An emerging adsorption technology and its applicability on trees as an adsorbent for the remediation of water pollution: A review

Abstract

Wastewater pollution and its treatment is an ever-increasing concern in the century because of the higher industrialization and urbanization. The expansion of industries is the leading cause of polluting water resources. A discharge from industries contains various organic and inorganic pollutants. The heavy metals which are mostly discharged from the industries include Zinc (Zn), Arsenic (As), Nickel (Ni), Cadmium (Cd), Mercury (Hg), Copper (Co), Chromium (Cr), and Lead (Pb). These metals are toxic to human health and other living organisms. Water is an essential natural resource that reserves important flora and fauna on the earth. Therefore, it is necessary to remediate contaminated water from organic and inorganic pollutants. Chemical precipitation, ion exchange, reverse osmosis, chemical oxidation, reduction ultrafiltration, electrolysis, and adsorption are some treatment processes used to remove heavy metals from wastewater effluent. Adsorption is the most promising technique used for the removal of water pollutants. This review surveys the various natural adsorbents used to remove water pollutants. Natural adsorbents are the most effective and low-cost adsorption techniques in which plant residuals (leaves, stems, roots, straw, etc.) are used to remove water pollutants from wastewater.

Assessment of the Air pollution tolerance capacity of trees for development of greenery around the industrial area

“…Due to their large leaf surface area, plants reduce the amount of air pollutants in the environment by impinging, absorbing, and accumulating (Darro et al, 2022;Escobedo et al, 2008) them. An effective method for assessing the effects of air pollution is through the bio monitoring of plants (Bakiyaraj and Ayyappan, 2014;Kamesh et al, 2023). Although leaves are the most vulnerable portion of plants to air pollution, they undergo physiological changes before showing obvious harm to their leaves.…”

Evaluation of Physio-chemical Properties and WQI of the Drinking Water in Urban Area of Bilaspur, Chhattisgarh, India

“…The water pH is altered through electrolysis, or the splitting of the water molecule into hydrogen and hydroxide ions with an electric current. The pH of water indicates its acidity and basicity, and the scale of pH is <7.0 for acidic, 7.0 for neutral, and >7.0 for salinity or alkanity [59,60]. It detects the ratio of free hydroxyl and hydrogen ions present in water.…”

“…Quality of water influenced human health [3,62,63,64,65]. Inappropriate uses and unsustainable waste management techniques are causing the water quality to worsen in cities [4,5,6,59]. The trouble is getting dangerous because water treatment is either nonexistent or insufficient.…”