Environmental science and engineering, Год журнала: 2022, Номер unknown, С. 533 - 560
Опубликована: Дек. 2, 2022
Язык: Английский
Environmental Technology & Innovation, Год журнала: 2021, Номер 25, С. 102114 - 102114
Опубликована: Ноя. 24, 2021
Arsenic is a highly toxic metalloid that extensively distributed in soils and water bodies, resulting variety of toxicity mechanisms harmful effects on humans environmental health. This paper comprehensively reviews the technological development arsenic (As) removal from wastewater contaminated soil, provides insights into challenges effective compartments. The efficiency available technologies also discussed terms their principle operation, efficiency, advantages, shortcomings. Many existing are not found economically feasible for regions interest or applicable at community level. Some techniques often responsible producing by-products. Overall, adsorption technique demonstrated high almost 100% maximum 95% removing respectively. Novel methods such as application nanotechnology polymeric ligand exchangers have been gaining traction but seem to possess limitations similar conventional non-conventional techniques.
Язык: Английский
Процитировано
203
Molecules, Год журнала: 2022, Номер 27(4), С. 1275 - 1275
Опубликована: Фев. 14, 2022
The presence of heavy metals in water bodies is linked to the increasing number industries and populations. This has serious consequences for quality human health environment. In accordance with this issue, wastewater treatment technologies including ion exchange, chemical extraction, hydrolysis should be conducted as a first purification stage. However, sequestration these toxic substances tends expensive, especially large scale methods that require tedious control have limited efficiency. Therefore, adsorption using adsorbents derived from biomass represent promising alternative due their great efficiency abundance. Algal seaweed appeared sustainable solution environmentally friendly adsorbent production. review further discusses recent developments use algal potential sorbent metal bioremediation. addition, relevant aspects like toxicity, mechanism, parameters affecting completion process are also highlighted. Overall, critical conclusion drawn algae can used sustainably eliminate wastewater.
Язык: Английский
Процитировано
145
Water, Год журнала: 2022, Номер 14(12), С. 1884 - 1884
Опубликована: Июнь 11, 2022
Arsenic poisoning constitutes a major threat to humans, causing various health problems. Almost everywhere across the world certain “hotspots” have been detected, putting in danger local populations, due potential consumption of water or food contaminated with elevated concentrations arsenic. According relevant studies, Asia shows highest percentage significantly sites, followed by North America, Europe, Africa, South America and Oceania. The presence arsenic ecosystems can originate from several natural anthropogenic activities. be then gradually accumulated different sources, such as vegetables, rice other crops, but also seafood, etc., sources (mainly groundwater, lesser extent surface water), potentially used drinking-water supplies, provoking their contamination therefore problems consumers. This review reports areas worldwide that present sources. Furthermore, it discusses at these well selected treatment technologies, aiming remove this pollutant mainly waters thus reduction prevention population towards exposure.
Язык: Английский
Процитировано
65
Process Safety and Environmental Protection, Год журнала: 2022, Номер 185, С. 108 - 118
Опубликована: Июнь 30, 2022
Arsenic is a concern for its ubiquity in the environment and accumulative toxic properties. Water often contaminated with this chemical, so developing simple, scalable, green water treatment technologies urgently needed. We show here that ability of L-Cysteine biomolecule to form complexes arsenic inspires use as natural bio-inspired sorbent develop advanced functional materials. establish first time way chemically anchor (L-Cys) inside highly hydrophilic nanofibers create membrane capable lowering As(V) concentration below WHO limit 10 μg/L. A homogeneous precursor mixture an aqueous solution PVA L-Cys (5 wt% respect PVA) was electrospun obtain nanofibrous membrane. Successful immobilization within achieved during heat at 190 °C. It occurs through esterification reactions between hydroxyl group on chain carboxylic acid L-Cys. sorption (as As(V)) assessed by batch experiments media controlled pH range. The maximum removal efficiency 7, supporting formation thiolate primary mechanism sorption. confinement makes diffusion rate-limiting process adsorption kinetics, following pseudo order equation. Overall, work establishes novel remediation strategy encourages research nature-mimicking adsorbents biodegradable polymers materials remediation.
Язык: Английский
Процитировано
37
ACS ES&T Water, Год журнала: 2023, Номер 3(6), С. 1429 - 1453
Опубликована: Янв. 30, 2023
Access to water, sanitation, and hygiene (WASH) has been a challenge south Asia's rapidly growing climate change-sensitive region. Nepal, water-abundant country, faces obstacles fulfilling the highly prioritized WASH Sustainable Development Goal 6 (SDG 6). This review offers details about Nepal's status from 2000 2020 with regard challenges Nepal had in delivering reliable services people, as well opportunities for sustainable way forward, provides insights that can be applied other developing countries. From analysis of national-level assessments, estimates point toward healthy progress extending access population. However, large inequalities persist at subnational level between urban rural residents, poor rich genders. Many local constraints such lack long-term infrastructural capacity provide maintain services, financial issues, institutional policy incompatibilities are some key factors technical considerations private sector involvement could address. We also propose roles central, provincial, governments identification adaptation undeniable risks change. Furthermore, there is need capitalize on potential much-needed robust climate-resilient safeguarding rights future generations safe clean water.
Язык: Английский
Процитировано
18
Chemosphere, Год журнала: 2022, Номер 306, С. 135581 - 135581
Опубликована: Июль 4, 2022
Язык: Английский
Процитировано
24
Environmental Science and Pollution Research, Год журнала: 2022, Номер 29(30), С. 45276 - 45291
Опубликована: Фев. 10, 2022
Язык: Английский
Процитировано
23
Elsevier eBooks, Год журнала: 2024, Номер unknown, С. 231 - 251
Опубликована: Янв. 1, 2024
Язык: Английский
Процитировано
4
Plants, Год журнала: 2023, Номер 12(22), С. 3816 - 3816
Опубликована: Ноя. 9, 2023
Rising waste construction, agricultural actions, and manufacturing sewages all contribute to heavy metal accumulation in water resources. Humans consume metals-contaminated substances make sustenance, which equally ends up the food circle. Cleaning of these vital properties, along with prevention new pollution, has long been required evade negative strength consequences. Most wastewater treatment techniques are widely acknowledged be costly out grasp governments small pollution mitigation businesses. Utilizing hyper-accumulator plants that extremely resilient metals environment/soil, phytoremediation is a practical promising method for eliminating from contaminated environments. This extracts, degrades, or detoxifies harmful using green plants. The three phytostabilization, phytoextraction, phytovolatilization have used extensively soil remediation. Regarding their ability on wide scale, conventional methods significant limitations. Hence, biotechnological attempts change investigated order increase plant effectiveness possible use improved approaches country India. review focuses advances significance accompanied by removal various contaminants. Similarly, sources, status India, impacts nature human health, variables influencing covered.
Язык: Английский
Процитировано
9
Journal of Hazardous Materials Advances, Год журнала: 2025, Номер unknown, С. 100595 - 100595
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0