TROUBLE SHOOTING ISSUES OF BIODEGRADATION OF ORGANIC POLLUTANTS IN TROPICAL MARINE ENVIRONMENT

2016 ◽  
Vol 2 (1) ◽  
pp. 50
Author(s):  
Dr Shivani S Dhage ◽  
Dr D V Prabhu ◽  
Dr Prakash S Kelkar
Keyword(s):  
Organic Waste ◽  
Marine Pollution ◽  
Algal Growth ◽  
Marine Water ◽  
Systematic Evaluation ◽  
Preliminary Treatment ◽  
Domestic Waste ◽  
Aquatic Life ◽  
Coastal System ◽  
The Impact

Marine pollution occurs due to the entry of organized or unorganized, point or non – point land based releases of industrial, agricultural and residential waste. Biodegradable organic waste rich in microorganisms lead to potentially harmful effects and alter oxygen cycle, where as excessive inputs of nutrients like nitrogen and phosphorus stimulate algal growth leading to eutrophication.Thermodynamics play an important role in chemicals reactions occurring in ocean during degradation of organic waste. The rate of reactions is altered due to temperature and high salinities. This aspect is very crucial while predicting the self purification capacity of the water body. Adequate experimental work pertaining to the order of reaction and thermodynamic constants is essential to prove the basis of the predicted assimilative capacity of the system.In Mumbai, huge quantity of domestic waste is generated. Due to land restrictions, complete treatment of tertiary level is not feasible. The Municipal administrators take the advantage of coastal location and discharge this waste into the ocean with just meagre preliminary treatment. The disposal practices are advanced and well planned but still expected purification or dilution is not achieved in the near shore region. This has resulted in spoiling the impact zone of coastal areas creating stress on the living biota and non compliance of the marine water quality standards.Three major issues in coastal system, viz. Operation and control of waste discharges, degradation patterns of pollutants and  self purification capacity needs systematic  evaluation to  maintain favorable conditions for aquatic life. Hence it is essential to study the reaction kinetics and thermodynamic behaviour of the biodegradation of carbonaceous waste occurring under highly saline conditions. Experiments are conducted to confirm the kinetics and thermodynamics of biodegradation of domestic waste water into marine water at variable salinities. The paper presents the findings of kinetic behaviour particularly the values for rate of reaction, Activation energy and related constants.

scholarly journals Physicochemical Parameters of Gomati River at Lucknow in Uttar Pradesh (India)

2021 ◽  
Vol 9 (VII) ◽  
pp. 875-886
Author(s):  
Azad Kannaujiya
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
River Water ◽  
Industrial Effluent ◽  
Oxygen Demand ◽  
Total Hardness ◽  
Domestic Waste ◽  
Aquatic Life ◽  
Gomati River ◽  
The Impact

Gomati River originate from Madhoganj Tanda village in Pilibhit district, U.P. it passes through the district of Shahjahanpur, kheri, Hardoi, Sitapur, Janpur and ultimately merge in Ganga. River water is significant for every living organism as well as aquatic life. Water pollution is a major global problem. Modernization and urbanization have polluted the river water and degraded the status. All over the world we are seeing that drain is the main source of water pollution especially for rivers flowing within the city. This drain generally carries industrial effluent, domestic waste, sewage and medicinal waste resulting in poor water quality. Gomati River receives industrial as well as domestic waste from various drains of Lucknow city. As Gomati river is the only source of surface water near the communities. A total 20 parameters namely Temperature, pH, Turbidity, Conductivity, Total dissolved solids (TDS), Total suspended solids (TSS), Total solids (TS), Dissolved oxygen (DO), Biological oxygen demand (BOD) Chemical oxygen demand (COD), Alkalinity, Total hardness, Calcium as ca, Magnesium as Mg, Chloride, Fluoride, Sulphate as So4, Nickel as Ni, Lead as Pb, and Zinc as Zn where analysed and their variation is discussed to obtain the impact of effluents on water quality. From the result it was found higher than the permissible limit of WHO and BIS.

A Strategy for Design of Marine Pollution Monitoring Studies

1986 ◽  
Vol 18 (4-5) ◽  
pp. 15-26 ◽  
Author(s):  
D. A. Segar ◽  
E. Stamman
Keyword(s):  
Information Needs ◽  
Marine Pollution ◽  
Monitoring Program ◽  
Pollution Monitoring ◽  
Systematic Evaluation ◽  
Management Information ◽  
Different Types ◽  
Management Context ◽  
Definition Of ◽  
Scientific Testing

Most historical marine pollution monitoring has proven useless in a management context. A strategy for development of effective marine pollution monitoring programs is outlined. This strategy is based on the following steps: 1) systematic evaluation of the management information needs, 2) identification of the hypothetical impacts associated with those management concerns, and 3) investigation of the feasibility of monitoring those effects such that the existence, or absence, of a specified level of effects can be established in a statistically-valid manner. There are two fundamentally different types of monitoring program: site-specific and regional. These two types of program differ markedly in scope and approach when designed through application of this strategy. The strategy requires development of null hypotheses which address management concerns and which are amenable to scientific testing. In order for the program to be successful, the null hypotheses selected for inclusion in a marine pollution monitoring program must address levels of effect which are predefined to be environmentally significant. The definition of environmentally significant effect levels is a difficult process which must be primarily the responsibility of the managerial community.

scholarly journals Potential and limitations of finite element modelling in assessing structural integrity of coralline algae under future global change

2015 ◽  
Vol 12 (19) ◽  
pp. 5871-5883 ◽  
Author(s):  
L. A. Melbourne ◽  
J. Griffin ◽  
D. N. Schmidt ◽  
E. J. Rayfield
Keyword(s):  
Climate Change ◽  
Finite Element ◽  
Structural Integrity ◽  
Geometric Model ◽  
Algal Growth ◽  
Coralline Algae ◽  
Rocky Shores ◽  
Element Analysis ◽  
Scan Data ◽  
The Impact

Abstract. Coralline algae are important habitat formers found on all rocky shores. While the impact of future ocean acidification on the physiological performance of the species has been well studied, little research has focused on potential changes in structural integrity in response to climate change. A previous study using 2-D Finite Element Analysis (FEA) suggested increased vulnerability to fracture (by wave action or boring) in algae grown under high CO2 conditions. To assess how realistically 2-D simplified models represent structural performance, a series of increasingly biologically accurate 3-D FE models that represent different aspects of coralline algal growth were developed. Simplified geometric 3-D models of the genus Lithothamnion were compared to models created from computed tomography (CT) scan data of the same genus. The biologically accurate model and the simplified geometric model representing individual cells had similar average stresses and stress distributions, emphasising the importance of the cell walls in dissipating the stress throughout the structure. In contrast models without the accurate representation of the cell geometry resulted in larger stress and strain results. Our more complex 3-D model reiterated the potential of climate change to diminish the structural integrity of the organism. This suggests that under future environmental conditions the weakening of the coralline algal skeleton along with increased external pressures (wave and bioerosion) may negatively influence the ability for coralline algae to maintain a habitat able to sustain high levels of biodiversity.

Impact of Graphitic Structures in Pyrogenic Carbon on Microbial Reduction of Ferrihydrite

2021 ◽  
Author(s):  
wentao yu ◽  
baoliang chen
Keyword(s):  
Electron Transfer ◽  
Pyrolysis Temperature ◽  
Shewanella Oneidensis ◽  
Exchange Capacity ◽  
Microbial Reduction ◽  
Systematic Evaluation ◽  
Extracellular Electron Transfer ◽  
Pyrogenic Carbon ◽  
The Impact

<p>Pyrogenic carbon plays important roles in microbial reduction of ferrihydrite by shuttling electrons in the extracellular electron transfer (EET) processes. Despite its importance, a full assessment on the impact of graphitic structures in pyrogenic carbon on microbial reduction of ferrihydrite has not been conducted. This study is a systematic evaluation of microbial ferrihydrite reduction by Shewanella oneidensis MR-1 in the presence of pyrogenic carbon with various graphitization extents. The results showed that the rates and extents of microbial ferrihydrite reduction were significantly enhanced in the presence of pyrogenic carbon, and increased with increasing pyrolysis temperature. Combined spectroscopic and electrochemical analyses suggested that the rate of microbial ferrihydrite reduction were dependent on the electrical conductivity of pyrogenic carbon (i.e., graphitization extent), rather than the electron exchange capacity. The key role of graphitic structures in pyrogenic carbon in mediating EET was further evidenced by larger microbial electrolysis current with pyrogenic carbon prepared at higher pyrolysis temperatures. This study provides new insights into the electron transfer in the pyrogenic carbon-mediated microbial reduction of ferrihydrite.</p>

scholarly journals Continuous Monitoring of Turbidity and Conductivity in Wastewater Networks

2015 ◽  
Vol 28 (1) ◽  
pp. 9-17 ◽  
Author(s):  
Thomas Bersinger ◽  
Isabelle Le Hécho ◽  
Gilles Bareille ◽  
Thierry Pigot ◽  
Alexandre Lecomte
Keyword(s):  
Total Nitrogen ◽  
Continuous Monitoring ◽  
Oxygen Demand ◽  
Rain Event ◽  
Aquatic Life ◽  
Pollutant Concentrations ◽  
Rain Events ◽  
The One ◽  
Continuous Estimation ◽  
The Impact

Continuous monitoring of the sanitation network of the urban catchment of Pau (southwest France) has been performed since March 2012 using rain gauges, flowmeters, as well as turbidity and conductivity probes. Good correlations were obtained between turbidity, total suspended solids (TSS) and chemical oxygen demand (COD) on the one hand, and conductivity and total nitrogen on the other hand. This allowed an instantaneous and continuous estimation of pollutant concentrations and fluxes since that date. In the present paper we focused on the results of October 2012, which was characterized by alternating periods of dry and rainy events. Turbidity and conductivity raw data show different trends during the study period depending on the parameter and the rain events. A turbidity peak is observed at the beginning of each rain event but its amplitude varies with the intensity of the rain and the length of the preceding dry weather period. Conversely, conductivity decrease during each rain event implying, that rain water acts as a dilution factor. The behaviour of COD and total nitrogen differ markedly due to their partitioning between the dissolved (total nitrogen) and particulate phases (COD). Daily pollutant fluxes allow a global comprehension and monitoring of the sewer system. Important COD fluxes during a rain event preceded by a long dry weather period highlight the importance of erosion of sedimentary deposits in the sewerage network. During these events, important fluxes are discharged into receiving water leading to the question of the impact on aquatic life. Generally, these results highlight the potential of online monitoring to better understand the behaviour of the sewer network on long or short time scales. This could be a useful tool to manage wastewater treatment.

Biological Aspects of Water Management

1989 ◽  
Vol 21 (2) ◽  
pp. 237-240
Author(s):  
L. G. Cook ◽  
K. M. Harrower ◽  
A. P. Mackey
Keyword(s):  
Waste Water ◽  
Water Management ◽  
Environmental Quality ◽  
Water Bodies ◽  
Recreational Fisheries ◽  
Domestic Waste ◽  
Biological Aspects ◽  
Water Treatments ◽  
The Impact ◽  
Microbiological Aspects

This paper firstly reviews the microbiological aspects of the accumulation of xenobiotic and non-xenobiotic substances from industrial and domestic waste water treatments, with particular reference to hydrocarbons, pesticides and inorganic plant nutrients. The paper goes on to argue that if water bodies are to be used to establish recreational fisheries as well as for water supply and effluent disposal, then the management aim may need to be one of controlled eutrophy. Ramifications of this proposal are considered. The biological aspects of the impact of other recreational and amenity uses of water bodies on water and environmental quality is briefly described. The paper concludes by discussing the training required by potential water managers.

scholarly journals The Perception among Tourists on the Impact of Water Tourism Activities towards Marine Pollution: at Geopark, Pulau Langkawi

2019 ◽  
Vol 9 (2) ◽  
pp. 4595-4598
Keyword(s):  
Correlation Analysis ◽  
Social Science ◽  
Natural Environment ◽  
Marine Pollution ◽  
High Volume ◽  
Environment Pollution ◽  
The Impact

Marine pollution is not a new issue in our country. This could be problem if pollution happened at Kilim Karst Geoforest which is one of the UNESCO Geopark. UNESCO Geopark aims to protect geosites and natural environment. Pollution could exist when it relates to the high volume of tourist that flock to the Kilim Karst Geoforest especially Sungai Kilim. Thus, the increase number of tourists can lead to higher amount of pollution due to water tourism activities. This study is to identify the water tourism activities at Geopark, Pulau Langkawi and to analyse the perception among tourists on the impact of water tourism activities towards marine pollutions. A set of questionnaires was developed, and it was distributed to a total number of 100 respondents that available at Kilim Karst Geopark, Pulau Langkawi. This research was analysed by using Statistical Package for Social Science (SPSS). The findings of the results show water tourisms activities contribute towards marine pollution by using correlation analysis. It more proven when natural environment, for example the mangroves being threatened by tourist boat activities and pollution due to littering.

scholarly journals THE LEGAL PROTECTION OF MARINE ECOSYSTEM FROM CIGARETTE BUTTS POLLUTION IN INDONESIA

2021 ◽  
Vol 29 (1) ◽  
pp. 129-152
Author(s):  
Nasrullah ◽  
Abdul Haseeb Ansari ◽  
Adis Putri Nelaniken
Keyword(s):  
Marine Pollution ◽  
Marine Ecosystem ◽  
Waste Product ◽  
Legal Protection ◽  
Developed Countries ◽  
Chemical Contamination ◽  
Aquatic Life ◽  
Waste Products ◽  
Cigarette Butts ◽  
Tobacco Waste

Indonesia is recognized as a country with high potential in maritime resources. However, Indonesia is also known as the second-largest contributor to plastic waste in the ocean. It is estimated that Indonesia contributes around 200,000 tonnes of plastic disposals. The highest pollutant of the plastic product was found to be cigarette butts. The trillions of cigarette butts generate chemical contamination the ocean waters. Chemicals that leach from the cigarette butts are extremely toxic to the aquatic life in the ocean. The marine pollution caused by this contamination was never seriously noticed, even though the huge number of cigarette butts were found in the sea. A grave concern should be shown on the impacts of the cigarette butts to the ocean. The objective of this article is to elaborate on Indonesian law dealing with the issue the cigarette butt pollution contaminating the oceans of Indonesia.This article is the result of normative research which analyzes exiting statutes and cases that aims at protecting the marine ecosystem from the cigarette filter disposal. This research attempts to analyze the existing laws and regulations in Indonesia on the protection of the marine ecosystem from toxic and hazardous wastes, especially from cigarette butts waste disposal. The results of this study show that to date there is no specific regulation dealing with tobacco waste product disposals. Accordingly, the government is suggested to enact a set of specific and effective regulations pertaining to tobacco waste products as done by some developed countries or states such as Singapore and Australia, so that marine pollution caused by cigarette butts could be prevented. 

scholarly journals Addressing Impact Evaluation Gaps in Belt and Road Initiative Projects in Africa: The Standard Gauge Railway Project in Kenya as a Proof of Concept

2020 ◽  
pp. 1-38
Author(s):  
Keren Zhu ◽  
Rafiq Dossani ◽  
Jennifer Bouey
Keyword(s):  
Impact Evaluation ◽  
Comprehensive Evaluation ◽  
Stakeholder Participation ◽  
Social Benefit ◽  
Evaluation Framework ◽  
Systematic Evaluation ◽  
Belt And Road Initiative ◽  
Proof Of Concept ◽  
Belt And Road ◽  
The Impact

Abstract The impact of the Belt and Road Initiative (BRI) to global development will be unprecedented and significant, and developmental impact evaluation is therefore central to understanding BRI projects and making informed decisions. Compared with evaluations of individual projects and programs, evaluation of large and mega infrastructure projects under the BRI is particularly challenging and complex in integrating stakeholder objectives, accounting for social benefit and costs, and tracking long-term project impact. In this paper, we summarize the key drawbacks of existing BRI evaluation frameworks, propose a systematic evaluation framework elicitation method based on the inputs from BRI subject matter experts and verified through stakeholder participation, and apply an interim evaluation framework in understanding the Mombasa-Nairobi Standard Gauge Railway project in Kenya, as a proof of concept of a comprehensive evaluation framework. In doing so, we seek to provide a tool for BRI decision makers and stakeholders to assess these projects holistically at planning, construction and operation stages.

FEATURES OF HANDLING SOLID DOMESTIC WASTE IN RURAL AREA (ON THE MATERIALS OF THE BAYKIVTSI UNITED TERRITORIAL COMMUNITY OF TERNOPIL REGION)

2021 ◽  
Vol 50 (1) ◽  
pp. 155-162
Author(s):  
Lyubov Yankovs'ka ◽  
Svitlana Novyts'ka ◽  
Alina Tsidylo
Keyword(s):  
Solid Waste ◽  
Organic Waste ◽  
Window Glass ◽  
Ferrous Metal ◽  
Domestic Waste ◽  
Solid Domestic Waste ◽  
Sort It ◽  
Low Level ◽  
Community Residents ◽  
Ecological Culture

The volume and structure of solid domestic waste in Ternopil region are analyzed. Our research in the Baikivtsi Utc proves that community residents dump less organic waste in containers (about 20%, which is twice less than in the regional center) because they can compost food waste using it as fertilizer for personal use plots (gardens). The volumes of organic waste fluctuate significantly throughout the year: the largest amount of them ends up in containers from May to September. The community residents throw out the least of organic waste in winter. One of the reasons is that there is a gradual replacement of last year's harvest with a new one. The habitants of the Baikivtsi Utc throw more paper away during the warmer months. The following types of paper prevail: offset - 33%, newsprint - 29%, coated - 4%, cardboard - 12%, designer - 5%, packaging - 16%, self-adhesive - 1%. In winter, most of the paper is burned to heat buildings. Among the scrap are mostly cans and metal lids (from bottles and cans). Ferrous metal almost never gets into containers due to the fact that it is profitable to sort it out and there are no problems to hand over scrap metal, since scrap collectors often come to the villages and offer quite decent price for it (therefore, there is no need to waste time transporting the metal). The plastic waste of the community includes plastic bottles from water, oil, household chemicals, canisters, plastic bags and ets. Among the various types of plastic: Polyethylene terephthalate or PET - 17%; high-density polyethylene (HDPE) - 29%; polyvinyl chloride or PVC - 4%; low density polyethylene (LDPE) - 34%; polypropylene, PP or PE - 8%; polystyrene, PS - 6% and other - 2%. The research showed that the following types of glass prevail in the structure of the cullet of the Baikivtsi community: window glass - 8%, technical glass - 3%, Plexiglas - 5%, triplex - 3%, glass from chemicals - 1%, ceramics - 10%, bottles - 70 % The survey showed that only 3% of the community's residents completely sort garbage, about 80% of them sort it partially, and almost 20% do not sort waste at all (and 12% of them plan to do it in the future). The reasons for the low level of waste sorting are not surprising, since, in addition to the low level of environmental awareness of the residents, there no proper conditions for sorting solid waste. The environmental advantages of sorting and recycling solid domestic waste were evaluated. In particular, the volumes of biogas that can be formed from the annual volumes of solid waste accumulation in the Baikivtsi united territorial community of Ternopil region, as well as the assessment of the environmental efficiency of recycling waste paper, plastic, glass were calculated. The cost of the Baikivtsi Utc solid waste as a secondary material resource will amount to UAH 2,051,943 per year, which can be a significant profit for the community. Key words: solid domestic waste, united territorial community, sorting, utilization, recycling ecological culture.

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