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Among various water and wastewater treatment methods, adsorption techniques are widely used to remove certain classes of pollutants due to its unique features. Thus, the aim of this data article is to synthesize zero valent iron nanoparticles (NZVI) from Nettle leaf extract by green synthesis method as an environmentally friendly technique, and to evaluate it's efficiency in the removal of furfural from aqueous solutions. The data of possible adsorption mechanism and isotherm of furfural on the synthesized adsorbent are depicted in this data article. The data acquired showed that the adsorption trend follows the pseudo-second order kinetic model and that the Langmuir isotherm was suitable for correlation of equilibrium data with the maximum adsorption capacity of 454.4 mg/g. The information of initial furfural concentration, pH, adsorbent dosage and contact time effects on the removal efficiency are presented. Considering the findings data, the developed nanoparticle from Nettle leaf extract, as a low cost adsorbent, could be considered as promising adsorbent for furfural and probably similar organic pollutants removal from aqueous solutions.

The first cases of novel coronavirus disease (COVID-19) were reported in late December 2019 in Wuhan City, Hubei Province of China. It has spread rapidly around the world. Taking preventive measures by the public plays the most important role in infection prevention and control of the COVID-19. One of the major challenges in preventing and controlling COVID-19 has been the proliferation of misinformation on social media. In such a special epidemic, assessment of knowledge and attitude of the public will help to reduce the uncoordinated social behavior arising from misinformation. The purpose of this crosssectional online survey was to determine the level of knowledge, attitude and practice (KAP) of Iranian population toward outbreak of COVID-19. Data were collected by self-administrated questionnaire. Analytical statistics were performed on the results. The mean scores of respondents' KAP were 87.7, 59.3, and 89.6, respectively. Married and females participants, who work in healthcare systems, participants in the age group of 36 to 45 years with a higher level of education, and those who studied in the fields related to health gained significantly higher knowledge scores. Most respondents (63.7%) had a negative attitude towards the observance of appointed prevention principles by others. Also, the results showed a statistically significant positive correlation between all sections of KAP. Our findings suggest that despite the rapid dissemination of reliable and unreliable information about COVID-19 through cyberspace, the Iranian people have sufficient knowledge to deal with COVID-19 outbreak.

In this data article, we aimed to evaluate and compare the biological diversity and relative abundance of zooplankton communities in 3 different areas along the northern part of the Persian Gulf in 3 different seasons. Data showed that Centropages spp and Fish larvae were the highest and lowest species among the groups identified in summer in Lavare Saheli and Nakhle Taghi with relative abundances of 87% and 2.7% respectively. In winter, Cyphonautes larvae and Corycaeus spp. were the highest and lowest species in Kangan and Lavare Saheli with relative abundances of 57.1% and 1.88%, respectively. Also Decapoda larvae spp. and Gastropoda larvae were the highest and lowest species in spring in Kangan with relative abundances of 62.5% and 4.7% respectively. Data may serve as benchmarks for other groups working in the field of pollution control, aquatic ecosystem, and toxicology.