South African local government perceptions of the state of water security

Meissner, Richard; Steyn, Michael; Moyo, Elliot S; Shadung, Justinus; Masangane, Winile; Nohayi, Ngowenani; Jacobs-Mata, Inga M

doi:10.1016/j.envsci.2018.05.020

Cited by 20 publications

(9 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…South Africa is a semi-arid region which obtains minimal amount of rain annually. In lieu of this and with the incessant shortages of portable and clean water in the country, most inhabitants, especially in the rural areas have resorted to different alternatives for water sources such as river and dams for their routine domestic activities ( Meissner et al., 2018 ). Additionally, the upsurge in various informal settlements around the country as well as the present poor conditions of some wastewater treatment plants have significantly contributed to the diminished quality of water sources found in most of the rural areas ( Govender et al., 2011 ).…”

Section: Discussionmentioning

confidence: 99%

Virulence and Antibiotic Resistance Characteristics of Vibrio Isolates From Rustic Environmental Freshwaters

Gxalo

Digban

Igere

et al. 2021

Front. Cell. Infect. Microbiol.

View full text Add to dashboard Cite

The study investigated the occurrence of antimicrobial resistance genes and virulence determinants in Vibrio species recovered from different freshwater sheds in rustic milieu. A total of 118 Vibrio isolates comprising Vibrio fluvialis (n=41), Vibrio mimicus (n=40) and V. vulnificus (n=37) was identified by amplification of ToxR, vmh and hsp60 genes. The amplification of virulence genes indicated that V. mimicus (toxR, zot, ctx, VPI, and ompU) genes were detected in 12.5%, 32.5%, 45%, 37.5% and 10% respectively. V. fluvialis genes (stn, hupO and vfh) were harboured in 48.8%, 14.6% and 19.5% isolates congruently. The other virulence genes that include vcgC and vcgE were observed in 63.1% and 29% of isolates belonging to V. vulnificus. With the exceptions of imipenem, meropenem and ciprofloxacin, most isolates exhibited more than 50% resistance to antibiotics. The antimicrobial resistance was more prevalent for polymyxin B (100%), azithromycin (100%) and least in ciprofloxacin (16.1%). Multiple antibiotic resistance index range was 0.3 and 0.8 with most isolates showing MARI of 0.8. The blaTEM, AmpC, blaGES, blaIMP, blaOXA-48 and blaKPC genes were detected in 53.3%, 42%, 29.6%, 16.6%, 15%, 11.3% and 5.6% of the isolates. Non-beta lactamases such as streptomycin resistance (aadA and strA), gentamicin resistance (aphA1) and quinolone resistance gene (qnrVC) were found in 5.2%, 44.3%, 26% and 2.8%. Chloramphenicol resistance genes (cmlA1 and catII) were found in 5.2% and 44.3% among the isolates. Our findings reveal the presence of antimicrobial resistance genes and virulent Vibrio species in aquatic environment which can have potential risk to human and animal’s health.

show abstract

Section: Discussionmentioning

confidence: 99%

Virulence and Antibiotic Resistance Characteristics of Vibrio Isolates From Rustic Environmental Freshwaters

Gxalo

Digban

Igere

et al. 2021

Front. Cell. Infect. Microbiol.

View full text Add to dashboard Cite

show abstract

“…This group was linked to the London Water Research Group directed by Anthony Allan, exchanging views and sharing research interests, for instance about the Lesotho Highlands Water Project (Mirumachi, 2015; Mirumachi & Van Wyk, ). Ex‐members of the AWIRU are still active today, as shown by the publications of R. Meissner () and R. Meissner et al (); Meissner, Steyn, Moyo, Shadung, and Jacobs‐Mata () for example.…”

Section: Panorama Of the “Politics Of Water” In Southern Africamentioning

confidence: 99%

Political ecologies of water in South Africa: A literature review

Bourblanc

Blanchon

2019

WIREs Water

View full text Add to dashboard Cite

Given the existence of a thriving epistemic community on water sciences, the high politicization of environmental issues in the country as well as the active mobilization of a grassroot movement inspired by environmental justice, South Africa appears to be an ideal case to study the development of a political ecology (PE) approach. Moreover, since the apartheid regime, water issues have long represented a marker of extreme inequality.This paper aims at drawing a panorama of the PE of water in South Africa, its main topics and approaches. In our definition, the PE of water is concerned with human-environment relations, with explicit considerations for power relations. In the first section, we identified texts that, according to this definition, constitute the core of the PE of water in South Africa, going beyond a mere "politics of water." In the second section and in the discussion, we undertook an in-depth analysis of the main topics addressed by authors, such as environmental flows, "free basic water policy," prepaid water meters. PE of water is strongly connected to international debates about the link between water and power, but also capable of addressing in a critical way the specificities of the South African waterscape. It stems from this review that critical PE in urban settings in particular dominates the discipline. We could also note that the PE of water in rural areas tends to put a bigger emphasis on the "politics of ecology" whereas urban PE tends to focus more on the "ecology in politics," although both thrive to examine the human-environment relations in an integrated manner.

show abstract

“…With a minimal 500 mm average annual rainfall, South Africa is included on a list of the 40 countries that are said to be the aridest in the world [1]. In addition to water scarcity, contamination of the water supply available in South Africa can further limit the supply of water in the country, leading to dire consequences for both living organisms and the environment [2].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Selected Heavy and Precious Metals from Simulated Wastewater Using Fabricated Polyacrylonitrile (PAN) and Poly(4-Vinylpyridine) (P4VP) Monoliths

Liebenberg¹,

Ambushe²,

Zinyemba³

2021

Minerals

View full text Add to dashboard Cite

Adsorption has become an attractive method for the extraction and recovery of metals from wastewater effluents. This study involved the fabrication of mesoporous neat polyacrylonitrile (PAN) monoliths and composite polymer monoliths of PAN and poly-4-vinylpyridine (P4VP) as adsorbents for toxic elements (As(V), Cr(VI)) and the recovery of PGMs(Ru(III), Rh(III), Pd(II)) from simulated wastewater solutions. Fabrication of the mesoporous polymer monoliths was conducted using the non-solvent induced phase separation method (NIPS). The monoliths were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and Brunauer–Emmett–Teller (BET). Adsorption studies were conducted using crushed monoliths saturated in 1 mg·L−1 simulated wastewater solutions. Spectroscopic analyses of the resulting filtrates were conducted using inductively coupled plasma-optical emission spectrometry (ICP-OES). In this study, the NIPS method was successfully optimized and mesoporous PAN, as well as composite polymer monoliths, were successfully fabricated. A concentration of 1 mg·L−1 of Ru(III) and Pd(II) was completely adsorbed by both monoliths. The mesoporous composite polymer monoliths exhibited the highest adsorption capacity for Rh(III), As(V), and Cr(VI). The mesoporous polymer monoliths showed great potential for use as wastewater cleaning aids as well as remediators of precious metals.

show abstract

South African local government perceptions of the state of water security

Cited by 20 publications

References 11 publications

Virulence and Antibiotic Resistance Characteristics of Vibrio Isolates From Rustic Environmental Freshwaters

Virulence and Antibiotic Resistance Characteristics of Vibrio Isolates From Rustic Environmental Freshwaters

Political ecologies of water in South Africa: A literature review

Adsorption of Selected Heavy and Precious Metals from Simulated Wastewater Using Fabricated Polyacrylonitrile (PAN) and Poly(4-Vinylpyridine) (P4VP) Monoliths

Contact Info

Product

Resources

About