scholarly journals GESTÃO DE SERVIÇOS DE LIMPEZA URBANA EM CIDADES DE MÉDIO PORTEDOI: 10.5773/rgsa.v4i3.334

2010 ◽  
Vol 4 (3) ◽  
pp. 146
Author(s):  
Valderi Duarte Leite ◽  
Susiene Almeida de Oliveira ◽  
Shiva Prasad ◽  
Maria Denise Ribeiro
Keyword(s):  
Solid Waste ◽  
Local Community ◽  
Chemical Characterization ◽  
Substantial Contribution ◽  
Waste Collection ◽  
Collection Management System ◽  
Per Capita ◽  
Physical And Chemical ◽  
The City

Este trabalho tem como principal objetivo, estudar a realidade do Sistema de Limpeza Urbana da cidade de Campina Grande-PB, analisando de maneira integrada os seus aspectos sociais, econômicos e ambientais. A metodologia fundamentou-se na aplicação de questionários aos técnicos da Secretaria de Obras e Serviços Urbanos do município e aos da empresa prestadora de serviço, responsável por 90% da coleta de resíduos sólidos domiciliares e comerciais da cidade e entrevistas à comunidade atendida pela serviço de limpeza pública, para obtenção de informações a respeito da problemática dos resíduos sólidos urbanos da cidade de Campina Grande-PB. O trabalho foi norteado também na identificação dos roteiros e prática de coleta realizada no município, na determinação da taxa de produção per capita e caracterização física e química dos resíduos sólidos domiciliares. Os resultados advindos da realização deste trabalho,apresentam substanciais contribuições na área da limpeza urbana. Além disso, com base no diagnóstico obtido delineou-se um novo modelo para o sistema de limpeza urbana tanto para a cidade de Campina Grande-PB, enquanto para as demais cidades com características equivalentes. Palavras-chave:Resíduos sólidos; limpeza urbana; coleta de resíduos; sistema de gestão. ABSTRACT This work has as its main objective to study the reality of the System of Urban Cleaning in the city of Campina Grande (PB), analyzing in an integrated way its social, economic and environmental aspects. The methodology is based on the application of questionnaires to the technicians in the local Urban Services Department and to the employees of the waste collection company, responsible for 90% of the collection of solid waste. Interviews are also applied to members of the local community. The work was also guided towards the identification of the routes and procedures of collection carried out in the city, and also the determination of per capita production rating and physical and chemical characterization of the home solid waste. The results present substantial contribution to the area of the urban cleaning. Therefore, a new model for the system of urban cleaning is designed not only for Campina Grande but also for other cities alike. Keywords:Solid waste; urban cleaning; waste collection; management system.

scholarly journals Physical, Chemical-physical and chemical characterization of must and integral juice in grape cultivars

2017 ◽  
Vol 10 (3) ◽  
pp. 1 ◽  
Author(s):  
I. T. S. Viana ◽  
G. V. A. Fonseca ◽  
G. H. Bueno ◽  
J. O. F. Melo
Keyword(s):  
Chemical Characterization ◽  
Grape Juice ◽  
Titratable Acidity ◽  
Mineral Elements ◽  
Flame Emission ◽  
Level Of Significance ◽  
Physical And Chemical ◽  
Grape Cultivars

In recent years there has been an important increase in the production of grape derivatives such as integral grape juice. Thus, it was intended with the accomplishment of this study to evaluate the composition of the grape juice of the grape cultivars: Bordô, Concord e Isabel in the composition of integral grape juice from the Bento Gonçalves-RS. The samples were evaluated for classical analysis:°Brix, pH, titratable acidity, ratio Brix / titratable acidity made through methods, physics, physical chemistry and chemistry. The mineral elements sodium and potassium analyzed by flame emission and color intensity by colorimetry. For the statistical analysis of the data, the Tukey test was applied at the 5% level of significance. The contents of integral grape juice evaluated, SS, A Tand minerals presented according to the legislation, the pH was within the comparative average with other works. The determination of the color demonstrated the need to make cuts.

Evaluation of the Potential of Waste from Pulp Production (Grits) in its Use in Mortar: Physical and Chemical Characterization

2015 ◽  
Vol 820 ◽  
pp. 583-587
Author(s):  
Leonardo Carvalho Mesquita ◽  
Rita de Cássia S. Sant’ana Alvarenga ◽  
Carol Ferreira Rezende Santos ◽  
Adonys Natan Oliveira Alvares ◽  
Ana Augusta Passos Rezende ◽  
...  
Keyword(s):  
Paper Industry ◽  
Chemical Characterization ◽  
Pulp And Paper Industry ◽  
Kraft Process ◽  
Physical And Chemical Characterization ◽  
Absorption Determination ◽  
Potential Alternative ◽  
Physical And Chemical ◽  
Chemical Testing

The grits is an inorganic solid residue generated during the Kraft process by the pulp and paper industry, which presents in its composition the main ingredients of Portland cement. According to some authors, the grits can be classified as a non inert, non hazardous, granular solid industrial waste. With this in mind, a study was proposed with the objective of evaluating, initially, the applicability of grits in mortar, by means of physical and chemical testing. The physical evaluations were realized through the following tests: determination of bulk gravity saturated - surface - dry (SSD) and water absorption; determination of the pulverulent material content; and the determination of particle size distribution. To chemically test the grits, a reading of the metal concentrations present in the grits was realized as well as an analysis of the leaching and solubilization extracts. It was concluded that the addition of grits to mortar is a potential alternative.

A Framework for Assessment of Existing Solid Waste Management Practices and Characterization of Municipal Solid Waste in Muzzafarnagar City, India

2018 ◽  
pp. 1-18
Author(s):  
Ankur Choudhary ◽  
Rajiv Ganguly ◽  
Ashok Kumar Gupta
Keyword(s):  
Solid Waste ◽  
Management Practices ◽  
Solid Waste Management ◽  
Collection Efficiency ◽  
Chemical Characterization ◽  
Uttar Pradesh ◽  
Msw Management ◽  
Waste Management Practices ◽  
The City

This chapter reports the details of the existing system of MSW management and characterization of Muzaffarnagar City located in Western Uttar Pradesh (UP) state in India. The overall waste generated in the city is about 120-125 tons per day (TPD) with a per capita generation rate of 0.415 kg/person/day with a collection efficiency of 70-80%. Physico-chemical and geotechnical properties of the MSW were carried out to determine its overall characteristics. The characterization results showed about 46% of the waste generated in the city is organic nature (from HIG and MIG) and 52% for (LIG) with chemical characterization showing that the elemental carbon was in the highest proportion. Further, the chapter also recommends suitable remedial measures for proper management of the existing MSW management system and suitable treatment alternatives.

scholarly journals Impact of Leachate in the Soil Vellalore, Coimbatore

2020 ◽  
Vol 9 (4) ◽  
pp. 3075-3078
Keyword(s):  
Solid Waste ◽  
Batch Reactor ◽  
Chemical Characterization ◽  
Ammonia Nitrogen ◽  
Total Carbon ◽  
Disposal Site ◽  
Resource Exploitation ◽  
Cumulative Volume ◽  
Volatile Solids ◽  
Physical And Chemical

As a consequence of increasing urbanisation and industrialization two major effects have occurred. They are resource exploitation and waste generation. In this view, the present work has been undertaken to study problems of open dumping of MSW at Vellalore disposal site of Coimbatore city. The objectives of the present study are monitor and assess the problems of principle solid waste on land and to investigate the feasibility of energy recover from MSW. Physical and chemical characterization of MSW collected from the disposal site showed that the solid waste has 68.95% of biodegradable fraction with relatively higher percentage of moisture content and 72% of volatile solids contents. Hence, methanation process of MSW can be carried out to recover energy. Leachate characterisation study concludes the that the concentration of Total Organic Carbon, Ammonia nitrogen, volatile solids, pH , electrical conductivity were high in fresh leachate and decreased due to the decomposition of MSW. Soil quality study of Vellalore site showed that the soil texture and colour has been altered to a depth of 60cm.To manage the solid waste problem, high solids anaerobic digestion process was carried out in the laboratory in a batch reactor, which showed that the factor pH was found to be significant in the production of biogas. The concentration of volatile solids, Total carbon, Total nitrogen, due to the decomposition of the reactor contents, which has utilized in the production of gas. During the experimental study a cumulative volume of 3.2 litres of gas was obtained in a period of 120 days from 8 litres volume of the initially loaded MSW.

scholarly journals Keunggulan Kompetitif Kelompok Pedagang Sektor Informal Pendatang

2018 ◽  
Author(s):  
Jurnal ARISTO
Keyword(s):  
Data Analysis ◽  
Sampling Method ◽  
Local Community ◽  
Qualitative Approach ◽  
Competitive Edge ◽  
Business Opportunities ◽  
The Subject ◽  
The City ◽  
Depth Interviews

This study aims to to understand and illustrating the effort to encourage school a competitive advantage well as to the vendors angkringan order to be able to maintain a venture thus being able to compete in the city of ponorogo. Was used in the study a qualitative approach was adopted by applying a technique purposive the sampling method of as the determination of the subject matter of the research. The technique of an excavation data using in depth interviews and observation. While the technique of of the data analysis use the model interactive. The research results show that 1). a group of traders both jews and the proselytes angkringan in the city of ponorogo it is able to defend and develop their business; 2). their ability in of maintaining and developing its business caused by existence of the superiority and dominion of maintained the company competitiveness in government in their efforts to arab nations as a bloc; 3). a competitive edge of which there are applied with the value of the belief or joined as regards allah religion will try to get away and value of please the power to do anything help each other out local community and is developing in the group historically traders angkringan; and 4). the value of the community’s trust and the value of help one another are not limited to financial problems or business capital, but in the form of information important about business opportunities, help residence, and scouted for permission to occupy a location strategic to venture angkringan in the city ponorogo.

scholarly journals Assessment of Solid Waste Disposal in Yenagoa, Bayelsa State, Nigeria

2018 ◽  
pp. 1-14 ◽  
Author(s):  
H. O. Stanley ◽  
C. S. Orakwuemma ◽  
B. O. Onumajuru ◽  
A. S. Opukeme ◽  
L. O. Onaghise
Keyword(s):  
Solid Waste ◽  
Waste Disposal ◽  
Sampling Method ◽  
Management Practices ◽  
Cluster Sampling ◽  
Waste Collection ◽  
Solid Waste Disposal ◽  
Cross Sectional ◽  
Rapid Urbanization ◽  
The City

The problem of municipal waste is a challenge of global proportion occasioned by exponentially increasing population, rapid urbanization, industrialization, inefficient utilization of natural resources, lack of citizen awareness regarding the environmentally adequate disposal of waste, consumption, socioeconomic status (lifestyle), and others. This study aimed to assess solid waste disposal practices in Yenagoa metropolis, Bayelsa State, Nigeria. The study adopted a descriptive and cross-sectional approach where multi-stage sampling was applied to select the sample communities by a simple random sampling method and the cluster areas for data collection by a cluster sampling method. The study revealed that the residents had a good awareness of 229 (95.4%) of waste management practices. About 86.7% of respondents keep their wastes in the bin while 6.3%, 5.0% and 2.1% practiced burning, throwing into the river or along the roads and keeping in the backyard respectively. Waste collection by the sanitation authority was relatively high (70.4%) in some locations in comparison to areas where wastes were never removed (22.1%). The residents’ attitude towards solid waste disposal was generally good. However, the sanitation level was strongly constrained by limitations on the part of the sanitation authority. The sanitation authority does not cover all areas in the city because of manpower and equipment shortage. Yenagoa is a small city with most areas unplanned and having so many shanties. All wastes in the city are collected without sorting or recycling. The sanitation can be improved if the government would provide at subsidized cost, waste disposal materials such as polythene bags and plastic bins for the residents. More waste collection points should be sited to ease disposal and must be evacuated on a timely basis.

scholarly journals Collection of Solid Waste in Municipal Areas: Urban Logistics

2019 ◽  
Vol 11 (19) ◽  
pp. 5442 ◽  
Author(s):  
Jania Astrid Saucedo Martinez ◽  
Abraham Mendoza ◽  
Maria del Rosario Alvarado Vazquez
Keyword(s):  
Solid Waste ◽  
Mixed Integer ◽  
World Population ◽  
Waste Collection ◽  
Water Safety ◽  
Recreation Areas ◽  
Accelerated Growth ◽  
The Government ◽  
The City ◽  
Cost Economic

A sustainable process satisfies the current needs without compromising the ability of future generations to satisfy their own needs; that is, it must have a triple impact (sustainability): social, economic, and environmental. In México, there are several services that the government must provide to society for its proper development, for example, the collection of solid waste. Urban logistics include all the processes and operations that provide a service to the community, such as water, safety, health, waste collection, etc., providing the service with the lowest possible cost (economic, social, and environmental) that contributes to the sustainability of the city. Due to the accelerated growth of the world population, several environmental problems have arisen, among them, the generation of solid waste in important quantities; their proper management is relevant for adequate development of the population. The collection of solid waste in municipal areas aims to grant green spaces and recreation areas for the citizens. Although an outstanding effort has been made by the government to provide an adequate service, there are still gaps in the application of correct tools that guarantee efficiency in operations and continuity in services. This article presents a proposal to improve the planning of the design of territories for the cleaning, weeding, and collection of solid waste in municipal areas, using two MILP (Mixed Integer Linear Programming) models. The main contribution of the adaptation of this model is the application to the weeding and waste collection service municipality of the Monterrey Metropolitan Area, which considers important factors among which are the amount of waste, frequency, and service coverage.

scholarly journals Study of C/N Ratio Effect on Biogas Production of Carica Solid Waste by SS-AD Method And LS-AD

2018 ◽  
Vol 156 ◽  
pp. 03055 ◽  
Author(s):  
Bakti Jos ◽  
Fariha Hundagi ◽  
Rizqi Pindy Wisudawati ◽  
Budiyono ◽  
Siswo Sumardiono
Keyword(s):  
Solid Waste ◽  
Fossil Fuels ◽  
Biogas Production ◽  
Total Solid ◽  
Waste Collection ◽  
Alternative Source ◽  
Biogas Yield ◽  
Total Composition ◽  
Kinetics Of

Biogas is a renewable energy which can be used as an alternative source to replace fossil fuels. Recently, the use of energy has become an important issue because the oil sources and natural gas are depleting. Utilization of carica waste to produce biogas can reduce the consumption of commercial energy sources such as kerosene as well as the use of firewood. Biogas is produced by the process of organic material digestion by certain anaerobic bacterial activity in anaerobic digester. In this study we studied the influence of LS-AD and SS-AD methods, the effect of C / N ratio on biogas yield obtained and kinetics of biogas production reaction. The study was conducted by making a total solid variation of 7%, 9%, 11%, 13%, 19%, 21%, 23% and C/N ratio 25 and 30. The study started with carica waste collection process and examination of the total composition of solids and water content. Thereafter, calculation and determination of variation of C / N ratio by mixing the substrate with inoculum and urea into the reactor. Observe the volume of biogas produced every two-day intervals. The highest biogas production rate of 1.7825 ml/g TS day was obtained from carica solid waste variable by liquid state anaerobic disgestion and C/N 25.

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