Pb(ΙΙ), Cd(ΙΙ), and Mn(ΙΙ) adsorption onto pruning-derived biochar: physicochemical characterization, modeling and application in real landfill leachate.

The aim of this study was to systemically evaluate how different pyrolysis temperatures (400, 550, and 700 °C) and particle sizes (1-2 mm and 63-75 µm) were influenced biochar evolution, made from urban pruning waste, during pyrolysis process and to establish their relationships with biochar potential for removal of lead (Pb), cadmium (Cd), and manganese (Mn) from real municipal solid waste landfill leachate. The effects of pH (2-7), contact time (30-300 min) and adsorbent dosage (0.1-5 g L) on heavy metals removal were also examined.

Effect of forest-based biochar on maturity indices and bio-availability of heavy metals during the composting process of organic fraction of municipal solid waste (OFMSW).

The main objective of this study was to investigate the effect of biochar on the composting process of the organic fraction of municipal solid waste (OFMSW) under real conditions. Different doses of biochar (1%, 3%, and 5%) were mixed with compost piles to evaluate the variation of temperature, moisture content (MC), organic matter (OM), carbon (C), nitrogen (N), C/N ratio, and heavy metal (HM) contents in comparison with the control treatment (with 0% biochar addition). The results of this study showed that the compost piles combined with different doses of biochar had higher MC.

A survey of Knowledge, attitudes, and practices of Tehran residents regarding solid waste management in the COVID-19 era.

This study aimed to investigate the knowledge, attitude, and practice (KAP) of residents in Tehran City towards municipal solid waste management (MSWM) after the Corona Virus Disease 2019 caused by SARS-CoV-2 (COVID-19) epidemic, which has been tended for the first time in this research. The study was conducted in Tehran, Iran from August 2021 to March 2022. The study population consisted of 385 participants drawn from 22 urban areas in Tehran.

Emanating challenges in urban and healthcare waste management in Isfahan, Iran after the outbreak of COVID-19.

This study aims to investigate the emanating challenges in urban and healthcare waste management in Isfahan, after the new Coronavirus outbreak. Production of 'dry wastes' in Isfahan, with a population of more than 1.9 million, has increased during the pandemic.

Environmental impacts of new Coronavirus outbreak in Iran with an emphasis on waste management sector.

The COVID-19 pandemic have brought several environmental problems worldwide, among which management of municipal solid wastes (MSW) is of great importance due to the effects of solid wastes on soil, air and water resources. This research focused on the emerging challenges in MSW management in Tehran, the capital of Iran, during the COVID-19 pandemic. Tehran has been experiencing higher generation of MSW during the pandemic.

Emerging challenges in urban waste management in Tehran, Iran during the COVID-19 pandemic.

•New challenges in MSW management in Tehran after the COVID-19 pandemic was studied.•Over 5.5 millions of PPEs are being daily discarded in Tehran during COVID-19.

Co-application of biochar and titanium dioxide nanoparticles to promote remediation of antimony from soil by : metal uptake and plant response.

Association of titanium dioxide nanoparticles (TiO NPs) and biochar (BC) to assist phytoremediation of Sb contaminated soil was investigated in this study. Seedlings of were exposed to different regimes of TiO NPs (0, 100, 250 and 500 mg kg) and BC (0, 2.5% and 5%), separately and in combination, to investigate the effects on plant growth, Sb absorption and accumulation and physiological response of the plant in Sb contaminated soil.

Phytoremediation: Data on effects of titanium dioxide nanoparticles on phytoremediation of antimony polluted soil.

This data article presents effects of titanium dioxide nanoparticles (TiO NPs) on phytoremediation of antimony contaminated soil using Bicolor in detail. Seedlings of were exposed to different doses of TiO NPs (0,50,100,250,500 and 1000 mg/kg) in plastic pots containing Sb-contaminated soil and cultivated over a 80-day period in a greenhouse. Harvested plants were dried in an oven at 70 °C for 48 h to obtain dry weight of the biomass.

Investigation of knowledge, attitude, and practice of Tehranian women apropos of reducing, reusing, recycling, and recovery of urban solid waste.

This paper aimed to explore knowledge, attitudes, and practices (KAP) of women towards the municipal solid waste (MSW) management in Tehran, Iran, to provide a basis for experts and decision-makers to develop or improve practical waste management strategies. Women's contribution could markedly promote accomplishment of MSW management strategies, which has been neglected in many developing countries. A cross-sectional study was conducted in two stages: first, a random sample of 384 respondent women was selected from the 22 urban districts of Tehran, then 64 of them were randomly selected and trained face-to-face.

Determination of leaching behaviour of polycyclic aromatic hydrocarbons from contaminated soil by column leaching test.

Column leaching tests become increasingly important for assessing the risk of release of pollutants from a wide variety of solid materials into water. In this study a column leaching test was designed to provide insight into the fate of selected polycyclic aromatic hydrocarbons (PAHs) in soils and their leaching behaviour. The results showed relatively high initial concentrations of naphthalene, anthracene, and pyrene for column B2.

The influence of deposit control additives on nitrogen oxides emissions from spark ignition engines (case study: Tehran).

In the present research, the influence of a deposit control additive on NOx emissions from two types of gasoline engine vehicles i.e., Peykan (base on Hillman) and Pride (South Korea Kia motors) was studied.