Caracterisation Physico-Chimique Du Lixiviat De La Decharge Sauvage De Meknes

Solid and urban waste produced by the municipality of Meknes amounts to more than 185.103 tons annually. Since 2002 they have been transported to a landfill controlled, wild of an area of 23 hectares on the outskirts of the Commune. This discharge is unfortunately devoid of a leachate treatment device (brownish liquid effluent, produced under the combined action of rainwater and fermentation of buried waste). This study aims to make a physico-chemical characterization and evaluate the states mineral and organic of this leachate. It should be noted that this physicochemical characterization is arbitrary because this discharge will soon be equipped with a waste disposal and recovery center (CEV) using Evalixm as a treatment method. Since 2014, the company '' SUEZ ''Environment began to put in place under control this discharge. For the realization of this characterization, we carried out a series of sampling leachate from June 2014 to June 2015. During this period, the physico-chemical analyzes carried out on these samples, revealed: - low levels of nitrates (NO3 - max = 18,1 mg / L) and phosphates (PO4 3- max = 0,38mg / L) - high levels of ammonium (NH4 + max = 54,13 mg / L) and nitrites (NO 2 - , max = 27,67mg / L). This mineral concentration is translated by a high electrical conductivity which has reached a maximum value of 7.35 10 3 μS / cm. Organic pollution estimated by the pollutant load is important; the values of the Calculated DCO from 1205 to 9207 mg O2 / L with an average of 4808 mg O2 / L, those of DBO are between 53 and 386 mg O2/ L for an average of 157 mg O2 / L. The values of the ratio DBO5 / DCO oscillate between 0.01 and 0.08 with an average of 0.04. This which testifies to the anaerobic character that prevails at the level of the discharge and a probable contamination of the water table. The hydrogen variant (pH) between 6,42 and 8,99 is an annual average of 8,42 which shows that the leachate produced by the landfill is basic. The pH value shows a stagnation (8.42 and 8.23) from one year to the next, reflecting its stability and aging

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PHYSICO-CHEMICAL CHARACTERIZATION OF COCONUT ECOTYPES IN BENIN COASTAL ZONE

International Journal of Research -GRANTHAALAYAH ◽

10.29121/granthaalayah.v9.i8.2021.4168 ◽

2021 ◽

Vol 9 (8) ◽

pp. 215-225

Author(s):

Ulysse Ayihaou Daa-Kpode ◽

Patrice Hodonou Avogbe ◽

Gustave Djedatin ◽

Daniel Datchiglo ◽

Aristide Bakpe ◽

...

Keyword(s):

Coastal Zone ◽

Nutritional Value ◽

Ph Value ◽

Sugar Content ◽

Soluble Sugar ◽

Chemical Characterization ◽

Titratable Acidity ◽

Total Sugar Content ◽

Physico Chemical

Coconut water is highly consumed for refreshment due to its nutritional value. However, its nutritional value varies according to the ecotype and stage of maturity of ecotype. In order to identify best ecotypes with high nutritious value, a physico-chemical composition of ten (10) ecotypes was performed at earlier stage of maturity (3 months). The measured parameters were: coconut height, mass of water, total sugar content, soluble sugar content, protein, titratable acidity and pH. The obtained results showed that all parameters vary from one ecotype to another. All coconut ecotypes contain water slightly acid with a pH value less than 7. Furthermore, there is no relationship between physical and biochemical parameters. However, within characterized ecotypes, Ecotype_2, appeared to have the best biochemical composition with a significant amount of water. This study provided important informations related to physico-chemical characteristics of coconuts ecotypes found in the coastal zone.

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Compost leachate treatment using polyaluminium chloride and nanofiltration

Open Chemistry ◽

10.1515/chem-2017-0015 ◽

2017 ◽

Vol 15 (1) ◽

pp. 123-128 ◽

Cited By ~ 2

Author(s):

Marjana Simonič

Keyword(s):

Zeta Potential ◽

Isoelectric Point ◽

Oxygen Demand ◽

Treatment Method ◽

Aluminium Chloride ◽

Leachate Treatment ◽

Physico Chemical ◽

Pre Treatment ◽

Ph Range ◽

Compost Leachate

AbstractLaboratory scale filtration tests utilizing leachate were conducted to investigate fouling and filtration performance of nanofiltration membranes. The work presented in this study is conducted on real samples rather than model water. Physico-chemical analyses showed that the leachate contained a lot of organic substances, exceeding 20000 mg/L O2 expressed as chemical oxygen demand. Proper pre-treatment method must be chosen in order to reduce fouling index. Coagulation pre-treatment using poly-aluminium chloride was chosen. Two thin film polysulfone membranes were used, purchased by Osmonic Desal. The focus of this research is to assess the influence of the particle size and zeta-potential of the colloidal fraction in leachate on nanofiltration performance. The isoelectric point of both membranes was 4.7 and 4.3, respectively. The fouled membranes were negatively charged over the pH range with isoelectric point shifting to the left (lower pH) indicating the foulant material mainly not charged. It was confirmed by its zeta-potential, measured at -2 mV.

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Optimization of COD and Color Removal for Matang’s Landfill Leachate Treatment by Using Polyaluminum Chloride

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.802.478 ◽

2015 ◽

Vol 802 ◽

pp. 478-483 ◽

Cited By ~ 1

Author(s):

Mohd Faiz Muaz Ahmad Zamri ◽

Mohd Suffian Yusoff ◽

Hamidi Abdul Aziz ◽

Mohd Anuar Kamaruddin

Keyword(s):

Mixing Time ◽

Treatment Method ◽

Leachate Treatment ◽

Polyaluminum Chloride ◽

Mixing Speed ◽

Rapid Mixing ◽

Coagulant Dosage ◽

Physico Chemical ◽

Variation Explained ◽

Flocculation Process

In this research, a physico-chemical treatment method of coagulation-flocculation process is implemented in treating partially stabilized leachate from Matang Landfill, Perak, Malaysia. Central composite design has been used to optimize the independent variables namely polyaluminum chloride (PAC) coagulant dosage (A), rapid mixing speed (B) and rapid mixing time (C). The experimental results were analyzed by using analysis of variance (ANOVA). The results revealed that the percentage of color and COD removal was found increased by increasing rapid mixing speed with optimum removal of 95 % and 56 % respectively. Besides, the R-squared values implied that 86.22 % and 97.34% of the total variation explained by the model equation. Furthermore, the model analysis revealed that rapid mixing speed were significant for removal of color and COD through single parameter (B) and interaction between parameter (AB) respectively. This finding proves the influence of mixing parameter in coagulation-flocculation process for leachate treatment.

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Physico-chemical characterization of water and metallic contamination of Mytilus galloprovincialis in the coastal zone of Saidia

E3S Web of Conferences ◽

10.1051/e3sconf/202129803003 ◽

2021 ◽

Vol 298 ◽

pp. 03003

Author(s):

Khaoula Kasmi ◽

Kamal Belhaj ◽

Abdelhafid Chafi

Keyword(s):

Heavy Metals ◽

Mytilus Galloprovincialis ◽

Ph Value ◽

Chemical Characterization ◽

World Health ◽

Water Conductivity ◽

Food And Agriculture ◽

Physico Chemical ◽

Health Organization ◽

Nitrate And Nitrite

Water is a vital natural resource for life. The metal pollution of aquatic ecosystems is increasing due to the effects of urbanization and industrialization. As a result, heavy metals contamination has become a serious threat to public health because of their toxicity, long persistence, bioaccumulation, and biomagnification in the food chain. This investigation aims to evaluate seawater's Physico-chemical quality and assess the contamination risks of Mytilus galloprovincialis mussels by Cadmium, Zinc, Iron, and Copper. The study was carried out in three stations of Saidia coast during July 2019. The seawater was analyzed for its Physico-chemical parameters, and ICP-AES determined the heavy metals content in mussels. The results show that the tested water has a pH value ranging between 7.48-7.62 with nitrate and nitrite content range between 0-4.78 mg/L, 0.007-0.181 mg/L, respectively. The recorded water conductivity and oxydability values ranged from 22 to 55 mS/cm and from 5.67 to 10.47 mg/L. The mean concentration found in the mussels were in decreasing order, Iron (13.5 mg/kg), Zinc (2.3 mg/kg), Copper (0.65 mg/kg) and Cadmium (0.02 mg/kg), respectively. The obtained results indicate that all values are below the threshold recommended by Food and agriculture organization and world health organization.

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Assessment of Physico-Chemical Properties of Sediments Collected along the Mahul Creek near Mumbai, India

International Letters of Natural Sciences ◽

10.18052/www.scipress.com/ilns.16.54 ◽

2014 ◽

Vol 16 ◽

pp. 54-61 ◽

Cited By ~ 1

Author(s):

Pravin U. Singare ◽

M.V.A. Ansari ◽

N.N. Dixit

Keyword(s):

Ph Value ◽

Chemical Properties ◽

Industrial Effluents ◽

High Concentration ◽

Annual Average ◽

Freshwater Organisms ◽

Creek Water ◽

Physico Chemical ◽

One Year ◽

Control Water

The present study was performed for the period of one year from January 2013 to December 2013 in order to understand the physico-chemical properties of sediments samples collected along the Mahul Creek of Mumbai. The annual average pH value of the creek sediments was recorded as 5.38. It is feared that such low pH value of sediment might increase the acidity of creek water thereby triggering the heavy metal toxicity which will further reduced survivorship in fish through chronic stress and affect the reproductive partner. The annual average salinity content of the sediment was recorded as 4601.17 ppm. It is important here to note that the high salinity of the sediment may increase the salinity level of creek water which is considered as a major stress factor for most freshwater organisms including crustaceans. The average annual concentration of phosphate in the creek sediment was found to 480.39 ppm. Such high concentration of phosphate in the creek sediments might accelerate the process of eutrophication. From the results it appears that as India moves towards stricter regulation of industrial effluents to control water pollution, greater efforts are required to reduce the risk due to the toxic pollutants which are released into the ecosystems.

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Structural and physicochemical characterization of sulfonylhydrazone derivatives designed as hypoglycemic agents

New Journal of Chemistry ◽

10.1039/c7nj00074j ◽

2017 ◽

Vol 41 (14) ◽

pp. 6464-6474

Author(s):

Amanda L. Ibiapino ◽

Laysa P. de Figueiredo ◽

Lídia M. Lima ◽

Eliezer J. Barreiro ◽

Francesco Punzo ◽

...

Keyword(s):

In Silico ◽

Physicochemical Characterization ◽

Chemical Characterization ◽

Hypoglycemic Agents ◽

Physico Chemical

By solving and refining the structures of two APIs a complete experimental andin silicophysico-chemical characterization was carried out.

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Contribution to the Physico-Chemical Characterization of the Wastewater of Four Industrial Units of Preserve and Semi Fish Preserve of the City of Anza (North of Agadir)

Aquatic Science and Technology ◽

10.5296/ast.v8i1.16037 ◽

2020 ◽

Vol 8 (1) ◽

pp. 17

Author(s):

Slimani Noureddine ◽

Hajji Sara ◽

Hafid Naima ◽

Moukrim Abdellatif ◽

Zerbet Mohamed ◽

...

Keyword(s):

Industrial Wastewater ◽

Physicochemical Characterization ◽

Chemical Characterization ◽

Load Ratio ◽

Organic Load ◽

Mineral Matter ◽

Adequate Treatment ◽

Physico Chemical ◽

The City

The main objective of this study is to characterize the industrial wastewater of the city of Anza located north of Agadir in southwestern Morocco in order to recommend an adequate treatment allowing their reuse, thus reducing the nuisances that undergo the receiving environment (Anza Beach). This study concerns four industrial canned and semi-preserved fish plants that directly discharge their wastewater into the Anza beach. The physicochemical characterization of raw wastewater throughout 2017 revealed that these liquid discharges are heavily loaded with organic matter in terms of COD (Avg = 10557 mg O2 / L) and BOD5 (Avg = 4877 mg O2 / L). ), in TSS (Avg = 3537 mg / L) in mineral matter expressed in terms of chlorides (Avg = 25749 mg / L), and in electrical conductivity (Avg = 68957 μs / cm) with a mean pH close to neutrality. The average levels of total nitrogen and total phosphorus are respectively of the order of 631 mg / L and 84 mg / L. Although these wastewaters have a high organic load (ratio BOD5 / COD = 0.46 and TSS / BOD5 = 0.72), they have a satisfactory biodegradability. Examination of the COD / BOD5 ratio of about 2.16 clearly underlines the biodegradability of the industrial wastewater studied. Biological treatment seems quite suitable.

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Pollution Discharge Scenario of Metallurgical Industries along Dombivali Industrial Belt of Mumbai, India

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.22.40 ◽

2013 ◽

Vol 22 ◽

pp. 40-47

Author(s):

P.U. Singare ◽

S.S. Dhabarde

Keyword(s):

Pollution Control ◽

Industrial Wastewater ◽

Ph Value ◽

Chemical Properties ◽

Chloride Content ◽

Chemical Parameters ◽

Toxic Heavy Metals ◽

Treatment Techniques ◽

Physico Chemical ◽

One Year

The paper deals with monitoring of pollution arising due to metallurgical industries located along the Dombivali industrial belt of Mumbai, India. The study was carried for the period of one year from June, 2012 to May, 2013 to study the level of toxic heavy metals and the physico-chemical properties of waste water effluents discharged from the above industries. The concentration levels of Cu, Ni, Cr, Pb, Fe and Zn were found to be maximum of 41.00, 1.47, 5.97, 2.55, 46.86 and 12.97 ppm respectively during winter and summer seasons starting from December to May. The pH value was found to be maximum of 10.30 in the month of February, while the conductivity was found to be maximum of 25067 μmhos/cm in the month of July. The majority of physco-chemical parameters like salinity, chloride content, and total solids (TS) were observed to be maximum in the month of June having values of 6.32, 2411 and 20738 ppm respectively. The high cyanide (0.09 ppm), phosphate (117.21 ppm), COD (13640 ppm) and low DO content of 5.79 ppm were observed in the effluents released during the month of February. The alkalinity content in the effluent was maximum of 1395 ppm in the month of May. The hardness and BOD values of the effluents were reported maximum of 490 and 557 ppm in the month of October. From the results of the present investigation it seems that the time has come to implement proper effluent water treatment techniques and enforcement of pollution control by the regulatory authority on the indiscriminate discharge of industrial wastewater into water bodies.

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