Influence of salinity and organic matter on the toxicity of Cu to a brackish water and marine clone of the red macroalga Ceramium tenuicorne

The chromophoric dissolved organic matter (CDOM) of marine (MZ) and brackish water (BZ) zones of Ria de Aveiro showed different spectral characteristics and susceptibility to photochemical alterations, reflecting the different amounts and prevailing sources of organic matter.

Download Full-text

Major differences in dissolved organic matter characteristics and bacterial processing over an extensive brackish water gradient, the Baltic Sea

Marine Chemistry ◽

10.1016/j.marchem.2018.01.010 ◽

2018 ◽

Vol 202 ◽

pp. 27-36 ◽

Cited By ~ 7

Author(s):

Owen F. Rowe ◽

Julie Dinasquet ◽

Joanna Paczkowska ◽

Daniela Figueroa ◽

Lasse Riemann ◽

...

Keyword(s):

Organic Matter ◽

Dissolved Organic Matter ◽

Baltic Sea ◽

Brackish Water ◽

The Baltic Sea ◽

Water Gradient ◽

The Baltic

Download Full-text

Studi Pendahuluan Pengolahan Air Payau Menjadi Air Bersih Dengan Metode Kombinasi Elektrokoagulasi Dan Adsorpsi Menggunakan Karbosil

Jurnal Sylva Lestari ◽

10.23960/jsl121-10 ◽

2014 ◽

Vol 2 (1) ◽

pp. 1

Author(s):

Eny Heriani R.N. ◽

Wasinton Simanjuntak ◽

Ilim .

Keyword(s):

Electrical Conductivity ◽

Organic Matter ◽

Natural Organic Matter ◽

Brackish Water ◽

Adsorption Process ◽

Organic Matter Content ◽

Matter Content ◽

Homogeneous Surface ◽

Pyrolysis Method ◽

Electrocoagulation Process

This study was carried out to investigate treatment of brackish water using a combination of electrocoagulation and adsorption using carbosil prepared from rice husk with pyrolysis method. Electrocoagulation was applied with the aim to remove natural organic matter in the sample, using aluminim as electrodes, with the particular purpose to study the effect of potenstials.For this purpose, electrocoagulation experiments were conducted at potential of 4, 6, and 8 volt at fixed contact time of 60 minutes.The performance of the method was defined in term of absorbance reduction at the wavelengths of 254 and 285 nm, since the absorbance at these two wavelenghts was found to correlate well with the amount of organic matter in the water samples. The treated water was then subjected to adsorption process at different contac times of 5. 10, and 15 minutes, and the performance of the process was evaluated in term of electrical conductivity reduction.The results obtained indicate that for electrocoagulation process, the higest reduction of natural organic matter content was achieved using potential of 8 volt, and adsorption porcess of 15 minutes was found to result in reduction of electrical conductivity from 15.13 mS/cm to 10.10 mS/cm.Characterization of the carbosil using SEM/EDX technique revealed that the carbosil has practically homogeneous surface and able to adsorb salt and several other elements from the brackish water. Key words : adsorption, brackish water, carbosil, electrocoagulation

Download Full-text

Impact of soil amendments on macronutrients (NA, K, CA, MG, N and P) contents of rice grain under subsurface drainage in salt affected soil

Dhaka University Journal of Biological Sciences ◽

10.3329/dujbs.v19i1.8938 ◽

1970 ◽

Vol 19 (1) ◽

pp. 1-11

Author(s):

R Mandal ◽

AC Aich

Keyword(s):

Organic Matter ◽

Brackish Water ◽

Saline Soil ◽

Soil Amendments ◽

Subsurface Drainage ◽

Cow Dung ◽

Rice Grain ◽

Stunted Growth ◽

P Content ◽

Irrigation Effect

Impact of soil amendments and brackish water irrigation on grain of three cultivars of rice provided with subsurface drained and non-drained conditions in saline soil was investigated. Contents of Na, Mg, N and P of rice grain increased significantly with increasing brackishness of irrigation water (ECiw 0.7 to 5.0 dS/m) irrespective of drainage condition. The content of Na was found much lower in grain provided with subsurface drainage as compared with non drained ones irrespective of treatments and varieties. However, a reverse trend was observed in case of K. Addition of both lime and gypsum alone caused a decrease in Na and an insignificant increase in Ca concentration at all levels of brackish water irrigation. Effect of lime and gypsum in presence of organic matter did not influence very much in Na, Ca and Mg concentrations in all the cultivars. The contents of N and P increased with increasing levels of salinity might be due to stunted growth of plant caused by excessive Na. Lime and gypsum alone caused a decline in the P content whereas organic matter alone helped to increase the same in grain of rice. Application of lime and gypsum along with organic matter failed to respond in P content significantly in grain of rice in all grades of brackish water whether provided with subsurface drainage or not. In both the sets, cow-dung influenced better performance than straw in mineral nutrition of rice grain.Key words: Soil amendment, Rice grain, Macronutrients, Subsurface drainage, Salt affected soilDOI: http://dx.doi.org/10.3329/dujbs.v19i1.8938 DUJBS 2010; 19(1): 1-11

Download Full-text

Deposition and Transportation Characterisrics of Organic Matter in Brackish Water Region

Journal of Japan Society of Civil Engineers Ser B2 (Coastal Engineering) ◽

10.2208/kaigan.66.1091 ◽

2010 ◽

Vol 66 (1) ◽

pp. 1091-1095

Author(s):

Masami ABE ◽

Katsuaki KOMAI ◽

Masataka IMAGAWA ◽

Tadashi HIBINO

Keyword(s):

Organic Matter ◽

Brackish Water ◽

Water Region

Download Full-text

REMOVAL OF NATURAL ORGANIC MATTER USING ELECTROCOAGULATION AS A FIRST STEP FOR DESALINATION OF BRACKISH WATER

Indonesian Journal of Chemistry ◽

10.22146/ijc.21428 ◽

2011 ◽

Vol 11 (1) ◽

pp. 103-107

Author(s):

Wasinton Simanjuntak ◽

Irwan Ginting ◽

Kamisah D. Pandiangan

Keyword(s):

Organic Matter ◽

Water Sample ◽

Natural Organic Matter ◽

Removal Efficiency ◽

Brackish Water ◽

Contact Time ◽

Potable Water ◽

Sea Water ◽

Sampling Site ◽

Treatment Efficiency

In the present study, electrocoagulation method was employed to remove natural organic matter from brackish water. This study explores the potential of brackish water as a source of potable water. Two electrochemical variables, potential and contact time, were tested to determine their effect on the treatment efficiency defined in terms of the reduction of the absorbance at the wavelength of 254 nm (A254). Both potential and contact time were found to influence the removal efficiency of the method, and the best result was obtained from the experiment using the potential of 8 V and contact time of 60 min, resulting in 69.5% reduction of the absorbance. Very clean treated water was produced with much lower conductivity (12.06 mS/cm) as compared to that obtained for the sea water sample from a location near to the sampling site (133.9 mS/cm).

Download Full-text