1998
DOI: 10.1016/s0032-9592(97)00055-1
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Removal of heavy metals from aqueous solution by apple residues

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Cited by 137 publications
(22 citation statements)
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“…At pH higher than 3-4, carboxylic groups are deprotonated and negatively charged. Accordingly, the attraction of positively charged metal ions would be improved [38]. Thereafter, at pH 5-6, the metal removal remains almost constant.…”
Section: Effect Of Solution Phmentioning
confidence: 96%
See 1 more Smart Citation
“…At pH higher than 3-4, carboxylic groups are deprotonated and negatively charged. Accordingly, the attraction of positively charged metal ions would be improved [38]. Thereafter, at pH 5-6, the metal removal remains almost constant.…”
Section: Effect Of Solution Phmentioning
confidence: 96%
“…The removal of metal ions from aqueous solution by adsorption is highly dependent on the pH of the solution, which affects the surface charge of the adsorbent and the degree of ionization and speciation of the adsorbate [37,38]. To verify the effect of pH on Zn 2+ , Ni 2+ , and Cd 2+ removal using OSAC as adsorbent, experiments were conducted by modifying the pH value from 2 to 6 as shown in Fig.…”
Section: Effect Of Solution Phmentioning
confidence: 99%
“…The abundant natural occurrence and presence of large amount of surface functional groups make various agricultural wastes good alternatives to expensive synthetic adsorbents [10]. Different agrowastes like apple and orange wastes as well as rice milling products have been investigated for this purpose [11][12][13].…”
Section: Introductionmentioning
confidence: 99%
“…Therefore, numerous approaches have been studied for the development of cheaper and effective metal adsorbent such as microbial biomass and agricultural by-products [1,2]. Some of these by-products are carrot residue [3], apple residue [4], olive mill residue [5], and wheat shell [6]. An important step to the development of biosorption processes is the selection of optimal physicochemical conditions such as medium pH, temperature and biomass concentration.…”
Section: Introductionmentioning
confidence: 99%