scholarly journals Nopalea cochenillifera Biomass as Bioadsorbent in Water Purification

Water ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2012
Author(s):  
Vitória Régia do Nascimento Lima ◽  
Álvaro Gustavo Ferreira da Silva ◽  
Renata Ranielly Pedroza Cruz ◽  
Luana da Silva Barbosa ◽  
Neilier Rodrigues da Silva Junior ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Water Purification ◽  
Reducing Sugars ◽  
Northeastern Brazil ◽  
Human Consumption ◽  
Contaminated Water ◽  
Water Safety ◽  
Total Coliforms ◽  
Exchange Matrix ◽  
Nopalea Cochenillifera

Contaminated water consumption is one of the greatest risks to human health, especially in underdeveloped and developing countries. Water is a universal right, but millions of people worldwide consume untreated surface water. The objective in this study is to evaluate water purification with Nopalea cochenillifera var. Miúda biomass. Fragments (1, 2, and 3 g) of N. cochenillifera were added to the aqueous solution containing red-yellow Chromic and Podzolic Luvisol simulating turbid water sources in Northeastern Brazil. The total, non-structural (i.e., reducing and non-reducing sugars, alcohol insoluble solids), and structural (i.e., pectin) carbohydrates, adsorption kinetics, turbidity, electrical conductivity, pH, zeta potential, and total coliforms presence were evaluated. Findings show that the Nopalea cochenillifera biomass adsorbed the suspended particles in the aqueous solution, making it more translucent due to the complex and heterogeneous adsorbents’ ion exchange matrix, but the biomass addition did not eliminate total coliforms from the aqueous solution. We concluded that the Nopalea cochenillifera biomass water treatment reduces suspended dissolved particles and turbidity, but it needs to be associated with other treatments to eliminate total coliforms and ensure water safety for human consumption.

scholarly journals Water Treatment and Purification in Fiqh Perspective

2021 ◽  
Vol 12 (2) ◽  
pp. 594-603
Author(s):  
Wan Ainaa Mardhiah Wan Zahari, Et. al.
Keyword(s):  
Water Purification ◽  
Pure Water ◽  
Primary Source ◽  
Document Analysis ◽  
Sewage Water ◽  
Human Consumption ◽  
Contaminated Water ◽  
Water Usage ◽  
Purification Method ◽  
Muslim Communities

Water is the primary source needed to ensure human and other creature life continuity. There are a lot of water on this planet, but increasingly this water is not where it is needed or it is of inadequate quality (purity) for human consumption or other beneficial for example industrial, agricultural and so on purposes. Contaminated water supply causing harm to human body health and also contributes to extinction to the certain creature. Thus, water-saving or wise water usage is an important matter in Islam. Reuse of wastewater or sewage water is a solution to the water crisis problem faced nowadays. The contaminated water is purified and treated by certain processes. Water purification or treatment water is introduced to produce pure and clean water. However, discussions and debates among experts and societies continue to occur because the water is categorised as pure water but not purify (musta'mal) and impure water and not purify (mutanajjis). Therefore, this study aims to identify the concept and method of water purification and treatment (تطهير الماء) according to Fiqh perspective. Methodology of this study is qualitative approach by using document analysis by analysing several classic Fiqh books by four mazhab (Hanafi, Maliki, Shafie and Hanbali). Hence, this study can discover the water purification method suggested in Fiqh perspective to be applied by Muslim communities in Malaysia.

scholarly journals Eggshell Powder as an Adsorbent for Removal of Fluoride from Aqueous Solution: Equilibrium, Kinetic and Thermodynamic Studies

2012 ◽  
Vol 9 (3) ◽  
pp. 1457-1480 ◽  
Author(s):  
R. Bhaumik ◽  
N. K. Mondal ◽  
B. Das ◽  
P. Roy ◽  
K. C. Pal ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Process ◽  
Low Cost ◽  
Fluoride Removal ◽  
Contaminated Water ◽  
Fluoride Adsorption ◽  
Langmuir Isotherm Model ◽  
Pseudo Second Order ◽  
Kinetic And Thermodynamic Studies ◽  
Maximum Removal

A new medium, eggshell powder has been developed for fluoride removal from aqueous solution. Fluoride adsorption was studied in a batch system where adsorption was found to be pH dependent with maximum removal efficiency at 6.0. The experimental data was more satisfactorily fitted with Langmuir isotherm model. The kinetics and the factor controlling adsorption process fully accepted by pseudo-second-order model were also discussed. Eawas found to be 45.98 kJmol-1by using Arrhenius equation, indicating chemisorption nature of fluoride onto eggshell powder. Thermodynamic study showed spontaneous nature and feasibility of the adsorption process with negative enthalpy (∆H0) value also supported the exothermic nature. Batch experiments were performed to study the applicability of the adsorbent by using fluoride contaminated water collected from affected areas. These results indicate that eggshell powder can be used as an effective, low-cost adsorbent to remove fluoride from aqueous solution as well as groundwater.

Prevalence and isolation of Toxoplasma gondii in goats slaughtered for human consumption in the semi-arid of northeastern Brazil

2022 ◽  
Vol 86 ◽  
pp. 102457
Author(s):  
Samira Pereira Batista ◽  
Samara dos Santos Silva ◽  
Wlysse Ferreira Sarmento ◽  
Rômulo Fylipe Silva ◽  
Larissa do Nascimento Sousa ◽  
...  
Keyword(s):  
Toxoplasma Gondii ◽  
Northeastern Brazil ◽  
Human Consumption ◽  
Semi Arid

Seroprevalence and isolation of Toxoplasma gondii in sheep intended for human consumption in Paraíba, northeastern Brazil

2021 ◽  
Author(s):  
Samara Santos Silva ◽  
Samira Pereira Batista ◽  
Wlysse Ferreira Sarmento ◽  
Rômulo Fylipe da Silva ◽  
Larissa Nascimento Sousa ◽  
...  
Keyword(s):  
Toxoplasma Gondii ◽  
Northeastern Brazil ◽  
Human Consumption

Quality assessment of drinking water in the communities of São Francisco do Conde, Baiacu, Santo Amaro and Cachoeira

2021 ◽  
Author(s):  
JOSEINA MOUTINHO TAVARES ◽  
Anderson Silva de Oliveira ◽  
Paulo Moutinho Andrade de Souza ◽  
Walter da Silva Junior
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Quality Assessment ◽  
Continuous Monitoring ◽  
Point Of View ◽  
Chlorine Content ◽  
Contaminated Water ◽  
Public Agencies ◽  
Total Coliforms

This work aims to evaluate the quality of drinking water in the communities of Baiacu, Sao Francisco do Conde, Santo Amaro and Cachoeira. It was verified that in some places of Santo Amaro and Sao Francisco do Conde, from the microbiological point of view, it is not appropriate for consumption, because it was found that the presence of total coliforms in 50% of the samples and that the chlorine content is below the values indicated by the standards in 75% of the analyzed samples. Thus, the consumption of contaminated water can cause diseases, so it is recommended cleaning of residential reservoirs, maintenance in pipes periodically, as well as the need for continuous monitoring of water quality and the intense participation of public agencies in these actions. Through these actions and the active participation of the population, one can preserve the environment and the lives of all those who transit in the communities of the Bay of All Saints

CuO nanorods: a potential and efficient adsorbent in water purification

RSC Advances ◽  
2014 ◽  
Vol 4 (76) ◽  
pp. 40580-40587 ◽  
Author(s):  
Prasanta Kumar Raul ◽  
Samarpita Senapati ◽  
Ashish K. Sahoo ◽  
Iohborlang M. Umlong ◽  
Rashmi R. Devi ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Sorption Capacity ◽  
Water Purification ◽  
Maximum Sorption Capacity ◽  
Maximum Sorption ◽  
Efficient Adsorbent ◽  
Cuo Nanorods

CuO nanorods can remove Pb(ii) from aqueous solution with a maximum sorption capacity of 3.31 mg g−1at 298 K.

scholarly journals Limnological characteristics of a reservoir in semiarid Northeastern Brazil subject to intensive tilapia farming (Orechromis niloticus Linnaeus, 1758)

2014 ◽  
Vol 26 (1) ◽  
pp. 47-59 ◽  
Author(s):  
Luis Artur Valões Bezerra ◽  
Walt Disney Paulino ◽  
Danielle Sequeira Garcez ◽  
Helena Becker ◽  
Jorge Iván Sánchez-Botero
Keyword(s):  
Chlorophyll A ◽  
Rainy Season ◽  
Dry Season ◽  
T Test ◽  
Northeastern Brazil ◽  
Human Consumption ◽  
Temperature Conductivity ◽  
Sampling Locations ◽  
Chemical Variability ◽  
Physical And Chemical

AIM: There is currently no consensus regarding the physical and chemical variability of tropical reservoirs. In semiarid Northeastern Brazil, reservoirs are among other things used for human consumption, industrial water supply and intensive fish farming, all of which can impact water quality. The objective of this study was to evaluate the physical and chemical variability of the water in Sítios Novos, a reservoir in semiarid Northeastern Brazil, comparing samples collected in areas of intensive tilapia (Oreochromis niloticus) farming to samples from areas not directly impacted by aquaculture, in both the dry and the rainy season. METHODS: Between October 2010 and July 2011, data were collected on temperature, conductivity, pH, turbidity, salinity, chlorophyll a, dissolved oxygen, oxygen demand, total phosphorus and total nitrogen levels in the water column using a multiparametric probe at four different sampling locations. Physical and chemical differences between the four locations were evaluated with the Kruskal-Wallis (KW) test and Dunn's post test, while the t test, followed by Welchʼs correction, was used to compare samples collected in different seasons. RESULTS: No influence of intensive aquaculture was detected when comparing sampling locations near fish farms (180C and 300C) to locations not directly impacted by aquaculture (LIMN1, near the dam, and LIMN2, near the debouch of the São Gonçalo river). However, the sampling locations differed significantly (p<0.05) with regard to conductivity, pH, turbidity and chlorophyll a levels. CONCLUSIONS: The physical and chemical variability was greater between seasons than between locations when the data were analyzed with the t test. That analysis showed significant differences for 22 of 40 comparisons between the 10 physical and chemical parameters in the two seasons at the four sampling locations. In conclusion, the physical and chemical variability registered for the Sítios Novos reservoir throughout the study period indicates morphometric, meteorological and hydrological heterogeneity, with emphasis on the differences between LIMN2 and the other three sampling locations and between the rainy season and the dry season. According to the calculated trophic status index, the reservoir is supereutrophic in the rainy season and supereutrophic to hypereutrophic in the dry season.

scholarly journals Qualitative exploration of local knowledge, attitudes and use of Moringa oleifera seeds for home-based water purification and diarrhoea prevention in Niger State, Nigeria

2019 ◽  
Vol 9 (2) ◽  
pp. 300-308 ◽  
Author(s):  
Agatha Aduro ◽  
Bassey Ebenso
Keyword(s):  
Rural Community ◽  
Water Purification ◽  
Moringa Oleifera ◽  
Water Safety ◽  
Structured Interviews ◽  
Community Members ◽  
Resource Setting ◽  
Home Based ◽  
Acceptable Method ◽  
Diarrhoea Prevention

Abstract This qualitative study explored stakeholders' knowledge of diarrhoea; their attitude to and perceptions of the use of Moringa oleifera seeds for home-based water treatment (HWT) and diarrhoea prevention in a low resource setting. Data were collected using semi-structured interviews with 13 respondents comprising rural community dwellers, health implementers and policy makers, and analysed using thematic analysis. Most rural community members interviewed had no knowledge of specific causes of diarrhoea or of the link between unsafe water and diarrhoeal diseases. They also practised inadequate or no methods of HWT. Although respondents were unaware of the use of M. oleifera seeds for HWT, community members and policymakers were keen on adopting it after observing demonstrations of its use for this purpose. Reasons for this behaviour change included easy accessibility to and a familiarity with M. oleifera for other uses. These results highlight the importance of providing health education on diarrhoea and water safety to motivate and empower community members to adopt healthy HWT behaviours. The use of M. oleifera seeds for HWT should be taught and advocated because it is a cheap, efficient and acceptable method of water purification for stakeholders.

scholarly journals Biosorption of Pb (II) and Zn (II) from aqueous solution by Oceanobacillus profundus isolated from an abandoned mine

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Wilson Mwandira ◽  
Kazunori Nakashima ◽  
Satoru Kawasaki ◽  
Allison Arabelo ◽  
Kawawa Banda ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ion Concentration ◽  
Contaminated Site ◽  
Lead Ion ◽  
Contaminated Water ◽  
Metal Chelation ◽  
Anthropogenic Contamination ◽  
Initial Concentration ◽  
Growth Ph ◽  
Maximum Removal

AbstractThe present study investigated biosorption of Pb (II) and Zn (II) using a heavy metal tolerant bacterium Oceanobacillus profundus KBZ 3-2 isolated from a contaminated site. The effects of process parameters such as effect on bacterial growth, pH and initial lead ion concentration were studied. The results showed that the maximum removal percentage for Pb (II) was 97% at an initial concentration of 50 mg/L whereas maximum removal percentage for Zn (II) was at 54% at an initial concentration of 2 mg/L obtained at pH 6 and 30 °C. The isolated bacteria were found to sequester both Pb (II) and Zn (II) in the extracellular polymeric substance (EPS). The EPS facilitates ion exchange and metal chelation-complexation by virtue of the existence of ionizable functional groups such as carboxyl, sulfate, and phosphate present in the protein and polysaccharides. Therefore, the use of indigenous bacteria in the remediation of contaminated water is an eco-friendly way of solving anthropogenic contamination.

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