Dataset Information

Chitosan Coagulation Pretreatment to Enhance Ceramic Water Filtration for Household Water Treatment.

ABSTRACT: Viruses are major contributors to the annual 1.3 million deaths associated with the global burden of diarrheal disease morbidity and mortality. While household-level water treatment technologies reduce diarrheal illness, the majority of filtration technologies are ineffective in removing viruses due to their small size relative to filter pore size. In order to meet the WHO health-based tolerable risk target of 10-6 Disability Adjusted Life Years per person per year, a drinking water filter must achieve a 5 Log10 virus reduction. Ceramic pot water filters manufactured in developing countries typically achieve less than 1 Log10 virus reductions. In order to overcome the shortfall in virus removal efficiency in household water treatment filtration, we (1) evaluated the capacity of chitosan acetate and chitosan lactate, as a cationic coagulant pretreatment combined with ceramic water filtration to remove lab cultured and sewage derived viruses and bacteria in drinking waters, (2) optimized treatment conditions in waters of varying quality and (3) evaluated long-term continuous treatment over a 10-week experiment in surface waters. For each test condition, bacteria and virus concentrations were enumerated by culture methods for influent, controls, and treated effluent after chitosan pretreatment and ceramic water filtration. A > 5 Log10 reduction was achieved in treated effluent for E.coli, C. perfringens, sewage derived E. coli and total coliforms, MS2 coliphage, Qβ coliphage, ΦX174 coliphage, and sewage derived F+ and somatic coliphages.

SUBMITTER: Coleman CK

PROVIDER: S-EPMC8472054 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Chitosan Coagulation Pretreatment to Enhance Ceramic Water Filtration for Household Water Treatment.

Coleman Collin Knox CK Mai Eric E Miller Megan M Sharma Shalini S Williamson Clark C Oza Hemali H Holmes Eleanor E Lamer Marie M Ly Christopher C Stewart Jill J Sobsey Mark D MD Abebe Lydia S LS

International journal of molecular sciences 20210908 18

Viruses are major contributors to the annual 1.3 million deaths associated with the global burden of diarrheal disease morbidity and mortality. While household-level water treatment technologies reduce diarrheal illness, the majority of filtration technologies are ineffective in removing viruses due to their small size relative to filter pore size. In order to meet the WHO health-based tolerable risk target of 10<sup>-6</sup> Disability Adjusted Life Years per person per year, a drinking water f ...[more]

PMID: 34575900

Similar Datasets

Project description:Currently, millions of people are exposed to dangerous levels of chemical and biological water pollution in drinking water due to source contamination. The rising of populations and industrialization or agricultural wastewaters were causes of water contaminations. The aim of this study was to design, develop and performance evaluation of point of use drinking water purification technology using MoringaOleifera seed coupled followed by scoria coag-filtration media. Experimental laboratory based aquas solution of contaminated water was prepared for evaluations. Moringa Oleifera seed coagulation/flocculation and sedimentation tests were carried out using jar test with the batch experiment. The potential treatment of the sequential ordered unit process stages were evaluated by the determination of physicochemical parameters of the water; such as turbidity, Color, PO4-3, Fe+3 and F-concentration. The factor that affects the purification where coagulant doses, pH, and contact time. Based on this, the physicochemical parameter analysis indicated that turbidity from (150-8NTU), PO4-3 (20-5.95 mg/L), Fe+3 (7-2.93 mg/L) and F- (9-2.83 mg/L), Moringa Oleifera seed dose (10-40 mL/L) extract paste. The maximum pollutant removal efficiency was achieved at 35 mL/L of Moringa Oleifera seed extractdose, within 6.5-7.5 pH range. Then VSco filtration was conducted after jar test under small column experiment as a function of contact time (0, 2, 4 h s). The VSco removal capacity showed that the removal of turbidityfrom (8-2.54NTU), PO4-3 (5.95-1.07 mg/L), Fe+3 (2.93-0.43 mg/L) and F- (2.83-1.94 mg/L) were achieved after 4hr detention time. The percent removal of turbidity, PO4-3, Fe+3 and F- increases remarkably with increasing of their initial concentration. At an initial concentration of turbidity (150NTU), PO4-3 (20 mg/L), Fe+3 (7 mg/L) and F-(9 mg/L), the removal efficiency were 98%, 84%, 85% and 60% respectively. Therefore, we recommend Moringa Oleifera seed -Vscoas an economic, efficient and simple Point of Use drinking water treatment technology.

Dataset Information

Chitosan Coagulation Pretreatment to Enhance Ceramic Water Filtration for Household Water Treatment.

Publications

Chitosan Coagulation Pretreatment to Enhance Ceramic Water Filtration for Household Water Treatment.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets