scholarly journals Fecal sludge as a fuel: characterization, cofire limits, and evaluation of quality improvement measures

2018 ◽  
Vol 78 (12) ◽  
pp. 2437-2448 ◽  
Author(s):  
Lauren M. Hafford ◽  
Barbara J. Ward ◽  
Alan W. Weimer ◽  
Karl Linden
Keyword(s):  
Low Income ◽  
Fuel Quality ◽  
Heating Value ◽  
Quantitative Studies ◽  
Sanitation And Hygiene ◽  
Fecal Sludge ◽  
Improvement Measures ◽  
Fuel Characterization ◽  
Sanitation Systems ◽  
Fuel Source

Abstract In many low-income cities, a high proportion of fecal sludge, the excreta and blackwater collected from onsite sanitation systems such as pit latrines, is not safely managed. This constitutes a major danger to environmental and human health. The water, sanitation, and hygiene sector has recognized that valorization of treated fecal sludge could offset the upfront cost of treatment by using it as a fuel source. The few quantitative studies on fecal sludge fuel published to date have focused on heating value, moisture, ash fraction, and heavy metals. However, other factors impacting fuel utility, specifically ash speciation, have not been adequately quantified for fecal sludge. This study contributes to closing that gap and shows the value of more detailed quantification. It first characterizes fecal sludge samples from Colorado and Uganda, confirms that the fuel is better if cofired with other biomass, and outlines a framework for determining safe cofire ratios. Second, the study evaluates two methods for improving fecal sludge as a fuel: carbonization and ash leaching. Carbonization of fecal sludge did not improve fuel quality, but leaching showed promise in ash reduction.

Ecosan Can Provide Sustainable Sanitation in Emergency Situations with Benefits for the Millennium Development Goals

2006 ◽  
Vol 1 (2) ◽  
Author(s):  
E. v. Münch ◽  
G. Amy ◽  
J. F. Fesselet
Keyword(s):  
Low Income ◽  
Urban Areas ◽  
Millennium Development Goals ◽  
Net Present Value ◽  
Soil Conditions ◽  
Value Analysis ◽  
Emergency Situations ◽  
Long Time ◽  
Development Goals ◽  
Sanitation Systems

This paper describes the potential of ecological sanitation (ecosan) to provide sustainable excreta disposal in emergency situations and in peri-urban areas or slums in developing countries. At the present time, pit latrines are the most common form of excreta disposal both for emergency situations and in low-income peri-urban areas or slums. Although not intended to be a long-term solution, pit latrines provided during emergencies are often used for a long time (more than six months to years). This practice is not sustainable if the area is prone to flooding or there are soil conditions that allow groundwater pollution in areas where groundwater is used for drinking water, to name but two of the main factors. We propose eight criteria for the applicability of ecosan based on analysis of three case studies representing different types of emergency situations. The two most important criteria are awareness and expertise in ecosan within the aid agencies, and availability of standardised, lightweight toilet units that are quick to assemble and easy to transport (e.g. container for faeces, and urine diversion squatting pan made of impact-resistant molded polypropylene). Such toilets could be moved to, or replicated in, other areas in need after the emergency (peri-urban areas or slums). This would provide benefits for Millennium Development Goals achievements (targets on hunger, child mortality, sanitation and slum dwellers) at lower cost than conventional sanitation systems. Costs for sanitation systems should be compared based on the entire system (toilet, transport, treatment, reuse in agriculture), using Net Present Value analysis for capital, and operating and maintenance costs.

scholarly journals COVID-19 pandemic: Water, sanitation and hygiene (WASH) as a critical control measure remains a major challenge in low-income countries

2021 ◽  
Vol 191 ◽  
pp. 116793
Author(s):  
Oscar Omondi Donde ◽  
Evans Atoni ◽  
Anastasia Wairimu Muia ◽  
Paul T. Yillia
Keyword(s):  
Low Income ◽  
Control Measure ◽  
Low Income Countries ◽  
Sanitation And Hygiene

scholarly journals Estimation of the vine-shoot yield in the Gyöngyös district

2013 ◽  
pp. 21-26
Author(s):  
Cecília Gonda
Keyword(s):  
Accurate Data ◽  
Heating Value ◽  
Biomass Resource ◽  
Fuel Source ◽  
By Products

Every year, a significant amount of vineyard prunings is generated in Hungary. Instead of utilization them, it is burned directly on the field in spite of the limitations of legalization highly pollute the environment in recent decades. The vineyard pruning itself or with other by-products from pomology and forestry can be significant amount of fuel source. However, before the planning to utilization the essential task is to estimate the potential. This study examine that how many vineyard is generated in the micro-region of Gyöngyös in every year on appointed vineyard. In order to vine-branch potential calculate more accurate data was necessary so the products had to be determined for all plant. Thus, the biomass resource and the utilization become plannable. As the result of the experiment we can estimate that 1,5 t/ha vineyard pruning are generated. It means more than 9 thousand tons pruning in the micro-region of Gyöngyös. This amount can be convert into fuel source more than 150 thousand GJ heating value. The results evince that the vineyard pruning is important fuel source in every year in the micro-region of Gyöngyös. Further usage is suggested for other regions in other size.

scholarly journals Fecal indicator and Ascaris removal from double pit latrine content

2016 ◽  
Vol 14 (6) ◽  
pp. 972-979 ◽  
Author(s):  
Digbijoy Dey ◽  
A. T. M. Ridwanul Haque ◽  
Babar Kabir ◽  
Sharmin Farhat Ubaid
Keyword(s):  
Rural Areas ◽  
Positive Impact ◽  
Universal Access ◽  
Organic Fertilizer ◽  
Rapid Progress ◽  
Fecal Material ◽  
Fecal Indicator ◽  
Fecal Matter ◽  
Sanitation And Hygiene ◽  
Fecal Sludge

Since May 2006, the BRAC Water, Sanitation and Hygiene (WASH) Programme in Bangladesh has enabled more than 30 million people to achieve hygienic sanitation, contributing to an increase in sanitation coverage from 33 to 83% in programme areas and rapid progress towards universal access. In rural areas, most families have single pit latrines that need to be emptied when full. Since 2007, BRAC has promoted the use of hygienic double-pit latrines. Use of double-pit latrines, where appropriate, is also recommended in the Bangladeshi Draft National Water Supply and Sanitation Strategy. More than 800,000 double-pit latrines are in use in BRAC WASH areas, delaying the need for emptying and allowing time for the fecal matter to decompose while the resting pit is sealed. This paper focuses on a study undertaken by BRAC WASH to treat and safely use fecal material from double pit latrines as an organic fertilizer for rice and other crops. The study investigated the removal of pathogens from pit waste through simple solar drying and conducted analysis on nutrient properties of fecal sludge. The study showed a significant positive impact on developing organic fertilizer from fecal sludge.

Theorizing Gentrification as a Process of Racial Capitalism

2021 ◽  
pp. 153568412110547
Author(s):  
Zawadi Rucks-Ahidiana
Keyword(s):  
United States ◽  
Middle Class ◽  
Racial Differences ◽  
Low Income ◽  
The United States ◽  
Racial Composition ◽  
Qualitative And Quantitative ◽  
Racial Capitalism ◽  
Quantitative Studies ◽  
Prior Literature

Academics largely define gentrification based on changes in the class demographics of neighborhood residents from predominately low-income to middle-class. This ignores that gentrification always occurs in spaces defined by both class and race. In this article, I use the lens of racial capitalism to theorize gentrification as a racialized, profit-accumulating process, integrating the perspective that spaces are always racialized to class-centered theories. Using the prior literature on gentrification in the United States, I demonstrate how the concepts of value, valuation, and devaluation from racial capitalism explain where and how gentrification unfolds. Exposure to gentrification varies depending on a neighborhood’s racial composition and the gentrification stakeholders involved, which contributes to racial differences in the scale and pace of change and the implications of those changes for the processes of displacement. Revising our understanding of gentrification to address the racialization of space helps resolve seemingly contradictory findings across qualitative and quantitative studies.

scholarly journals Estimation of fuel potential of faecal sludge in a water scarce city, a case study of Jaipur Urban, India

2020 ◽  
Vol 15 (2) ◽  
pp. 506-514
Author(s):  
Niharika Sharma ◽  
Sagar Gupta ◽  
Anil Dutt Vyas
Keyword(s):  
Heating Value ◽  
High Heating Value ◽  
Rural And Urban ◽  
Urban Level ◽  
Water Scarce ◽  
Sanitation Systems ◽  
The City ◽  
Different Sources ◽  
Faecal Sludge

Abstract Non-sewer sanitation systems are widely implemented for treatment and management of faecal sludge (FS) and septage in developing nations. India became an open defecation free (ODF) country in 2019, with more than 90 million toilets at rural and urban level constructed to achieve this ODF status. Government of India also initiated a faecal sludge and septage management (FSSM) policy in 2017. This paper highlights the policy vision for the state of Rajasthan and predicts options for a safely managed sanitation system through exploring the fuel potential of faecal sludge generated in the city. The intended study is an attempt to valorize faecal sludge into a marketable product through determining the heat capacity of dried faecal sludge from different sources such as pit toilets, septic tanks etc. In the present work in urban Jaipur, which is already a water scarce city, various onsite sanitation systems were targeted to collect FS samples from different locations. It was observed that the FS generated has a high heating value of 13.96 MJ/kg, with total solids ranges from 7 to 9%. For a pragmatic resource recovery option, the experimental data observed is validated with a literature review.

scholarly journals Water, Sanitation and Hygiene (WASH) in Schools in Low-Income Countries: A Review of Evidence of Impact

2019 ◽  
Vol 16 (3) ◽  
pp. 359 ◽  
Author(s):  
Celia McMichael
Keyword(s):  
Low Income ◽  
Library Science ◽  
Low Income Countries ◽  
Cochrane Library ◽  
Publication Date ◽  
Program Fidelity ◽  
School Based ◽  
Sanitation And Hygiene ◽  
Hygiene Promotion ◽  
The Impact

Many schools in low-income countries have inadequate access to water facilities, sanitation and hygiene promotion. A systematic review of literature was carried out that aimed to identify and analyse the impact of water, sanitation and hygiene interventions (WASH) in schools in low-income countries. Published peer reviewed literature was systematically screened during March to June 2018 using the databases PubMed, Embase, Web of Science, the Cochrane Library, Science Direct, and Google Scholar. There were no publication date restrictions. Thirty-eight peer reviewed papers were identified that met the inclusion criteria. The papers were analysed in groups, based on four categories of reported outcomes: (i) reduction of diarrhoeal disease and other hygiene-related diseases in school students; (ii) improved WASH knowledge, attitudes and hygiene behaviours among students; (iii) reduced disease burden and improved hygiene behaviours in students’ households and communities; (iv) improved student enrolment and attendance. The typically unmeasured and unreported ‘output’ and/or ‘exposure’ of program fidelity and adherence was also examined. Several studies provide evidence of positive disease-related outcomes among students, yet other assessments did not find statistically significant differences in health or indicated that outcomes are dependent on the nature and context of interventions. Thirteen studies provide evidence of changes in WASH knowledge, attitudes and behaviours, such as hand-washing with soap. Further research is required to understand whether and how school-based WASH interventions might improve hygiene habits and health among wider family and community members. Evidence of the impact of school-based WASH programs in reducing student absence from school was mixed. Ensuring access to safe and sufficient water and sanitation and hygiene promotion in schools has great potential to improve health and education and to contribute to inclusion and equity, yet delivering school-based WASH intervention does not guarantee good outcomes. While further rigorous research will be of value, political will and effective interventions with high program fidelity are also key.

An investigation of the perspectives of low-income Latina mothers with preschoolers transitioning to kindergarten

2020 ◽  
pp. 146879842090182 ◽  
Author(s):  
Sarai Coba-Rodriguez ◽  
Robin L Jarrett
Keyword(s):  
Emergent Literacy ◽  
Low Income ◽  
Literacy Development ◽  
Qualitative Interviews ◽  
Family Members ◽  
Literacy Skills ◽  
Latina Mothers ◽  
Quantitative Studies ◽  
Demographic Risk ◽  
Demographic Risk Factors

Research in the United States (U.S.) documents that young Latino children whose families are characterized by demographic risk factors disproportionately lack the early literacy skills needed to successfully transition to kindergarten. Quantitative studies using comparative samples have found lower quality home learning environments and lower scores on a child outcome assessments among Latino children compared to their Black and White peers. A small body of qualitative, non-comparative studies that focus on Latino families in their own right provides descriptive accounts of the positive ways that Latina mothers and other family members promote child literacy development, despite being characterized by demographic risk factors. However, the social address variables utilized in quantitative studies limit our understanding of the family processes affecting child literacy development, and most qualitative studies focus on older, school-aged children with very few studies focusing on the early transitional period before kindergarten, especially for Latinos. Addressing current gaps in the literature on preschool-aged children, we conducted in-depth qualitative interviews and photo-elicitation interviews with 17 low-income Latina mothers of Head Start preschoolers in a northern Chicago suburb in the U.S. Privileging mothers’ voices and experiences, we explored their in-home emergent literacy practices and the role of other family members in promoting children’s literacy development. Informed by a family resilience framework, we accessed intimate family worlds that reveal highly engaged and resilient parents. Specifically, we identified numerous child literacy skills that families supported through an array of family instructional practices and tools. We further identified the role of various available family members, particularly fathers and siblings. These findings add to substantive discussions of emergent literacy, resilience and familismo. Insights from the qualitative interviews lead to recommendations for how early childhood educators can capitalize on families’ funds of knowledge, and view them as valued collaborators.

Sign in / Sign up

Export Citation Format

Share Document