Effect of sulfate anions on nitrates accumulation and total Kjeldahl nitrogen content in lettuce plants cultivated in peat-perlite mixture

2019 ◽  
pp. 239-246
Author(s):  
Ch. Karipidis ◽  
D. Douma ◽  
P. Yfanti ◽  
K. Zisis ◽  
G. Patakioutas
Keyword(s):  
Nitrogen Content ◽  
Total Kjeldahl Nitrogen ◽  
Kjeldahl Nitrogen

Municipal wastewater characteristics at Irtah pumping station in the Tulkarem city

2000 ◽  
Vol 42 (1-2) ◽  
pp. 337-340 ◽  
Author(s):  
H.Q. Shaheen
Keyword(s):  
Dissolved Oxygen ◽  
Suspended Solids ◽  
Municipal Wastewater ◽  
Total Suspended Solids ◽  
Ammonia Nitrogen ◽  
Total Kjeldahl Nitrogen ◽  
Pumping Station ◽  
Kjeldahl Nitrogen ◽  
Sodium And Potassium ◽  
Mixed Samples

Wastewater flow samples were collected at 2-hour intervals for one week during the month of October 1998 at the Irtah wastewater pumping station in the Tulkarem city. The station collects about 32% of the wastewater of the Tulkarem city and 25% of the Tulkarem camp. The samples were mixed on 24-hour basis and tested for the pollution parameters BOD5, COD, total suspended solids, orthophosphate, total Kjeldahl nitrogen, ammonia nitrogen, nitrate, calcium, sodium and potassium. At the 2-hour intervals the wastewater flow was tested for conductivity, temperature, pH, and dissolved oxygen. The variation of the strength of these parameters and its relation to the flow values are observed and evaluated. The produced organic strength versus the flow and the 24-hour mixed samples are presented and commented upon.

The use of microwaves in the acceleration of digestion and colour development in the determination of total Kjeldahl nitrogen in soil

The Analyst ◽  
1999 ◽  
Vol 124 (11) ◽  
pp. 1719-1726 ◽  
Author(s):  
Christopher J. Mason ◽  
Mark Edwards ◽  
Philip G. Riby ◽  
Graham Coe
Keyword(s):  
Total Kjeldahl Nitrogen ◽  
Colour Development ◽  
Kjeldahl Nitrogen

scholarly journals Eco-Friendly Soaking Process Using Tannic Acid as an Alternative Bactericide

2014 ◽  
Vol 40 (1) ◽  
pp. 3-12 ◽  
Author(s):  
Arife Candaş Adigüzel Zengin ◽  
Selime Menteş Çolak ◽  
Gökhan Zengin ◽  
Eylem Kiliç
Keyword(s):  
Natural Products ◽  
Tannic Acid ◽  
Bacterial Load ◽  
Oxygen Demand ◽  
Hazardous Substances ◽  
Total Kjeldahl Nitrogen ◽  
Leather Industry ◽  
Tannery Effluents ◽  
High Concentrations ◽  
Kjeldahl Nitrogen

Abstract Eco-friendly leather processes based on the usage of natural products have become a potentially attractive issue for leather industry during the last few decades. Synthetic protective chemicals like bactericides used in most soaking process are known as hazardous substances and cause tannery effluents with high concentrations of Chemical Oxygen Demand (COD). In the present study, the effect of tannic acid on microorganisms, skin, wool and effluent were investigated in order to demonstrate the applicability of tannic acid in soaking process instead of commonly used bactericides. The bacterial load (cfu/ml), COD and Nitrogen Content (N) of the soaking effluents and Total Kjeldahl Nitrogen (TKN) content of skins and wools were investigated. Application of 0.5 and 1 wt% tannic acid concentrations was more effective than commercial bactericide, while comparable results were achieved by 0.1 and 0.3 wt% tannic acid. The application of tannic acid for soaking process resulted in lower COD and N values of effluents. The results show that tannic acid has the potential to be an alternative, eco-friendly bactericide for leather industry by reducing the pollution of leather soaking process.

scholarly journals Optimization of Bioslurry-Available Plant Nutrients Using T. brownii and Acanthaceae spp. Biocatalysts

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Bakari A. Chaka ◽  
Aloys M. Osano ◽  
Justin K. Maghanga ◽  
Martin M. Magu
Keyword(s):  
Plant Extracts ◽  
Plant Nutrients ◽  
Spectroscopic Methods ◽  
Ammoniacal Nitrogen ◽  
Total Kjeldahl Nitrogen ◽  
Ambient Conditions ◽  
Kitchen Waste ◽  
Wet Chemistry ◽  
Kjeldahl Nitrogen ◽  
Control Samples

The plant extracts of T. brownii and Acanthaceae spp. have been used as biocatalysts by several communities in Kenya to hasten anaerobic digestion. This study aimed at assessing the viability of these two extracts in hastening the availability of plant nutrients from bioslurry at ambient conditions. A controlled research design was followed using uncooked kitchen waste as the substrate for 28 retention days. Changes in bioslurry physicochemical properties and available plant nutrients were monitored every 7 days using wet chemistry and spectroscopic methods. The findings indicated that the two extracts significantly impacted the levels of available plant nutrients in the bioslurry compared to the control samples. T. brownii additives significantly increased the levels of lime content, total Kjeldahl nitrogen, total phosphorus, phosphoric acid, sulfur, and soluble silicic acid. On the contrary, Acanthaceae spp. additives significantly increased the levels of calcium, potassium, nitrates, total ammoniacal nitrogen, sulfates, and phosphates in the bioslurry samples. The use of these plant extracts thus reduces the time taken while increasing the concentration of available plant nutrients from bioslurry.

scholarly journals A model for cost estimation of system for piggery wastes treatment ponds: a case study

2003 ◽  
Vol 23 (3) ◽  
pp. 463-473
Author(s):  
Waldir Medri ◽  
Rejane Helena Ribeiro da Costa
Keyword(s):  
Total Phosphorus ◽  
Cost Estimation ◽  
Water Hyacinth ◽  
Treatment System ◽  
Fecal Coliforms ◽  
Design Parameters ◽  
Total Kjeldahl Nitrogen ◽  
System A ◽  
Kjeldahl Nitrogen

This article presents the results from the monitoring of a system of ponds for the treatment of piggery wastes, carried out during a 20 months period, with the objective to determine design parameters for the optimization of the treatment system. A series composed of two anaerobic ponds, one facultative pond and one water hyacinth pond, gave an efficiency of 97% in the removal of BOD5, 93% for total phosphorus, 91% for total Kjeldahl nitrogen and a removal of 7 log units for fecal coliforms. A model of the optimization incurred in the treatment of these wastes was developed, within economic concepts.

scholarly journals Multi-Scale Analysis of the Dependence of Water Quality on Land Use Using Linear and Mixed Models

Water ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 2618
Author(s):  
Johann Alexander Vera Mercado ◽  
Bernard Engel
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Suspended Solids ◽  
Spatial Scales ◽  
Oxygen Demand ◽  
Total Suspended Solids ◽  
Quality Parameters ◽  
Total Kjeldahl Nitrogen ◽  
Nitrate And Nitrite ◽  
Kjeldahl Nitrogen

Land use influences water quality in streams at different spatial scales and varies in time and space. Water quality has long been associated with agricultural and urban land uses in catchments. The effects of developed, forest, pasture, and agricultural land use on nitrogen, nitrate, and nitrite (NNN); total phosphorus (TP); total suspended solids (TSS); chemical oxygen demand (COD); dissolved oxygen (DO) and total Kjeldahl nitrogen (TKN) concentrations and their sensitivity were quantified to spatial pattern differences. The linear mixed modeling framework was used to examine the importance of spatial extent on models with water quality parameters as the response variable and land use types as the predictor variable. The results indicated that land use categories on different water quality parameters were significant and dependent on the selected spatial scales. Land use exhibited a strong association with total phosphorus and total suspended solids for close reach distances. Phosphorus is not highly soluble, and it binds strongly to fine soil particles, which are transported by water via runoff. Nitrogen, nitrate, and nitrite, dissolved oxygen, chemical oxygen demand, and total Kjeldahl nitrogen concentrations were better predicted for further reach distances, such as 45 or 50 km, where the best model of nitrogen, nitrate, and nitrite is consistent with the high mobility of NO3−.

scholarly journals Impact of Tetracycline on Microbial Communities in the Secondary Treatment Process of Wastewater Treatment Systems

2021 ◽  
Author(s):  
GM I. Islam
Keyword(s):  
Wastewater Treatment ◽  
Microbial Communities ◽  
Inhibitory Effect ◽  
Ammonia Removal ◽  
Secondary Treatment ◽  
Total Kjeldahl Nitrogen ◽  
Nitrogen Concentrations ◽  
Nutrient Replacement ◽  
And Function ◽  
Kjeldahl Nitrogen

This study examined the impact of the antibiotic tetracycline at environmentally relevant concentrations (1μg/L and 10μg/L) on the composition and function of the microbial community that are responsible for the secondary treatment step in a municipal wastewater treatment plant (MWTP). Specifically, this study examined whether nitrification is inhibited by the presence of tetracycline under high and low nutrient replacement conditions. Aerated semi-batch reactors were set up containing activated sludge samples from a MWTP. Reactors were replenished with a synthetic wastewater media at two constant replacement rates for a period of 4 weeks. Parameters such as ammonia, nitrate/nitrite and total Kjeldahl nitrogen concentrations were monitored to evaluate the nitrogen removal efficiency. Under a low nutrient replacement rate, tetracycline was observed to have a positive impact on ammonia removal and nitrification than at the higher one. However, total Kjeldahl nitrogen concentrations increased in low nutrient replacement reactors under the presence of tetracycline which suggested a potential inhibitory effect on denitrification. At high nutrient replacement rates, tetracycline did not demonstrate an inhibitory effect on both nitrification and denitrification processes. Overall, it appears that both antibiotic presence and nutrient replacement rates can influence the community composition and function of microbial communities found in a MWTP.

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