Green Polymers and Environmental Pollution Control

Simultaneous removal of Cd, Co, Cu, Mn, Ni, and Zn from synthetic solutions on a hemp‐based felt. II. Chemical modification

“…[1][2][3][4] Many of them such as coir, jute, date pits, corncob, rice straw, fruit peel waste, bark, or sawdust have been tested and proposed for the removal of metals, phenols, dyes, fluorides, phosphates, or pesticides present in wastewaters. [5][6][7][8][9][10][11][12][13][14] The hemp plant (Cannabis sativa L.) also deserves particular attention. [15][16][17][18][19][20][21][22][23][24][25] As a biodegradable plant which needs no irrigation or phytosanitary treatments, hemp is excellent as a crop rotation leader to alternate with crops such as beets or grains.…”

Simultaneous removal of Cd, Co, Cu, Mn, Ni and Zn from synthetic solutions on a hemp‐based felt: Experimental design

“…Metal contamination of water and groundwater, of both anthropogenic and natural origins, is a major problem worldwide. An important source of contamination is effluents with high metal content discharged into water bodies by industry . Anthropogenic metal contamination of groundwater is associated, in particular, with the metallurgical industry and with ore processing industries.…”

“…This polymetallic mixture was chosen for several reasons. From the environmental point of view, the metals that are of greatest concern are those which, either by their presence or their accumulation, can have a toxic or inhibitory effect on living organisms. In France, the main metals to affect the environment include cadmium, copper, and nickel .…”

“…Manganese and cobalt were studied in this work also due to their common presence in discharge waters from the metal industry . These six metals are considered as trace elements because of their presence at trace concentrations (from ppb to a few ppm) in various environmental matrices, but are also potentially toxic due to their tendency to bio‐accumulate and persist in the environment . Here studies concerning the effects of operating variables (i.e., the effect of initial metal concentration, dose of adsorbent, contact time, agitation speed, temperature, presence of NaCl, and pH) on the adsorption capacity were evaluated using the batch method.…”

“…An important source of contamination is effluents with high metal content discharged into water bodies by industry. [1][2][3] Anthropogenic metal contamination of groundwater is associated, in particular, with the metallurgical industry and with ore processing industries. In Europe, since 1976, increasingly strict requirements have been successively introduced to limit and prevent industrial pollution.…”