The threat of oil pollution increases with the expansion of oil exploration and production activities, as well as the industrial growth around the world. The study on the treatment of oily wastewater is a critical issue to the environmental protection as oil caused problems to the wastewater treatment facilities. Although oil particles can efficiently be removed by advanced technologies, the treatments are usually expensive and difficult to maintain. Adsorption and coalescence filtration are promising choice of treatment for its simplicity, effectiveness, and feasibility when appropriate sorbent is used. This review discusses the recent papers on the use of natural fibrous sorbent for removal of oil from wastewater, and its current development. With their excellent oil removal properties, environmental friendliness, easy availability, and feasibility, natural fibrous sorbents are an attractive alternative for oily wastewater treatment.
Catalyst free carbon nanospheres were synthesized using simple one step pyrolysis techniques where biowaste sago bark is used as a carbon precursor. Obtained carbon nanospheres showed porous nature and revealed that more than 95% carbon is present in the synthesized carbon nanospheres with particle size ranging from 40-70 nm. Electrochemical study showed specific capacitance value of 180 Fg -1 at 2 mVs -1 and the cycling stability up to 1700 cycles. Obtained carbon nanospheres are useful in super capacitor applications. Presented study revealed waste to wealth approach thereby reducing waste in the environment.
Porous Carbon Nanoparticles (PCNs) with well-developed microporosity were obtained from bio-waste oil palm leaves (OPL) using single step pyrolysis in nitrogen atmosphere at 500-600 8C in tubefurnace without any catalysis support. The key approach was using silica (SiO 2 ) bodies of OPL as a template in the synthesis of microporous carbon nanoparticles with very small particle sizes of 35-85 nm and pore sizes between 1.9-2 nm.In modern-day scientific applications, porous nanocarbons are ubiquitous and indispensable.
An up-to-date short review of the chalcone methodologies is presented, which is the most
interesting and beneficial for choosing the desired protocol to synthesize suitable derivatives of chalcones.
Chalcones are fluorescent, stable compounds which contribute to the synthesis of various
pharmacologically important heterocyclic structure-based derivatives. Chalcone has displayed a remarkable
curative efficiency to cure several diseases. Several schemes and methodologies have been
reported for employing different catalysts and reagents. The development of improved methodologies
of α, β-unsaturated carbonyl compounds is still on going. In this review, synthetic methodologies
and their recent modification in designing new methods with efficient, economical, eco-friendly
and high yield are discussed.
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