#remediation — Public Fediverse posts

#Eggshells from agro-industrial waste for the recovery of #lime, #portlandite, and #calcite nanoparticles through the lime cycle: A circular economic approach

Highlights:

• The study proposes to obtain calcite (#CaCO3) from eggshell agro-industrial waste within a circular economy approach.
• The lime cycle can be used to transform calcite (CaCO3) into lime (CaO) or portlandite (Ca(OH)2).
• Eggshells contain trace elements that can aid in synthesizing materials for #EnvironmentalRemediation..

"Eggshells from agro-industrial waste can be used as natural source to obtain nanometric CaCO3, CaO, and Ca(OH)2 using the lime cycle. The nanometric size and the phase identification of all samples were confirmed by X-ray diffraction and FWHM. The SEM images show that CaCO3, CaO, and Ca(OH)2 from eggshells are microparticles in the form of nanocrystals, which correlate with the DLS results. The Zeta Potential varies due to the loss of CO2 when CaCO3 is converted in CaO, and for this reason, the CaO is more negative. When CaO is hydrated, the Ca(OH)2 is more stable, and these differences can be attributed to the mineral content in the samples. Eggshells naturally have different trace minerals that maintain a long calcium cycle and show variation due to a concentration effect when the CaCO3 changes to CaO. There is a notable a decrease of the trace minerals when CaO. When CaO is converted to Ca(OH)2, there is a significant decrease in trace minerals as some ions are soluble in the water during soaking. It is recommended to carry out the conversion of CaO to Ca(OH)2 under controlled conditions (low humidity and CO2). These findings can be useful to treat #AgroIndustrial waste and to develop nanotechnological applications in different fields."

Full article:
https://www.sciencedirect.com/science/article/pii/S2949839224000166

#SolarPunkSunday #CircularEconomy #ZeroWaste #NewTechnology #Remediation

🎙️ The #FIRSTImpressionsPodcast is back for the 2026 conference season!
Tune in to the newest episode at: https://media.first.org/podcasts/FIRST_Impressions-MorLior.mp3

In this episode, podcasters interview Mor Weinberger and Lior Kaplan to preview their #FIRSTCON26 session: “From Discovery to Fix: What 10,000 Open Source Projects Reveal About CVE Remediation”

The conversation dives into:
🔹 Why 90% of #CVEs already have fixes available
🔹 Why #remediation still takes months
🔹 How AI is accelerating vulnerability discovery
🔹 The hidden complexity of open source supply chains
🔹 Practical ways organizations can reduce risk today

New episodes drop every Friday leading up to FIRSTCON, featuring previews of conference talks and conversations with presenters across the global incident response community.

📍FIRST Conference 2026
June 14–19 | Denver, Colorado

Secure your seat today: https://www.first.org/conference/2026/registration

#FIRSTCON26 #CyberSecurity #OpenSource #VulnerabilityManagement #CVE #DevSecOps #SupplyChainSecurity

#Sweden - Removal of #PFAS from water by #AquaticPlants

Maria Greger, Tommy Landberg
February, 2024

Highlights

• High total biomass is important plant trait for high PFAS accumulation from water.
• Higher PFAS accumulation in shoot than roots with time.
• Degradation of PFAS with root peroxidases and laccases.

Abstract:

"We have found that aquatic plants can reduce the content of perfluorinated alkyl substances (PFAS) within a short period of time. The aim of this study was to determine the variation in the uptake of PFAS from contaminated water by various #wetland plant species, investigate the effect of #biomass on PFAS removal, and determine whether laccases and peroxidases are involved in the removal and degradation of PFAS. Seventeen emergent and one submerged wetland plant species were screened for PFAS uptake from highly contaminated lake water. The screening showed that #EriophorumAngustifolium, #CarexRostrata, and #ElodeaCanadensis accumulated the highest levels of all PFAS. These species were thereafter used to investigate the effect of biomass on PFAS removal from water and for the enzyme studies. The results showed that the greater the biomass per volume, the greater the PFAS removal effect. The plant-based removal of PFAS from water is mainly due to plant absorption, although degradation also occurs. In the beginning, most of the PFAS accumulated in the roots; over time, more was translocated to the shoots, resulting in a higher concentration in the shoots than in the roots. Most PFAS degradation occurred in the water; the metabolites were thereafter taken up by the plants and were accumulated in the roots and shoots. Both peroxidases and laccases were able to degrade PFAS. We conclude that wetland plants can be used for the purification of PFAS-contaminated water. For effective purification, a high biomass per volume of water is required."

Read more:
https://www.sciencedirect.com/science/article/pii/S030147972302683X

#SolarPunkSunday #PFAScontamination #ForeverChemicals #PollutionSolutions #WaterIsLife #PFASPollution #Remediation #PFASRemoval #PFASRemediation

Legacy Mercury Contamination From Historical Gold Mining - A Visualization Tool For Spatial Data On Sediment, Water, And Biota In The Sierra Nevada, California
--
https://ca.water.usgs.gov/sierra-mercury/ <-- shared technical article / storybook
--
https://doi.org/10.5066/P9EL0UN9 <-- shared USGS technical report
--
https://www.pbssocal.org/shows/earth-focus/mercury-in-our-waters-the-10-000-year-legacy-of-californias-gold-rush <-- shared media article
--
#GIS #spatial #mapping #water #hydrology #sediment #biota #ecosystems #spatialanalysis #sampling #mercury #gold #goldmining #history #SierraNevada #goldrush #California #USA #contamination #humanimpacts #waterquality #hydraulicmining #minewaste #environment #methylmercury #watersecurity #publichealth #transportation #uptake #bioaccumulation #landmanagement #hotspots #remediation #ecology #mining
@USGS

Detecting vulnerable code in software dependencies is more complex than it seems https://www.helpnetsecurity.com/2024/09/18/henrik-plate-endor-labs-vulnerable-code-software-dependencies/ #vulnerabilitymanagement #cybersecurity #codeanalysis #remediation #opensource #Don'tmiss #EndorLabs #Features #Hotstuff #software #opinion #News #code #SCA

Collin Ward (#WHOI) spoke to us today about the lessons learned from the 2010 Deepwater Horizon oil spill in the Gulf of Mexico: particularly the speed and extent of photochemical oxidation of crude oil. This is what turns the oil into sticky emulsified globs on the beaches.
#McGillUniversity #OilSpill #Remediation #EarthSystemScience

Two species of #bacteria, Desulfovibrio aminophilus and Sporomusa sphaeroides, have been discovered to have the ability to digest some polyfluoroalkyl substances (#PFAS), specifically chlorinated PFAS.

https://e360.yale.edu/digest/bacteria-break-down-pfas-forever-chemicals

The article references this resesarch paper: https://www.nature.com/articles/s44221-023-00077-6

#pollution #remediation #EnvironmentalRemediation #environment #ForeverChemicals #contamination #bioremediation #groundwater #SoilScience #biodegradation