Utilization of maize husk (Zea mays L.) as low-cost adsorbent in removal of iron from aqueous solution

Abstract

Adsorption of iron from aqueous solution by using maize husk (Zea mays L.) as a low-cost adsorbent was studied. Batch experiments were carried out at ambient temperature, 0.075-0.250 mm of particle size and 100 rpm of agitation speed to determine the influence of initial pH, adsorbent dose, initial concentration and contact time on the removal of iron. Langmuir and Freundlich models were applied to describe the adsorption isotherm of iron by maize husk. The results showed that optimum condition of iron removal were 4 of pH solution, 20 g/L of adsorbent dose, 10 mg/L of Fe concentration and 15 min of contact time of adsorption with 0.499 mg Fe/g maize husk of adsorption capacity. Experimental data fitted well to Langmuir's adsorption equilibrium isotherm within the concentration range studied. This study demonstrated that maize husk, which is an agricultural waste, has potential for iron removal from groundwater or other polluted waters.

PENGARUH VARIASI KONSENTRASI LOGAM MANGAN (Mn) TERHADAP EFISIENSI PENYISIHAN LOGAM BESI (Fe) PADA ADSORPSI MENGGUNAKAN SERBUK KULIT JAGUNG SEBAGAI ADSORBEN

“…Industri kecil ini berlokasi di Belakang Olo Padang. Perlakuan awal terhadap kulit jagung adalah kulit jagung dibersihkan, dicuci dengan air, dipotongpotong, dan dijemur di udara terbuka (Indah et al, 2016)). Sebelum digunakan sebagai adsorben, kulit jagung digrinder dan diayak hingga diameter (0,075-0,250) mm).…”

Simultaneous pollutant removal and PHB accumulation in simple anaerobic treatment of oily wastewater

“…These emulsified oil droplets are sheltered from spontaneous coalescence into larger flocs, thus making oil separation by simple gravity a timeconsuming and challenging process. Due to the enormous scale of this industry, the palm oil-related effluents have been increasing at an alarming rate, and the effects are detrimental to both the environment and the human being [1]. To treat oil and grease rich wastewaters biologically the most important criteria to be met are stable and active biomass and proper sludge concentration.…”

Adsorption Characteristic of Iron Onto Poly[eugenol-Co-(Divinyl Benzene)] From Aqueous Solution

“…Heavy metals can be toxic and non-biodegradable pollutants, which bring some impacts on environment, public health and economic [2]. Water with high iron content considered as heavy metal can be very objectionable either in taste, odor or in appearance [4,5]. Fe metal is the one of essential heavy metals to some extent is needed by organism, but in excess amount it has some toxic properties.…”

“…Adsorption is one of the most effective and simple methods for treatment of hazardous toxic waste from solution and an economically viable alternative if a low-cost adsorbent is utilized [7,8,9]. The study on Fe metal ion adsorption has also been performed using various natural materials, such as natural zeolite and modified zeolite [10], chitin, natural clay and activated clay [6], unmodified raphia palm [11], chitosan/ attapulgite composite [12], and maize husk [5]. In addition, there are still many other natural materials.…”