Study on Mechanism of Molybdenum Concentrate Carbon-Free Roasting

2012 ◽  
Vol 588-589 ◽  
pp. 1685-1688 ◽  
Author(s):  
Lian Yong Wang ◽  
Jing Fan Zhang ◽  
Lei Dai ◽  
Jiu Ju Cai

Technical analysis was used to analyze the roasting of molybdenum concentrate on the basis of thermal balance test of rotary furnaces used for Roasting, and the results indicate that, on the condition of commercial production, the Roasting of MoS2 can occur spontaneously because the heat of reaction is so much that proper cooling measures should be adopted in case overheating happens. According to above analysis, carbon-free roasting technology of molybdenum concentrate was proposed in this paper. The results, which come from thermal balance test and technical analysis of rotary furnaces used for carbon-free roasting of molybdenum concentrate, indicate that outer heat source used in traditional Roasting technology is not needed in carbon-free roasting technology, because enough heat is generated during Roasting to ensure spontaneous reaction. In fact, heating is not needed in operating process except at the beginning, to make molybdenum concentrate catching fire, and when reaction completing, to remove residual sulphur. The technology in this paper is obviously advantageous in aspects of energy saving, output, quality of production, heat loss, the concentration of SO2 in flue gas, etc. and will have remarkable environmental benefits, economic benefits and social benefits.

Author(s):  
Larisse Medeiros Gonçalves ◽  
Pedro Henrique Da Silva Monteiro ◽  
Luana Santos dos Santos ◽  
Nayane Jaqueline Costa Maia ◽  
Louise Ferreira Rosal

As áreas verdes são descritas como ambientes em que há o predomínio de vegetação arbórea, englobando as praças, os jardins públicos e osparques urbanos, que são espaços livres públicos, cuja fundamental utilidade é o lazer e a aproximação do meio ecológico com o meio urbano. Este trabalho tem como objetivo principal compreender a relação da qualidade de vida com as áreas verdes urbanas, trazendo aporte teórico, bem como conhecer processos do planejamento de arborização urbana, para que se frisem os benefícios da mesma para a população. Para efetivar os resultados foi escolhido o procedimento de revisão bibliográfica, com criteriosas escolhas, para se obter um estudo embasado no que tange a teoria e a prática. Percebeu-se que a partir da discussão dos textos expostos se pode afirmar que existe uma real necessidade de que os municípios tenham em seus projetos de desenvolvimento a implantação arbórea técnica, responsável e pensada, em favor da população residente. Aumentando seus benefícios socioambientais, até mesmo os econômicos. Com isso, deve-se conhecer os vegetais implantados para que estes não tenham conflitos com equipamentos urbanos. Deve-se atentar em implantar árvores que não tenham frutos grandes e prejudiquem a limpeza do ambiente e quem utiliza o espaço, que sejam, também, espécies nativas, menos propensas a não adaptação do local. Existem muitos trabalhos conceituais que fomentam a discussão a respeito do tema, bem como pesquisas atuais, demonstrando que existe uma preocupação crescente relacionada ao planejamento urbano das áreas verdes, porém é preciso mais debates a respeito para que exista a conscientização das entidades responsáveis e beneficiando os residentes e o meio ambiente.Palavras-chave: Planejamento Urbano. Benefícios Socioambientais. Meio Ambiente.AbstractGreen areas are described as environments where there is a predominance of arboreal vegetation, encompassing squares, public gardens and urban parks; they are public spaces whose fundamental utility is the leisure and approach of the ecological environment with theurban environment. The main objective of this work is to understand the relationship between quality of life and urban green areas, bringingtheoretical contribution, as well as knowing the processes of urban afforestation planning, so that the benefits of the same for the population are highlighted. In order to achieve the results, the bibliographic review procedure was chosen, with careful choices, to obtain a study based on theory and practice. It was noticed that from the discussion of the texts presented here, it can be affirmed that there is a real need for the municipalities to have in their development projects the technical and responsible tree plantation in favor of the resident population, and thus increasing their socio-environmental, even economic, benefits. With this, it is necessary to know the implanted vegetables so that they do not have conflicts with urban equipment. Attention should be paid to the implantation of trees that do not have large fruits and that harm the cleanliness of the environment and those who use the space, who are also native species, less prone to non-adaptation of the site. There are many conceptual works that foment the discussion about the theme, as well as, current research, demonstrating that there is a growing concern related to the urban planning of green areas, however, there is a need for more debates about this so that there is awareness of the responsible entities and benefiting residents and the environment.Keywords: Urban Planning. Socio-Environmental Benefits. Environment.


Author(s):  
Aleff Omar Shah Nordin ◽  
Fathilah Ismail ◽  
Nurain Yasmin Mohd Jamal

The purpose of this research was to identify the perceptions of the local community toward tourism development impacts on Perhentian Island. Specifically, the research examined the local community’s perceptions of socio-cultural impacts, economic impacts, and environmental impacts of tourism development. The research also examined the relationship between the impacts of tourism development on the local community’s quality of life (QOL). This research was conducted using a quantitative approach by obtaining responses from 272 local community respondents on Perhentian Island. A household survey based on purposive sampling techniques was conducted to select a suitable sample. The findings of the study revealed that the positive impacts of tourism development outweighed the negative impact. Based on local community perceptions, they believed that tourism development improved their quality of life. This study also finds the impact of social-cultural benefit, economic benefits, economic cost, and environmental benefits have a significant relationship with quality of life. However, there is a negative relationship between the impact of social-cultural cost and environment cost on the quality of life. The findings of this study are important for planners and developers in planning strategic and sustainable tourism development on tourism destinations.


2011 ◽  
Vol 29 (2) ◽  
pp. 96-103 ◽  
Author(s):  
Charles R. Hall ◽  
Madeline W. Dickson

Abstract Green industry firms have competed for decades on the basis of quality and service. While these competitive dimensions are still important, the industry has continued along its path of maturation and firms must incorporate other factors into their value proposition in order to be successful in this hypercompetitive market. Given the recent economic downturn of 2008–2009, consumers are more value-conscious than ever, but are still willing to consume, and pay premiums for, products and services that enhance their quality of life. This paper summarizes the peer-reviewed research regarding the economic benefits, environmental benefits (eco-systems services), and health/well-being benefits of green industry products and services that serve to enhance the quality of life for consumers.


Hydrology ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 9
Author(s):  
Md. Rezaul Karim ◽  
B. M. Sadman Sakib ◽  
Sk. Sadman Sakib ◽  
Monzur Alam Imteaz

Despite numerous studies on residential rainwater tank, studies on commercial rainwater tank are scarce. Corporate authorities pay little heed on this sustainable feature. With the aim of encouraging corporate authorities, this study presents the feasibility and economic benefits of rainwater harvesting (RWH) in commercial buildings in the capital city of Bangladesh, where water authority struggles to maintain town water supply. The analysis was conducted using a daily water balance model under three climate scenarios (wet, dry and normal year) for five commercial buildings having catchment areas varying from 315 to 776 m2 and the storage tank capacity varying from 100 to 600 m3. It was found that for a water demand of 30 L per capita per day (lpcd), about 11% to 19% and 16% to 26.80% of the annual water demand can be supplemented by rainwater harvesting under the normal year and wet year climate conditions, respectively. The payback periods are found to be very short, only 2.25 to 3.75 years and benefit–cost (B/C) ratios are more than 1.0, even for building having the smallest catchment area (i.e., 315 m2) and no significant overflow would occur during monsoon, which leads to both economic and environmental benefits. Though the findings cannot be translated to other cities as those are dependent on factors like water price, interest rate, rainfall amount and pattern, however other cities having significant rainfall amounts should conduct similar studies to expedite implementations of widescale rainwater harvesting.


Author(s):  
Arja Rautio ◽  
Natalia Kukarenko ◽  
Lena Maria Nilsson ◽  
Birgitta Evengard

Climate change in the Arctic affects both environmental, animal, and human health, as well as human wellbeing and societal development. Women and men, and girls and boys are affected differently. Sex-disaggregated data collection is increasingly carried out as a routine in human health research and in healthcare analysis. This study involved a literature review and used a case study design to analyze gender differences in the roles and responsibilities of men and women residing in the Arctic. The theoretical background for gender-analysis is here described together with examples from the Russian Arctic and a literature search. We conclude that a broader gender-analysis of sex-disaggregated data followed by actions is a question of human rights and also of economic benefits for societies at large and of the quality of services as in the health care.


2010 ◽  
Vol 24 (2) ◽  
pp. 119-138 ◽  
Author(s):  
Nancy Hritz ◽  
Craig Ross

Sport tourism is one of the fastest growing market segments in the tourism industry and is receiving increased attention for its social, environmental, and economic impacts upon destinations. Prior research in tourism impacts has tended to focus exclusively on tourism as a whole and does not differentiate among the different types of tourism that may be present in a destination. The purpose of this study was to examine how residents of Indianapolis, Indiana perceived the impacts sport tourism has upon their city. A total of 347 surveys were returned in a mailed questionnaire. Exploratory factor analysis revealed a four factor structure of social benefits, environmental benefits, economic benefits, and general negative impacts. Social and economic benefits were strong predictors for support for further sport tourism development revealing a strong identification with the advantages of sport tourism in their city such as an increased cultural identity and social interaction opportunities.


2008 ◽  
Author(s):  
Luciano Tadeu Baffi Penhalbel ◽  
Edson Dias Ferreira ◽  
Jorge Paulo Dantas de Araújo ◽  
Mauro Roberto Souza Sobral ◽  
Flávio Benjamin Borges Moreira

2014 ◽  
Vol 33 (4) ◽  
Author(s):  
Henrieta Pavolová ◽  
Adriana Csikósová ◽  
Tomáš Bakalár

AbstractThe development of the regions in Slovakia in recent years has significant disparities in both so-cio-economic as well as environmental issues, as evidenced by the eight environmentally polluted areas (these areas are highly urbanised with industrial agglomerations or intensive agricultural production).This article deals with a management system model of regional by implementation of projects in environmental field of water management with application-specific benefits and risks arising from the process of their implementation in relation to regional development. It analyses projects in the area of water management of one of the regions of Slovakia, KoŠice region in particular, in terms of connection to public water duct and sewer, identifes a strategy for development of the region and its socio-economic and environmental benefits based on the analysis of drinking water, the quan-tity and quality of treated wastewater through wastewater treatment plants (WTPs). It identifes the infuencing factors of benefits and risks and proposes procedure for solving at various stages.


2014 ◽  
Vol 1010-1012 ◽  
pp. 1985-1988
Author(s):  
Min Li ◽  
Bao You Liu

LINGO software with many favorable features such as convenient operation, high running speed, wide application and valid result, has been widely used in solving complicated issues in environmental fields in the past a few years. In this paper, three practical examples in environmental monitoring were introduced and resolved by LINGO software, the reliability of the results was verified and the comparison with other methods was given. The results show that, LINGO software is useful to direct funds and resources’ allocation in environmental monitoring, and it is an effective tool to improve economic benefits and obtain better environmental benefits.


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