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Table 1 Quantities of metals in POME before treatment Metals Levels (mg/L) (Shavandi et al., 2012) Permissible limit (mg/L) Our study (mg/L) Fe 179.1 5 180 Mn 14.4 2 13 Zn 2.79 0.2 2 Experimental setup and Metal Analyses An acrylic column measuring 2 cm in diameter and 15 cm in length was developed as a fiber packed-bed column.
[4] AL.
El Nemr, A.
El-Sikaily,Treatment of wastewater containing toxic chromium using new activated carbon developed from date palm seed.

[3] Sonbatry El, Khashaba U.A, Machaly T, Factors affecting the machinability of GFRP/epoxy composites, Comp Structures, 63, pp. 329-338,2004
Abrao et.al,.
[9] Sureshkumar Manickam Shanmugasundram et.al, 2012 Experimental Investigation of Prediction of Hole quality Characteristics of Aluminum Matrix Composite (AMC225xe).
[11] El-Tayeb, N.S.M., B.F.

The matrix alloy is AZ91 (Mg-9mass%Al-0.7%Zn) magnesium alloy and the reinforcement is multi-walled carbon nanotubes (MWCNTs) with a diameter of 5~20nm and a length of ~10um.
For the Al18B4O33 whisker reinforced AZ91 composite, the TEM micrograph in the Fig. 2b shows the discontinuously located chemical reaction products MgO(magnesia) with FCC structure exit on the interface of the between Al18B4O33 whisker and matrix alloy.[10] Table.2 Tensile properties of matrix alloy and composites hardness Room temperature High temperature (at 150℃) UTS MPa 0.2%P.S, MPa El (%) UTS MPa 0.2%P.S, MPa El (%) AZ91 Alloy 75 188 80 2.3 163 60 3.0 Al18B4O33 MMC 150 253 200 1.2 225 188 1.4 MWCNT MMC 185 298 276 0.8 252 241 0.9 The MgO in the oxide fiber reinforced magnesium matrix composite, that was usually observed at the interface by the interfacial reaction between fiber and magnesium matrix.
Liu, at al., J.

Al-Saadoun, A.S.
Al-Gahtani.
El Maaddawy, K.
El Maaddawy, K.

Fatma and al. [14], the improvement in bending strength is attributed to better adhesion between the fiber and the matrix.
Sebti and al. [10], increasing the percentage of fibers in concrete can disrupt aggregate dispersion, leading to a decrease in mechanical properties such as compressive strength and bending strength.
Sebti and al. [10] and N.
Fatma and al. [14], an increase in the fiber ratio reduces the thermal conductivity of the sample, therefore offers a new material with superior thermal behavior.
Nawel, Valorization of Tunisian clays in the manufacture of lightweight aggregates: Experimental study of lightweight concretes, PhD thesis - Civil Engineering, Tunisian National School of Engineers, Tunis El-Manar University (2017) [2] P.C.

Similar results have been reported by Zhang et al., [14].
El-Zahhar, N.
El-Shafey, S.
Al-Busafi, and H.
Al-Degs, M.

The strain rate sensitivity of various relative densities, open-cell aluminium alloy foams fabricated by a powder metallurgical method is investigated by Yi et al. [9] under compression loading at different strain rates (10-3 to 2600s-1).
Dynamic compression of aluminium alloy 2519A at different strain rates (600−7000s−1) and temperatures (20 − 4500C) was investigated by Zhang et al. [10] and the strain rate sensitivity exponent was determined for different temperatures.
The stress–strain behaviour of the aluminium alloy AA7075 is characterized by Borvik et al. [12] in dynamic tension and compression and by El-Magd and Abouridouane [13] in tension, compression and shear.
The constituents of the material in wt.% are Al: 98.67, Mg: 0.567, Mn: 0.022, Si: 0.415, Fe: 0.148, Cu: 0.055, Ni: 0.040, Zn: 0.030, Ti: 0.003, Cr: 0.005, Pb: 0.010 and Sn: 0.025.
El-Magd and M.

Verzakov, et al.
El-Masry, N.
El-Sayed, et al.
Schlerf, et al.
Schlerf, et al.

[5] B Ghosh, S Chowdhury, P Banerjee, et al.
Arai, et al.
El-Nahass, H.M.
El-Ghamaz.
[13] Gao C., Shen H., Sun L, et al.

Dong, et al.: J.
Sharker, et al.: J.
Ibuki, et al.: Jpn.
Ibuki, et al.: Jpn.
Must, et al.: J.