Water innovation in South Africa: Mapping innovation successes and diffusion constraints

Habiyaremye, Alexis

doi:10.1016/j.envsci.2020.08.011

Cited by 19 publications

(6 citation statements)

References 33 publications

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“…Research endeavors linking innovation to the wider challenges of looming water-shortage can contribute to generating additional insights for speeding up water innovation uptake [20]. is study presents a new simple and innovative method of drawing water from the air.…”

Section: Objective and Novelty Of The Projectmentioning

confidence: 99%

Experimental Investigation of a Novel Extracting Water System from Air by Soil Cold Source

Yao

Wang

Zhu

et al. 2021

Mathematical Problems in Engineering

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The distribution of fresh water resources is extremely uneven at home and abroad, and the air contains a large amount of water vapor that can be used, so air water has been a widespread concern. Air condensation method is simple and efficient and has strong water intake capacity, but it often needs to consume huge energy. Therefore, this work proposes a new simple and innovative method of drawing water from the air, based on extracting water from air process achieved by using the soil as the cold source. The new type of ground cold air water intake system is designed by the new innovative method, which uses the soil with constant temperature as the cold source to reduce energy consumption. By comparing the central composite design experiment with the field experiment and analyzing the condensate water and outlet temperature under different wind speed and humidity conditions, the quadratic equation expression of condensate water and outlet temperature is obtained, and the optimal import wind speed range under a certain humidity range is obtained according to the mathematical model. The experimental results show that the heat transfer effect between air and soil is ideal, the water intake can reach 2.2 kg in 20-hour continuous collection experiment, the air temperature is close to the soil temperature after cooling, and the effect of water intake is good, which confirms the feasibility of soil as a cold source of air condensation.

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Section: Objective and Novelty Of The Projectmentioning

confidence: 99%

Experimental Investigation of a Novel Extracting Water System from Air by Soil Cold Source

Yao

Wang

Zhu

et al. 2021

Mathematical Problems in Engineering

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“…In addition, Ahmed et al (2023), Habiyaremye (2020), Haryadi & Nastiti (2020), Lee & Mwebaza (2021) have conducted in-depth studies on water resource management in small islands with an approach focusing on the development of innovative water technology and infrastructure. The main focus of these studies is to introduce and optimize various technological solutions that can be well-adapted to the unique conditions of small islands.…”

Section: Introductionmentioning

confidence: 99%

“…Among the solutions researched are desalination technologies, aimed at converting seawater into freshwater that can be widely utilized (Lee & Mwebaza, 2021). Additionally, Ahmed et al (2023) also emphasize the development of efficient rainwater management systems, smart water distribution systems capable of allocating water resources optimally (Haryadi & Nastiti, 2020), and innovative water storage technologies such as reservoirs and underground tanks (Habiyaremye, 2020). Furthermore, the research also covers the development of efficient irrigation technologies, aimed at enhancing agricultural productivity while minimizing water wastage.…”

Section: Introductionmentioning

confidence: 99%

Water Resources Management In Small Islands: A Review of Public Policy Implementation In The Development of Lekloor Reservoir, Nomaha Island

Rumihin

2024

baileofisip

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Water scarcity in small island regions, including Kisar Island in Maluku, presents a pressing issue due to inadequate water resource management. This article aims to describe a holistic approach to addressing the challenges of water resource management and water scarcity on Kisar Island, Maluku. The research methodology employed is a mixed-method approach, combining technical feasibility studies for reservoir technology, policy analysis through literature reviews, and field assessments to evaluate the topographic, hydrological, and environmental conditions of Kisar Island. In the technical context, the article analyzes reservoir technology as a solution to address water issues, supported by the topographic and hydrological characteristics of Kisar Island. Additionally, the article examines relevant public policies, such as Government Regulation No. 7 of 2013 on National Spatial Planning, Provincial Regulation No. 16 of 2013 on Provincial Spatial Planning in Maluku, and District Regulation No. 1 of 2023 on District Spatial Planning in Maluku Barat Daya. Through this review, the article highlights the crucial role of policy in establishing a supportive framework for water resource management. Furthermore, the importance of local community participation in water resource management on Kisar Island is emphasized, asserting that active engagement from the local community is key to achieving success in sustainable water management efforts.

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“…There has been a continuous increase in populations, development, urbanization, and industrialization in the world 1 . These human-derived factors impact the availability of fresh water resources 2 .…”

Section: Introductionmentioning

confidence: 99%

Novel composite materials of modified roasted date pits using ferrocyanides for the recovery of lithium ions from seawater reverse osmosis brine

Al-Absi

Abu-Dieyeh

Ben‐Hamadou

et al. 2021

Sci Rep

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In this paper, novel composite materials from modified roasted date pits using ferrocyanides were developed and investigated for the recovery of lithium ions (Li+) from seawater reverse osmosis (RO) brine. Two composite materials were prepared from roasted date pits (RDP) as supporting material, namely potassium copper hexacyanoferrate-date pits composite (RDP-FC-Cu), and potassium nickel hexacyanoferrate-date pits composite (RDP-FC-Ni). The physiochemical characterization of the RO brine revealed that it contained a variety of metals and salts such as strontium, zinc, lithium, and sodium chlorides. RDP-FC-Cu and RDP-FC-Ni exhibited enhanced chemical and physical characteristics than RDP. The optimum pH, which attained the highest adsorption removal (%) for all adsorbents, was at pH 6. In addition, the highest adsorption capacities for the adsorbents were observed at the initial lithium concentration of 100 mg/L. The BET surface area analysis confirmed the increase in the total surface area of the prepared composites from 2.518 m2/g for RDP to 4.758 m2/g for RDP-FC-Cu and 5.262 m2/g for RDP-FC-Ni. A strong sharp infrared peak appeared for the RDP-FC-Cu and RDP-FC-Ni at 2078 cm−1. This peak corresponds to the C≡N bond, which indicates the presence of potassium hexacyanoferrate, K4[Fe(CN)6]. The adsorption removal of lithium at a variety of pH ranges was the highest for RDP-FC-Cu followed by RDP-FC-Ni and RDP. The continuous increase in the adsorption capacity for lithium with increasing initial lithium concentrations was also observed. This could be mainly attributed to enhance and increased lithium mass transfer onto the available adsorption active sites on the adsorbents’ surface. The differences in the adsorption in terms of percent adsorption removal were clear and significant between the three adsorbents (P value < 0.05). All adsorbents in the study showed a high lithium desorption percentage as high as 99%. Both composites achieved full recoveries of lithium from the RO brine sample despite the presence of various other competing ions.

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Water innovation in South Africa: Mapping innovation successes and diffusion constraints

Cited by 19 publications

References 33 publications

Experimental Investigation of a Novel Extracting Water System from Air by Soil Cold Source

Experimental Investigation of a Novel Extracting Water System from Air by Soil Cold Source

Water Resources Management In Small Islands: A Review of Public Policy Implementation In The Development of Lekloor Reservoir, Nomaha Island

Novel composite materials of modified roasted date pits using ferrocyanides for the recovery of lithium ions from seawater reverse osmosis brine

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