical emission spectrometry. Vitamins C and E, carotenoids and flavonoids were analyzed by HPLC. Phenolic compounds (Folin-Ciocalteu) and antioxidant capacity (DPPH) were determined by spectrophotometry. The kumquat had low pH, soluble solids content and low caloric value. It was a source of dietary fiber, minerals (K, Ca, P, Mg) and carotenoids; the most expressive was α-carotene (661.81 μg 100 g−1). The ascorbic acid concentration was 2326.24 μg 100 g−1. α-tocopherol (569.00 μg 100 g−1) was the most expressive component of vitamin E. There was a presence of apigenin and eriodictyol. The fruit (peel and pulp) has a high concentration of total phenolic compounds (98.55 ± 1.93 mg GAE 100 g−1) and good antioxidant capacity (62%) was found. Kumquat is a good source of fiber and vitamin A, and due to its antioxidant capacity and the presence of other essential and beneficial nutrients for a diet, consumption of kumquat can be suggested to complement the diet. This fruit is a viable food alternative, and its consumption should be encouraged, contributing a source of income, sovereignty, and food security.

scholarly journals Valorization of Sicanaodorifera (Vell.) Naudin Epicarp as a Source of Bioactive Compounds: Chemical Characterization and Evaluation of Its Bioactive Properties

Foods ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 700
Author(s):  
Bianca R. Albuquerque ◽  
Maria Inês Dias ◽  
Carla Pereira ◽  
Jovana Petrović ◽  
Marina Soković ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Bioactive Compounds ◽  
Food Additives ◽  
Chemical Characterization ◽  
Dry Weight ◽  
Bioactive Molecules ◽  
High Concentration ◽  
Minimal Inhibitory Concentrations ◽  
Antibacterial And Antifungal Activities ◽  
Antibacterial And Antifungal

Fruit bio-residues can be interesting for the recovery of bioactive molecules, such as phenolic compounds, tocopherols, vitamins, among others. These compounds can be targeted at the food industry and used for the development of functional foods or as food additives. In some cases, fruit epicarps are converted into by-products with non-commercial value, and generally, these fruit parts have a higher content in bioactive compounds than the fruit pulp. From this perspective, S. odorifera, a Brazilian fruit, has an inedible epicarp that could be explored to obtain biological compounds. Therefore, the aims of this study were to evaluate the chemical composition and the antioxidant, anti-proliferative, anti-inflammatory, and antimicrobial bioactivities of this by-product. S. odorifera epicarp showed a total of four organic acids, four phenolic compounds, highlighting the high concentration of anthocyanins (24 ± 1 mg/g dry weight (dw)) and high content of tocopherols (366 ± 2 mg/100 g dw). The hydroethanolic extract showed considerable antioxidant activity (EC50 values of 48.2 ± 0.5 and 27 ± 1 µg/mL for TBARS and OxHLIA assays, respectively), as also antibacterial and antifungal activities (minimal inhibitory concentrations (MICs) ≤ 2.2 mg/mL). The results obtained in this study suggest that Sicana odorifera epicarp represents a reliable option for the development of novel natural-based colorants with functional/bioactive proprieties.

scholarly journals Antioxidant properties, quantification and stability of betalains from pitaya (Hylocereus undatus) peel

2014 ◽  
Vol 45 (2) ◽  
pp. 323-328 ◽  
Author(s):  
Fernanda Robert de Mello ◽  
Claudia Bernardo ◽  
Caroline Odebrecht Dias ◽  
Luciano Gonzaga ◽  
Edna Regina Amante ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Antioxidant Properties ◽  
Raw Material ◽  
High Concentration ◽  
Natural Colorant ◽  
Wide Ph Range ◽  
Hylocereus Undatus ◽  
Ph Range ◽  
Promising Source

Pitaya peel can be used as a raw material for betalains extraction. The aim of this research was to quantify phenolic compounds, antioxidant activity and betalains on pitaya peel. Furthermore, evaluate the betalains stability against various pH conditions and exposure time of heating. The results showed that pitaya peel contains phenolic compounds and presented antioxidant activity. Moreover it showed high concentration of betalains (101.04mg equivalent to betanin. 100g-1) which were stable over a wide pH range (3.2 - 7.0) and were resistant to heating (100oC) up to 10 minutes at pH range from 3.7 to 5.5. Therefore, pitaya peel is a promising source of betalains which can be applied as a natural colorant for food.

INBORN ERROR OF HISTIDINE METABOLISM

PEDIATRICS ◽  
1962 ◽  
Vol 29 (5) ◽  
pp. 714-728
Author(s):  
H. Ghadimi ◽  
M. W. Partington ◽  
A. Hunter
Keyword(s):  
Ferric Chloride ◽  
Urocanic Acid ◽  
High Concentration ◽  
Normal Children ◽  
Total Lack ◽  
Normal Urine ◽  
One Year ◽  
The One ◽  
Blue Eyes ◽  
Derivatives Of

A 3-year-old girl with fair hair and blue eyes came under observation because of speech retardation. The patient was given a phenylalanine-free diet, since persistently positive urine tests with ferric chloride and reagent strips (Phenistix) were strongly suggestive of phenylketonuria. On further investigation she was found to be suffering from a totally different and not heretofore recognized condition, the salient features of which were an abnormally high concentration of histidine in the blood and an excessive output of histidine in the urine. The child's sister, one year older, presented the same metabolic anomaly. In each case both the concentration of histidine in plasma and the daily output were directly related to the amount of protein in the diet; but even at their lowest levels they greatly exceeded those of normal children of the same age. An oral load of histidine was followed by an increase of histidine in plasma much higher and more prolonged than that observed in controls, and by the excretion of a much larger fraction of the ingested dose. The urine of each sister contained not only excessive amounts of histidine but also notable quantities of imidazole-pyruvic, imidazole-acetic, and imidazole-lactic acid, histidine derivatives of which normal urine contains only traces. It is concluded that in the two sisters the normally predominant pathway of histidine catabolism, which leads through urocanic acid to glutamic acid, was partially or completely blocked. Since, even after histidine loading, the urines never contained detectable amounts of urocanic acid, the block must precede the formation of that substance. The condition presented is therefore due primarily to a deficiency or total lack of histidine-alpha-deaminase; the enzyme which converts histidine to urocanic acid. As a result of this defect histidine is forced to take the alternative but less efficient pathway which begins with its transamination to imidazole-pyruvic acid. This substance is the one responsible for positive reactions in the ferric chloride and Phenistix tests. All urine specimens examined, whether from the patient or from normal controls, contained considerable quantities of an unidentifiable imidazole compound ("X"), which does not appear to have been previously reported. The existence of this substance may call for some modification of current concepts of histidine metabolism in man.

scholarly journals Antioxidant Compounds, Mineral Content and Antioxidant Activity of Several Tomato Cultivars Grown in Southwestern Romania

2013 ◽  
Vol 41 (1) ◽  
pp. 136 ◽  
Author(s):  
Violeta NOUR ◽  
Ion TRANDAFIR ◽  
Mira E. IONICA
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Trace Elements ◽  
Phenolic Compounds ◽  
Total Phenolics ◽  
Antioxidant Activities ◽  
Fruit Shape ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Tomato Cultivars

Ten indeterminate tomato cultivars differing in fruit shape and typology, grown simultaneously in a greenhouse from Oltenia (Southwestern Romania) and harvested at red ripe stage, were investigated for the contents in ascorbic acid, lycopene, β-carotene, total phenolics, minerals (K, Na, Ca and Mg) and trace elements (Fe, Cu, Mn, Cr, Zn and B). In addition, their antioxidant activities were determined. Significant differences were found among tomato cultivars in all studied antioxidant compounds, as well as in the antioxidant activity. Ascorbic acid ranged from 91.9 to 329.7 mg kg-1 fw, lycopene ranged from 19.7 to 49.0 mg kg-1 fw, while total phenolic compounds varied between 300.2 and 557.8 mg kg-1 fw. Antioxidant activity ranged from 0.81 mmol Trolox kg-1 fw to 1.74 mmol Trolox kg-1 fw and it was significantly correlated to total phenolics content (r = 0.91; p< 0.05). The cocktail type cultivar ‘Tiger’ and the cherry type cultivar ‘Belle’ proved to be the most powerful in antioxidant activity and phenolic compounds while the rectangular plum shaped cultivar ‘Porto’ recorded the highest average lycopene content. A valuable cultivar proved to be the brownish red ‘Sacher’ which registered among the highest contents of phenolics, lycopene and ascorbic acid. Mineral and trace elements contents were also significantly affected by cultivars. Values recorded for K, Ca and Mg ranged from 2139.6 to 3056.9 mg kg-1, 137.7 to 325.8 mg kg-1 and 27.3 to 168.7 mg kg-1 respectively.

scholarly journals ПЕРСПЕКТИВИ ЗАСТОСУВАННЯ ЧУБУШНИКА ЯК ЛІКАРСЬКОЇ РОСЛИНИ

2016 ◽  
Vol 18 (3(70)) ◽  
pp. 123-128
Author(s):  
V.D. Ishchenko ◽  
S.V. Kostenko ◽  
V.M. Kostenko ◽  
Y.V. Tymoshyk
Keyword(s):  
Veterinary Medicine ◽  
Phenolic Compounds ◽  
Metabolic Regulation ◽  
Reagent Solution ◽  
High Concentration ◽  
Natural Origin ◽  
Basic Action ◽  
Veterinary Practice ◽  
The Impact

Medicinal plants are insufficiently studied and almost endless. The use of phytomedication enables reduce the impact of xenobiotics on animals organism through the natural origin of active compounds and associated and auxiliary substances smoothing the basic action and prevent the manifestation of side effects. One of such plants the possibility of using in veterinary practice is still insufficiently studied is mock–orange. Considering on the important role of phenolic compounds in the metabolic regulation of plant and diversity of impact of these substances on organism of animals and humans, in leaves of mock–oranges different cultivar was identified the content of phenolic secondary metabolites to identify the prospects for their further using in veterinary medicine. The qualitative reaction with the Wilson reagent, solution of iron (III) chloride and by cyanidin reaction in extracts from mock–orange leaves was established the presence of phenolic compounds. Further phytochemical investigations established that the content of phenols in the investigated extracts is between 33.0 ± 0.48 to 107.1 ± 0.91 mg/g (in Philadelphus L. 'Avalanche'). The content of flavonoids in alcohol extracts from leaves of different species of mock–oranges varies from 5.3 ± 0.41 to 10.6 ± 0.41 mg/g. Greatest quantity of flavonoids at relatively of low content of phenols contained in the preparation from leaves of Philadelphus coronaries 'Nana '(mock–orange dwarf), the use of which, along with Philadelphus L. 'Avalanche' can be perspective in medical and veterinary practice, considering on the high concentration of phenols and flavonoids and coumarins in these mock–oranges breed.  

scholarly journals State-of-the-art and Problems of Walnut Propagation Methods

2015 ◽  
Vol 15 (1) ◽  
pp. 95
Author(s):  
Stefan Gandev
Keyword(s):  
Phenolic Compounds ◽  
State Of The Art ◽  
Callus Formation ◽  
Suitable Method ◽  
High Concentration ◽  
Propagation Methods

At present budding and grafting are the most widely used appro­aches in the production of grafted walnut trees. Poor callus formation in walnut makes it difficult to propagate. Walnut propagation by cuttings is a method difficult to be realized. The presence of high concentration of phenolic compounds in its tissue and their oxidation, is the major reason of using micropropagation as a suitable method. The most commonly used technique is patch budding. Other used methods are bench grafting and hot callus. In the last years hot callus as a technique has been successfully used for propagation of walnut cultivars, but the height of the trees is not enough at the end of the season. A new walnut propagation method is call­ed epicotyl grafting. All the methods of walnut propagation are dis­cussed in the present paper.

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