Ecotoxicological and Genotoxic Assessment of Hospital Laundry Wastewaters

Kern, Deivid Ismael; Schwaickhardt, Rômulo de Oliveira; Lütterbeck, Carlos Alexandre; Kist, Lourdes Teresinha; Alcayaga, Eduardo Alexis Lobo; Machado, Ênio Leandro

doi:10.1007/s00244-014-0072-0

“…Several studies have reported the high incidence of these coliforms in wastewater from hospital laundries. 37,66,75 In this sense, the scientific community reports several cases of infection in hospital laundries: 65 rotaviruses, Clostridium difficile, 49,51,61 influenza virus (H1N1), 73 Streptococcus spp., 182 Enterococcus spp., 70,71 Acinetobacter spp., 69 Staphylococcus spp., 68,183 Pseudomonas, 67 Bacillus spp. 54 and hepatitis A virus.…”

Section: Characterization Of Laundry Effluentsmentioning

confidence: 99%

Use of Natural Coagulants/Flocculants in the Treatment of Hospital Laundry Effluents

Abreu¹,

Montel²,

Scapin³

2020

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0

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Water is a fundamental substance for the existence of life on earth. However, globally there is a freshwater crisis. Hospitals generate exorbitant volumes of effluents (5 to 15 times more toxic than urban ones). Hospital laundry is known for demanding the highest volumes of water, generating a proportional amount of complex effluents with high toxicity and recalcitrance. Adequate treatment for hospital wastewater is always an essential solution. Among all treatment methods, coagulation/flocculation emerges as one of the best alternatives. However, the use of traditional compounds such as aluminium sulfate has caused secondary pollution; its residues are harmful to public and environmental health. In this sense, the present study used natural compounds that do not cause adverse effects, such as chitosan/hydroxyapatite, to clarify the laundry effluents of the largest hospital from the Tocantins. The results showed that the hydroxyapatite associated with chitosan, at pH 6 and dosage of 50 mg/L, reduced the turbidity and apparent colour of these wastewaters by up to 67 and 55%, respectively. With lower performance and higher dosage (60 mg/L), the chitosan gel used (pH 6) promoted a maximum reduction of 35% of the apparent colour and 40% of turbidity.

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“…Because many drugs contain estrogen substances, such as Nilestriol Tablets, estradiol, estradiol valerate, estradiol benzoate and so on. Potential chemicals can be released into wastewater through human excretion, consumed pharmaceuticals, abstergents used, and medical devices utilized [6][7][8]. Estrone (E1), estradiol (E2), and estriol (E3) are excreted in urine and feces as conjugated estrogens, which could be restored into parent chemicals via microbial actions [9,10].…”

Section: Potential Chemicals In Hwwmentioning

confidence: 99%

Research Advancements in Ozone Treatment for Estrogenic Activities in Hospital Wastewater

Zhao¹,

Weilian²,

Chen³

et al. 2017

JRST

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hospital wastewater (hWW) is a source of estrogenic activity compounds in the environmental water system. once released into water bodies, these compounds disrupt the aquatic ecological balance and even affect human health. on the basis of domestic and foreign literature, the potential chemicals and their properties, such as construction features and toxicological effects, in hWW were summarized and discussed. The advantages of ozone in removing target substances were also summarized.

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“…9 However, tissues from different areas such as the operating room, intensive care unit, hospitalization, hemodialysis, imaging, emergency room, among others, are sources of dirt such as blood, pus, medication residues, secretions and excretions, [61][62][63][64] which can contain pathogenic bacteria, 49,51,71,54,61,[65][66][67][68][69][70] fungi or viruses. 56,[72][73][74] Besides, a high concentration of particulate material, organic matter, proteins, starch, oils and greases 40,75 can be found.…”

Section: Introductionmentioning

confidence: 99%

Use of Natural Coagulants/Flocculants in the Treatment of Hospital Laundry Effluents

Abreu¹,

Montel²,

Scapin³

2020

Preprint

1

0

View full text Add to dashboard Cite

Water is a fundamental substance for the existence of life on earth. However, globally there is a freshwater crisis. Hospitals generate exorbitant volumes of effluents (5 to 15 times more toxic than urban ones). Hospital laundry is known for demanding the highest volumes of water, generating a proportional amount of complex effluents with high toxicity and recalcitrance. Adequate treatment for hospital wastewater is always an essential solution. Among all treatment methods, coagulation/flocculation emerges as one of the best alternatives. However, the use of traditional compounds such as aluminium sulfate has caused secondary pollution; its residues are harmful to public and environmental health. In this sense, the present study used natural compounds that do not cause adverse effects, such as chitosan/hydroxyapatite, to clarify the laundry effluents of the largest hospital from the Tocantins. The results showed that the hydroxyapatite associated with chitosan, at pH 6 and dosage of 50 mg/L, reduced the turbidity and apparent colour of these wastewaters by up to 67 and 55%, respectively. With lower performance and higher dosage (60 mg/L), the chitosan gel used (pH 6) promoted a maximum reduction of 35% of the apparent colour and 40% of turbidity.

show abstract

Ecotoxicological and Genotoxic Assessment of Hospital Laundry Wastewaters

Cited by 22 publications

References 39 publications

Use of Natural Coagulants/Flocculants in the Treatment of Hospital Laundry Effluents

Use of Natural Coagulants/Flocculants in the Treatment of Hospital Laundry Effluents

Research Advancements in Ozone Treatment for Estrogenic Activities in Hospital Wastewater

Use of Natural Coagulants/Flocculants in the Treatment of Hospital Laundry Effluents

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