OOIR: Observatory of International Research

Papers

(The H4-Index of Biochar is 34. 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 2021-08-01 to 2025-08-01.)

Article	Citations
Predicting the effect of dissolved humic acid on sorption of benzotriazole to biochar	462
Silicate minerals control the potential uses of phosphorus-laden mineral-engineered biochar as phosphorus fertilizers	323
Seven years of biochar amendment has a negligible effect on soil available P and a progressive effect on organic C in paddy soils	208
Poultry litter biochar application in combination with chemical fertilizer and Azolla green manure improves rice grain yield and nitrogen use efficiency in paddy soil	197
Characterization of biochars from woody agricultural wastes and sorption behavior comparison of cadmium and atrazine	173
Wood waste biochar promoted anaerobic digestion of food waste: focusing on the characteristics of biochar and microbial community analysis	160
Biochar granulation reduces substrate erosion on green roofs	106
Nitrogen-doped biochars as adsorbents for mitigation of heavy metals and organics from water: a review	106
Post-processing of biochars to enhance plant growth responses: a review and meta-analysis	101
Sorption kinetics of 1,3,5-trinitrobenzene to biochars produced at various temperatures	100
Weak-acid biochar catalyst prepared from mechanochemically-activated biomass and humic acid for production of 5-hydroxymethylfurfural	98
Development of a new hydrophobic magnetic biochar for removing oil spills on the water surface	88
Simultaneous dissipation of trichloroethene and arsenic from co-contaminated groundwater by coupling biodechlorination and biodetoxification with assistance of biochar	79
The stability of carbon from a maize-derived hydrochar as a function of fractionation and hydrothermal carbonization temperature in a Podzol	73
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	62
Method to characterize color of biochar and its prediction with biochar yield as model property	60
Formable porous biochar loaded with La-Fe(hydr)oxides/montmorillonite for efficient removal of phosphorus in wastewater: process and mechanisms	60
Pyrolytic synthesis of graphene-encapsulated zero-valent iron nanoparticles supported on biochar for heavy metal removal	57
Carbon-negative cement-bonded biochar particleboards	55
A nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox-active moieties	51
Visualizing the development trend and research frontiers of biochar in 2020: a scientometric perspective	50
Biochar addition to vineyard soils: effects on soil functions, grape yield and wine quality	49
Effects of low molecular weight organic acids on aggregation behavior of biochar colloids at acid and neutral conditions	47
Photoactivation of peroxymonosulfate by wood pulp cellulose biochar/g-C3N4 composite for diclofenac degradation: the radical and nonradical pathways	46

p-Arsanilic acid decontamination over a wide pH range using biochar-supported manganese ferrite material as an effective persulfate catalyst: Performances and mechanisms	44
Arsenic removal from water and soils using pristine and modified biochars	42
Machine learning predicting and engineering the yield, N content, and specific surface area of biochar derived from pyrolysis of biomass	41
Biochar-induced changes in the soil diazotroph community abundance and structure in a peanut field trial	41
Biochar applications influence soil physical and chemical properties, microbial diversity, and crop productivity: a meta-analysis	37
Bamboo biochar greater enhanced Cd/Zn accumulation in Salix psammophila under non-flooded soil compared with flooded	37
Removal of toxic elements from aqueous environments using nano zero-valent iron- and iron oxide-modified biochar: a review	36
Biochar–microbe interaction: more protist research is needed	36
Biochar and organic substitution improved net ecosystem economic benefit in intensive vegetable production	34
Biochar mitigates the biotoxicity of heavy metals in livestock manure during composting	34