scholarly journals Provision Study of Lactobacillus spp. and Barley Straw Against Dynamics of DO, pH and Plankton Abundance

2020 ◽  
Vol 9 (1) ◽  
pp. 41
Author(s):  
Silvi Hardiyana ◽  
Boedi Rahardja Setya Rahardja ◽  
EndangMasithah Dewi Masithah
Keyword(s):  
Research Study ◽  
Fish Farming ◽  
Barley Straw ◽  
Remedial Action ◽  
Positive Bacterium ◽  
Quality Of Water ◽  
Algae Growth ◽  
Lactobacillus Spp

Fish farming activities in recent years, many shows water quality conditions do not support fish life are maintained optimally and decreases the carrying capacity, one DO and pH parameters. As a remedial action is carried out either by probiotic bacteria One commonly used in the application of probiotics is Lactobacillus spp. Gram positive bacterium Lactobacillus spp. widely used as probiotics to improve the quality of air Penggunaan Lactobacillus spp. is expected to improve the quality of water that is accelerating the overhaul of organic material in the water and suppress harmful microorganisms that can affect the dynamics of DO, pH and increasing nutrient waters. Barley straw is a powdered extract of hay-producing H2O2 which serves to inhibit the growth of microalgae. The use of straw extract powder has become more common as an alternative method for controlling excessive algae growth by blocking and not get rid of it so that stabilization of the abundance of plankton in the water can be controlled well.To study the role of Lactobacillus spp. and barley straw in the management of organic matter and plankton abundance Giving a research study Lactobacillus spp. and barley straw to the dynamics of DO, pH and Abundance of Plankton.

scholarly journals The role of the mahogany tree (Swietenia macrophylla King) on quantity and quality of water that fall below the canopy

2021 ◽  
Vol 918 (1) ◽  
pp. 012036
Author(s):  
M F Fadhilah ◽  
Y Hidayat ◽  
A Hadiyane
Keyword(s):  
Water Quality ◽  
Quality Measurement ◽  
Hardness Measurement ◽  
Swietenia Macrophylla ◽  
Quality Of Water ◽  
The Impact ◽  
Water Quality Measurement ◽  
Rainwater Quality

Abstract Mahogany trees (Swietenia macrophylla) are often planted in urban forests area. This shady-crowned tree has a role in controlling the quantity and quality of rainwater that falls to the ground. Mahogany trees also affect the quality of rainwater through interception, fall, and stemflow. The purpose of this research was to determine the impact of the interception process, such as throughfall and stemflow, on changes in rainwater quality of the mahogany tree. The Data that needed to be measured were tree dimension, rainfall interception, and rainwater quality. Interception measurement was performed by calculating the number of throughfall and stemflow in one month-measurement. While the measurement of rainwater quality was measured once in the laboratory. These water quality measurements include Electrical Conductivity (EC), hardness, the content of Elements Ca, Mg, Na and K, and pH concentrations. The results based on the total area of the crown showed that mahogany had an interception value of 18.088%. In the throughfall measurement, the mahogany has a throughfall of 81.799%, while the amount of the stemflow is only 0.113%. The correlation of interception values, throughfall, and stemflow with rainfall are in general positively correlated. That means the higher rainfall water will increase the number of interception, throughfall, and stemflow. The results on water quality measurement explain that Ec value in rainwater interception was increased compared to water produced from rainfall in mahogany trees. It also has the same condition in hardness measurement. In pH measurements, the interception of rainwater has less pH when compared to direct rainfall water. In addition, the content of Elements Ca, Mg, K, and Na in Stemflow and Throughfall water have more numbers than rainfall itself.

Monitoring the quality of water and the role of measurement

1992 ◽  
Vol 35 (3) ◽  
pp. 371-373
Author(s):  
V. A. Kimstach
Keyword(s):  
Quality Of Water

scholarly journals Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 594
Author(s):  
Daniele C. da Silva Alves ◽  
Bronach Healy ◽  
Luiz A. de Almeida Pinto ◽  
Tito R. Sant’Anna Cadaval ◽  
Carmel B. Breslin
Keyword(s):  
Heavy Metal Ions ◽  
Organic Molecules ◽  
Anionic Dyes ◽  
Short Introduction ◽  
Silica Supports ◽  
Quality Of Water ◽  
Aqueous Environments ◽  
Recent Developments

The quality of water is continuously under threat as increasing concentrations of pollutants escape into the aquatic environment. However, these issues can be alleviated by adsorbing pollutants onto adsorbents. Chitosan and its composites are attracting considerable interest as environmentally acceptable adsorbents and have the potential to remove many of these contaminants. In this review the development of chitosan-based adsorbents is described and discussed. Following a short introduction to the extraction of chitin from seafood wastes, followed by its conversion to chitosan, the properties of chitosan are described. Then, the emerging chitosan/carbon-based materials, including magnetic chitosan and chitosan combined with graphene oxide, carbon nanotubes, biochar, and activated carbon and also chitosan-silica composites are introduced. The applications of these materials in the removal of various heavy metal ions, including Cr(VI), Pb(II), Cd(II), Cu(II), and different cationic and anionic dyes, phenol and other organic molecules, such as antibiotics, are reviewed, compared and discussed. Adsorption isotherms and adsorption kinetics are then highlighted and followed by details on the mechanisms of adsorption and the role of the chitosan and the carbon or silica supports. Based on the reviewed papers, it is clear, that while some challenges remain, chitosan-based materials are emerging as promising adsorbents.

scholarly journals APPROACHES BASED ON ARTIFICIAL INTELLIGENCE FOR WATER SUPPLY SYSTEMS

2021 ◽  
Vol 1 (2021) ◽  
pp. 5-9
Author(s):  
Gabriela Andrei
Keyword(s):  
Artificial Intelligence ◽  
Water Supply ◽  
Fish Farming ◽  
Raw Material ◽  
Water Supply Systems ◽  
Quality Of Water ◽  
Current Context ◽  
Concrete Solution ◽  
Supply Systems

"In the current context of the existence of life, of the development of human activities, water has a double importance: - environmental factor, generator of ecological systems - “raw material” for certain uses (drinking water, industrial water, fish farming, leisure, etc.) The current problems in the field of water supply are due to: - exponential increase of water demand; - the limited water resources and their uneven distribution, which requires large and expensive works of development and accumulation of water; - deterioration of the quality of water sources, as a result of human activity and the emergence of industries that discharge waste, containing very stable impurities, difficult to remove from water, in the processes of water purification or treatment; - increase in standards on quality conditions that must be met by water delivered to the population [1]. For the extensive and intensive development of water supplies, a concrete solution, already existing in the area of Artificial Intelligence is given by heuristic methods and Evolutionary Calculus. This article provides an overview of the role of the most important metaheuristics, based on evolutionary concepts - Evolutionary computation and behavioral patterns inspired by biology - Swarm calculus) in the case of of water supply systems and their subsystems, with exemplification in the case of a model network (Scheme of the network distribution in Hanoi), taking into account water quality (its treatment with chlorine). "

scholarly journals APPLICATION OF DEPOSITION BACK IN THE AQUAPONIC SYSTEM IN REDUCING NH3 IN CULTIVATION Tilapia (Oreochromis niloticus)

2021 ◽  
Vol 26 (2) ◽  
pp. 131
Author(s):  
Hotlan Albert Adventus Sitompul ◽  
Eko Efendi ◽  
Agus Setyawan
Keyword(s):  
Oreochromis Niloticus ◽  
Water Exchange ◽  
Fish Farming ◽  
Fish Culture ◽  
Quality Of Water ◽  
Aquaculture Waste

The success of a culture depends on the quantity and quality of water used in fish culture without water exchange, the concentration of aquaculture waste such as ammonia (NH3) will increase very rapidly and is toxic to the cultivated organism. One of the innovations applied in fish farming is integrating plants through an aquaponics system. This study aims to determine the effect of using a settling tub in reducing ammonia waste (NH3) and growth in tilapia aquaculture using an aquaponic tidal system. The size of the initial tilapia seeds used is 3-4 cm. There are two treatments used, without settling tub (A) and addition of settling tub (B) with three replications. However, the results showed no significant differences (P>0.05) between treatments for all parameters observed. It is necessary to carry out further research on different fish and plants to see the optimization in reducing ammonia waste (NH3).

scholarly journals QUALITY OF WATER IN THE MAIN CHANNEL OF THE KAKHOVKA IRRIGATION SYSTEM

2019 ◽  
pp. 24-29
Author(s):  
L. Khokhlova ◽  
D. Lukashov
Keyword(s):  
Irrigation System ◽  
Climatic Conditions ◽  
Main Channel ◽  
Anthropogenic Sources ◽  
Annual Reports ◽  
Vegetative Period ◽  
Normative Documents ◽  
Quality Of Water

The physical-geographical and climatic conditions of the territories of the steppe zone of Ukraine, where the Kakhovka irrigation system is constructed, is considered. The role of the Kakhovka main channel in increasing the volumes of production of agricultural products in the steppe areas, intensification of all branches of agriculture and increasing the fertility of the land under irrigation conditions are determined. The volumes of water use for irrigation by agricultural producers during the vegetative period have been analyzed. The normative documents regulating the quality of water for irrigation by agronomic and environmental criteria are considered. The results of the analysis of the chemical composition of the water of the Kakhovka main channel within the limits of the Kherson and Zaporizhzhia oblasts, Kakhovsky reservoir, in the area of the location of the Main Pumping Station, for the period 2015-2017, are presented, an environmental assessment of the quality of water used for irrigation and drinking needs was conducted. Having analyzed the materials of scientific literature and annual reports of regional departments of ecology and natural resources, the main anthropogenic sources of pollution of hydro-amelioration objects have been identified. Provided recommendations for preventing the introduction of pollutants into reclamation facilities and improving the quality of water for irrigation and drinking purposes. The possible consequences of the action of pollutants on hydrobiocenoses and the aqueous medium as a whole are determined. Also established the role of hydrobiots in the processes of self-clearing of the water from pollutants.

Surse punctiforme semnificative de poluare cu nutrienți a râurilor mici din subbazinul hidrografic Raut

2019 ◽  
Author(s):  
Vladimir Mogîldea ◽  
◽  
Iurie Bejan ◽  
Keyword(s):  
Surface Waters ◽  
Nutrient Content ◽  
Growth Potential ◽  
Water Bodies ◽  
Physico Chemical ◽  
Algae Growth ◽  
Surface Leakage ◽  
Basin Area

The research from surface waters allowed the assessment of the distribution of ammonium ions, nitrates and phosphates in different water bodies (Răut River and its tributaries r. Copăceanca, r. Cubolta, r. Căinari, r. Cogâlnic, r. Ciuluc, r. Vatici, r. Cula, ponds, wells, springs), the role of human agglomerations in the pollution of water bodies with nutrients, from punctual sources. In the Vatici basin area the quality of surface leakage caused by precipitation and their influence on the physico-chemical parameters of the river water, from the springs to the spill in Răut river, was investigated. Using the integrative indicator - Algae Growth Potential in Different Water Bodies – allowed differentiation between the total nutrient content (determined by chemical analysis) and the nutrients available for the growth of hydrobionds, and characterizing the trophic status of the water body.

scholarly journals The critical role of leadership in the New Zealand state sector

2007 ◽  
Vol 3 (2) ◽  
Author(s):  
Kerry McDonald
Keyword(s):  
New Zealand ◽  
Central Government ◽  
Critical Role ◽  
Social Benefits ◽  
Remedial Action ◽  
State Sector ◽  
Central Government Agencies ◽  
And Performance

If New Zealand is to be able to arrest its steadily deteriorating economic performance and position compared with many other countries, particularly Australia, one thing it must do urgently is to radically improve the quality of leadership and performance within its central government agencies. Substantial economic and social benefits will flow from such remedial action, but high costs will be paid if it is not taken.

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