scholarly journals UPTAKE OF DIFFERENT DYES BY TWO NEW STRAINS OF MICROALGAL DRY BIOMASS

2021 ◽  
Vol 52 (1) ◽  
pp. 48-62
Author(s):  
P. ` M. Abdulkareem ◽  
S. S. Anwer
Keyword(s):  
Water Pollution ◽  
Small Proportion ◽  
Agitation Speed ◽  
Batch Studies ◽  
Dry Biomass ◽  
Wastewater Pollution ◽  
Spirulina Subsalsa

The control of wastewater pollution has become of increasing importance in recent years. The release of dyes into the environment constitutes only a small proportion of water pollution, but dyes are visible in small quantities due to their brilliance. In this study Spirulina subsalsa and Scenedesmus ecornis microalgae isolated from Chnarok and Taq-Taq Koya city and  its ability to uptake different dyes. Batch studies were conducted at separate biosorbent doses ,dye concentration, pH, temperature and agitation speed. Optimum adsorption of dyes by Spirulina subsalsa and Scenedesmus ecornis showed in reactive yellow (89.3%, 90.4%) respectively at 50 mg l-1, 30℃, pH 8, 150 rpm, dosage 1.2 g ml-1.

Wastewater Pollution From the Industries

2019 ◽  
pp. 98-113
Author(s):  
Tabassum Ara ◽  
Rafia Bashir ◽  
Hamida-Tun-Nisa Chisti ◽  
Tauseef Ahmad Rangreez
Keyword(s):  
Water Pollution ◽  
Natural Resources ◽  
Fresh Water ◽  
Industrial Products ◽  
The Earth ◽  
Wastewater Pollution ◽  
And Control ◽  
Control Water

Water is one of the most precious natural resources of the earth, without which the living beings cannot survive. Water is important for the sustenance of human civilization. Man uses water for many purposes like drinking, cleaning, washing, bathing, heating, rearing cattle, and farming. Mankind, for the bettering of themselves and society, advanced towards industries and industrial products. But this progress towards industrialization not only utilizes huge amounts of fresh water, but returns water to the environment with pollutants, which changes its natural quality. Thus, mankind is heading towards misery, instead of comfort. Effective measures need to be taken to prevent, minimize, and control water pollution before it becomes too late.

Present State and Future Direction of Countermeasures for Pollution from Domestic Wastewater in Japan

1986 ◽  
Vol 18 (7-8) ◽  
pp. 1-8 ◽  
Author(s):  
Masahiro Fujiwara
Keyword(s):  
Water Pollution ◽  
Present State ◽  
Urban Areas ◽  
Domestic Wastewater ◽  
Water Bodies ◽  
Pollution Load ◽  
Grey Water ◽  
Wastewater Pollution ◽  
Current Water ◽  
Future Direction

Japan is poorly provided with sewerage facilities especially in non-urban areas. Of domestic wastewater not discharged into the sewage system only night soil is treated, and the remaining domestic wastewater (grey water) is discharged untreated into public water bodies. Regarding the current water pollution load, the proportion of domestic wastewater, especially that of grey water, is increasing. It is not clear, however, who is legally responsible for grey water, and there is little interest in treatment of such grey water. Thus, the development of domestic wastewater pollution countermeasures will be an important task. This paper classifies the systems popularly used in Japan to treat domestic wastewater into several types, and describes the administrative regulations, and Government and other assistance, relating to them. Also, some promising systems for the treatment of domestic wastewater are presented as examples. Finally, future policies on domestic wastewater pollution countermeasures are discussed.

Influence of Gigantochloa ligulata Nutrient on Lactobacillus delbrueckii for Textile Wastewater Decolorization

2015 ◽  
Vol 1113 ◽  
pp. 511-517
Author(s):  
R. Nur Hazirah ◽  
C.R. Nurhaslina ◽  
M. Mirza Azri ◽  
A. Noor Syafiqah
Keyword(s):  
Water Pollution ◽  
Bladder Cancer ◽  
Lactic Acid ◽  
Textile Wastewater ◽  
Agitation Speed ◽  
Lactobacillus Delbrueckii ◽  
Biological Research ◽  
Splenic Tumor ◽  
The Impact ◽  
Maximum Decolorization

Water pollution due to the discharges of textile wastewater without treatment is the most concern problem identified. This reduces the degree penetration of sunlight into the water. It causes some human health problem such as bladder cancer, liver cancer and splenic tumor. The biological research using Lactobacillus bacteria was developed to reduce the environment problems. This research was studied on the impact of Lactobacillus delbrueckii on decolorization of textile wastewater enhanced by Gigantochloa ligulata nutrient. This nutrient contains high protein, mineral, moisture and carbohydrate such as fructose, glucose and sucrose. Those nutrients are used by Lactobacillus species to produce lactic acid, which simultaneously help in decolorizing textile wastewater. The effect studies; Lactobacillus delbrueckii dosage (4, 7, 10 mL/mL), agitation speed (1, 75.5, 150 rpm) and dye concentration (0.1, 0.55, 1.0 mL/mL) were performed to determine the rate of decolorization for every 24 hours. The result obtained show the maximum decolorization rate, 65.30% occurs at 7.66 mL of Lactobacillus dosage and 0.49 mL/mL of dye concentration with 64.20 rpm. It can be concluded that Gigantochloa ligulata nutrient has potential in enhancing Lactobacillus species to decolorize of textile wastewater.

scholarly journals Sustainable development solutions and complex it means for evaluation of water pollution processes

2019 ◽  
Author(s):  
Dalė Dzemydienė
Keyword(s):  
Water Pollution ◽  
Baltic Sea ◽  
Public Administration ◽  
Layered System ◽  
Common Goal ◽  
The Baltic Sea ◽  
Wastewater Pollution ◽  
The Common ◽  
The Baltic ◽  
Practical Implications

The purpose of this research is the developing of decision support system (DSS) by integrating all working information systems (ISS) for wastewater pollution evaluation processes by contributing in achieving the common goal of the Helsinki Convention (HELCOM) for countries to preserve and restore the ecosystems of the Baltic Sea. Research methodology based on design approach for the development of DSS as a multi-layered system with the multi–componential, interoperable structure of databases (DBs), data warehouses, and IS, which are under the responsibility of different public administration institutions. Findings – presented results on integration of information sources and collaboration workflows help in searching of suitable indicators for revealing the situations of water pollution from wastewater bodies and objects in districts of Lithuania and the effluxes in the Baltic Sea. Research limitations – the complexity of pollution processes and the multi-layered structure of distributed ISs under different responsibilities identify problems and requirements for adequate DSS working online. Practical implications – the results will help for influencing the decisions provided for responsible institutions of Lithuania and other members of the HELCOM, responsible for the protection of the marine environment of the Baltic Sea. Originality/Value intend to assess the sustainability requirements in the wastewater sector, by providing integrated collaboration of ISs.

Policy, Law and Implementation of Industrial Wastewater Pollution Control

1991 ◽  
Vol 24 (1) ◽  
pp. 5-13 ◽  
Author(s):  
Paritosh C. Tyagi
Keyword(s):  
Water Pollution ◽  
Pollution Control ◽  
Industrial Wastewater ◽  
Organisational Structure ◽  
History Of ◽  
Wastewater Pollution ◽  
Polluter Pays Principle ◽  
And Control ◽  
Legislative Measures ◽  
Better Than

The paper is based on the experience in India, The policy of industrial wastewater pollution control is summarised. It is essentially based on the polluter pays principle. The corner-stones of the policy for setting standards are environmental protection, harmony with development needs, public participation and implementability. Prevention is accepted as better than cure. Industries are classified with regard to their potential for pollution. The history of legislative measures for control of water pollution is briefly described and the effectiveness of legislation has been critically examined. The organisational structure of the statutory boards at the Centre and States is described and steps taken for assessment and control of pollution caused by industrial wastewater have been enumerated.

scholarly journals Industrial Water Pollution Discharge Taxes in China: A Multi-Sector Dynamic Analysis

Water ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1742 ◽  
Author(s):  
Xiaolin Guo ◽  
Mun Sing Ho ◽  
Liangzhi You ◽  
Jing Cao ◽  
Yu Fang ◽  
...  
Keyword(s):  
Water Pollution ◽  
Computable General Equilibrium ◽  
Policy Reforms ◽  
Firm Level ◽  
Tax Rate ◽  
Industrial Sectors ◽  
Wastewater Pollution ◽  
Long Term Impact ◽  
The Impact

We explore how water pollution policy reforms in China could reduce industrial wastewater pollution with minimum adverse impact on GDP growth. We use a multi-sector dynamic Computable General Equilibrium (CGE) model, jointly developed by Harvard University and Tsinghua University, to examine the long-term impact of pollution taxes. A firm-level dataset of wastewater and COD discharge is compiled and aggregated to provide COD-intensities for 22 industrial sectors. We simulated the impact of 4 different sets of Pigovian taxes on the output of these industrial sectors, where the tax rate depends on the COD-output intensity. In the baseline low rate of COD tax, COD discharge is projected to rise from 36 million tons in 2018 to 48 million in 2030, while GDP grows at 6.9% per year. We find that raising the COD tax by 8 times will lower COD discharge by 1.6% by 2030, while a high 20-times tax will cut it by 4.0%. The most COD-intensive sectors—textile goods, apparel, and food products—have the biggest reduction in output and emissions. The additional tax revenue is recycled by cutting existing taxes, including taxes on profits, leading to higher investment. This shift from consumption to investment leads to a slightly higher GDP over time.

scholarly journals Associated Effects and Efficiency Evaluation between Wastewater Pollution and Water Disease Based on the Dynamic Two-Stage DEA Model

Healthcare ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 279
Author(s):  
Ya-nan Sun ◽  
Fang-rong Ren ◽  
Jia-wei Liu ◽  
Nai-xin Shi
Keyword(s):  
Water Pollution ◽  
Wastewater Treatment ◽  
Dynamic Network ◽  
Total Efficiency ◽  
Eastern Region ◽  
Efficiency Evaluation ◽  
Dynamic Network Model ◽  
Wastewater Pollution ◽  
Water Supply And Treatment ◽  
High Level

The lack of basic water supply and treatment facilities during China’s urbanization and industrialization process has resulted in a large amount of wastewater pollution, with the most serious water diseases being water-borne endemic fluorosis and arsenic poisoning, which have affected more than 20 million people. This research therefore uses the improved modified undesirable dynamic network model to analyze data of 31 provincial administrative regions to focus on the associated effects and efficiency evaluation between wastewater pollution and water disease in China. The results show that the efficiency of water pollution disease in all four regions of the country and the total efficiency in the east, west, and central regions all show a decreasing trend, while the efficiency scores and rankings of all provinces and cities within the region fluctuate greatly. The eastern region with the most developed economy has the best overall performance, with higher efficiency in water consumption and water disease control. However, the efficiency of wastewater treatment in northeast China is stable and better. Given the high level of the nation’s economic development and the results of efficiency in water pollution and water diseases, improving the efficiency and quality of wastewater treatment in China is regarded as an important factor for achieving the strategic goal of green growth.

Cytoplasmic Tubules in Cells Infected with Laryngotracheitis Virus

1969 ◽  
Vol 27 ◽  
pp. 376-377
Author(s):  
A. M. Watrach
Keyword(s):  
Tissue Culture ◽  
Small Proportion ◽  
Chicken Embryo ◽  
Culture Cells ◽  
Tissue Culture Cells ◽  
Morphologic Characteristics ◽  
Infectious Laryngotracheitis ◽  
Laryngotracheitis Virus ◽  
In Cells

During a study of the development of infectious laryngotracheitis (LT) virus in tissue culture cells, unusual tubular formations were found in the cytoplasm of a small proportion of the affected cells. It is the purpose of this report to describe the morphologic characteristics of the tubules and to discuss their possible association with the development of virus.The source and maintenance of the strain of LT virus have been described. Prior to this study, the virus was passed several times in chicken embryo kidney (CEK) tissue culture cells.

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