OOIR: Observatory of International Research

Papers

(The H4-Index of Biochar is 30. 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 2022-05-01 to 2026-05-01.)

Article	Citations
Characterization of biochars from woody agricultural wastes and sorption behavior comparison of cadmium and atrazine	263
Wood waste biochar promoted anaerobic digestion of food waste: focusing on the characteristics of biochar and microbial community analysis	253
Biochar granulation reduces substrate erosion on green roofs	135
Sorption kinetics of 1,3,5-trinitrobenzene to biochars produced at various temperatures	118
Weak-acid biochar catalyst prepared from mechanochemically-activated biomass and humic acid for production of 5-hydroxymethylfurfural	109
Development of a new hydrophobic magnetic biochar for removing oil spills on the water surface	108
Simultaneous dissipation of trichloroethene and arsenic from co-contaminated groundwater by coupling biodechlorination and biodetoxification with assistance of biochar	80
The stability of carbon from a maize-derived hydrochar as a function of fractionation and hydrothermal carbonization temperature in a Podzol	72
Insights on mechanisms of aluminum phytotoxicity mitigation by canola straw biochars from different regions	72
A critical review of biochar-based nitrogen fertilizers and their effects on crop production and the environment	71
Formable porous biochar loaded with La-Fe(hydr)oxides/montmorillonite for efficient removal of phosphorus in wastewater: process and mechanisms	65
Pyrolytic synthesis of graphene-encapsulated zero-valent iron nanoparticles supported on biochar for heavy metal removal	63
Carbon-negative cement-bonded biochar particleboards	58
Photoactivation of peroxymonosulfate by wood pulp cellulose biochar/g-C3N4 composite for diclofenac degradation: the radical and nonradical pathways	51
A nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox-active moieties	51
p-Arsanilic acid decontamination over a wide pH range using biochar-supported manganese ferrite material as an effective persulfate catalyst: Performances and mechanisms	49
Arsenic removal from water and soils using pristine and modified biochars	48
Machine learning predicting and engineering the yield, N content, and specific surface area of biochar derived from pyrolysis of biomass	47
Biochar–microbe interaction: more protist research is needed	46
Biochar and organic substitution improved net ecosystem economic benefit in intensive vegetable production	45
Biochar mitigates the biotoxicity of heavy metals in livestock manure during composting	42
Removal performance, mechanisms, and influencing factors of biochar for air pollutants: a critical review	41
Use of sewage sludge biochar as a catalyst in production of biodiesel through thermally induced transesterification	41
Biochar amendment alters the partitioning of nitrate reduction by significantly enhancing DNRA in a paddy field	40
Anisotropic hemp-stem-derived biochar supported phase change materials with efficient solar-thermal energy conversion and storage	40

Design of a renewable hydroxyapatite-biocarbon composite for the removal of uranium(VI) with high-efficiency adsorption performance	39
Application of biochar-based photocatalysts for adsorption-(photo)degradation/reduction of environmental contaminants: mechanism, challenges and perspective	39
Stability and interaction of biochar and iron mineral nanoparticles: effect of pH, ionic strength, and dissolved organic matter	38
Insights into simultaneous adsorption and oxidation of antimonite [Sb(III)] by crawfish shell-derived biochar: spectroscopic investigation and theoretical calculations	37
Unravelling how biochar and dung amendments determine the functional structure and community assembly related to methane metabolisms in grassland soils	32
Long-term biochar addition significantly decreases rice rhizosphere available phosphorus and its release risk to the environment	30