OOIR: Observatory of International Research

Papers

(The H4-Index of Water Research X is 22. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-11-01 to 2025-11-01.)

Article	Citations
Effects of functional groups of polyfluoroalkyl substances on their removal by nanofiltration	129
Staggered supply of ferric citrate and oxygen as electron acceptors promote the co-recovery of vivianite and bioplastics PHB from wastewater	119
Evaluation of the process performance of comammox-like nitrospira dominant down-flow hanging sponge reactor with reduced nitrous oxide emissions	75
Mechanism insight into the facet-dependent photoaging of polystyrene microplastics on hematite in freshwater	71
Disinfection byproducts formed during drinking water treatment reveal an export control point for dissolved organic matter in a subalpine headwater stream	58
Efficient and sustainable removal of linear alkylbenzene sulfonate in a membrane biofilm: Oxygen supply dosage impacts mineralization pathway	55
Aquacultural source of nitrous oxide revealed by nitrogen isotopes	47
Start-up of a full-scale two-stage partial nitritation/anammox (PN/A) process treating reject water from high solid anaerobic sludge digestion (HSAD)	46
Emerging and legacy organophosphate flame retardants in the tropical estuarine food web: Do they exhibit similar bioaccumulation patterns, trophic partitioning and dietary exposure?	44
Making waves: Public health risks from arsenic in Mexico's water extraction practices	43
Gravity-driven membrane filtration with compact second-life modules daily backwashed: An alternative to conventional ultrafiltration for centralized facilities	40
A novel approach for accurate quantification of lake residence time — Lake Kinneret as a case study	36
Making waves: A vision for digital water utilities	36
Opportunities and challenges of tackling Scope 3 “Indirect” emissions from residential hot water	34
Treatment of burned soil leachates by ultrafiltration coupled with coagulation: Insights into membrane fouling	34
Spatial-economic scenarios to increase resilience to urban flooding	34
Nanoplastics are significantly different from microplastics in urban waters	34
Evaluating energy balance and environmental footprint of sludge management in BRICS countries	29
Removal of soluble divalent manganese by superfine powdered activated carbon and free chlorine: Development and application of a simple kinetic model of mass transfer–catalytic surface oxidation	24
Making Waves: A research agenda for supporting a WASH sustainability transformations approach to climate change	24
An integrated strategy for sequential nitrite removal and methane recovery: Sludge fermentation driven by nitrite reduction	23
Modulation of ultrathin nanosheet structure and nitrogen defects in graphitic carbon nitride for efficient photocatalytic bacterial inactivation	22
Effectiveness of three machine learning models for prediction of daily streamflow and uncertainty assessment	22
Mechanisms of N2O production in salinity-adapted partial nitritation systems for high-ammonia wastewater treatment	22