Tiwari Sonam

Indian Institute of Technology (Banaras Hindu University) Varanasi | BHU · Department of Civil Engineering

Several adsorbents were prepared employing co-precipitation, urea, ascorbic acid, and natural plant extracts and evaluated for the removal of arsenic from groundwater. Several parameters affecting adsorption, namely, initial arsenic concentration, pH, adsorbent dose, and contact time were studied in batch experiments. pH was found to be one of the...

In this study, Bacillus licheniformis immobilized with low-density polyethylene (LDPE) was employed to degrade Brilliant Green (BG) dye from wastewater in a packed bed bioreactor (PBBR). Bacterial growth and extracellular polymeric substance (EPS) secretion were also assessed under different concentrations of BG dye. The impacts of external mass tr...

Imidacloprid is one of the frequently used insecticides. Indiscriminate use of imidacloprid makes it perilous to non-target organisms as well as the environment, including soil and water sources, thus, making its elimination from the environment an irresistible concern. Bioremediation is a technique that uses the degrading capabilities of bacteria...

This study aims to investigate the biodegradation of brilliant green (BG) dye in a packed bed bioreactor (PBBR) using Bacillus lichenifomis immobilized polyurethane (PU) foam as support material. The operating process parameters (e.g., pH, dye concentration, and inoculum dose) were optimized using response surface methodology (RSM) and artificial n...

Arsenic poses a significant threat to both human health and the environment. Arsenic removal through solar oxidation has been investigated in a batch process. Arsenic was artificially added to both deionized and tap water to conduct the experiments. Clean, colorless, transparent, Polyethylene Terephthalate (PET) bottles were used for Solar Oxidatio...

Fresh water is a valuable resource, but the increase in pollution of aquatic ecosystem is a matter of concern. Industries are rapidly budding in India, which discharge their effluents into the water bodies either directly or after treating partially. Pharmaceutical compounds are very important, but at the same time, release toxic contaminants in th...

Bio-medical waste is the waste generated from hospitals, including infectious waste, and has a high potential for causing injury and infections to humans as well as to the environment. Effective bio-medical waste management is the requisite parameter for a healthy and unpolluted environment. It is a social and legal responsibility of the medical co...

The presence of emerging contaminants in the effluents of wastewater treatment plants is a matter of growing concern. Emerging contaminants are chemical compounds including pesticides, pharmaceuticals, hormones, other endocrine disruptors, surfactants, surfactant metabolites, industrial additives and personal care products. The occurrence of variou...

Arsenic, even in trace concentration presents several adverse impacts on human health and are classified among carcinogenic species. The subsequent health concerns owing to consumption of arsenic contaminated water has been widely reported, however, the presence and effects of arsenic through air still remains to be explored thoroughly, due to the...

Capacitive Deionization has the potential to be a promising desalination method that can compete with the conventional techniques like reverse osmosis, multistage distillation etc. This research is focused on the fabrication of carbon electrodes for Capacitive Deionization. Initially experiments were performed with the varying proportions of PVDF (...

Arsenic contamination in drinking water is a major global issue. Arsenicosis may be caused due to chronic consumption of arsenic-contaminated water. Economical and convenient removal of arsenic from water has remained a terrific challenge. The most commonly employed technologies for arsenic removal from water are coagulation and flocculation, filtr...

A novel, inexpensive, easily available and eco-friendly biosorbent, Psidium guajava leaves (L), has been evaluated for its capability to remove fluoride from water. Batch experiments were carried out to study the effect of various parameters affecting the biosorption such as pH (2-10), biosorbent dose (1-7 mg/50 mL), contact time (30-210 min) and i...