Reduction of Salinity from sea water using air micronanobubbles and graphene in laboratory scale

The objective of the research was to reduce the salinity of the waters of San Pedro, Lurín, Peru. The proposed method was a pre-treatment with Micro-Nanobubbles (MNBs) of air at different times and a post-treatment with graphene at different concentrations, this was called Grafenano. The first stage was to first pass the samples collected by the MNBs generator, which allowed to reduce the physical and chemical parameters; The second stage consisted of filtering the water treated with MNBs using graphene in three proportions 5 g, 10 g and 15 g, which allowed to reduce the concentration of dissolved salts. The salinity of the seawater was determined as well as the physical-chemical parameters before and after the treatment. The air micronabubbles and graphene were characterized. The results obtained were: removal of Turbidity in 96% (from 27.57 NTU to 1.06 NTU), conductivity in 65% (from 49.01 mS/cm to 17.04 mS/cm), of BOD5 in 70% (from 2.42 mg/L to 0.72 mg/L) and a salt removal of 47% (from 34.46 g/L to 18.41 g/L).

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The Diversity of Makrozoobenthos as Bio-Indicators of Water Quality of the River Kundur District Labuhanbatu

Budapest International Research and Critics Institute (BIRCI-Journal) Humanities and Social Sciences ◽

10.33258/birci.v4i1.1732 ◽

2021 ◽

Vol 4 (1) ◽

pp. 1027-1033

Author(s):

Winarti Winarti ◽

Arman Harahap

Keyword(s):

Total Abundance ◽

Chemical Parameters ◽

Observation Station ◽

Physical Chemical ◽

Physico Chemical ◽

Physical And Chemical Parameters ◽

The Individual ◽

Physical And Chemical ◽

Chemical Water

Macrozoobenthos used as a bioindicator of the waters, this happens because of the nature of the benthos which has mpergerakan low so it got a lot of influence from the environment. This study aims to determine the condition of the river Kundur with a view the community structure of macrozoobenthos which include: species composition, abundance, diversity, uniformity and dominance as well as the physical and chemical parameters of water as a paremeter supporters. Based on the results of observations, macrozoobenthos were found during the study in the river Kundur consists of 3 phylum, 4 classes, 17 family with 11 species. The composition of the class of macrozoobenthos in the whole of the observation station consists of a Gastropod (37%), Insecta (23%), Malacostraca (20%), Polychaeta (10%) dan Malacostraca (20%). The value of an abundance ranged from 325,7 - 3309,6 ind/m3. With the value of the total abundance at Station I which is equal to 3690,1 ind/m3, Station II 3723,1 ind/m3, Station III 3692,3 ind/m3 can be categorized diversity are light polluted with the value of the index of uniformity (E) that describes the spread of the individual tends to be uniform or relatively the same. While the condition of the physical-chemical parameters and the substrate bottom of the river Kundur in general has a range of relatively homogeneous, spread evenly throughout the observation stations and still be able to support life macrozoobenthos. To the results of measurements of the parameters of physico-chemical water and substrate in the river kundur in general has a range of relatively homogeneous in the whole observation stations and still be able to support the life of the macrozoobenthos.

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The Influence of Water Physical Chemical Quality on the Zooplankton Community Structure in the Upstream Citarum River of West Java Province

Asian Journal of Fisheries and Aquatic Research ◽

10.9734/ajfar/2021/v13i130258 ◽

2021 ◽

pp. 37-47

Author(s):

Seldatia Syifani Alhafidzoh ◽

Zahidah Hasan ◽

. Sunarto ◽

Heti Herawati

Keyword(s):

Diversity Index ◽

Zooplankton Community ◽

Chemical Quality ◽

Chemical Parameters ◽

Dominance Index ◽

West Java ◽

Zooplankton Community Structure ◽

Physical Chemical ◽

Physical And Chemical Parameters ◽

Physical And Chemical

The Citarum River is the longest river in West Java Province which is used for various human activities to produce a load of waste input into water bodies which cause changes in the physical and chemical parameters of the waters that will affect the life of aquatic organisms that live in it, one of which is zooplankton. Zooplankton can be used as a water bioindicator because it has a high level of sensitivity to pollution, especially in freshwater. The purpose of this research is to determine the physical-chemical quality of the water in the Citarum River and its influence on the structure of the zooplankton community in this environment. The research was carried out from August 2020 until October 2020 with a purposive sampling method. Sampling was carried out at 5 stations with 6 repetitions every 1 week. The parameters observed were physical and chemical parameters of the waters, an abundance of zooplankton, diversity index, and dominance index. The results showed that the composition of zooplankton in the Upstream Citarum River was 15 genus consisting of 2 phyla. The abundance of zooplankton obtained ranged from 21 - 51 individuals/L. The Simpson diversity index (D) obtained a range between 0.59 - 0.73 for the high category. The dominance index obtained ranges from 0.27 to 0.41 for the low category. Dissolved oxygen and pH are the parameters that most influence the presence of most of the identified zooplankton orders.

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Indicators of the environmental state of the Bilecko Jezero Lake

Archives of Biological Sciences ◽

10.2298/abs1103775d ◽

2011 ◽

Vol 63 (3) ◽

pp. 775-783

Author(s):

R. Dekic ◽

Svjetlana Lolic ◽

R. Gnjato ◽

G. Trbic ◽

O. Gnjato ◽

...

Keyword(s):

Water Quality ◽

Chemical Analyses ◽

Fecal Material ◽

Chemical Parameters ◽

Lake Water Quality ◽

Physical Chemical ◽

Physical And Chemical Parameters ◽

Microbiological Parameters ◽

Physical And Chemical ◽

Parameter Values

The research refers to the physical, chemical and microbiological parameters of the Bilecko Jezero Lake water quality. The monitoring of physical and chemical parameters and their interaction with other parameters helps estimate the water quality and any possible changes. Some parameter values and their alteration directly affect the water life. The research was performed at three sites: the Grancarevo watergate, the Trebisnjica River fountain and Orah in the period 2006-2009, and the results of conducted physical and chemical analyses indicate that the water quality was satisfactory, albeit with certain deviations. Bacteriological analyses showed that the water of Bileca accumulation, especially at the Izvor site, was burdened with fecal material.

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Diel microdistribution of physical and chemical parameters within the dense Chara bed and their impact on zooplankton

Biologia ◽

10.2478/s11756-007-0080-x ◽

2007 ◽

Vol 62 (4) ◽

Cited By ~ 11

Author(s):

Natalia Kuczyńska-Kippen ◽

Piotr Klimaszyk

Keyword(s):

Dissolved Oxygen ◽

Open Water ◽

Chemical Parameters ◽

Physical Chemical ◽

Physical And Chemical Parameters ◽

Diurnal Distribution ◽

Main Components ◽

Zooplankton Communities ◽

Physical And Chemical ◽

Different Parts

AbstractResearch on the diurnal distribution of physical and chemical parameters within a single macrophyte bed was carried out on the shallow Wielkowiejskie Lake (Poland). A non-parametric statistical analysis was used to compare the water quality features in different parts of a Chara hispida habitat including the middle, both edge (vertical and horizontal) parts of a macrophyte plant, and the open water next to-and above the stonewort stand.The obtained results showed a differentiation in the physical-chemical parameters of the environmental conditions within the Chara hispida stand. The greatest variability was found for dissolved oxygen. Its lowest concentrations were noted in the central part of the macrophyte stand, irrespective of the sampling time.The zooplankton communities within the examined Chara bed were strongly influenced by the concentration of dissolved oxygen. It was also found that two main components of zooplankton communities (rotifers and cladocerans) had a similar trend in their spatial and diurnal distribution within the stonewort stand.

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SEBARAN KUALITAS AIR LAUT DI PERAIRAN SEKITAR PLTU TELUK SEPANG KOTA BENGKULU BERDASARKAN PARAMETER FISIKA-KIMIA

Newton-Maxwell Journal of Physics ◽

10.33369/nmj.v2i1.15256 ◽

2021 ◽

Vol 2 (1) ◽

pp. 27-34

Author(s):

Lizalidiawati Lizalidiawati ◽

Erma Juniarti ◽

Budi Harlianto

Keyword(s):

Sea Water ◽

Negative Impact ◽

Quality Standards ◽

Quality Standard ◽

Marine Biota ◽

Chemical Parameters ◽

Offshore Area ◽

Physical And Chemical Parameters ◽

Physical And Chemical

PLTU Teluk Sepang Bengkulu City produces heat waste dumped back into the sea which affects the quality of the water so that it has a negative impact on marine life. This study aimed to identify the quality of the water around PLTU Teluk Sepang Bengkulu City based on the physical and chemical parameters. The method used was direct measurement at the research location which is carried out at 12 measurement points,i.e 4 points around the outlet area, and 8 points in the off-shore area. The measurement result was compared with seawater quality standard for marine biota based on the Minister of Environment Decree No. 51 of 2004 and was validated by analysis of sea water quality before the PLTU had operated. The result showed that the some parameters met the quality standards for marine biota included DO of 5.62-7.82, pH and turbidity in the offshore area with each value of 7.24-7.86 and 1.68-4.846 NTU. Meanwhile, the parameters which did not meet quality standards include a temperature of 30.62-36 ºC, a salinity of 26.6-30 ‰, pH and turbidity around the outlet area with each value of 6.7-6.88 and 23.25-146.8 NTU. Based on the validation result, it showed that heat waste had a very significant effect on the physical and chemical parameters of the waters, especially on temperature, pH, and turbidity.

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REVISITING THE CONFIRMATION OF THE IDENTITY OF THE CORROSION DESTRUCTION MECHANISM OF ALUMINUM ALLOYS (review) Part 2. Corrosion in sea water

Aviation Materials and Technologies ◽

10.18577/2713-0193-2021-0-1-95-103 ◽

2021 ◽

pp. 95-103

Author(s):

M.G. Abramova ◽

Keyword(s):

Aluminum Alloys ◽

Sea Water ◽

Chemical Parameters ◽

Destruction Mechanism ◽

Physical And Chemical Parameters ◽

Main Factors ◽

Fouling Organisms ◽

Physical And Chemical ◽

Test Objects

The paper presents an overview of studies of the corrosion destruction mechanisms of aluminum alloys in seawater. The main factors that have the greatest impact on corrosion are considered: physical and chemical parameters, the depth of the test objects, as well as the role of biofouling. It has been determined that the parameter of the species composition of the fouling organisms is an important factor in the corrosion of metals in seawater and should be taken into account when identifying the mechanism of corrosion destruction during tests under various conditions.

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Keanekaragaman serangga Ephemeroptera, Plecoptera, dan Trichoptera sebagai bioindikator kualitas perairan di Sungai Jangkok, Nusa Tenggara Barat

Jurnal Entomologi Indonesia ◽

10.5994/jei.14.3.79 ◽

2018 ◽

Vol 14 (3) ◽

pp. 135

Author(s):

Ni Putu Reny Diantari ◽

Hilman Ahyadi ◽

Immy Suci Rohyani ◽

I Wayan Suana

Keyword(s):

Water Quality ◽

Water Temperature ◽

Biological Parameter ◽

Biotic Index ◽

Chemical Parameters ◽

Physical Chemical ◽

Physical And Chemical Parameters ◽

Sampling Points ◽

Physical And Chemical

<p>The existence of Ephemeroptera, Plecoptera, and Trichoptera (EPT) in a body of water can be used as indicators of the quality of the waters. The aim of this study were 1) to know the diversity of EPT insects in Jangkok River, Lombok, West Nusa Tenggara, 2) determine the water quality of Jangkok River based on family biotic index (FBI), and 3) to know the effect of physical, chemical, and biological of environment parameters on the presence of EPT insects. Sampling was conducted in Jangkok River, Lombok, West Nusa Tenggara, in the dry season of July 2016. EPT groups insects were taken using water nets and eckman grab in 22 sampling points that was randomly determined in systematic random sampling. Data of physical, chemical, and biology of waters were also taken in these sampling points. Water quality is determined by the score of FBI, and the multiple correlation analysis to determine the relationship between physical and chemical parameters with the presence of EPT. Biological parameter was analyzed descriptively. The influence of biological parameter was determined by descriptive analysis. The study found 902 individuals of EPT belonging to 12 family and 12 genera. In the upstream we found 788 individuals (12 family and 12 genus), in the middlestream found 114 individuals (10 family and 10 genus), while in the downstream the EPT was absent. From the seven physical and chemical parameters of waters tested, only water temperature has significant correlation with the presence of EPT. The differences of water temperature in these area were caused by the covering and heterogeneity of the vegetation in the river side in each area. FBI score for upstream was 3.6 which indicates that the quality of the waters are very good. In the middlestream, the FBI score was 4.6, and it was categorized as good. In the downstream, results of the FBI get infinite value that entered the category as very bad.</p>

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